Maintenance & Technical > KX500 Original
no brake pressure
KX925:
well i took the caliper and blew some air into it the pistons opened and closed so i put it back on the bike and same thing....nothing, so i'll take apart the master cylinder and see what happens....this is very frustrating.
cbxracer30:
You need to check into a Mityvac brake bleeder or a similar product that push fluid back up through the system , they work great and save alot of headaches. Most auto parts stores have something similar , it attaches to the bleeder at the caliper and pumps fluid and air back up the lines. CBX
DoldGuy:
KX925,
It sounds like you need to bleed the Master Cylinder first. Remove the brake line at the M/C (keep the line up to keep most of the fluid in) & with Many rags around remove the M/C cap, next cover the hole where the banjo bolt goes with your finger & pump the lever a couple of times & hold in, remove your finger, continue to pull on the lever, hold lever & cover again with finger. After 5-6 times you will start to have "Feel" at the lever, re attach brake line & bleed ((I like using the Mity Vac).
Hope this helps & keep us posted!
DoldGuy
Hillclimb#42:
The mighty vac is great. Everyone should own one.
Roostmad1:
--- Quote from: KX925 on May 10, 2010, 11:33:02 AM --- :? Okay i'm hoping someone can help me,I have a 1991 KX500 and i took it apart for the winter, i took the brake lines off and hung them up, now when i put them back on, i'm getting pressure in the rear but no pressure at all in the front, they worked fine when i took it apart, i've bled them about a million times even tried zip tying the lever overnight, nothing, i'm getting fluid to the caliper because when i open the bleed nut fluid comes out but the front brake will not build pressure, is it something easy i'm missing this is very frustrating. would it be the front caliper? the master cylinder? can someone PLEASE help me i'm begging you, it's nice enough to go riding and my poor beast is sitting in the garage, thank you in advance.
--- End quote ---
ive had the same problem with bleeding the KX and kdx front brake,what we ended up doing was losen of the front brake line where it bolts to the master cylinder and held a rag around it and bleed it from there first then tightened it back up and then the front brake bleed up no problem down as normal at the caliper,worked for us goodluck
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