Chevrolet 30 Series 1967 Service Manual page 223

with fluid while bleeding to insure a sufficient
amount of fluid is in the main cylinder at all
Fig . 14—Bleeding W heel C ylin d e r
Fig. 13—Correct M a in C y lin d e r Fluid Level
5. Open wheel cylinder bleeder valve by turning Tool
. Remove brake bleeder wrench and bleeder tube from
6
7. Repeat Steps 2 through 7 on the remaining wheel
. Fill the main cylinder to the levels shown in Figure
8
9. Install main cylinder diaphragm and cover.
Pressure Bleeding—Single System
(Single Reservoir Main Cylinder)
1. Make sure fluid level of pressure bleeding unit is up
2. Clean all foreign matter from main cylinder reser­
3. Replace cover with Tool J - 8554 and attach pressure
4. With pressure on brake system, position bleeding
5. Place other end of tube in transparent container
times. To insure that outside air is not sucked
back into the hydraulic system, the bleeder valve
should be closed before the brake pedal reaches
the floor.
J-7647 counterclockwise approximately 1/3 of a turn.
Slowly depress brake pedal. Just before brake pedal
reaches the end of its travel, close bleeder valve and
allow brake pedal to return slowly to the fully re ­
leased position. Repeat this procedure until expelled
brake fluid flows in a solid stream from the bleeder
hose and no bubbles are present, then close bleeder
valve tightly.
wheel cylinder bleeder valve.
cylinders in the correct bleeding sequence.
13.
to operating level. Unit must be capable of producing
25-30 psi.
voir area and remove reservoir cover.
bleeding unit.
tube J-0628 over end bleeding valve (fig. 14).
holding sufficient fluid to cover end of tube.
BRAKES 5-7
CHEVROLET TRUCK SERVICE M ANUAL