GMC 1986 P-Truck Service Manual page 400

; Im portant
• Scribe a line on the pinion stem, pinion nut and
the companion flange and record the number of
exposed threads on the pinion stem. Use the
scribed reference and the exposed threads as a
reinstallation guide (figure 17).
2. Nut using J-8614-01.
• Position J-8614-01 on the flange so that the
four notches on the tool face the flange
(figure 18).
3. Flange using J-8614-01
• Use the special nut and forcing screw to
remove the flange (figure 19).
4. Oil seal. Use a screw driver to pry the seal out of
the bore.
Inspect
• The pinion flange for a smooth oil seal surface,
for worn drive splines, damaged ears and for
smoothness of the bearing contact surface.
Replace if necessary.
5. Dust deflector.
• Tap the d e fle c to r from the fla n g e if
replacement is necessary.
• Clean up the stake points on the flange.
• Clean all foreign material from the contact
area.
Install or Connect
Tools Required:
J-8614-01 Companion Flange Holder and
Remover
J-22388 Pinion Oil Seal Installer (
ring gear)
J-22804-1 Pinion Oil Seal Spacer
J-22836 Pinion Seal Installer (
gear)
1. Dust deflector on the flange.
• Stake new deflector at three new equally
spaced positions. Staking must be such that
the seal operating surface is not damaged.
. Oil seal.
2
• Pack the cavity between the lips of the oil
seal with extreme pressure lithium-base
lubricant.
• Position the oil seal in the bore then place
J-22804-1 over the oil seal and flat against
the seal flange (figure
• Use J-22836 or J-22388 for the
ring gear to press the oil seal into the bore
(figure ).
2 0
• Turn J-22804-1 from installed position 180
degrees to assure proper in s ta lla tio n
against the pinion flange.
/ -inch
9 1 2
/ -inch ring
8 1 2
).
2 0
/ -inch
9 1 2
REAR AXLE 4B-15