Commercial

Airplane

Group

737

Service Bulletin

Number: 737-78-1063 Revision Transmittal Sheet Date: September 24, 1998

Revision 2: October 7, 1999

ATA System: 7831

SUBJECT: EXHAUST - Thrust Reverser - Inner Wall Blanket Insulation Change

y

This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION

More work is required to replace the CSR924C5EA3 rivets with the CSR904B5E5 rivets and

NAS1149CN0316R washers with NAS1149CN316R washers if the intent of the initial release was

successfully accomplished.

REASON FOR REVISION

This revision is sent to:

1. Change the rivet part number which was listed as CSR924C5EA3 to CSR904B5E5 in Paragraph 2.C.1.,

Parts Necessary For Each Airplane and Figure 4, Step 1.

2. Change the washer part number which was listed as NAS1149CN0316R to NAS1149CN316R in

Paragraph 2.C.1., Parts Necessary For Each Airplane and Figure 3, Steps 11, 14, and 19.

3. Provide references for the ASP fasteners installation and the location information for bracket assemblies

installation.

4. Remove the MA 25 (Crown-Metro) sealant at all locations throughout the service bulletin.

The data given in Information Notice 737-78-1063 IN 02 is included in this revision.

Paragraph 1.A., Effectivity, shows changes of airplane operators. Each operator should examine the

Effectivity paragraph for changes.

Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location

of important changes.

Pages with no vertical lines have no important changes.

REVISION HISTORY

Original Release: September 24, 1998

Revision 1: February 18, 1999

Revision 2: October 7, 1999

737-78-1063

Revision Transmittal Page 1 of 1

Commercial

Airplane

Group

737

Service Bulletin

Number: 737-78-1063 Summary Date: September 24, 1998

Revision 2: October 7, 1999

ATA System: 7831

SUBJECT: EXHAUST - Thrust Reverser - Inner Wall Blanket Insulation Change

CONCURRENT REQUIREMENTS

None

BACKGROUND

This service bulletin gives instructions for installing

an improved insulation blankets on the thrust

reverser inner wall. This change will prevent

possible structural damage due to engine core air

getting around the insulation blanket edges of the

thrust reverser inner wall.

At Boeing, it was found that when engine ground

testing, the thrust reverser inner wall temperatures

were exceeding design limits. The problem was

caused by engine core air getting around the

insulation blanket edges and impinging on the inner

wall of the thrust reverser. This condition may

cause overheating in an area that can not be easily

accessed.

ACTION PRR 38203R

On both engines, replace the old insulation blankets

with the new improved insulation blankets. Apply

adhesive (Silicone) RTV 106 space between the

insulation blanket and compression pad spacer.

EFFECTIVITY (737-600/-700/-800 Airplanes)

See service bulletin effectivity.

COMPLIANCE

No compliance time is given.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are available for

airplanes in warranty as of July 18, 1997. Please

refer to Paragraph 2.B., Industry Support

Information.

MANPOWER

Per Engine

Total

Man-Hours

Elapsed Time

(Hours)

30.25 15.25

MATERIAL INFORMATION

Boeing Supplied Kits

Refer to Paragraph 2.A., Material - Price and

Availability.

737-78-1063

Summary Page 1 of 2
BOEING SERVICE BULLETIN 737-78-1063

LOWER INSULATION BLANKETS

REPLACE THE UPPER AND

RTV 106

APPLY

LEFT SIDE SHOWN, RIGHT SIDE SIMILAR

FWD

S52806

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 Summary Page 2 of 2
Commercial

Airplane

Group

737

Service Bulletin

Number: 737-78-1063

Date: September 24, 1998

Revision 2: October 7, 1999

ATA System: 7831

SUBJECT: EXHAUST - Thrust Reverser - Inner Wall Blanket Insulation Change

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D6-19567, Part 3 for Airplane Variable Number, Line

Number, and Serial Number data.

This service bulletin is for the airplanes shown below. An equivalent change is on subsequent

production airplanes. Refer to PRR 38203R for data about this change.

Airplane Models:

737-600 737-700 737-800

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE AND VARIABLE NUMBER

AIR BERLIN (BER)

YC051

BRAATHENS (BRT)

YA311

BWIA INTERNATIONAL AIRWAYS (TTA)

YA301

CONTINENTAL AIRLINES (CAL)

YA501-YA503

GERMANIA (GER)

YA231-YA240

HAPAG-LLOYD FLUG (HAP)

YC001-YC004

LAPA ARGENTINA (LAZ)

YA302

MAERSK AIR (MRS)

YA201-YA203

SAS (SAS)

YE002

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 Page 1 of 38
BOEING SERVICE BULLETIN 737-78-1063

SHANGHAI AIRLINES (SHA)

YA312

SOUTHWEST AIRLINES (SWA)

YA002-YA011 YA024

TRANSAERO AIRLINES (TRX)

YA251-YA252

IDENTIFICATION BY VARIABLE NUMBER

YA002-YA011 YA024 YA201-YA203 YA231-YA240 YA251-YA252 YA301-YA302

YA311-YA312 YA501-YA503 YC001-YC004 YC051 YE002

2. Spares

None

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 2
BOEING SERVICE BULLETIN 737-78-1063

B. Concurrent Requirements

None

C. Reason

This service bulletin gives instructions for installing an improved insulation blankets on the thrust

reverser inner wall. This change will prevent possible structural damage due to engine core air

getting around the insulation blanket edges of the thrust reverser inner wall.

At Boeing, it was found that when engine ground testing, the thrust reverser inner wall temperatures

were exceeding design limits. The problem was caused by engine core air getting around the

insulation blanket edges and impinging on the inner wall of the thrust reverser. This condition may

cause overheating in an area that can not be easily accessed.

Revision 1 is sent to change the INDUSTRY SUPPORT INFORMATION on the Summary page and

Paragraph 2.B., Industry Support Information.

INDUSTRY SUPPORT INFORMATION on the Summary page should read as follows:

Boeing warranty remedies are available for airplanes in warranty as of July 18, 1997. Please refer to

Paragraph 2.B., Industry Support Information.

Industry Support Information on Paragraph 2.B., should read as follows:

Boeing warranty remedies are available for 737 airplanes in warranty as of July 18, 1997. For

man-hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing

Product Assurance Contracts. The kits for airplanes in warranty as of that date will be supplied at no

charge. Send a purchase order for the kits to Boeing Spares. Please refer to this service bulletin

number and reference the airplane variable number in your purchase order.

Also, in Paragraph 2.A., Material - Price and Availability is changed from "Charge" to "No Charge".

Revision 2 is sent to:

1. Change the rivet part number which was listed as CSR924C5EA3 to CSR904B5E5 in Paragraph

2.C.1., Parts Necessary For Each Airplane and Figure 4, Step 1.

2. Change the washer part number which was listed as NAS1149CN0316R to NAS1149CN316R in

Paragraph 2.C.1., Parts Necessary For Each Airplane and Figure 3, Steps 11, 14, and 19.

3. Provide references for the ASP fasteners installation and the location information for bracket

assemblies installation.

4. Remove the MA 25 (Crown-Metro) sealant at all locations throughout the service bulletin.

The data given in Information Notice 737-78-1063 IN 02 is included in this revision.

D. Description

On both engines, replace the old insulation blankets with the new improved insulation blankets.

Apply adhesive (Silicone) RTV 106 space between the insulation blanket and compression pad

spacer.

Revision 1 - No more work is necessary on airplanes changed as shown in the initial release of this

service bulletin.

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 3
BOEING SERVICE BULLETIN 737-78-1063

Revision 2 - More work is required to replace the CSR924C5EA3 rivets with the CSR904B5E5 rivets

and NAS1149CN0316R washers with NAS1149CN316R washers if the intent of the initial release

was successfully accomplished.

An evaluation form is attached to this service bulletin. Please use this form to tell us what you think

of the quality of this service bulletin.

E. Compliance

No compliance time is given.

F. Approval

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes

specified in this service bulletin comply with the applicable Federal Aviation Regulations (FAR) and

are FAA approved. This service bulletin and the FAA approval were based on the airplane in its

original Boeing delivery configuration or as modified by other FAA approved Boeing changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also

affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory

agency approval before incorporating this service bulletin.

G. Manpower

The table below shows an estimate of the man-hours necessary to do this change for each engine.

This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator

man-hour data if necessary. The estimate does not include lost time. These are some examples of

lost time:

- Time to adjust to the workplace

- Time to schedule the work

- Time to examine the work

- Time to cure the materials

- Time to find the tools.

Task Number of Persons Man-Hours Elapsed Time (Hours)

Prepare 1 .25 .25

Open Access 2 5.0 2.5

Change 2 18.0 9.0

Close Access 2 5.0 2.5

Test 2 2.0 1.0

TOTAL FOR EACH ENGINE 30.25 15.25

H. Weight and Balance Changes

Change in Weight

(Pounds)

Change in Moment

(Pound-Inches)

+10.0 +5,821.0

I. Electrical Load Data

Not applicable

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 4
BOEING SERVICE BULLETIN 737-78-1063

J. References

1. Existing Data:

a. Engineering Change Memo PRR 38203R

b. 737-600/-700/-800 Maintenance Manual (AMM) Subjects 78-31-01, 78-31-13

c. Boeing Standard Wiring Practices Manual (BSWPM) (20-00-13, 20-10-11, 20-10-12)

d. Boeing Standard Overhaul Practices Manual (BSOPM) 20-50-12

2. Drawings supplied in support of this revision:

Drawing Number Sheet DCN ADCN Title

315T3558 1 G -- Fastener Installation Adjustable

Clamping Force Positive Lock

1.1 C --

1.2 D --

1.3 E --

1.4 F --

1.5 G --

2 G --

3 E --

4 F --

5 -- --

6 F --

7 D --

8 -- --

9 E --

10 F --

11 G --

302A2100 1 A -- Top Kit - Blanket Replacement

3. Installation Drawings:

None

K. Publications Changed

Publication Chapter-Section

737-600/-700/-800 Maintenance Manual............ 78-31

Overhaul Manual............................... 78-31

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 5
BOEING SERVICE BULLETIN 737-78-1063

L. Interchangeability and Intermixability of Parts

Refer to Paragraph 2.E., Existing Parts Accountability, for interchangeability and intermixability

information.

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 6
BOEING SERVICE BULLETIN 737-78-1063

2. MATERIAL INFORMATION

A. Material - Price and Availability

Boeing can supply the kits shown in Paragraph 2.C., Parts Necessary For Each Airplane, as shown

below. Kit availability is shown in the Reorder Lead Time (ROLT). ROLT is calculated from the date

Boeing gets the purchase order.

Kit Number Name

ROLT

(weeks) Unit Price

302A2100-1 Kit 45 No Charge

302A2100-2 Kit 45 No Charge

B. Industry Support Information

Boeing warranty remedies are available for 737 airplanes in warranty as of July 18, 1997. For

man-hour reimbursement for airplanes in warranty as of that date, send a warranty claim to Boeing

Product Assurance Contracts. The kits for airplanes in warranty as of that date will be supplied at no

charge. Send a purchase order for the kits to Boeing Spares. Please refer to this service bulletin

number and reference the airplane variable number in your purchase order.

C. Parts Necessary For Each Airplane

1. Kits:

To get the kits shown below, refer to Paragraph 2.A., Material - Price and Availability.

NOTE: One top kit is necessary for each engine.

302A2100 TOP KIT - BLANKET REPLACEMENT

-2 -1

QTY Part Number Name

. - 302A2100-1 Top Kit (Blanket, Left Side)

- . 302A2100-2 Top Kit (Blanket, Right Side)

. 1 S315A213-43 Blanket

1 . S315A213-44 Blanket

. 1 S315A213-45 Blanket

1 . S315A213-46 Blanket

1 1 315A2107-4 Spacer

3 3 315A2107-5 Spacer

1 1 315A2107-6 Spacer

. 1 315A2134-109 Bracket Assembly

1 . 315A2134-110 Bracket Assembly

. 1 315A2134-113 Bracket Assembly

. . 315A2134-114 Bracket Assembly

. 1 315A2134-117 Bracket Assembly

1 . 315A2134-118 Bracket Assembly

. 1 315A2134-121 Bracket Assembly

1 . 315A2134-122 Bracket Assembly

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 7
BOEING SERVICE BULLETIN 737-78-1063

(Continued)

302A2100 TOP KIT - BLANKET REPLACEMENT

-2 -1

QTY Part Number Name

. 1 315A2134-125 Bracket Assembly

1 . 315A2134-126 Bracket Assembly

. 1 315A2134-129 Bracket Assembly

1 . 315A2134-130 Bracket Assembly

2 2 315A2134-133 Bracket Assembly

12 12 315A2134-134 Bracket Assembly

. 1 315A2172-39 Bracket Assembly

. . 315A2172-40 Bracket Assembly

. 1 315A2172-43 Bracket

1 . 315A2172-44 Bracket

. 1 315A2172-45 Bracket Assembly

1 . 315A2172-46 Bracket Assembly

1 315A2172-49 Bracket Assembly

1 . 315A2172-50 Bracket Assembly

. 1 315A2172-55 Bracket

1 . 315A2172-56 Bracket

. 1 315A2173-41 Retainer

. 1 315A2173-46 Retainer

40 40 315W1163-26 (a) Washer

30 30 315W1163-54 (a) Washer

1 1 ASPFPV06-12AC (b) Pin

1 1 ASPFPV06-15AC (b) Pin

22 22 ASPFSV06 (a) (b) Sleeve

24 24 ASPLC2AC06 (a) (b) Lock Collar

1 1 ASPPFV06-17AC (b) Pin

1 1 ASPPFV06-20AC (b) Pin

20 20 ASPPFV06-21AC (a) (b) Pin

1 1 BACB30LK2U3 Bolt

1 1 BACB30NW6K13 Bolt

2 2 BACB30NW6K14 Bolt

3 3 BACB30NW6K15 Bolt

2 2 BACB30NW6K16 Bolt

3 3 BACB30NW6K17 Bolt

3 3 BACB30NW6K18 Bolt

2 2 BACB30NW6K19 Bolt

4 4 BACB30NW6K2 Bolt

3 3 BACB30NW6K20 Bolt

3 3 BACB30NW6K21 Bolt

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 8
BOEING SERVICE BULLETIN 737-78-1063

(Continued)

302A2100 TOP KIT - BLANKET REPLACEMENT

-2 -1

QTY Part Number Name

3 3 BACB30NW6K22 Bolt

1 1 BACB30NW6K23 Bolt

1 1 BACB30NW6K24 Bolt

2 2 BACB30NW6K5 Bolt

1 1 BACB30NW6K6 Bolt

. 1 BACB30NY6K21 Bolt

4 4 BACB30NY6K4 Bolt

1 1 BACB30NY6K6 Bolt

1 1 BACB30NY6K8 Bolt

2 2 BACN10YT08CS (a) Nut

12 12 BACN10YT3CS (a) Nut

28 28 BACN10ZZ3D (a) Nut

7 7 BACR15CE4M3 (a) Rivet

3 3 BACR15CE5M3 (a) Rivet

5 5 BACR15FP5MP2R (a) Rivet

8 8 BACR15FR5MP2R (a) Rivet

6 6 BACR15FR5M2R (a) Rivet

26 26 CSR904B5E5 (a) Rivet

6 6 KFN511DL3 (c) Collar

16 16 MS20615-5M (a) Rivet

. 7 NAS1149CN316R (a) Washer

. 4 NAS1149CN416R (a) Washer

30 30 0090-13365 (a) Nut, Self Locking

2 2 2ASPPSV06 (b) Sleeve

(a) Quantity shown in excess of installation requirement.

(b) Huck Manufacturing Corporation, Aerospace Fastener Division (V17446)

900 Watson Center Road

Carson, California 90745

(c) Kaynar Technology Kaynar Division (V15653)

800 South State College Boulevard

P. O. Box 3001

Fullerton, California 92634-3001

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 9
BOEING SERVICE BULLETIN 737-78-1063

2. Parts and Materials Supplied by the Operator:

QTY Part Number (Specification) Name

As

Required

BMS 5-63 (a) (c) Firewall Sealant

As

Required

RTV 106 (b) Sealant, Silicone

(a) D Aircraft Products Company (V58093)

1191 Hawk Circle

Anaheim, California 92708

(b) General Electric Company (V01139)

Silicone Products Business Department

Hudson River Road

Waterford, New York 12188

(c) See the Qualified Products List at the end of the Boeing Material

Specification (BMS) for supplier data.

D. Parts Necessary to Change Spares

None

E. Existing Parts Accountability

The parts shown below are changed as shown in this service bulletin. Quantity (QTY) is the number

of parts changed on each airplane.

Existing Part Number RUC Name QTY New Part Number PNC RC

S315A213-25 DIS Insulation Blanket

(Left Side, Upper)

1 S315A213-43 R A

S315A213-26 DIS Insulation Blanket

(Right Side, Upper)

1 S315A213-44 R A

S315A213-27 DIS Insulation Blanket

(Left Side, Lower)

1 S315A213-45 R A

S315A213-28 DIS Insulation Blanket

(Right Side, Lower)

1 S315A213-46 R A

RUC Recommended Use Code

DIS - Discard the part.

PNC Part Number Code

R - This is the part number after the change given in this service bulletin.

RC Replacement Code

A - Do not use the existing part to replace the new or changed part.

F. Special Tooling - Price and Availability

The operator can supply the tools shown in Paragraph 2.G., Special Tooling Necessary to do this

Service Bulletin. Tool price and supply data are not given.

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 10
BOEING SERVICE BULLETIN 737-78-1063

G. Special Tooling Necessary to do this Service Bulletin

To get the tools shown below, refer to Paragraph 2.F., Special Tooling - Price and Availability.

Maintenance and overhaul tools in the manuals shown in Paragraph 1.J., References, can also be

necessary. Examine operator tool supply to make sure all necessary tools are available.

Tool Kit Number Name

106524 (a) Sleeve Driver

352 (a) Installation Tool

99-895 (a) Nose Assembly

(a) Huck Manufacturing Corporation, Aerospace Fastener Division (V17446)

900 Watson Center Road

Carson, California 90745

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 11
BOEING SERVICE BULLETIN 737-78-1063

BLANK PAGE

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 12
BOEING SERVICE BULLETIN 737-78-1063

3. ACCOMPLISHMENT INSTRUCTIONS

GENERAL NOTES

1. The paragraphs identified with a letter give the general work instructions. The instructions

identified with numbers on the figures give the recommended sequence of steps.

2. Unless shown differently, these dimensions and tolerances are used:

- Linear dimensions are in inches

- Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03

inch

- Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch

- Angular tolerance is plus or minus 2 degrees

- Hole dimensions for standard solid rivets are given in 737 Structural Repair Manual, Chapter 51

- Torque limits to tighten nuts and bolts are given in 737 Structural Repair Manual, Chapter 51.

3. Alternative fasteners are given in 737 Structural Repair Manual, Chapter 51.

4. Obey all of the warnings and cautions given in the specified manual sections.

WORK INSTRUCTIONS

A. On both engines, remove the thrust reversers. Refer to 737-600/-700/-800 Maintenance Manual

(AMM) 78-31-01.

B. Remove the insulation blankets. Refer to Figure 1 or 737-600/-700/-800 Maintenance Manual

(AMM) Subject 78-31-13.

C. Remove the upper support brackets. Refer to Figure 2.

D. Install the upper support brackets. Refer to Figure 3.

E. Change the upper / lower support brackets. Refer to Figure 4.

F. Remove the lower support brackets. Refer to Figure 5.

G. Install the lower support brackets. Refer to Figure 6.

H. Install the insulation blankets. Refer to Figure 7 or 737-600/-700/-800 Maintenance Manual

(AMM) Subject 78-31-13.

I. Part mark that service bulletin 737-78-1063 has been done on the thrust reverser fan duct cowl.

Refer to Boeing Standard Overhaul Practices Manual 20-50-10.

J. Re-install the thrust reversers. Refer to 737-600/-700/-800 Maintenance Manual (AMM) 78-31-01.

K. Put the airplane back to a serviceable configuration.

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 13
BOEING SERVICE BULLETIN 737-78-1063

FIGURE TABLE OF CONTENTS

Title Page

FIGURE 1. LEFT AND RIGHT THRUST REVERSER INSULATION BLANKET

REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR) . . . . . . . . . . . 15

FIGURE 2. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION

BLANKET SUPPORT BRACKETS REMOVAL (LEFT SIDE

SHOWN, RIGHT SIDE SIMILAR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

FIGURE 3. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION

BLANKET SUPPORT BRACKETS INSTALLATION (LEFT SIDE

SHOWN, RIGHT SIDE SIMILAR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

FIGURE 4. LEFT AND RIGHT UPPER/LOWER THRUST REVERSER

INSULATION BLANKET SUPPORT BRACKETS MODIFICATION

(LEFT SIDE SHOWN, RIGHT SIDE SIMILAR). . . . . . . . . . . . . . . . . . . . . 24

FIGURE 5. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION

BLANKET SUPPORT BRACKETS REMOVAL (LEFT SIDE

SHOWN, RIGHT SIDE SIMILAR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION

BLANKET SUPPORT BRACKETS INSTALLATION (LEFT SIDE

SHOWN, RIGHT SIDE SIMILAR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

FIGURE 7. LEFT AND RIGHT THRUST REVERSER INSULATION

BLANKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE

SIMILAR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

September 24, 1998 737-78-1063

Revision 2: October 7, 1999 14
BOEING SERVICE BULLETIN 737-78-1063

4

3

1

3

6

2

2

5

5

FWD

21 PLACES

S52792

FIGURE 1. LEFT AND RIGHT THRUST REVERSER INSULATION BLANKET REMOVAL (LEFT SIDE

SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 2 737-78-1063

Revision 2: October 7, 1999 15
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

NOTE: Remove sealant bond with a knife.

1 Remove /

Keep

Nut

Washer

0090-13365

315W1163-54

21

21

--

2 Remove /

Keep

Nut

Washer

BACS12GU3K10

315W1163-26

6

6

--

3 Remove /

Keep

Nut

Washer

BACS12GU3K12

315W1163-26

3

3

--

4 Remove /

Keep

Nut

Washer

BACN10YR3C

315W1163-26

1

1

--

5 Remove /

Keep

Nut

Washer

BACS12GU3K16

315W1163-26

8

8

--

6 Remove /

Discard

Upper Insulation

Blanket (Left Side)

S315A213-25 1 --

Lower Insulation

Blanket (Left Side)

S315A213-27 1

FIGURE 1. LEFT AND RIGHT THRUST REVERSER INSULATION BLANKET REMOVAL (LEFT SIDE

SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 2 737-78-1063

Revision 2: October 7, 1999 16
BOEING SERVICE BULLETIN 737-78-1063

A

A

S52958

FWD

FIGURE 2. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 3 737-78-1063

Revision 2: October 7, 1999 17
BOEING SERVICE BULLETIN 737-78-1063

8 7

6

5 4

3

A-A

2

1

FWD

FITTING - HINGE BEAM

PANEL

ASSEMBLY

AFT COWL

S54135

FIGURE 2. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 3 737-78-1063

Revision 2: October 7, 1999 18
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

1 Remove /

Discard

Bracket Assembly 315A2172-1 (Left Side)

and

315A2172-2 (Right Side)

1

1

--

2 Remove /

Keep

Fastener -- -- Remove only fasteners

attached on retainer - fire seal

support 315A2173-7 (left side)

and 315A2173-8 (right side).

3 Remove /

Discard

Bracket Assembly 315A2134-17 (Left Side)

and

315A2134-18 (Right Side)

1

1

--

4 Remove /

Discard

Bracket Assembly 315A2134-29 (Left Side)

and

315A2134-30 (Right Side)

1

1

--

5 Remove /

Discard

Bracket Assembly 315A2134-105 (Left Side)

and

315A2134-106 (Right Side)

1

1

--

6 Remove /

Discard

Fastener -- 3 Remove fasteners only. Do not

remove fire seal support

bracket 315A2172-3.

7 Remove /

Discard

Fastener -- 1 Remove fastener only. Do not

remove fire seal support

bracket 315A2172-3.

8 Remove /

Discard

Bracket Assembly 315A2134-33 (Left Side)

and

315A2134-34 (Right Side)

1

1

Remove bracket assembly then

install bolt BACB30NW6K5 and

nut BACN10YT3CS to fill open

hole. Install wet with BMS 5-63

as specified in Boeing Standard

Overhaul Practices Manual

20-50-12. Torque to 25-35

in-lb.

FIGURE 2. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 3 OF 3 737-78-1063

Revision 2: October 7, 1999 19
BOEING SERVICE BULLETIN 737-78-1063

21

A

A

S53051

FWD

FIGURE 3. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 4 737-78-1063

Revision 2: October 7, 1999 20
BOEING SERVICE BULLETIN 737-78-1063

18

B-B

A-A

20 9 19 12

17 14 16 15 13

7 11 10

6 8

5

1

4

3

2

INBD

FITTING - HINGE BEAM

ASSEMBLY

PANEL

AFT COWL

FWD

B

B

S54061

FIGURE 3. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 4 737-78-1063

Revision 2: October 7, 1999 21
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

1 Install Bracket Assembly 315A2172-45 (Left Side)

and

315A2172-46 (Right Side)

1

1

--

2 Install Bolt

Nut

BACB30NY*K*

BACN10YT*CS

1

1

Install wet with BMS 5-63 as

specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12. Torque 25 to

35 in-lb.

3 Install Bolt

Nut

BACB30NW*K*

BACN10YT*CS

1

1

Install wet with BMS 5-63 as

specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12. Torque 25 to

35 in-lb.

4 Install Bolt

Nut

BACB30NW*K*

BACN10YT*CS

3

3

Install wet with BMS 5-63 as

specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12.

5 Install Bolt

Nut

BACB30NW*K*

BACN10YT*CS

1

1

Install wet with BMS 5-63 as

specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12.

6 Install /

Kept

Fastener -- -- Fay surface seal with BMS 5-63.

Ensure a small fillet seal is

formed to contact squeeze out

from fay surface seal.

7 Install Rivet BACR15FR*M*R 4 Drill from pilot hole in retainer

315A2173-7 to .1760 - .1800

inch diameter.

8 Install Rivet BACR15CE*M* 1 Drive deformed side of rivet a

minimum of 1.5 times nominal

shank diameter.

9 Install Bracket Assembly 315A2134-121 (Left Side)

and

315A2134-122 (Right Side)

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Fay surface seal with BMS 5-63

as specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12. Refer to

Drawing 315T3558 for ASP

fasteners installation.

Pin

Sleeve

Lock Collar

ASPPFV06-21AC

ASPFSV06

ASPLC2AC06

2

2

2

10 Install Bracket Assembly 315A2134-113 (Left Side)

and

315A2134-114 (Right Side)

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Fay surface seal with BMS 5-63

as specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12. Refer to

Drawing 315T3558 for ASP

fasteners installation.

Pin

Sleeve

Lock Collar

ASPPFV06-21AC

ASPFSV06

ASPLC2AC06

2

2

2

FIGURE 3. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 3 OF 4 737-78-1063

Revision 2: October 7, 1999 22
BOEING SERVICE BULLETIN 737-78-1063

(Continued)

STEP TASK NAME PART NUMBER QTY NOTES

11 Install Washer NAS1149CN316R 1 --

12 Install Bracket Assembly 315A2134-109 (Left Side)

and

315A2134-110 (Right Side)

1

1

Fay surface seal with BMS 5-63

as specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12.

13 Install Bolt

Nut

BACB30NW6K24

BACN10YT3CS

1

1

--

14 Install Pin

Sleeve

Lock Collar

ASPPFV06-21AC

ASPFSV06

ASPLC2AC06

1

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Refer to Drawing 315T3558 for

ASP fasteners installation.

Washer NAS1149CN316R 1 Near side.

15 Fill Gap -- BMS 5-63 -- Fillet seal to promote drainage,

remove excess sealant.

16 Fay

Surface

Seal

-- BMS 5-63 -- Ensure a small fillet seal is

formed to contact squeeze out

from fay surface seal.

17 Install Bracket Assembly 315A2134-117 (Left Side)

and

315A2134-118 (Right Side)

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Fay surface seal with BMS 5-63

as specified in Boeing Standard

Overhaul Practices Manual

Chapter 20-50-12. Refer to

Drawing 315T3558 for ASP

fasteners installation.

Pin

Sleeve

Lock Collar

ASPPFV06-21AC

ASPFSV06

ASPLC2AC06

3

3

3

18 Install Bracket Assembly 315A2172-49 (Left Side)

and

315A2172-50 (Right Side)

1

1

--

Rivet BACR15FR5MP2R 7

19 Install Pin

Sleeve

Lock Collar

ASPPFV06-20AC

ASPFSV06

ASPLC2AC06

1

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Refer to Drawing 315T3558 for

ASP fasteners installation.

Washer NAS1149CN316R 1 Near Side.

20 Shim Gap -- -- -- If and as required, maximum

thickness .040 with

BACS40R*TX or BACS40*R*.

Fay surface seal both sides of

shim using BMS 5-63. Ensure

any gaps are filled with sealant

after assembly.

21 Install Spacer 315A2107-5 (Left and

Right Sides)

3 --

FIGURE 3. LEFT AND RIGHT UPPER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 4 OF 4 737-78-1063

Revision 2: October 7, 1999 23
BOEING SERVICE BULLETIN 737-78-1063

SEE A

S54193

FWD

FIGURE 4. LEFT AND RIGHT UPPER/LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS MODIFICATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 3 737-78-1063

Revision 2: October 7, 1999 24
BOEING SERVICE BULLETIN 737-78-1063

A

1

1

2

FWD

S54425

FIGURE 4. LEFT AND RIGHT UPPER/LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS MODIFICATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 3 737-78-1063

Revision 2: October 7, 1999 25
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

1 Install Bracket Assembly 315A2134-134 10 Install 2 rivets on each bracket.

Fay surface seal with BMS 5-63.

Ensure a small fillet seal is

formed to contact squeeze out

from fay surface seal. Refer to

Drawing 302A2100, Sheet 1 for

the bracket assembly locations.

Rivet CSR904B5E5 20

2 Install Bracket Assembly 315A2134-134 2 Install 2 rivets on each bracket.

Using BMS 5-63. Refer to

Drawing 302A2100, Sheet 1 for

the bracket assembly locations. Rivet BACR15CE5M3 4

FIGURE 4. LEFT AND RIGHT UPPER/LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS MODIFICATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 3 OF 3 737-78-1063

Revision 2: October 7, 1999 26
BOEING SERVICE BULLETIN 737-78-1063

B

B

A

A

S54523

FWD

FIGURE 5. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 3 737-78-1063

Revision 2: October 7, 1999 27
BOEING SERVICE BULLETIN 737-78-1063

4 5

6

1 2 3

A-A

B-B

FWD

FWD

PANEL ASSEMBLY

AFT COWL

S54759

FIGURE 5. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 3 737-78-1063

Revision 2: October 7, 1999 28
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

1 Remove /

Discard

Retainer - Fire Seal

Support

315A2173-43 1 --

2 Remove /

Keep

Retainer - Fire Seal

Support

315A2173-41 1 --

3 Remove /

Discard

Bracket Assembly 315A2134-7 1 Remove left and right sides.

4 Remove /

Discard

Bracket Assembly 315A2134-9 2 Remove left and right sides.

5 Remove /

Discard

Bracket Assembly 315A2134-41 1 Remove left and right sides.

6 Remove /

Discard

Bracket 315A2172-9 (Left Side)

and

315A2172-36 (Right Side)

1

1

--

FIGURE 5. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS REMOVAL (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 3 OF 3 737-78-1063

Revision 2: October 7, 1999 29
BOEING SERVICE BULLETIN 737-78-1063

C

C

A

A

S54534

FWD

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 7 737-78-1063

Revision 2: October 7, 1999 30
BOEING SERVICE BULLETIN 737-78-1063

B-B

18 19 17 20

12

12

11

A-A

2 3 6 7 5 7

8

1 4

9

SEE A

SEE A

A

SEE B

10

2

16

13 15 14

FWD

RETAINER INSTALLATION ALIGNMENT

FILLET SEAL

RETAINER

RETAINER

0.375

0.625

0.060

MISMATCH

0.375

0.625

B B

BONDED PANEL

ASSEMBLY

AFT COWL

PANEL ASSEMBLY

S54800

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 7 737-78-1063

Revision 2: October 7, 1999 31
BOEING SERVICE BULLETIN 737-78-1063

25 23 24 22

21

C-C

B

FWD

26 PLACES

A

B C

B

C

C

D

D

E

E

F

E

F

F

G

G

H

H

I

H

I

I

J

J

K

J

S54788

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 3 OF 7 737-78-1063

Revision 2: October 7, 1999 32
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

1 Install Bracket 315A2172-43 (Left Side)

and

315A2172-44 (Right Side)

1

1

Fay surface seal with BMS

5-63. Ensure a small fillet

seal is formed to contact

squeeze out from fay surface

seal.

2 Install Bracket Assembly 315A2172-39 (Left Side)

and

315A2172-40 (Right Side)

1

1

Fay surface seal with BMS

5-63. Ensure a small fillet

seal is formed to contact

squeeze out from fay surface

seal.

3 Install Rivet MS20615-5M 3 Drill from pilot holes in bracket

315A2172-43 to .1590 - .1670

inch diameter.

4 Install Retainer 315A2173-46 1 Fay surface seal with BMS

5-63. Ensure a small fillet

seal is formed to contact

squeeze out from fay surface

seal.

5 Install Rivet MS20615-5M 2 Drill from pilot holes in bracket

315A2172-46 to .1590 - .1670

inch diameter.

6 Install /

Kept

Retainer 315A2173-41 1 --

7 Install Rivet MS20615-5M 3 --

8 Install Rivet MS20615-5M 3 Drill from pilot holes in bracket

315A2172-43 through bracket

assembly 315A2172-39 to

.1590 - .1670 inch diameter.

9 Install Bolt

Nut

BACB30LK2U3

BACN10YT08CS

1

1

Drill from hole in support

bracket fire seal 315A2172-11

to .1640 - .1680 inch

diameter.

10 Install Rivet MS20615-5M 1 --

11 Install Bolt

Collar

BACB30NY*K*

KFN511DL3

4

4

Torque to 25 - 35 in-lb.

12 Install Rivet BACR15CE*M* 6 Install rivets and drill to

.1280 - .1350 inch diameter

through retainer 315A2173-41

and bracket 315A2172-43.

13 Install Rivet MS20615-5M 2 Drill from pilot hole in bracket

assembly 315A2172-39.

14 Install Bracket 315A2172-55 (Left Side)

and

315A2172-56 (Right Side)

1

1

--

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 4 OF 7 737-78-1063

Revision 2: October 7, 1999 33
BOEING SERVICE BULLETIN 737-78-1063

(Continued)

STEP TASK NAME PART NUMBER QTY NOTES

15 Install Bolt

Collar

BACB30NY*K*

KFN511DL3

1

1

Drill from pilot hole in bracket

315A2172-55.

16 Fill Gap -- -- -- Fill gap with BMS 5-63. Fillet

seal to promote drainage,

remove excess sealant.

17 Install Bracket Assembly 315A2134-125 (Left Side)

and

315A2134-126 (Right Side)

1

1

Fay surface seal with BMS

5-63. Ensure a small fillet

seal is formed to contact

squeeze out from fay surface

seal.

18 Install Pin

Sleeve

Lock Collar

ASPPFV06-12AC

ASPFSV06

ASPLC2AC06

1

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Spotface along the hole

centerline .020 to .025 deep

to ensure fastener head seats

properly against bracket.

Refer to Drawing 315T3558

for ASP fasteners installation.

19 Install Pin

Sleeve

Lock Collar

ASPPFV06-15AC

ASPFSV06

ASPLC2AC06

1

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Spotface along the hole

centerline .020 to .025 deep

to ensure fastener head seats

properly against bracket.

Refer to Drawing 315T3558

for ASP fasteners installation.

20 Install Pin

Sleeve

Lock Collar

ASPPFV06-17AC

ASPFSV06

ASPLC2AC06

1

1

1

Drill hole .2030 - .2080 inch

diameter countersink far side.

Spotface along the hole

centerline .020 to .025 deep

to ensure fastener head seats

properly against bracket.

Refer to Drawing 315T3558

for ASP fasteners installation.

21 Install Fasteners -- 26 See fastener code.

22 Install Bracket Assembly 315A2134-129 (Left Side)

and

315A2134-130 (Right Side)

1

1

Fay surface seal with BMS

5-63. Ensure a small fillet

seal is formed to contact

squeeze out from fay surface

seal. Drill hole .2030 - .2080

inch diameter countersink far

side. Refer to Drawing

315T3558 for ASP fasteners

installation.

Pin

Sleeve

Lock Collar

ASPPFV06-21AC

ASPFSV06

ASPLC2AC06

4

4

4

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 5 OF 7 737-78-1063

Revision 2: October 7, 1999 34
BOEING SERVICE BULLETIN 737-78-1063

(Continued)

STEP TASK NAME PART NUMBER QTY NOTES

23 Install Bracket Assembly 315A2134-133 2 Fay surface seal with BMS

5-63. Ensure a small fillet

seal is formed to contact

squeeze out from fay surface

seal. Drill hole .2030 - .2080

inch diameter countersink far

side. Refer to Drawing

315T3558 for ASP fasteners

installation.

Pin

Sleeve

Lock Collar

ASPPFV06-21AC

ASPFSV06

ASPLC2AC06

6

6

6

24 Install Spacer 315A2107-6 1 --

25 Install Spacer 315A2107-4 1 --

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 6 OF 7 737-78-1063

Revision 2: October 7, 1999 35
BOEING SERVICE BULLETIN 737-78-1063

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the

figure.

CODE NAME PART NUMBER HOLE DIA NOTES

A Bolt

Nut

BACB30NW6K13

BACN10ZZ3D

-- --

B Bolt

Nut

BACB30NW6K14

BACN10ZZ3D

-- --

C Bolt

Nut

BACB30NW6K15

BACN10ZZ3D

-- --

D Bolt

Nut

BACB30NW6K16

BACN10ZZ3D

-- --

E Bolt

Nut

BACB30NW6K17

BACN10ZZ3D

-- --

F Bolt

Nut

BACB30NW6K18

BACN10ZZ3D

-- --

G Bolt

Nut

BACB30NW6K19

BACN10ZZ3D

-- --

H Bolt

Nut

BACB30NW6K20

BACN10ZZ3D

-- --

I Bolt

Nut

BACB30NW6K21

BACN10ZZ3D

-- --

J Bolt

Nut

BACB30NW6K22

BACN10ZZ3D

-- --

K Bolt

Nut

BACB30NW6K23

BACN10ZZ3D

-- --

FIGURE 6. LEFT AND RIGHT LOWER THRUST REVERSER INSULATION BLANKET SUPPORT

BRACKETS INSTALLATION (LEFT SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 7 OF 7 737-78-1063

Revision 2: October 7, 1999 36
BOEING SERVICE BULLETIN 737-78-1063

1 C

D

3

1

1

1

2

C

E

D

D

C

E

E

1 C

B

A

B

27 PLACES

FWD

S52003

FIGURE 7. LEFT AND RIGHT THRUST REVERSER INSULATION BLANKETS INSTALLATION (LEFT

SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 1 OF 2 737-78-1063

Revision 2: October 7, 1999 37
BOEING SERVICE BULLETIN 737-78-1063

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for half of thrust reverser.

STEP TASK NAME PART NUMBER QTY NOTES

1 Apply Adhesive

(Silicone)

RTV 106 -- Fillet seal the gap between

the blanket cutout and the

compression pad spacer.

Refer to Boeing Standard

Overhaul Practices

Manual 20-50-12.

2 Install Insulation Blanket S315A213-43 (Left Side)

and

S315A213-44 (Right Side)

1

1

--

Fasteners -- -- See fastener code.

3 Install Insulation Blanket S315A213-45 (Left Side)

and

S315A213-46 (Right Side)

1

1

--

Fasteners -- -- See fastener code.

The codes shown below agree with the letter shown in the upper left corner of the fastener symbols in the

figure.

CODE NAME PART NUMBER HOLE DIA NOTES

A Nut

Washer

0090-13365

315W1163-54

-- --

B Nut

Washer

BACS12GU3K10

315W1163-26

-- --

C Nut

Washer

BACS12GU3K12

315W1163-26

-- --

D Nut

Washer

BACN10YR3C

315W1163-26

-- --

E Nut

Washer

BACS12GU3K16

315W1163-26

-- --

FIGURE 7. LEFT AND RIGHT THRUST REVERSER INSULATION BLANKETS INSTALLATION (LEFT

SIDE SHOWN, RIGHT SIDE SIMILAR)

September 24, 1998 SHEET 2 OF 2 737-78-1063

Revision 2: October 7, 1999 38
Commercial

Airplane

Group

737

Service Bulletin

Number: 737-78-1063 Evaluation Form Date: September 24, 1998

Revision 2: October 7, 1999

ATA System: 7831

Prepared By: Ryan Ly

SUBJECT: EXHAUST - Thrust Reverser - Inner Wall Blanket Insulation Change

Use this evaluation form to tell us what you think of the quality of this service bulletin. We will use the data

that you give us to improve the quality of our service bulletins.

NOTE: Please do not use this evaluation form to tell us to make changes to your manuals. To make these

changes, please use a Publication Change Request (PCR) form.

Please give us this data:

(If necessary, please use the other side. Thank you for the time you used to give us your comments.)

OPERATOR: TODAY'S DATE:

PREPARED BY: TITLE:

ORGANIZATION: TELEX CODE:

TELEPHONE NUMBER: BASE:

Please rate the quality of this service bulletin: (good) 4321 (poor)

Please rate the quality of the illustrations: (good) 4321 (poor)

Will you do the change given by this service bulletin? Yes No If not, please explain:

Is this service bulletin easy to understand? Yes No If not, please explain:

Is this service bulletin easy to use? Yes No If not, please explain:

Are the Planning Information, Material Information, and

Accomplishment Instructions accurate? Yes No If not, please explain:

Is the Manpower estimate accurate? Yes No If not, please explain:

Give the completed evaluation form to your Boeing Field Service Representative or send the evaluation form

directly to this address:

Manager

Service Bulletin Engineering

Boeing Commercial Airplane Group

P.O. Box 3707, Mail Stop 2H-37

Seattle, WA 98124-2207