Jeep J-10 Series 1982 Technical & Service Manual page 827

Inspect the adjusting screw pivot and screw threads.
The screw must rotate freely. Inspect the screw serra
tions for excessive wear which could effect automatic
adjustment.
Inspect the parking brake cables for being frayed,
worn, kinked, or seized. Also check for missing or loose
cable end retainer buttons. Inspect the parking brake
lever for distortion, worn pivot pin, and for proper cable
retention.
Inspect the wheel cylinders for evidence of leakage.
Pull back the dust boots and check for signs of leakage
past the piston cups. If necessary, overhaul the cylinder
as described in this chapter. Inspect the bleeder screw
and hydraulic line connection for evidence of leakage or
damaged threads. Replace the wheel cylinder if the in
ternal threads are damaged. Check the brake lines for
swelling, distortion, kmks, or cracks. Replace any line
exhibiting these conditions.
Clean the support plates using shop cloths or com
pressed air. Polish the anchor pins with crocus cloth and
polish the support plate ledges with emery cloth. If the
ledges have deep grooves or ridges which might restrict
shoe movement, the support plate should be replaced.
Do not attempt to reduce deep ridges or grooves by
grinding. This can result in improper shoe-to-drum con
tact. Inspect the support plates for distortion or cracks
and check the support plate-to-axle flange bolt torques.
Inspect the anchor pins for wear or for being loose.
Replace the support plate if it exhibits any of the condi
tions described previously.
Clean the brakedrums using a soap and water solution
only.
CAUTION: Do not use brake fluid, gasoline, kerosene,
or similar solvents to clean the drums. Use a soap and
water solution mdy to clean the drums.
Inspect the drums for scoring, cracks, heat checking,
hard spots, and distortion and check the drums for ex
cessive runout. Mount the drums on a brake lathe and
check runout using a dial indicator. Drum runout must
not exceed 0.005 inch (0.12 mm). If drum runout is exces
sive, replace or remachine the drum.
CAl)TION: When machining drums, do not remove
more than 0.080 inch (0.76 mm). Maximum allowable
oversize for any drum is 0.060 inch (1.52 mm) over origi
nal diameter. In addition, do not attempt to machine
drums with hard spots. Replace drums with this
condition.
Assembly and Adjustment
NOTE: When it is necessary to replace the brakelining
on one wheel, the lining must also be replaced on the
opposite wheel to maintain braking balance.
(1) Apply thin film of molydisulphide grease, or
chassis lubricant to support plate ledges, anchor pin,
adjusting screw threads and pivot, adjuster lever-to-
BRAKES 26-35
secondary brakeshoe contact surface, parking brake le
ver pivot and portion of lever that contacts secondary
brakeshoe.
(2) Connect parking brake cable to parking brake
lever on secondary brakeshoe.
NOTE: When installing the parking brake lever on re
placement brakeshoes, pinch the U-clip to retain the
lever on the shoe.
(3) Install secondary brakeshoe, automatic adjuster
lever, and lever pivot as assembly and install brakeshoe
holddown spring.
(4) Install actuating lever and adjusting lever. In
stall return spring on actuating lever tang. Large end of
tapered spring should rest on brakeshoe.
(5) Install primary shoe and holddown spring.
(6) Install guide plate on anchor pin.
(7) Install parking brake strut and spring on
brakeshoes.
(8) Install adjusting screw and spring. Short hooked
end of spring goes on primary brakeshoe. Long hooked
end goes on secondary brakeshoe (fig. 2G-26).
(9) Install return springs and adjuster spring in
following sequence (fig. 2G-26):
(a) install adjuster spring.
(b) install secondary brakeshoe return spring
on brakeshoe and adjuster spring.
(c) install primary shoe return spring.
CAUTION: Be sure the brakeshoes are seated against
the anchor pin after installing the springs.
(10) Perform initial brake adjustment. Refer to Ser
vice Brake Adjustment.
(11) Install brakedrums.
(12) If brake lines were disconnected, bleed brakes.
Refer to Brake Bleeding.
(13) Install wheels and tires.
(14) Lower vehicle.
(15) Test brake operation before moving vehicle.
(16) Perform final brake adjustment by making 10 to
15 forward and reverse stops to equalize adjustment and
until satisfactory brake pedal height is obtained.
NOTE: If the vehicle has an automatic transmission,
do not use the forward range to halt reverse movement
of the vehicle. Thui procedure will prevent the automatic
adjusters from operating properly resulting in unsatis
factory pedal heights. All stops must be completed.
BRAKEDRUM SERVICE
Inspection and Measurement
(1) Raise and support vehicle.
(2) Remove wheels.
(3) Remove brakedrums.