BODY/STEERING/SUSPENSION
5.13
MID AXLE A- ARM REPLACEMENT (6X6)
1. Elevate and safely support the center of the vehicle with weight removed from center wheel(s).
2. Remove the bolts that secure the shock to the upper and lower mid A--arms.
3. Loosen two bolts on A-arm bushing by alternating each about 1/3 of the way until A-arm can be removed.
Perform this procedure on the upper and lower mid A--arms.
4. Examine the A-arm bushing and A--arm shaft. Replace if worn. Discard hardware.
5. Insert A--arm bushings and A-arm shaft into new A-arm.
6. Install new lower mid A-arm assembly onto vehicle frame. Torque new bolts to 30 ft. lbs. (41.4 Nm).
7. Install a new upper mid A--arm assembly. Torque new bolts to 30 ft. lbs. (41.4 Nm).
W ARNING
The locking features on the existing bolts were destroyed
during removal. D O N OT reus e old bolts. Serious injury
or death could result if fasteners come loose during
operation.
8. Attach A-arm to wheel bearing carrier. Torque bolts to
to 25 ft. lbs. (35 Nm). Install the shock to the upper mid
A--arm. Torque bolts to to 25 ft. lbs. (35 Nm).
9. Locate grease fitting in center of A-arm tube and pump
A-arm full of grease.
W ARNING
Upon A-arm installation completion, test vehicle at low speeds before putting into regular service.
Frame
Mid Axle
A--Arm Assy.
Screw
Shaft
Bushing
Nut
Bushing
Upper Mid
Lower Mid A--Arm
Screw
W asher
Bushings
Shaft
Bushings
Wheel Bearing
Shock
A-- Arm
30 Ft. lbs.
(41 Nm)
30 Ft. lbs.
(41 Nm)
Carrier
25 Ft. lbs.
(35 Nm)
25 Ft. lbs.
(35 Nm)
A-arm Attaching Bolt Torque:
30 ft. lbs. (41 Nm)
Wheel Bearing Carrier Bolt Torque:
25 ft. lbs. (35 Nm)
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