Servicing The Dropout System; Sram Udh (Universal Derailleur Hanger) System; 1: Removal Of The Sram Udh; 2: Re-Assembly Of The Sram Udh - Whyte E-180 S MX Supplementary Service Manual

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7.0: SERVICING THE DROPOUT SYSTEM

7.1: SRAM UDH (Universal Derailleur Hanger) System

Tools Required: 8mm Allen Key, Torque Wrench.
NOTE: The UDH Fixing Bolt (1) is a Left-Hand Thread. Refer to all Sram Documentation pertaining to the Sram UDH system.

7.1.1: Removal of the SRAM UDH

Reference figure 18. To remove the Sram UDH derailleur hanger, using the 8mm Allen Key, undo the 8mm UDH fixing bolt (1)
and remove from the frame taking care not to loose the Fixing Washer (2) on removal of the Bolt. Note, the UDH Fixing Bolt
(1) is a LH thread, which means to undo the bolt you turn the 8mm Allen Key in a Clockwise direction when looking straight at
the head of the bolt. The UDH (3) can now slide out of the RH Dropout (4) and be removed.

7.1.2: Re-assembly of the SRAM UDH

Reference Fig.18. Re-assembly of the UDH is the reverse of the removal process. Note the correct torque setting in Section 11
NOTE: The SRAM UDH dropout system is designed by SRAM. As such, please refer to SRAM technical
documentation for the full details of how to service and replace the SRAM UDH system.
Description
Sram UDH (Universal Derailleur Hanger) Fixing Bolt
Sram UDH Fixing Washer
Sram UDH Derailleur Hanger
RH Dropout
LH Dropout
Figure 9: Sram UDH Dropout