RATCHET DEG HUBSTECHNICAL MANUAL

1.

2.

3.

2

GENERAL.................................................................................................................................................31.1

VALIDITY..........................................................................................................................................................31.2

SAFETY.............................................................................................................................................................31.3

TARGET GROUP..........................................................................................................................................31.4

LAYOUT............................................................................................................................................................31.5DT SWISS MANUAL CONCEPT..............................................................................................................31.6

GENERAL MAINTENANCE INFORMATION.......................................................................................41.7

ENVIRONMENTAL PROTECTION..........................................................................................................41.8

EXCLUSION OF LIABILITY.......................................................................................................................41.9

WARRANTY....................................................................................................................................................4MAINTENANCE OF THE REAR WHEEL HUB WITH RATCHET DEG SYSTEM..............52.1

OVERVIEW......................................................................................................................................................52.2

REQUIRED TOOLS......................................................................................................................................62.3

REQUIRED WEARING PARTS AND MATERIALS............................................................................72.4

IDENTIFICATION OF YOUR WHEEL/HUB.........................................................................................82.5

REMOVING END CAPS, FREEWHEEL BODY AND FREEWHEEL SYSTEM..........................92.6

DISMOUNTING THE RING NUT.............................................................................................................102.7

DISMOUNTING THE BALL BEARING ON THE NON DRIVE SIDE...........................................112.8

DISMOUNTING THE BALL BEARING AT THE DRIVE SIDE........................................................122.9

CLEANING AND CHECKING ALL PARTS..........................................................................................132.10

MOUNTING THE BALL BEARING AT THE DRIVE SIDE...............................................................13

2.11

MOUNTING THE BALL BEARING AT THE NON DRIVE SIDE....................................................15

2.12

MOUNTING THE RING NUT....................................................................................................................162.13

MOUNTING THE FREEWHEEL SYSTEM.............................................................................................18

2.14

PUTTING ON THE END CAPS................................................................................................................20

2.15

CHECK THE FUNCTIONALITY................................................................................................................21

TROUBLE SHOOTING.........................................................................................................................22

1.

GENERAL

1.1

VALIDITY

This manual describes the component specified on the front page and the footer. This manual isvalid for the design of the product as of 21.10.24. Deviations are possible and all items are subject totechnical changes.

1.2

SAFETYThe safety instructions are classified as follows:

DANGER...indicates a hazardous situation that, if not avoided, will result in death or serious injury.

CAUTION… indicates a hazard with a medium level of risk which, if not avoided, may result in minor ormoderate injury.

NOTE… indicates a potentially hazardous situation that may result in damage to property.

1.3

TARGET GROUP

This manual is intended for the user of the component and dealers. This manual offers theexperienced user the possibility to carry out minor service work himself. If you have any doubts
about your own abilities, you should definitely contact an expert or a DT Swiss Service Center.
Any warranty claims will lapse if work is not carried out properly.

1.4

LAYOUTThe cover page and the footing provide information about the type of product and manual as wellas the version of the manual. The DT Swiss contact details can be found on the back. A list of all DT
Swiss service centers can be found at www.dtswiss.com.
This manual is intended for being printed as an A5 booklet. Only print this manual if electronic usage
is not possible.

1.5DT SWISS MANUAL CONCEPTThe DT Swiss manuals are split into the following types of manuals:– User Manual: Information for the end user on how to install and use the component.
– Technical Manual: Detailed information for the end user and the dealer on how to maintain thecomponent, spare parts and technical data.

Ratchet DEG Hubs - Technical Manual3

1.6

GENERAL MAINTENANCE INFORMATION

Unless otherwise specified, moving parts, threads, O-rings and sealings must be greased before
assembly.

CLEANING
For an optimal result of the maintenance work, every component that will be disassembled must
be cleaned. Only use cleaners and degreasers which do not damage the components. Especiallythe cleaning of O-rings and sealings requires mild cleaners. Observe the instructions for use of therespective cleaner.
DT Swiss recommends the following cleaners:– Motorex Rex– Motorex Swissclean– Motorex OPAL 2400, 3000 OPAL, OPAL 5000
Use soap water or similar mild cleaners for external cleaning.

TOOLS
To ensure a damage-free mounting and dismounting of the components, only use the tools which
are mentioned in this manual. Special tools are indicated at the beginning of a chapter in the table"Required material".
The use of different tools is at the discretion of the user. If components are damaged by the usage ofdiffering tools, the user is liable.
DT Swiss special tools are precision tools. Damage-free mounting and dismounting of thecomponents can only be ensured if the tools are working properly and if the condition of the tools
are perfect. Always keep the tools in their original packaging or adequate devices to prevent
damage.

1.7

ENVIRONMENTAL PROTECTIONThe statutory regulations shall apply. Whenever possible, avoid creating waste. Waste, especiallycarbon, lubricants, cleaners and any other fluids must be disposed in an environmentally compatible
manner.
Only print this manual if electronic usage is not possible.

1.8

EXCLUSION OF LIABILITY

The activities listed in this manual may only be carried out by persons with sufficient specialist
knowledge. The user is liable for any damage or consequential damage caused by wrongly
maintained or installed components. If you have doubts, please contact an expert or your region's
DT Swiss pro level service center.

1.9

WARRANTY

Warranty conditions, see www.dtswiss.com

42. MAINTENANCE OF THE REAR WHEEL HUB WITH RATCHET DEG
SYSTEM
2.1

OVERVIEW

56

7

8

998

10

1112

4

12

3

1

end cap non drive side5

ring nut

9ratchet2ball bearing non drive side6ball bearing drive side10

washer3axle

7

shim ring / spacer

11

freewheel body4

hub shell

8spring12end cap drive side

Ratchet DEG Hubs - Technical Manual

5

ATTENTION: There are four different types of DT Swiss hubs with ratchet freewheel. The hub types
essentially differ in the following features:

The Ratchet system is essentiallycharacterized by two loose ratchets.
The seal between the hub andfreewheel body is located on thehub.

RATCHETAll maintenance activities for this hub
can be found in the technical manualat www.dtswiss.com.

The Ratchet LN system is essentiallycharacterized by two loose ratchets.
The seal between the hub andfreewheel body is located on thefreewheel body.

RATCHET LN

All maintenance activities for this hub
can be found in the technical manualat www.dtswiss.com.

RATCHET EXP

The Ratchet EXP system is essentiallycharacterized by one loose and one
threaded ratchet.
All maintenance activities for this hub
can be found in the technical manualat www.dtswiss.com.

2.2

REQUIRED TOOLS

Tools
installation cylinder for 180/240 hubs
Ø15 / 26 x 40 mm

installation cylinder for 350 hubs
Ø15 / 28 x 40 mm

tool for ring nut

6Specification

Quantity

Article number

2

HXTXXX00N5314S

2

HXTXXX00N5024S

1

HXTXXX00N2612S

2.3

REQUIRED WEARING PARTS AND MATERIALS

Wearing parts / Materials

Specification

Quantity

Article number

DT Swiss universal grease

20 g

HXTXXX00NMG20S

DT Swiss special grease

20 g

HXT10032508Sball bearing for 180 hubs
1526 Ø15 x 26 x 7 mm ceramicball bearing for 240 hubs:
1526 Ø15 x 26 x 7 mmball bearing for 350 hubs
6902 Ø15 x 28 x 7 mm

2

HSBXXX00N6522S

2

HSBXXX00N3741S

2

HSBXXX00N2336S

1

HWYXXX00N2504S

1HWYXXX00N6599S

1

HXDXXX00N9037S

1

HSDXXX00N8101S

service kit Ratchet DEG 90T
2x ratchet, 2x spring, washer, DT Swissspecial grease
service kit Ratchet DEG 72T
2x ratchet, 2x spring, washer, DT Swiss
special grease
ring nut
M45X2 mm, steel

shim ring for 180/240 hubs
DIN988 Ø15/Ø21/0.5 mm

spacer for 350 hubs

HCD14200N9313S

2.95 mm aluminum

Ratchet DEG Hubs - Technical Manual7

Wearing parts / Materials

Specification

washerØ35.8/30.1X2.5 mm

springQuantity

Article number

1

HCD14200N6000S

2HXDXXX00N6775S

At https://www.dtswiss.com/en/support/product-support you will find all suitable spare parts after
selecting your components.

2.4

IDENTIFICATION OF YOUR WHEEL/HUB

IDENTIFICATION OF YOUR WHEELThe DT Swiss ID can be used to uniquely identify your wheel and thus the spare parts for your hub.
The sticker with the ID is located either between the spokes, in the rim well or on the tubeless tape.

IDENTIFICATION OF YOUR HUB
Every DT Swiss hub has a unique serial number. Note the number and contact a service center for
further information.

82.5
1.

REMOVING END CAPS, FREEWHEEL BODY AND FREEWHEEL SYSTEM
Pull off both end caps by hand.

If the end caps cannot be pulled off by hand,clamp the end caps carefully into a vise withground clamping jaws and pull the hub / wheelupwards.

2.

Pull the freewheel body off the hub.

3.

Remove the springs, ratchets and washer
from the hub.

4.

Remove the shim ring (180/240) / the spacer(350).

Ratchet DEG Hubs - Technical Manual

9

2.6

DISMOUNTING THE RING NUT

The ring nut only needs to be removed if it is damaged. The ring nut is only subject to slight wear
and does not need to be replaced during the service life of the hub.
Due to the torque acting on the ring nut during pedaling, the ring tightens while riding. Therefore,loosening the ring nut requires a high force. The ring nut can only be loosened, when the wheel iscomplete as the lever is much larger.
1.

Clamp the tool for the ring nut in the vise.

2.

Push the hub onto the tool with the drive sidefirst.

3.

Loosen the ring nut by turning the wheel
counterclockwise.

4.

Remove the hub from the tool.

5. Remove the ring nut.

10

2.7

DISMOUNTING THE BALL BEARING ON THE NON DRIVE SIDE1.

Tap out the ball bearing on the non drive sidewith slight hammer strokes onto the axle.

2.

Remove the ball bearing from the axle.

Ratchet DEG Hubs - Technical Manual

112.8DISMOUNTING THE BALL BEARING AT THE DRIVE SIDE

1.

Insert the short side of the axle through thesecond ball bearing on the drive side.

2.

Put the installation cylinder onto the axle.
→ By using the installation cylinder, the ballbearing cannot tilt during disassembly.
Damage to the bearing seat is notpossible.

3.

Tap out the ball bearing with slight hammerstrokes on the axle.

4.

Remove the installation cylinder from the hub.

5. Remove the ball bearing from the axle.

12

2.9

CLEANING AND CHECKING ALL PARTS

1.

Thoroughly clean all parts of the hub. The existing grease must be completely removed fromthe hub body and from the ratchets.

2.

Check the ratchets for wear.

The wear of the ratchets usually starts at theouter circumference and shows itself by strongly
flattened edges with uneven wear.
In case of heavy wear, the ratchets must bechanged immediately.

3.

Check the freewheel body for damage such as cracks.
→ Grooves from the cassette are no damages. These are normal signs of usage.

4.

Remove bad notches on the freewheel body using a file.

5. Clean the freewheel body. Metal chips and metal particles must be removed completely.

2.10

MOUNTING THE BALL BEARING AT THE DRIVE SIDE

Always mount the ball bearing on the drive side first.
1.

Grease the bearing seat with universal
grease.
→ When the ring nut is fitted, no grease must
get onto the toothing of the ring nut!

Ratchet DEG Hubs - Technical Manual

13

2.

Put the installation cylinder into the vise.

3.

Insert the long side of the axle into theinstallation cylinder.

4.

Place the hub shell onto the tool and theaxle.

5. Push a new bearing on the hub shell with thecolored side facing outwards.

6.

Put the second installation cylinder onto thebearing.

7.

Tap in the ball bearing carefully with slighthammer strokes.

8. Remove the installation cylinder and the axle
from the hub.

9.

14

Remove the wheel from the installation
cylinder in the vise and tap the bearing witha installation cylinder and the axle as a guide
until stop (approx. 0.2 mm).

2.11

MOUNTING THE BALL BEARING AT THE NON DRIVE SIDE

1.

Grease the bearing seat with universal
grease.

2.

Put the installation cylinder into the vise.

3.

Place the hub / wheel with the drive side on
the installation cylinder.

4.

Push the axle with the long side first into theball bearing on the drive side.

5. Put on a new bearing on the non drive sidewith the colored side facing outwards.

6.

Put the installation cylinder onto the bearing.

7.

Tap in the ball bearing carefully with slighthammer strokes.

8. Check the ball bearings.
→ The hub must turn smoothly.
→ The hub must not have axial play.
9.

If necessary, drive in the bearing on the nondrive side or loosen the bearing.

10. Repeat previous steps until the hub is turningsmoothly.

Ratchet DEG Hubs - Technical Manual

15

2.12

MOUNTING THE RING NUT

1.

Clamp the tool for the ring nut in the vise.

2.

Slide the ring nut onto the tool with thechamfer facing downwards.

3.

Place the hub on the ring nut and the tool.

4.

Turn the hub a little bit counterclockwise andthen carefully clockwise.
→ While screwing in, make sure that the ringnut is screwed in straight and does notcant!
→ The ring nut must be able to be screwed
in freely. As soon as greater resistanceoccurs, stop screwing in immediately.

5. Tighten the ring nut as firmly as possible byhand.

16

2.13

MOUNTING THE FREEWHEEL SYSTEMDANGER
RISK OF INJURY DUE TO LIMITED FREEWHEEL FUNCTION DUE TO INCORRECTLUBRICATION!
If too much grease is applied on the ratchets, the actuation of the ratchets may not work. Theratchets may slip during pedaling.
- Only apply a thin, even layer of grease.
- Only use the red DT Swiss special grease.
1.

Apply DT Swiss special grease evenly to theouter and the inner toothing of the ratchets
using a fine brush.
→ For an optimal functionality of thefreewheel system, a thin layer of grease issufficient.

2.

Lightly grease the teeth of the freewheel
body with DT Swiss special grease.
→ Excess grease in the recesses of thetoothing should be removed with a brush.

3.

Lightly grease the teeth of the ring nut withDT Swiss special grease.
→ Excess grease in the recesses of thetoothing should be removed with a brush.

Ratchet DEG Hubs - Technical Manual17

4.

Grease the outer surface of the ball bearing
and the sealing surface of the rotor seal on
the hub with universal grease.

5. Place the shim ring (180/240) / the spacer(350) on the axle.

6.

Make sure that both springs are not twisted.

7.

Fit the first ratchet and the first spring.

18

8. Insert the second ratchet and the second
spring with washer into the freewheel body.

9.

Put the freewheel body onto the hub.
→ Make sure that the seal on the freewheel
body is fitted the right way round and is
not twisted.

10. Check if the freewheel body can be turnedand if the ratchets are engaging.

2.14
1.

PUTTING ON THE END CAPS

Grease both ball bearings and the inside ofthe end caps with universal grease.

Ratchet DEG Hubs - Technical Manual192.

Put on the left and the right end cap.
→ The shorter end cap must be placed on
the drive side.

3.

Push in end caps by hand.

2.15
1.

CHECK THE FUNCTIONALITY

Turn the freewheel body in both directions.
→ The freewheel body can be turned counterclockwise easily.
The ratchets engage audibly and perceptibly.
→ The freewheel body cannot be turned clockwise.

2.

Check the tight fit of the end caps.
→ The end caps are firmly seated on the axle and are fully pushed on.

20

3. TROUBLE SHOOTING
Issue

ReasonSolution

Freewheel jammed /blockedShim was forgotten duringassembly.

Check correct assembly, see “2.13Mounting the freewheel system”,
page 17.

The ring nut has been fitted thewrong way round or has notbeen screwed in far enough.

Check the correct assembly of thering nut, see .

A non-fitting end cap has beenfitted.

Shimano end caps on a SRAM
XD freewheel body can cause
jamming.

Defects on the hub body, on
the freewheel body or on oneof the end caps.

Check all parts for defects andreplace parts as necessary.

One or both ratchets aremounted upside down.

Check correct assembly, see “2.1Overview”, page 5.

Too much or wrong grease on
the ratchets.

Clean and grease ratchets, see“2.13 Mounting the freewheelsystem”, page 17.

Ratchets are worn.

Replace ratchets.

One or both springs wereforgotten during assembly.

Check correct assembly, see “2.1Overview”, page 5.

Washer was forgotten duringassembly

Check correct assembly, see “2.1Overview”, page 5.

Ball bearings were notmounted correctly.

Check correct assembly, see “2.1Overview”, page 5.

Ball bearings are worn out.

Replace ball bearings.

Ball bearings are worn out.

Replace ball bearings.

Ball bearing non drive side tootight.

Check correct assembly, see “2.1Overview”, page 5.

Freewheel does not engage/ slips

Hub has axial play

Hub rotates stiffly

Mounting sequence of the ballbearings not observed.
Hub makes noise

Ball bearings are worn out.

Replace ball bearings.

Notches from the cassetteon the freewheel body.

The steel cassette works
itself into the alloy web of thefreewheel body.

Remove bad notches on thefreewheel body using a file.

Freewheel body rotates withdifficulty.

Ball bearings in the freewheel
body are worn out.

Replace freewheel body.

Ratchet DEG Hubs - Technical Manual21IssueReasonFreewheel is too noisy / tooquiet.

The perception of the freewheel sound is very subjective. Whilesome riders prefer a loud freewheel sound, other riders wanta quiet freewheel. In principle, the freewheeling sound can be
influenced by the amount of grease between the ratchets. Less
grease increases the freewheeling sound, but at the same timeleads to higher wear.

22Solution

DT SWISS AG

DT SWISS ASIA LTD.

Längfeldweg 101
CH - 2504 Biel/Bienne
info.ch@dtswiss.com

No.5, Jingke 5th Rd., Nantun District
Taichung City 408
Taiwan (R.O.C.)
info.tw@dtswiss.com

DT SWISS, INC.

DT SWISS DEUTSCHLAND GmbH2493 Industrial Blvd.
USA - Grand Junction, CO 81505
info.us@dtswiss.com

Albert-Einstein-Strasse 359302 Oelde
Germany
info.de@dtswiss.com

DT SWISS (FRANCE) S.A.S.

DT SWISS POLSKA Sp. z o.o.

Parc d‘Activites de la Sarrée
Route de Gourdon
F - 06620 Le Bar sur Loup
info.fr@dtswiss.com

ul. Towarowa 36
PL-64-600 Oborniki
Polandinfo.pl@dtswiss.com

Subject to technical alterations, errors and misprints excepted. All rights reserved.
© by DT SWISS AG - www.dtswiss.com
HXD10000005104S
V2024.10