GM-GMC: rear break adj, wheel cylinder, drum brakes

Question
how do you bleed and adjust rear breaks on a 1992 chevy C2500 pickup?

Answer
Attach a clear hose to the wheel cylinder bleeder valve.

Immerse the opposite end of the hose into a container partially filled with clean brake fluid.

Slowly apply the brake pedal one time and hold.

Loosen the bleeder valve in order to purge the air from the wheel cylinder.

Tighten the bleeder valve to 13 N·m (110 lb in).

Slowly release the brake pedal.
Wait 15 seconds.
R
epeat this sequence, including the 15-second wait, until you purge all the air from the wheel cylinder or caliper.

Repeat steps 6-12 at each wheel until you purge all the air from the brake system.

Check the brake pedal for sponginess.
Check the brake warning lamp for an indication of unbalanced pressure.
Repeat the bleeding procedure in order to correct either of these conditions.



For Lead/trailing drum brakes
Remove the brake drum.
Turn the adjusting screw until the wheel can JUST be turned by hand.
The brake drag should be equal at both wheels.
Back off the adjusting screw 20 notches. Brakes should have no drag after the adjusting screw is backed off about 10 notches. If a heavy drag is still present, you may need to adjust your Park Brake Cable
Adjustment .


Hope this helps