Brad
Rotorhead
Posts: 1672
|
posted June 16, 2008 05:13 PM |
|
brake bleeding trouble
Okay, had to remove the brake master and booster in order to pull the steering box out to get rebuilt. It's all back together but the brake pedal goes almost all the way to the floor and pumping it only makes the pedal a little harder. Back out of garage, brakes only slightly work the first half of pedal travel. After that they seem to kick on some more. Can't drive it.
Bled all 6 bleeders a kazillion times, no help. Mity-Vac sucks air only from driver side upper cylinder and passenger lower cylinder. No fluid comes from those. Driver side lower finally pulled some fluid. Passenger upper is great - fluid with few bubbles. Both calipers seem to pull fluid and few bubbles.
So I removed the brake master to bench bleed it and when pushing the primary piston in with a screwdriver, the rear port shoots tons of fluid out but the secondary piston (front) shoots none until the primary makes contact with the secondary then it sprays a little fluid out the front but not much. When I remove the screwdriver I can hear the front port sucking air in.
Took the brake master apart, cleaned and found some big black particles behind the check valve in the front port. Put it all back together, bench bled and it still acts the same.
Gonna order a new brake master but does the bench bleeding of the brake master sound right? Is that how it's supposed to work?
____________
-brad-
74 REPU Lawn Green
81 Rx-7 racecar. 12a J-
Bridge
|
|
