Electra V6-181 3.0L (1985)
Brake Fluid Pump: Technical Service Bulletins
Brakes - Bleeding/Repriming Powermaster Pump
Bulletin:
86-5-4
Date:
Dec., '85
Ref. No.: 86-028-5
SUBJECT:
REPRIMING POWERMASTER PUMP
MODELS AFFECTED: 1985 AND 1986 MODELS EQUIPPED WITH POWERMASTER BRAKE ASSEMBLY
A problem may be encountered in bleeding the Powermaster if for any reason the pump has not been properly filled with brake fluid. If after any service
or new installation the pump does not circulate fluid after the motor has run for 20 seconds, it may be necessary to reprime the pump. In order to reprime
the system, the following steps should be followed..
POWERMASTER PUMP
1.
Turn off the ignition.
2.
Apply the brake pedal with medium pressure 10-15 times with ignition off to discharge pressure from the accumulator.
3.
Clean and remove reservoir cover.
4.
Disconnect the booster tube and nut assembly from the casting boss at pump outlet. Refer to illustration.
5.
Wait for brake fluid to gravity bleed from the disconnected end of the tubing.
6.
When brake fluid begins to flow, reconnect the tube and torque to 17 N-m (13 ft.lbs.).
7.
Check the fluid level in the reservoir and add new brake fluid if needed. Reinstall the reservoir cover.
8.
Turn on the ignition. The pump should properly circulate the fluid to the accumulator. The fluid level on the inboard side of the reservoir should
diminish if the pump is working properly.
9.
Continue with service manual bleed and fill procedure.
