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NOTE: The bleeder tank should be charged with 25-35 pounds
air pressure and must be kept within this range during the
bleeding operation. The end of the bleeder tube must be in a
bleeder jar or bottle and covered with fluid while performing all
bleeding operations.
4. Connect bleeder tube to hydrovac bleeder valve No.1,
Figure 59, open bleeder valve and bleed until all air bubbles
disappear (approximately lh pint of fluid). Close bleeder valve.
5. Connect bleeder tube to hydrovac bleeder valve No.2,
Figure 59, open bleeder valve and bleed until all air bubbles
disappear. Close bleeder valve.
6. Connect bleeder tube to front, rear wheel cylinder on
left side, open bleeder valve and bleed until all air bubbles
disappear (approximately lh pint of fluid). Close bleeder valve.
7. Connect bleeder tube to front, rear wheel cylinder on
right side, open bleeder valve and bleed until all air bubbles
disappear. Close bleeder valve.
8. Connect bleeder tube to left front wheel cylinder, open
bleeder valve and bleed until all air bubbles disappear. Close
bleeder valve.
9. Connect bleeder tube to right front wheel cylinder, open
bleeder valve and bleed until all air bubbles disappear. Close
bleeder valve.
10. Adjust upper shoe on each rear wheel with pressure
tank still connected. Push down hard on the brake pedal sev-
eral times to centralize the shoes.
11. Disconnect pressure tank and readjust all brake shoes.
12. Apply approximately 75 lbs. pressure on the brake pedal
and check the pedal clearance from the metal toe board to the
forward edge of the pedal pad. This clearance should
.
be a
minimum of 5 inches. If reserve is less than 5 inches, re-bleed
hydrovac and rear brakes in the sequence outlined above.
Manual Bleeding
1. Clean all dirt from top of main cylinder and remove
filler plug.
2. Install adapter and automatic filler J -713.
3. On all models except 1¥2, 2 and 2lh ton, remove bleeder
valve screw and screw bleeder tube into bleeder valve. On
llh, 2 and 2lh ton models, connect bleeder tube to hydrovac
bleeder valve No.1, Figure 59. Place end of tube in a con-
tainer having sufficient fluid to cover end of tube.
4. Open bleeder valve approximately
%
of a turn, depress
• 53 •
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