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BRAKES 5-5
LEVEL CYLINDER
TILTED CYLINDER
Fig. 8—Correct Main Cylinder Fluid Level
expelled brake fluid flows in a solid stream from the
bleeder hose and no bubbles are present, then close
bleeder valve tightly.
6. Remove brake bleeder wrench and bleeder hose from
wheel cylinder bleeder valve.
7. Repeat Steps 2 through 7 on the remaining wheel
cylinders in the correct bleeding sequence (fig. 5).
8. Fill
the main cylinder to the levels shown in
Figure 8.
9. Install main cylinder diaphragm and cover.
PUSH ROD TO MAIN CYLINDER CLEARANCE
The brake pedal has a definite stop which is permanent
and not adjustable.
This stop consists of a rubber
bumper at the release end of pedal travel. Before
adjusting push rod to main cylinder clearance, make
sure pedal returns to the fully released position freely
and that the pedal retracting spring has hot lost its
tension, then proceed as follows:
1. Loosen check nut on push rod.
2. Turn push rod as required to provide correct ad-
justment. Movement of pedal pad before push rod
contacts main cylinder pistons must be 1/16" to
1/4" (fig. 9).
3. Tighten check nut against clevis, and recheck
movement.
HYDRAULIC BRAKE LINES
Hydraulic Brake Hose
The flexible hoses which carry the hydraulic pressure
from the steel lines to the wheel cylinders are carefully
designed and constructed to withstand all conditions of
stress and twist which they encounter during normal
vehicle usage.
The hoses require no service other than periodic
inspection for damage from road hazards or other like
sources. Should damage occur and replacement become
necessary, the following procedure is to be followed.
Removal
1. Separate hose from steel line by turning double
flare connector out of hose fitting.
2. Remove "U" shaped retainer from hose fitting and
withdraw hose from support bracket.
3. Turn hose fitting out of wheel cylinder inlet.
Replacement
1. Install new copper gasket on cylinder end of hose
(male end).
2. Moisten threads with brake fluid and install hose in
wheel cylinder inlet.
3. With weight of car on wheels and suspension in
normal position (front wheels straight ahead) pass
female end of hose through support bracket, allowing
hose to seek its own position. Insert hex of hose
fitting into the 12 point hole in support bracket
in position which induces least twist to hose (figk 10).
NOTE: Do not twist hose unduly during
^
operation as its natural curvature is absolutely
necessary
to
maintain
proper
hose-tot
suspension clearance through full movement o£
the suspension and steering parts.
4. Install "U" shaped retainer to secure hose in sup-
port bracket.
5. Inspect by removing weight completely from wheel,
turn wheels from lock to lock while observing hose
position. Be sure that hose does not tough other
parts at any time during suspension or wheel travel.
If contact does occur, remove hose retainer and
rotate the female hose end in the support bracket
CHEVROLET CHASSIS SERVICE MANUAL
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