Jeep CJ-3A Owner's Manual page 47

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The master cylinder may be reached by removing the five screws in the inspection cover on the toe board below the steering
column. Keep the master cylinder reservoir full at all times. Use only genuine hydraulic brake fluid. Check the level each 1000
miles (1600 Km.) and use care, when removing the filler cap, that no dirt enters the reservoir. The fluid capacity is
approximately pt. (.325 it
3/4
The hydraulic brake system must be bled whenever a fluid line is disconnected or air enters the system due to low fluid level
in the master cylinder reservoir. A leak in the system will be indicated by a "spongy" pedal. Air trapped in the system is
compressible and does not permit pressure, applied to the brake pedal, to be transmitted solidly to the brake shoes. Should
bleeding be required, consult your Willys-Overland Dealer.
BRAKE SHOE ADJUSTMENT—-MINOR.
When the brake lining becomes worn the effective brake pedal travel is reduced. The effective travel may be restored by
adjusting the brake shoes. First make sure that there is 2" (12.7 mm.) pedal travel, without moving the master cylinder piston,
which is necessary to prevent the brakes from dragging due to expansion of the hydraulic liquid. Jack up the wheels to clear
the floor. Adjusttrent is made by rotating the brake shoe eccentrics Fig. 28. Loosen the lock nut for the forward brake shoe and
hold the nut while turning the eccentric toward the front of the car, with another wrench, until the shoe strikes the drum. Turn
the wheel with one hand and release the eccentric until the wheel turns freely then hold the eccentric and tighten the lock nut.
To adjust the reverse or rear shoe, repeat this operation except turn the eccentric toward the rear of the car. Do this on all
brakes and check the fluid level in the master cylinder reservoir.
As pressure is equal in all parts of system, the brakes are self-equalizing.
FIG. 28—BRAKE ADJUSTMENTS
HAND BRAKE.
To adjust the hand brake the sequence below should be followed:
Make sure that the brake handle on the instrument panel is fully released. Give due attention to the cable and operating linkage
to see that they do not bind. Should cable fail to slide freely in conduit, remove and lubricate it. Rotate the brake drum until
one pair of the three sets of holes are opposite the two adjusting screw wheels in the brake. Use the edge of the holes as a
fulcrum for a suitable adjusting tool or a screw driver, rotate each notched adjusting screw by moving the handle of the tool
away from the center of the drive shaft until the shoes are snug in the drum. Back off seven notches on each adjusting screw
wheel to secure the correct running clearance between the shoes and the drum.
Should either the foot or hand brakes require relining or should it be necessary to make a major adjustment, including resetting
of the anchor pins, contact your Willys-Overland Dealer.
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