Cutlass L4-138 2.3L VIN A FI HP (1990)
mallet.
11.
Close valve when fluid begins to run with no bubbles. Repeat steps 9-11 for each wheel, following wheel sequence in step 8.
12.
Lower vehicle, then attach bleeder hose to bleeder valve on inboard side of Powermaster III unit and submerge opposite end of hose in a clean
container partially filled with brake fluid.
13.
Slowly open bleeder valve and allow fluid to flow for 20-30 seconds.
14.
Close valve when fluid begins to run with no bubbles.
15.
Repeat steps 13-15 for outboard side bleeder valve.
16.
Remove bleeder adapter tool No. J-37115 or equivalent from Powermaster III unit, then check fluid level in both reservoirs. Fill if necessary.
17.
Snap reservoir cover into place, then apply moderate to heavy force to the brake pedal.
18.
With the pedal applied, turn ignition switch to the On position for 5 seconds, then turn ignition switch to the Off position. Do this 10 times in
succession to cycle solenoids. Do not start engine, or place ignition switch in the Start position.
19.
Depressurize Powermaster III unit, then wait two minutes for air to clear from reservoir.
20.
Attach bleeder hose to bleeder valve on inboard side of Powermaster III unit and submerge opposite end in a clean container partially filled with
brake fluid.
21.
With the ignition switch in the On position, apply light force to the brake pedal, then slowly open bleeder valve and allow fluid to flow until no air
is seen.
22.
Close valve when no air is seen in fluid.
23.
Repeat steps 21-23, on outboard side bleeder valve.
24.
Turn ignition switch to the Off position, then depressurize Powermaster III unit.
25.
Remove reservoir cover and diaphragm assembly, then check fluid level in reservoirs. Use clean DOT 3 fluid to fill if necessary.
26.
Snap reservoir cover onto reservoir, then turn ignition switch to the On position. Allow pump to run.
27.
Turn ignition switch to the Off position if pump runs longer than 60 seconds, inspect pump for malfunction.
28.
Apply brake pedal and note travel and feel. If pedal feels firm and smooth, without excessive travel, system is properly bled.
29.
If pedal feels soft, spongy, or has excessive travel, refer to EXCESSIVE PEDAL TRAVEL.
30.
If a bump is noted upon initial pedal apply, or pedal apply does not feel smooth and uniform, refer to NON-UNIFORM PEDAL APPLY.
31.
Road test vehicle. If any of the above symptoms appear, refer to appropriate procedure.
Without ABS System
Manual Bleeding
Pressure bleeding is recommended for all hydraulic systems. However, if a pressure bleeder is unavailable, use the following procedure. Brake fluid
damages painted surfaces. Immediately clean any spilled fluid.
1.
Remove vacuum reserve by pumping brakes several times with engine off.
2.
Fill master cylinder reservoir with clean brake fluid. Check fluid level often during bleeding procedure; do not let reservoir fall below half full.
3.
If necessary, bleed master cylinder as follows:
a. Disconnect master cylinder forward brake line connection until fluid flows from reservoir. Reconnect and tighten brake line.
b. Instruct an assistant to slowly depress brake pedal one time and hold.
c. Crack open front brake line connection again, purging air from cylinder.
d. Retighten connection and slowly release brake pedal.
e. Wait 15 seconds, then repeat until all air is purged.
f.
Bleed the rearward (nearest the cowl) brake line connection by repeating steps a through e.
4.
Loosen, then slightly retighten bleeder valves at all four wheels. Repair any broken, stripped or frozen valves at this time.
5.
Proceed to appropriate wheel first and follow set sequence according to Wheel Bleeding Sequence.
