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Transfer Case Output Flange Runout
Measurement
Special tool
J 7872 Magnetic Base Dial Indicator Set, or
equivalent
NOTE
This measurement procedure is intended to
measure transmission or transfer case
output flange runout for systems with a
constant velocity (CV) joint, rubber coupling
or bolt-on U-joint yoke at the transmission or
transfer case.
1. Place the transmission in NEUTRAL.
2. Raise and support the vehicle. Refer to "Lifting and
Jacking the Vehicle: ".
3. If equipped with a CV joint, measure the
transmission or transfer case output flange radial
runout on the machined surface of the prop shaft
front CV joint housing, as close to the flange as
possible:
a. Clean the surface of the prop shaft front CV joint
housing just rear of the transmission or transfer
case output flange.
b. Mount a dial indicator set, J 7872, or equivalent,
and position the dial indicator to contact the prop
shaft front CV joint housing as close to the
transfer case output flange as possible.
4. If equipped with a rubber coupling or bolt-on U-joint
yoke, measure the transfer case output flange radial
runout on the machined surface of the flange pilot
area:
a. Mark the position of the prop shaft to the
transmission or transfer case output flange.
b. Separate the propshaft from the transmission or
transfer case output flange.
c. Clean the surface of the flange pilot area.
d. Mount a dial indicator set, J 7872, or equivalent,
and position the dial indicator to contact the pilot
area as close to the end of the pilot as possible.
5. Rotate the transmission or transfer case output
flange by hand to locate the low spot.
6. Set the dial indicator to zero on the low spot.
7. Rotate the flange or shaft by hand and record the
amount of radial runout.
8. Compare the runout of the flange or shaft to the
runout tolerance specifications guideline.
9. If the transmission or transfer case output flange
runout exceeds the specification, the flange or shaft
requires replacement.
Propeller Shaft Runout Measurement
Special tool
J 7872 Magnetic Base Dial Indicator Set, or
equivalent
J 8001 Dial Indicator Set, or equivalent
NOTE
• This measurement procedure is intended
to measure propeller shaft runout for prop
shaft systems with 2 or 3 U-joints only.
This is not for prop systems with only 1 U-
joint, or with only constant velocity (CV)
joints, and/or coupler assemblies.
• When measuring runout of propeller
shafts, do not include fluctuations on the
dial indicator due to welds or surface
irregularities.
• Always inspect the runout of any
replacement propeller shaft.
1. Raise and support the vehicle. On vehicles with solid
axles, ensure that the drive axle is supported at ride
height - vehicle body supported by suspension
components. Ensure the wheels are free to rotate.
Refer to "Lifting and Jacking the Vehicle: ".
2. Place the transmission in NEUTRAL.
3. Clean the circumference of the propeller shaft or
shafts of any debris and/or undercoating along the
front (1), center (2), and rear (3) positions.
4. Inspect the propeller shaft or shafts for dents,
damage, and/or missing weights. Any propeller shaft
that is dented or damaged requires replacement.
Propeller Shafts:
3D-10
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Troubleshooting
