Jeep 1997 Grand Cherokee Service Manual page 135

Original Pinion Gear Depth ARBOR DISC DIAL INDICATOR Variance
ZG
ADJUSTMENTS (Continued)
Fig. 72 Pinion Gear Depth Gauge Tools—Typical
tor face to the pointer. Tighten dial indicator face
lock screw.
(7) With scooter block still in position against the
pinion height block, slowly slide the dial indicator
probe over the edge of the pinion height block.
Observe how many revolutions counterclockwise the
dial pointer travels (approximately 0.125 in.) to the
out-stop of the dial indicator.
ARBOR PINION SCOOTER BLOCK HEIGHT BLOCK PINION BLOCK
PINION GEAR DEPTH VARIANCE
SCREW CONE
DIFFERENTIAL AND DRIVELINE
Fig. 73 Pinion Height Block—Typical
(8) Slide the dial indicator probe across the gap
between the pinion height block and the arbor bar
with the scooter block against the pinion height block
(Fig. 75). When the dial probe contacts the arbor bar,
the dial pointer will turn clockwise. Bring dial
pointer back to zero against the arbor bar, do not
turn dial face. Continue moving the dial probe to the
crest of the arbor bar and record the highest reading.
If the dial indicator can not achieve the zero reading,
the rear bearing cup or the pinion depth gauge set is
not installed correctly.
(9) Select a shim equal to the dial indicator read-
ing plus the drive pinion gear depth variance number
etched in the face of the pinion gear (Fig. 70) using
the opposite sign on the variance number. For exam-
PINION HEIGHT Replacement Pinion Bear Depth Variance BLOCK PINION BLOCK
3 - 77