DT SWISS RATCHET EXP User manual
RATCHET EXP HUBS
TECHNICAL MANUAL
V2022.01
2
1. GENERAL .................................................................................................................3
1.1 Validity.......................................................................................................................... 3
1.2 Safety ........................................................................................................................... 3
1.3 Target group................................................................................................................. 3
1.4 Layout........................................................................................................................... 3
1.5 DT Swiss manual concept ........................................................................................... 3
1.6 How to use the manual ............................................................................................... 4
1.7 General Maintenance Information.............................................................................. 4
1.8 Environmental protection............................................................................................ 4
1.9 Exclusion of liability..................................................................................................... 4
1.10 Warranty....................................................................................................................... 4
2. MAINTENANCE OF THE REAR WHEEL HUB WITH RATCHET EXP®SYSTEM.......5
2.1 Overview....................................................................................................................... 5
2.2 Required tools.............................................................................................................. 6
2.3 Required wearing parts and materials....................................................................... 6
2.4 Removing end caps, freewheel body and freewheel system ..................................... 8
2.5 Dismounting the ball bearing on the non drive side.................................................. 9
2.6 Dismounting the threaded ratchet ............................................................................. 10
2.7 Dismounting the bearing from the threaded ratchet................................................. 11
2.8 Checking the sealing................................................................................................... 12
2.9 Cleaning and checking all parts ................................................................................. 12
2.10 Pressing the ball bearing into the threaded ratchet.................................................. 13
2.11 Screwing the threaded ratchet with the bearing into the hub shell.......................... 14
2.12 Mounting the ball bearing at the non drive side ........................................................ 16
2.13 Mounting the hub seal................................................................................................. 17
2.14 Mounting the freewheel system.................................................................................. 18
2.15 Putting on the freewheel body and the end caps....................................................... 20
2.16 Check the functionality................................................................................................ 20
3. TROUBLE SHOOTING...............................................................................................22
Ratchet EXP - Technical Manual 3
1. GENERAL
1.1 VALIDITY
This manual describes the component specied on the front page and the footer. This manual is
valid for the design of the product as of 11.01.22. Deviations are possible and all items are subject
to technical changes.
1.2 SAFETY
The safety instructions are classied 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 or
moderate 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 the
experienced user the possibility to carry out minor service work himself. If you have any doubts
about your own abilities, you should denitely contact an expert or a DT Swiss Service Center.
Any warranty claims will lapse if work is not carried out properly.
1.4 LAYOUT
The cover page and the footing provide information about the type of product and manual as well
as 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.
1.5 DT SWISS MANUAL CONCEPT
The 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
the component, spare parts and technical data.
4
1.6 HOW TO USE THE MANUAL
The steps described in this manual must be carried out in the order they are shown. If steps are
ignored or executed in a wrong order, the function of the component cannot be guaranteed.
1.7 GENERAL MAINTENANCE INFORMATION
Unless otherwise specied, moving parts, threads, O-rings and sealings must be greased before
assembly.
CLEANING
For an optimal result of the maintenance works, every component that will be disassembled must
be cleaned. Only use cleaners and degreasers which do not damage the components. Especially
the cleaning of O-rings and sealings requires mild cleaners. Observe the instructions for use of
the respective 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
of differing tools, the user is liable.
DT Swiss special tools are precision tools. Damage-free mounting and dismounting of the
components 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.
1.8 ENVIRONMENTAL PROTECTION
The statutory regulations shall apply. Whenever possible, avoid creating waste. Waste, especially
carbon, lubricants, cleaners and any other uids must be disposed in an environmentally
compatible manner.
Only print this manual if electronic usage is not possible.
1.9 EXCLUSION OF LIABILITY
The activities listed in this manual may only be carried out by persons with sufcient 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.
1.10 WARRANTY
Warranty conditions, see www.dtswiss.com
Ratchet EXP - Technical Manual 5
2. MAINTENANCE OF THE REAR WHEEL HUB WITH RATCHET EXP®SYSTEM
2.1 OVERVIEW
12
3
45678910 11
12 13
1 end cap non drive side 8 spacer
2 ball bearing non drive side 9 loose ratchet
3axle 10 spring
4 hub shell 11 washer
5 ball bearing drive side 12 freewheel body
6 threaded ratchet 13 end cap drive side
7 hub seal
6
2.2 REQUIRED TOOLS
Tools Specication Quantity Article number
tool kit*, consisting of: 1 HWTXXX00N2544S
installation cylinder Ø15 x 24 x 60
mm
(only required for ball bearings on
the non drive side with 180 hubs)
1 HXTXXX00N5025S
installation cylinder Ø15 x 26 x 40
mm 1 HXTXXX00N5314S
mounting / dismounting tool for the
threaded ratchet 1 HXTXXX00N8387S
mounting / dismounting tool ball
bearing drive side 1 HXTXXX00N6106S
installation tool for hub seal 1 HXTXXX00N1000S
* The tool kit can be purchased as a complete set or the included tools can be purchased
separately.
2.3 REQUIRED WEARING PARTS AND MATERIALS
Wearing parts / Materials Specication Quantity Article number
DT Swiss universal grease 20 g HXTXXX00NMG20S
DT Swiss special grease 20 g HXT10032508S
Ratchet EXP - Technical Manual 7
Wearing parts / Materials Specication Quantity Article number
ball bearing for 180 hubs:
• Drive side
1526 Ø15 x 26 x 7 mm
1 HSBXXX00N3741S
• Non-drive side
6802 Ø15 x 24 x 5 mm 1 HSBXXX00N2464S
ball bearing for 240 hubs:
Drive side / non-drive side
1526 Ø15 x 26 x 7 mm
2 HSBXXX00N3741S
hub seal 1 HSOXXX00N1031S
spacer HRDXXX00N8242S
Service Kit 36 teeth consisting of
• loose ratchet 36T
• threaded ratchet 36T
• spring
• washer
• DT Swiss special grease
1 HWYXXX00N0042S
Service kit 54 teeth consisting of:
• loose ratchet 54T
• threaded ratchet 54T
• spring
• washer
• DT Swiss special grease
1 HWYXXX00N9376S
8
2.4 REMOVING END CAPS, FREEWHEEL BODY AND FREEWHEEL SYSTEM
1. 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 with
ground clamping jaws and pull the hub / wheel
upwards.
2. Pull the freewheel body off the hub.
3. Pull the spacer off the axle.
Ratchet EXP - Technical Manual 9
4. Remove the spring, the ratchet and the
washer from the freewheel body.
2.5 DISMOUNTING THE BALL BEARING ON THE NON DRIVE SIDE
1. Tap out the ball bearing on the non drive
side with a plastic hammer with slight
hammer strokes onto the axle.
2. Remove the ball bearing from the axle.
10
2.6 DISMOUNTING THE THREADED RATCHET
Due to the torque which acts on the threaded ratchet during pedaling, the threaded ratchet
tightens during riding. We recommend loosening the ratchet only when the wheel is complete as
the lever is much larger.
1. Clamp the mounting / dismounting tool for
the threaded ratchet into the vice.
2. Fit the hub or wheel onto the tool in such a
way that the teeth of the tool engage in the
teeth of the threaded ratchet.
3. Insert the axle with the long side rst into
the hub and through the threaded ratchet.
→If the axle is inserted through the ratchet
with the short side rst, the tool is not
sufciently guided. The axle, the ratchet
or the tool can be damaged.
HXTXXX00N8387S
4. Push the installation cylinder onto the non
drive side of the hub.
5. Loosen and screw off the ratchet by turning
the hub counterclockwise.
→While unscrewing the threaded ratchet,
some pressure should be applied to the
hub from above so that the tool engages
securely in the ratchet at all times.
6. Remove the hub from the tool.
HXTXXX00N5314S/
HXTXXX00N5025S
7. Remove the ratchet with the bearing.
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