K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
1. Fill the pressure tank at least 1/3 full of brake fluid. The bleeder must be re-bled each time fluid is added.
a. Charge the bleeder to 140 - 170 kPa (20 to 25 psi).
2. Use J-35856 to depress and hold the valve stem on the combination valve during the bleeding operation.
a. Install the bleeder adapter so the leg with the release valve is towards the cowl.
3. Bleed each wheel in the following sequence.
a. Right rear
b. Left rear
c. Right front
d. Left front
4. Connect the hose from the bleeder to the adapter at the master cylinder.
a. Open the tank valve.
5. Attach a hose to a brake bleeder screw.
a. Immerse the opposite end of the hose into a container partially filled with clean brake fluid.
6. Open the bleeder screw at least 3/4 of a turn and allow the fluid to flow until no air is seen in the fluid.
a. Close the bleeder screw.
7. Repeat step six at all the wheels.
8. Open the bleeder screw on the Isolation/Dump Valve (vehicles with power brakes only).
a. Allow the fluid to flow until no air is seen in the fluid.
b. Close the bleeder screw.
9. Check the brake pedal for "sponginess", repeat the entire bleeding procedure if this condition is found.
10. Remove J-35856.
a. Disconnect the line from the bleeder adapter.
b. Remove bleeder adapter.
11. Fill the master cylinder to the proper level with brake fluid.
Without ABS System
Manual Bleeding
1.
If vehicle is equipped with power brakes, remove vacuum reserve by applying brakes several times with engine off.
2.
Fill master cylinder reservoirs with suitable brake fluid. Be sure to always keep master cylinder reservoirs at least half full during entire
bleeding procedure.
3.
If master cylinder is suspected to have air in the bore, it must be bled first, as follows:
a.
Disconnect forward brake pipe connection at master cylinder.
b.
Allow brake fluid to fill master cylinder bore until it begins to flow from forward pipe connector port.
c.
Connect and tighten forward brake pipe at master cylinder.
d.
Depress brake pedal slowly one time and hold, then loosen forward brake pipe connection at master cylinder to purge air from bore. Tighten
