Envoy 2WD V6-4.3L VIN W (1998)
Ball Joint: Specifications
Upper
Fastener Tightening Specifications
Ball Joint Nut :
Upper ..................................................................................................................................................................................................... 83 Nm (61 ft. lbs.)
Upper Replacement Joint ........................................................................................................................................................................... 23 Nm (17 ft. lbs.)
Wear Limit
^
Tools Required:
-
J 8001 Dial indicator
Important:
^
The vehicle must rest on a level surface.
^
The vehicle must be stable. Do not rock the vehicle on the floor stands.
^
The upper control arm bumper must not contact the frame.
1. Raise the vehicle. Support the vehicle with safety stands. Support the lower control arm with a floor stand or jack, as far outboard as possible,
under the stabilizer bar bracket.
Important: If a seal is cut or torn, replace the ball joint.
2. Wipe the ball joints clean. Check the seals for cuts or tears.
3. Adjust the wheel bearings, RWD only.
4. Check the ball joints for horizontal looseness.
4.1. Position the dial indicator against the lowest outboard point on the wheel rim.
4.2. Rock the wheel in and out while reading the dial indicator. This shows horizontal looseness in both joints.
4.3. The indicator reading should be no more than 3.18 mm (0.125 in). If the reading is too high, check the lower ball joints for vertical looseness.
5. For RWD vehicles, check the lower bail joints for wear and for vertical looseness using:the following procedure:
5.1. Inspect by sight the lower ball joint for wear. The position of the housing into which the grease fitting is threaded indicates wear. This round
housing projects 1.27 mm (0.050 in) beyond the surface of the ball joint cover on a new ball joint. Under normal wear, the surface of the ball
joint housing retreats inward very slowly.
