Ride Height & Universal Joint Angle
- Ensure vehicle is at proper ride height with a full tank of gasoline. Measure axle tube-to-frame height (ride height) from top of axle tube to bottom of frame. See Fig 1
. Bounce vehicle and allow to return to normal ride height before measuring. Ensure ride height is 4.3-4.5" (109-114 mm) between top of drive axle tube and body. See Fig 1
.
- With vehicle level, measure universal joint angles. Bearing cap must be vertically aligned (straight up and down). Clean bearing caps. Install Inclinometer (J-23498-A
) on rear drive shaft bearing cap. See Fig 2
. Center bubble in sight glass, and record reading.
- Remove inclinometer, rotate drive shaft 90 degrees, and install inclinometer on drive yoke bearing cap. Measure angle, and subtract smaller reading from larger reading to determine rear universal joint angle.
- Attach Inclinometer Adapter (J-23498-20
) to front drive shaft bearing cap. See Fig 3
. Attach inclinometer to adapter, and repeat procedure used for rear universal joint to obtain front universal joint angle.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.
Courtesy of GENERAL MOTORS CORP.