Chevrolet Light Operator's Manual page 52

7. Repeat above operations at each wheel.
Manual Bleeding (Except 1
%: and 2
Ton)
1. Clean all dirt from top of main cylinder and remove filler
plug.
2. Install adapter and automatic filler J
-713.
3.
Follow bleeding operations
as
outlined in Steps
3
th~ough
7 under "Pressure Bleeding."
Pressure Bleeding
(Ph and 2
Ton)
To bleed the hydraulic system on 1
%: and 2 ton trucks a
pressure bleeder tank should be used and in accordance with
the following procedure:
1. Back off adjustment all the way on the upper shoe on both
rear wheels.
2. Remove filler cap from main cylinder and fill the reservoir
to the top of filler plug opening.
3. Connect pressure bleeder to main cylinder and open valve
in the bleeder tank line.
NOTE: The bleeder tank should be pumped up to 20 pounds pres-
sure and kept at approximately this pressure during the bleeding
operation. The enct of the bleeder tube must be in a bleeder jar
or
bottle IUld covered with fluid while performing all bleeding opera-
tions.
4. Connect bleeder tube to hydrovac slave cylinder, open
bleeder valve and bleed until all air bubbles disappear. Close
bleeder valve.
5. Connect bleeder tube to hydrovac valve bleeder valve,
open bleeder valve and bleed until all air bubbles disappear.
Clo~
bleeder valve.
6. Connect bleeder tube
to
the rear, rear wheel cylinder on
.,..