LYCOIIIIIIIIG MANDATORY 

\\ illi:un,Jwrc. I'\ ~~ul t .-... \. 

Tel. +1-800-258-3279 (U.S. and Canada) 

Tel. +1-570-323-6181 (International) 

Fax. +1-570-327-7101 I SERVICE BULLETIN I www.lycoming.com 

DATE: October 10. 2014 Service Bulletin No. 6 14A 

(Supersedes Service Bulletin No. 6 14) 

Engineering Aspects are 

FAA Approved 

SUBJECT: Exhaust System Inspection and Turbocharger Mounting Bracket Replacement 

MODELS AFFECTED: Lycoming Engine Model TI0-540-A.J I A with a Serial Number Identified in 

Table I or any TI0-540-AJ I A with a Turbocharger Mounting Bracket 

Purchased as a Spare between April S, 2012 and May 29, 2014 

TIME Of COMPLIANCE: The Required Action must be completed within the next 25 hours or next 

scheduled maintenance event (whichever occurs first) for: 

I REASON FOR REVISION: 

• Engines identitied in Table I with 0 to 400 hours time in service since 

new, rebuilt, or overhauled. 

• Engines with a turbocharger mounting bracket purchased as a spare 

between April 5, 201 2 and May 29, 20 14, with 0 to 400 hours time in 

service since bracket replacement. 

• Return turbocharger mounting brackets currently in stock. 

The Required Action must be completed at next overhaul for: 

• Engines identified in Table I with over 400 hours time in service since 

nevv rebuilt, or overhauled. 

• Engines with a turbocharger mounting bracket purchased as a spare 

between April 5, 2012 and May 29, 20 14, with over 400 hours time in 

service since bracket repl acement. 

Engine serial number L-13961-6 1 E was added to Table I. There are no other 

changes. 

NOTE 

Incomplete review of all the information in this document can cause errors. Read the entire 

Service Bu lletin to make sure you have a complete understanding of the requirements. 

This Service Bul letin contains turbocharger mounting bracket replacement instructions, 

disassembly/inspection/assembly instructions for the exhaust system (Figures I and 2), and warranty 

instructions for specific Lycoming engine models TI0-540-AJ I A. identified in Table I. This mandatory 

inspection and tu rbocharger mounting bracket replacement must be done on engines identified in the Time 

of Com pi iance above. 

Table I 

Serial Numbers of Affected Lycoming Engine Models TI0 -540-AJ I A 

Engine Serial Number Engine Serial Number Engine Serial Number Engine Serial Number 

L-6748-6 1 E L- 13828-61 E L-I 3832-61 E L-1 3843-61 E 

L-1 3 81 7-6 1 E L- 13831 -61 E L- 13833-6 1 E L- I 3 84 7-61 E 

L- 138 19-6 1E L-1 3823-61 E L-1 3839-6 1 E L- 13855-6 1 E 

~ ISSUED REVISED PAGE NO. REVISION General Aviation 

~, Manufacturers Association MO I DAY I YEAR MO I DAY I YEAR I of 12 A 07 I 24 I 14 10 I 10 I 14 0 2014 t\\CO Coi]JOrauoo 1\ ll lu s Reserved 

Lycoming Eng•nes 1$ a davlsion of th 'Co Corporal eon 
Table I (Cont.) 

Serial Numbers of Affected Lycoming Engine Models TI0-540-J\J I A 

L-1 3856-61 E L- 13947-61 E lr 140 I 1-6 I E RL-255 1-61 E 

L- 13857-61E L- 13948-61 E L- 140 13-6 1 E RL-2848-61 E 

L- 13866-61 E L-13949-61 E L- 140 14-6 1 E RL-3450-61 E 

L- 13867-61£ L-13950-61 E L- 140 15-61 E RL-4138-61 E 

L-13873-61 E L-1 3960-61 E L-14017-61 E RL-7243-61 E 

L-1 3882-61 E I L-1396 1-61 E L-14024-6 1 E RL-7512-61 E 

L-1 3883-61 E L-1 3962-61 E L-14025-61 E RL-8435-61 E 

L-1 3884-6 1 E L-1 3967-61 E L- 14026-61 E RL-8767-61 E 

L-13885-61 E L-1 3973-61 E L-14028-61 E RL-8914-61 E 

L-13886-61 E L- 13975-61 E L-14034-61 E RL-8979-61 E 

L- 13895-61 E L- 13976-61 E L- 14054-6 1 E RL-9399-6 1 E 

L-13896-61 E L- 13979-61 E L- 14055-6 1 E RL-9466-61 E 

L- 13898-61 E L- 13981-61£ L- 14056-61 E RL-9618-6 1 E 

L-1 3900-61 E L-1 3983-61 E L-14057-61 E RL-9663-61 E 

L-1 3902-61 E L-1 3984-61 E L-14062-61 E RL-1 0098-61 E 

L-13907-61 E L-1 3993-61 E L-1 4063-61 E RL-1 0194-61 E 

L- 13913-6 IE L-13996-61 E L- 14066-61 E RL-10249-61 E 

L- 139 15-61E L-13997-61£ L-14067-6 1 E RL- 1 06 15-6 1 E 

L- 13930-61E L-13998-61 E L-14069-61 E R L- 1 I 0 I I -61 E 

L-1393 1-61£ L-1 3999-61 E L-1407 1 -61 E RL- 12 12 1-61 E 

L-13934-61 E L-14000-61 E L-14076-61 E RL- 12 163-6 1 E 

L-1 3936-61 E L-1400 1-61 E L-14077-61 E RL-1 2343-61 E 

L-1 3938-61 E L-14003-61 E RL-1726-61 E RL-1 3352-61 E 

L-1 3939-61 E L- 14004-61 E R L-1 81 0-61 E RL-1 360 1-61 E 

L-1 3946-61 E L- 14005-6 1 E RL- 1862-61 E 

Required Action 

Exha ust System Disassembly and Removal 

& cAUTION 

BEFORE DISASSEMBLY OF THE EXHAUST SYSTEM, IF THE ENGINE HAD BEEN 

OPERATING, LET THE ENGINE AND THE EXHAUST SYSTEM COOL FOR I HOUR 

OR LONGER AFTER ENGINE SHUTDOWN TO PREVENT BURNS. 

NOTE 

This procedure applies onl y to exhaust system components (Figure 3) lhal are installed on the 

Lycoming TJ0-540-AJ I A engine at the factory and not airframe-installed exhaust system 

components. As a point of reference, Figure 4 identifies some of the factory-installed exhaust 

components on the engine and airframe-installed exhaust components around the 

turbocharger. 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR 

2 of I2 A S.B. 6I4 

07 I 24 I 14 IO I IO I 14 
NOTE 

This procedure can be done on an engine installed in an airframe. 

I' 

Examine This Saddle 

Reinforced Weld Jomt 

I 

Turbocharger 

/.::: ,,.... ......... Jt.,~~-

~i~f( ~ 

~~'-..J · '-"'" MoooOog "'""" 

T .. k urbo 011 Drau1 Tan 

Exllaust Pipes 

Figure 1 

Installed Exhaust System (# I, #3, #5 Cyl inder- Right Side of Engine) 

Exhaust Pipes 

Examine This Saddle 

Reinforced Weld Joinl 

Figure 2 

. . , 

Insta lled Exhaust System (#2, #4, #6 Cylinder- Left Side of Engine) 

ISSUED REVISED PAGE NO. REVlSION 

MO I DAY I YEAR MO I DAY I YEAR 

3 of 12 A 07 I 24 I 14 10 I 10 I 14 

S.B. 614 
Left Exhaust Ptpe 

for Cyhnder 2 

Adapter for Exhaust 

Pipe Cylinder 4 

Left Exhaust Pipe 

for Cylinder 6 

MO 

07 

Exhaust 

Transition 

Assembly 

ISSUED 

I DAY I YEAR 

I 24 I I4 

MO 

IO 

Exhaust Flange Gasket 

Exhaust Ptpe for Cylinder 2 

Exhaust Pipe for Cylinder 5 

Exhaust Bypass Valve 

Tu tbocharger 

Figure 3 

Nut 

Adapter (for bhaust 

Pipe forCyltnderl) 

Exhaust Pipe for Cylinder I 

Examine This Saddle 

Reinforced Weld Joint 

Exhaust Ptpe for Cylinder 3 

Exhaust Pipe for 

lntercylinder 5 

TI0-540-AJIA Turbocharged Exhaust System 

REVISED PAGE NO. REVISION 

I DAY I YEAR 

4 of I2 A S.B. 6I 4 I IO I I4 
I. Identify affected engines in Table I that are either installed in your aircraft or in your inventory. 

2. Before disassembly either draw a sketch or take a photograph of the exhaust system installed on the 

engine and attached to the airframe for reference on reassembly. 

3. Make a copy of the :Exhaust Syste1n Inspection/Asse1nbly Checklist included in this Service Bulletin 

for each affected engine to be examined as a record of inspection and replacement of the 

turbocharger mounting bracket in compliance with th is Service Bul letin. 

4. To access, the exhaust system, remove any airframe components as necessary per the airframe 

manufacturer's instructions. 

- , •• - ... 1 

Figure 4 

Installed Exhaust System 

5. Remove the bolt and self-locking nut 

from the exhaust system end of the cable 

assembly (Figure 5). Discard the selflocking nut. 

Alrlntakc/ 

~ I / ./ 

Turbocharger 

I 

Boll 

Figure 5 

Exhaust System End of the Cable Assembly 

6. Remove the V-band coupling from the following two slip joint connections (Figure 3) on the exhaust 

system: 

• Exhaust pipe for intercylinder number 5 and exhaust transition assembly connection 

• Exhaust transition assembly and exhaust bypass valve connection 

7. Remove and discard the gasket (Figure 3) from each of the two removed V-band couplings. 

& CAUTION 

DO NOT USE ETCH TOOLS, GRAPHITE LEAD PENCIL, OR SCRIBE TO APPLY AN 

IDENTIFIER MARK ON EXHAUST PIPES. USE EITHER A NON-GRAPHITE 

MARKER SUCH AS COLORBRITE NO. 2127 OR 4127 OR A MARKS-A-LOT. 

8. For reference, prior to exhaust system disassembly, use either a non-graphite marker such as 

Colorbrite No. 2127 or 4127 or a Marks-A-Lot marker to identify the exhaust system pipes on each 

side of the engine (Figure 3). 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR S.B. 614 5 of 12 A 07 I 24 I 14 10 I 10 I 14 
& CAUTION 

AS A SAFETY PRECAUTION, USE THREE PEOPLE TO COMPLETE THE NEXT 

STEPS TO PREVENT INJURY AND PARTS FROM FA LLING. 

9. While one person removes the self-locking nuts and washers (Figure 3) from the vertical portion of 

the three exhaust pipes on the 2-4-6 (even numbered) cylinder side of the engine (Figure 2). two 

people lower and remove the exhaust pipes and put them on a clean work surface. Discard the selflocking nuts and gasket from each exhaust pipe flange at the cylinder head. 

I 0. Repeat the previous step for the three exhaust pipes on the 1-3-5 (odd-numbered) cylinder side of the 

engine (figure I). 

I I. Disconnect the hose and air inlet tube from the turbocharger (figure 6). 

ISSUED REVISED 

MO I DAY I YEAR MO j DAY j 

07 l 24 l 14 10 I 10 I 

YEAR 

14 

Figure 6 

Turbocharger 

PAGE NO. 

6 of 12 

.. --------

REVISION 

;\ S.B. 614 
Nut 

Lock Washer 

Washer 

Turbo Oil Drain Tank -

Turbocharger 

Mounting Bracket 

Screw 

Figure 7 

. tl 

Turbo Oil Drain Tank 

Support Bracket 

~ViewA Lock Washer 

Washer 

Turbo Oil Drain Tank and Support Bracket 

12. Disconnect and put a cap on the two hoses connected to fittings on the turbo oil drain tank (Figure 7) 

and the hose connected to fitting on the turbocharger (Figure 7 - View A). 

13. Remove the vertical bolt, washer, and self-locking nut from the lug on the exhaust transition 

assembly (Figure 6). 

NOTE 

In the next step, keep the 90° bracket (Figure 7) and clamps attached to the hoses. 

14. Remove the screw, washer, lock washer, and nut from the portion of the 90° bracket that attaches to 

the turbo oil drain tank support bracket and turbocharger mounting bracket (Figure 7). Discard the 

lock washer. 

15. Remove the horizontal bolt, two washers, lock washer, and nut from the lug on the transition 

assembly and rear turbo support bracket (Figure 6). Discard the lock washer. Remove and keep the 

lug. 

16. Support the turbocharger assembly and remove the self-locking nuts and washers from the studs and 

turbocharger mounting bracket on the oil sump (Figure 6). Discard the self-locking nuts. 

17. Carefully remove, as a unit, the turbocharger from the engine still attached to the exhaust transition 

assembly, turbocharger mounting bracket, turbocharger oil drain tank, and its support bracket. Put 

the assembly on a clean work surface. 

18. Bend down the tabs of the lock plate (Figure 6). 

19. Remove the two bolts, spacer, and lockplate that attach the turbocharger mounting bracket to the 

turbocharger (Figure 6). Discard the lockplate. Keep the spacer for reassembly. 

20. Remove the se lf-locki ng nut and washer from the stud that attaches the tu rbocharger mounting 

bracket to the exhaust transition assembly (Figure 6). Discard the self-locking nut. 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR S.B. 614 I I I I 7 of 12 A 07 24 14 10 10 14 
21. Remove the turbocharger mounting bracket and send th is bracket to Lycoming Engines to receive a 

replacement bracket as per warranty terms in this Service Bulletin. Refer to the replacement parts list 

iry the "Warranty Instructions" section ofthis Service Bulletin. 

22. Remove the three bolts, three self-locking nuts and three washers that attach the exhaust transition 

assembly to the turbocharger (Figure 6). Discard the self-locking nuts. 

Exhaust System Inspection 

& CAUTION 

CRACKED EXHAUST PIPES IN ANY EXHAUST SYSTEM COMPONENT, 

ESPECIALLY WELDED JOINTS, CAN CAUSE TOXIC GASES, SUCH AS CARBON 

MONOXIDE, TO ENTER THE COCKPIT. 

NOTE 

Send any part that is cracked or damaged to Lycoming Engines for replacement under 

warranty terms identified in th is Service Bulletin. 

I. Use a I Ox power magnifying glass to examine the weld joints of the exhaust pipe for cylinder #3 

(Figure 3). Closely examine the saddle reinforced weld joint (Figures 8 and 9). If any cracks or 

damage are found , replace the exhaust pipe. 

Figure 8 

Saddle 

Inspect with 1 OX power magnifying glass. 1 

Figure 9 

Saddle 

2. Examine the #2 cylinder exhaust flange for damage or distortion. The flange must be straight and 

have no signs of exhaust leaking past the gasket. If the flange or pipe is distorted or damage, replace 

the pipe. 

3. Examine the #2 cylinder exhaust port for signs of an exhaust leak or pulled exhaust studs. If evidence 

of leakage, damage, or pulled studs are found, replace the cylinder. 

4. Complete a visual inspection on the entire exhaust system (Figures I, 2, and 3) for any signs of leaks, 

distortion, or damage. Examine closely at all weld joints. Replace any damaged component. 

5. Clean the exhaust pipes and flanges with approved solvents. Remove carbon or exhaust residue from 

slip joint mating surfaces with a red Scotch-Brite T M pad or equiva lent abrasive pad. Remove any 

debris. Visually examine the cleaned exhaust pipes. 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR S.B. 614 I I I I 8 of 12 A 07 24 14 10 10 14 
Exhaust System Assembly and Installation 

I. Apply a uniform coating of Loctite® C5-/\ 00 anti-seize compound or equi valent to the slip joint 

mating surfaces (Figure 3) of the exhaust pipes. 

2. Assemble the exhaust pipes at the slip joints and make sure there is no binding of the joined parts. If 

any binding or tightness is found, replace the exhaust pipes. 

3. Apply a uniform coat of Loctite® C5-A ®anti-seize compound or equivalent to the stud (Figure 6) on 

the exhaust transition assembly. 

NOTE 

When installing exhaust system components do not fully tighten any fasteners until all 

components of the exhaust system are properly aligned and the fasteners can be torqued 

evenly. Components must be able to be manipulated to align them. 

4. Attach the exhaust transition assembly to the turbocharger (Figure 6) with the two bolts, three 

washers, and three new self-locking nuts hand-tight. 

5. Install the lug on the exhaust transition assembly with the verti cal bolt, washer, and new self-locking 

nut (Figure 6) hand-tight. 

6. Apply a uniform coat of Loctite® C5-A ®anti-seize compound or equivalent to the threads of the two 

bolts that attach the new turbocharger mounting bracket, lockplate, and spacer to the turbocharger. 

7. Install the new turbocharger mounting bracket PIN 07 A22265 on the turbocharger (Figure 6) and the 

stud on the exhaust transition assembly with the two bolts, spacer, and new lockplate. Torque the 

two bolts to 160 to 190 in.-lb. (18 to 21 Nm). Bend the tabs (Figure 6) of the lockplate into place. 

8. Install the turbocharger mounting bracket with the turbocharger and exhaust transition assembly on 

the studs on the oi I sump (Figure 6) with the washers and new self-lock ing nuts hand-tight. 

9. Install the washer and new self-locking nut on the stud on the exhaust transition assembly hand-tight. 

I 0. Install the horizontal bolt through the lug on the exhaust transition assembly with a washer, and new 

self-locking nut (Figure 6) hand-tight. 

II. Install the screw, washer, and new self-locking nut that attaches the turbocharger oil drain tank 

support bracket, and 90° bracket with the clamps attached, to the turbocharger mounting bracket 

(Figure 7). Torque the clamps to 49 in.-lb. (5.5 Nm). 

12. Apply a uniform coat of Loctite® C5-A ® anli-seize compound or equivalent to the first three threads 

of each exhaust stud in all six cylinder heads. 

& CAUTION 

USE CARE TO SUPPORT THE ENTIRE EXHAUST SYSTEM DURING 

INSTALLATION. DO NOT FORCE. PRY, OR BEND COMPONENTS DURING FINAL 

ALIGNMENT TO PREVENT DAMAGE TO THE PARTS. 

13. Assemble the exhaust system on the engine as applicable. 

NOTE 

Refer to the latest revision of Lycoming Service Instruction No. Sl-1562 for exhaust system 

installation guidelines. 

14. Refer to the pre-disassembly photo or sketch. Attach each exhaust pipe to the corresponding cylinder 

head each with a new flange gasket. new washers, and new self-locking nuts. Do not ful ly torque the 

self-locking nuts. 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR S.B. 614 I I I I 9 of 12 A 07 24 14 10 10 14 
15. Make sure there are no gaps at pipe connections and all pipes are correctly aligned before the final 

torque of the fasteners. 

NOTE 

The V-band coupling at the exhaust transition must be correctly aligned. Incorrect alignment 

of the V -band coupling at the exhaust transition is an indication that the exhaust system is not 

correctly installed. If the V-band coupl ing does not align, adjust the exhaust system 

components until the V-band coupling is in correct alignment. A slight adjustment to the 

turbocharger orientation also can be made to correct the V-band coupling al ignment. 

I 6. After va lidation of the al ignment and configuration of the exhaust pipes, slide the V-band coupling 

with a new gasket over the exhaust pipe for intercyl inder number 5 and exhaust transition assembly 

connection. Press the V -band coupling on the flanges. 

17. Complete fina l torques to ensure all fasteners are torqued: 

A. Torque the V -band coup I ing at the exhaust pipe for intercylinder number 5 and exhaust transition 

assembly connection to 85 in.-lb. (I 0 Nm). Refer to the latest revision of Lycoming Service 

Instruction No. Sl-1 238 for Assembly and Torque Procedures for V-Bancl Couplings. 

B. Torque the nuts that attach the ne'vv turbocharger mounting bracket (Figure 6) to the oil sump to 

30 ft.-lbs. (40.7 Nm). 

C. Torque the self-locking nuts that attach the exhaust transition assembly (Figure 6) to the 

turbocharger to 30 ft.-lbs. (40.7 Nm). 

D. Torque the nut that attaches the exhaust transition assembly to the turbocharger mounting 

bracket (Figure 6) to 30 ft.-lbs. (40.7 Nm). 

E. Torque the nuts that attach the exhaust pipes to the cylinders (Figure 3) to 96 in.-lb. ( II Nm) -on 

all cylinders. 

18. Remove the caps from the three hoses. Connect one hose to the turbocharger (Figure 7 - View A) 

and the other two hoses to the turbo oil drain tank (Figure 7). 

19. Lubricate the inside of the hose for the air intake tube with engine oil mixture ( 15% pre-lubricant 

(STP or equiva lent) and 85% SAE 50 mineral-base aviation-grade lubricating oil) and connect the 

air intake tube to the turbocharger (Figure 6). Torque the clamps to 35 in.-lb. (4 Nm). 

20. Install the V-bancl coupling and new gasket at the exhaust bypass va lve and exhaust transition 

assembly connection. Torque the V-band coupling to 85 in.-lb. (9.6 Nm). 

2 1. Install the exhaust system end of the cable assembly (Figure 5) with a bolt and new self-locking nut. 

Torque the nut to 96 in.-lb. (I 0.9 Nm). 

22. Refer to the airframe manufacturer's maintenance manua l and reinstall all airframe components 

previously removed to gain access to the Lycoming exhaust system. 

23. Record replacement of turbocharger mounting bracket, any correcti ve action, and compliance with 

this Service Bulletin in the engine logbook. 

ISSUED REV ISED PAGE NO. REVISION 

MO I DAY I YEA R MO I DAY I YEAR 

10 of 12 S.B. 6 14 

07 I 24 I 14 10 I 10 I 14 1\ 
Wa rran ty Instructions and Replacemen t Parts for Engines/Pa rts Affected bv Service Bulletin No. 614 

l. Contact an Authorized Lycoming Distributor to order the replacement parts listed below. 

Parts Necessary for Requi•·ed Action 

Part Name Lycoming Part Number Qty. 

BRACKET. Turbo mounting 07A22265 I 

NUT, 3/8-24 self-locking MS20500-624 8 

LOCKPLATE LW-12291 I 

GASKET, Exhaust flange LW-18234 12 

GASKET, V-band coupling, 2- 1/4 tube 78246 I 

WASHER, 1/4 plain AN960C416 24 

NUT, I /4-20 se lf-locking STD-2044 25 

GASKET, V -band coupling, 2-1 /4 tube 75845 1 

WASHER, No. I 0 internal lock STD-251 I 

Additiona l Parts T hat Could be Necessary Based on Res ults of Inspection 

Cylinder Kit 05K22680 I 

ADAPTER, Exhaust pipe, cyl. no. I 40G22384 I 

PIPE, Exhaust, inter. cyl. no. 5 40822267 I 

FLANGE, Exhaust manifold 40C2238 1 I 

ADAPTER, Exhaust pipe, cyl. no.4 40G22384 I 

PIPE, Exhaust, cyl. no. I 40822190 I 

PIPE, Exhaust, cyl. no. 2 40822318 I 

PIPE, Exhaust. cyl. no. 3 40822621 I 

PfPE, Exhaust, left, cyl. no. 4 40822379 I 

PTPE, Exhaust, cyl. no. 5 40822193 1 

PTPE, Exhaust, left, cyl. no. 6 40822380 1 

PIPE, Exhaust, cyl. no. I with EGT probe hole* 40823387 I 

PIPE, Exhaust, cyl. no. 2 with EGT probe hole* 40823386 I 

PIPE, Exhaust. cyl. no. 3 with EGT probe hole* 40823388 l 

PIPE, Exhaust, cyl. no. 4 with EGT probe hole* 40823385 l 

PlPE, Exhaust, cyl. no. 5 with EGT probe hole* 40823389 I 

PIPE, Exhaust, cyl. no. 6 with EGTprobe hole* 40823384 I 

* For use with Cessna OEM G 1000 EGT Indication Systems only. 

2. Upon receipt, complete the installation procedure. 

3. Return the removed turbocharger mounting bracket P/N 07 A22265 and any cracked or damaged 

exhaust system components to Lycoming Engines through the same Authorized Lycoming 

Distributor that ordered the replacement turbo mounting bracket P/N 07 A22265 and fi le a warranty 

cla im for: 

A. Reimbursement of the replacement parts. 

B. Associated Freight. 

C. Removal and Reinstallation Labor Allowance of not more than 8 hours. 

If you have any questions, contact Lycoming Field Service by phone at 570-327-7222 or 877-839-7878. 

NOTE 

Warranty consideration is available for 12 months from the date of issue of this Service 

Bulletin. 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR 

I I of 12 A S.B. 614 

07 I 24 I 14 10 I 10 I 14 
Exha ust System Inspection/Assembly Checldist 

Engine Seria l Number: Date of Inspection 

Hours of engine service: Inspection done by: 

Task Findings/Corrective Action 

Use a I Ox power magnifyi ng g lass to examine 

the weld joints of the exhaust pipe for cylinder 

#3. Give specia l attention to the saddle 

reinforced weld joint (Figures 8 and 9). 

Examine the studs that attach the exhaust pipe 

on the #2 cylinder for any ind ication that they 

have pulled away from the cylinder head. 

Examine the exhaust transition assembly 

(Figure 3), its flange, and slip joints for cracks, 

bulges, dents, or residue. 

Complete a visual inspection on the entire 

exhaust system for any signs o f leaks, 

distortion, or damage. Examine closely at all 

we ld jo ints. 

Clean the exhaust system with approved 

solvents. Remove carbon or exhaust residue off 

of sli.R joint mating surfaces with a red ScotchBrite "' pad or equiva lent abrasive pad. 

Apply a uniform coating of Loctite® C5-A ® 

anti-seize or equivalent to the slip joint mating 

surfaces, assemble the exhaust pipes at the slip 

jo ints and test for freedom of movement. 

Replace the turbocharger mounting bracket. 

Return the removed turbocharger mounting 

bracket and any cracked or damaged exhaust 

system components to Lycoming Engines. 

ISSUED REVISED PAGE NO. REVISION 

MO I DAY I YEAR MO I DAY I YEAR S.B. 614 I I I I 12 of 12 A 07 24 14 10 10 14