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1949 Delco Brakes Service Manual (Courtesy of Pat Gizz) |
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DELCO BRAKE SERVICE MANUAL |
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1. Jack up all wheels in safe manner. Inspect
and adjust the brake pedal
clearance so that there will
be approximately 1/2" between the pedal arm and the underside face of the toe board
or pedal stop. (See "Brake
Pedal Adjustment," Page
18.)
2. Add sufficient brake fluid to the master
cylinder reservoir to bring the fluid level up to approximately 1/2" below the top of
the filler plug opening. (See
Figure 2.)
3. Check brake system for leaks. (See "Test for
Brake System Leaks," Page
10.)
4. Disconnect parking brake cable at front
end.
PERFORM OPERATIONS 5, 6, and
7; or 5 and 8, AT ALL FOUR WHEELS.
5. Be sure the anchor pin lock nut is tight,
for if the anchor pin nut is
found loose it will be necessary to proceed in accordance with
instructions for "Major
Brake Adjustment."
ADJUSTING SHOES ON MODELS
USING ECCENTRIC
6. On all models 1936-38 and on Pontiac
1942-48, |
loosen the eccentric lock nut
1/2 turn and, using standard tool, turn the eccentric in direction
the wheel revolves for forward motion until the brake has considerable
drag. Then turn the eccentric in the opposite direction very slowly until the brake is just free of drag, or
check the clearance with a .010" feeler gauge. Hold eccentric and
tighten the eccentric lock nut. (See Figure 17.)
7. Expand the adjusting screw
through the hole in the backing plate, using an offset screw driver, until the brake drags slightly.
Then back off the adjusting screw approximately 10-14 notches until
the wheel turns freely. (See Figure 18.) NOTE: If it requires more than
fifty notches on adjusting screw to cause a drag on the drum, or if the
mileage indicates that the lining may be worn to the rivets, then wheels
and drums should be removed and lining inspected as outlined in
"Brake Reconditioning," Page 16.) |
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Fig. 16—Use of Feeler Gauge |
Fig. 17—Use of Eccentric Adjusting
Tool |
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13 |
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