Difference between revisions of "Front Brake Lever Replacement"

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(extracted from manual)
(No difference)

Revision as of 07:51, 16 July 2018

This replaces the Brake Lever.

Notes
Made using MY2016 DSR, applies to 2014+ models with JJuan front brake systems.
Broken brake lever from 2016 DSR
JJUAN FRONT BRAKE LEVER SDS 25-0803201
Parts
  • JJUAN FRONT BRAKE LEVER SDS 25-0803201 $76 USD
  • JJUAN FRONT BRAKE LEVER SDS 25-08032 (alternate) $76 USD
Tools
5mm Allen key and 10mm socket
  • 5mm Allen key (above)
  • 10mm hex socket (below)
Removal
  1. Remove bottom 10mm lock nut.
    FBLMY2016REPAIR04.jpg
  2. Loosen top 5mm hex bolt.
    FBLMY2016REPAIR05.jpg
  3. Remove top 5mm hex bolt.
    FBLMY2016REPAIR06.jpg
  4. Slide out brake lever assembly.
    FBLMY2016REPAIR07.jpg
  5. Inspect brake lever mount for damage
    FBLMY2016REPAIR08.jpg
Replacement
  1. Remove bottom 10mm lock nut from 5mm hex bolt and set both pieces aside.
    FBLMY2016REPAIR09.jpg
    FBLMY2016REPAIR10.jpg
  2. Slide in brake lever assembly, taking care to align the rubber boot / plunger (what's the technical term?) and the bolt hole.
    FBLMY2016REPAIR11.jpg
    FBLMY2016REPAIR12.jpg
  3. Insert 5mm hex bolt from top to bottom and hand-tighten with 5mm hex bit on top until snug.
    • Do not over-torque.
    • Hold the 5mm hex bit in place for the next step.
  4. Fasten threads with 10mm lock nut and hand-tighten until snug.
    • Do not over-torque.
  5. Adjust a set screw on the inside of the lever, if necessary.
Left-over parts
  • The old brake lever assembly.
Newer brake lever model
Brake lever tagged.jpg
Newer replacement parts seem to contain an extra screw (G) used to fit the length of the piston (E) into the cylinder.
With this replacement part, assemble by:
  1. Put part D into the lower hole of the lever (A).
  2. Screw the piston (E) into the visible hole of part D.
  3. Put the rubber boot (F) onto the piston (E), so that it looks like in the assembled version shown before.
  4. Screw the small screw (G) from the side into part D to fix the piston (E).
    Keep it loose, though, so that you can still screw out or in the piston (E).
  5. Slide the lever into the bracket as shown before.
    Insert the hex bolt, but do not tighten it.
  6. Check the function of the brake, especially any slack it shows.
  7. In case you have slack, take out the hex bolt, slide the lever out again and adjust the length of the piston by slightly screwing it out.
  8. Reassemble into the bracket and recheck the function of the brake.
    If you are happy with it, then tighten the small screw (G) to fix the length of the piston.