Wheel Balancing; Wheel Bearing Adjustment - Jeep 1979 CJ-5 Technical & Service Manual

2H-6 WHEELS AND TIRES
W H E E L 1ALANCINI
Wheel balancing may be performed using on or off-
vehicle equipment. However, when using on-vehicle bal-
ancing equipment, observe the following precautions:
• On vehicles with a Trac-Lok rear axle, do not use on-
vehicle equipment to balance the rear wheels. In-
stead, remove the wheels and balance them off the
vehicle using a two-plane, dynamic balancer.
• Before balancing wheels on a vehicle equipped with
a Model 20 transfer case, shift the transmission and
transfer case into neutral.
• Before balancing wheels on a vehicle equipped with
a Quadra-Trac transfer case, disconnect the front or
rear propeller shafts as required.
Because of their unique construction, radial tires are
sometimes less responsive to certain balancing tech-
niques. In some cases, dynamic two-plane, off-vehicle
type balancing equipment will provide the most satis-
factory results with radial tires.
When balancing aluminum or chrome plated wheels,
take care to avoid damaging the wheel surface when
installing balance weights. Use self-adhering type
weights on aluminum wheels only and install them on
the back side of the wheel whenever possible.
W H E E L BEARING ADJUSTIENT
Wheel bearing adjustment is very important because
it establishes the operating clearance of the wheel bear-
ings. A tight adjustment preloads the bearings exces-
sively causing them to overheat. A loose adjustment
allows the hub to shift position as bearing load varies
during acceleration, braking, and cornering. A loose
bearing adjustment can produce shimmy, vibration, and
low brake pedal heights as a result of disc brakeshoe
knock back caused by rotor wobble.
Front Wheel Bearing Adjysfment—CJ Models
(1) Raise vehicle.
(2) Remove wheel cover, if equipped, and remove
hubcap.
(3) Remove drive flange snap ring.
(4) Remove drive flange attaching bolts and remove
flange and gasket (fig. 2H-8).
(5) Straighten lip of outer locknut tabbed washer
and remove locknut and washer.
(6) Loosen, then tighten inner locknut to 50 foot-
pounds (68 N*m) torque using tool J-25103. Rotate wheel
while tightening nut to seat bearing properly.
(7) Back off inner locknut 1/3 turn while rotating
wheel. Wheel must rotate freely and not display any
lateral movement.
(8) Install outer locknut tabbed washer and locknut.
(9) Tighten outer locknut to 50 foot-pounds (68
N*m) torque using tool J-25103 and bend lip of tabbed
washer over locknut.
(10) Recheck bearing adjustment. Wheel must rotate
freely and not display any lateral movement.
(11) Install drive flange gasket and drive flange.
(12) Coat drive flange attaching bolts with Lock-tite
271 or equivalent. Install bolts and tighten to 24 foot-
pounds (33 N*m) torque.
(13) Install hub cap.
(14) Lower vehicle.
Front Wheel Bearing Adjustment—Cherokee-Wagoneer-
Truck
(1) Raise vehicle.
(2) Remove wheel cover (if equipped) and hubcap.
(3) Remove drive gear snap ring (fig. 2H-9).
(4) Remove drive gear, pressure spring, and spring
cup (fig. 2H-9).
Fig. 2H-8 Rotor and Wheel Bearings—CJ Models