servicing showa forks on honda crf

Showa front fork on honda crf(cr) is almous trouble free but require periodic service to replace the fork oil. inspect bushings, seals… Servicing showa front fork (honda crf 450, 250) is really easy task so don’t be afraid and do’it yourself.

1. remove front wheel
2. remove the brake hose clamp
3. remove the handlebar
4. release screws (A, pic1) if u don’t release these screws u won’t be able to loosen the fork damper with 50mm locknut wrench (C) now u just loosen the fork damper (C) now when you loosen damper you can also release bolts (B) and remove fork

5. open the air release screw to release any pressure, turn the compression and rebound counterclockwise to its softest settings
6. now u can completely remove the fork damper with 50mm locknut wrench (A, pic2) then lower the fork tube until the dust seal bottoms against the slider (picture3)
Pic2

pic3

7. pump the fork tube to drain fork oil, if u want just change the fork oil inspect the fork for any damage and refill the right amount of fork oil in fork (A, pic3) se table
8. if u also going to change seals and oil in damper temporary install the fork damper in to the fork tube and tighten hand tight
9. lock the axle holder in a vise fitted with soft jaws, loosen the center bolt (A, pic4) so that is free from the slider, push on the fork cap to extend the center bolt and the piston rod from the axle holder, then install the stopper plate (B, pic4)
pic 4

10. hold the locknut with a wrench (C) and loosen the center bolt (A, pic4)
11. remove the center bolt and the pushrod
12. push on the fork damper and remove the stopper plate.
13. remove the fork damper and fork spring from the slider then remove the slider from the vise (see pic.5)
pic 5

14.to separate the fork tube from the slider hold the tube and pull hard on the slider using quick in and out strokes don’t forget remove dust seal and stop ring (pic.6)
pic 6

14. remove the fork cap from the fork damper (pic. 7)
pic 7

15. drain out the oil from damper inspect all the parts for any damage and refill the new oil in the damper as follows:
- support the fork damper so it is vertical and fully extended
- pour the recommended quantity of fork oil (5W fork oil)into the fork damper see table
- slowly pump the piston rod several time by hand to bled air from damper on the last stroke fully extend the piston rod check an set oil level as you seen on the picture bellow

16. when you inspect all the parts just install al the parts together in reverse order don’t forget fill oil in fork see table for quantity of oil in fork (A, pic.3)
thats it i hope u understand all steps in case of problem write a coment!

Add comment December 18th, 2007