Chrysler 300M Service Manual page 1245

21 - 84 TRANSAXLE
FINAL DRIVE (Continued)
NOTE: The dial indicator used to make this mea-
surement must have a face that shows 0-50-0 (Spe-
cial Tool C-3339) readings (Fig. 195). All steps from
this point forward will reflect this assumption. This
will give you proper shim thickness.
Fig. 195 0-50-0 Dial Indicator
1 - DIAL INDICATOR
(9) Before making a pinion depth measurement
the dial indicator must be zeroed. This is done by
placing the dial indicator in the zeroing fixture (spe-
cial tool 6549-6). Then place the zeroing fixture on a
flat surface. Adjust the dial face so the pointer on the
dial indicator lines up with the zero (Fig. 196).
Fig. 196 Zero Dial Indicator
1 - DIAL INDICATOR
2 - FLAT SURFACE
3 - ZEROING FIXTURE
(10) Compress the dial indicator slightly and
insert dial indicator pin into centering block (Fig.
197).
Fig. 197 Mounting Dial Indicator to Centering Block
1 - CENTERING BLOCK
2 - GAUGE DISC
3 - DIAL INDICATOR
(11) Pivot dial indicator back and forth (Fig.
198)on centering pin to obtain the shortest distance
measurement. This will be the lowest number
reading on dial indicator. Record the number
obtained. Now rotate the gauge disc clockwise 1/3 of
a turn and recheck readings. Record number
obtained. Rotate the gauge disc another 1/3 of a turn
clockwise and take another reading. Average the
three readings. Record this pinion depth measure-
ment. If the readings differ by more than two thou-
sandths recheck gauge disc installation, it may have
been installed slightly cocked.
Fig. 198 Pivot Dial Indicator
1 - CENTERING BLOCK
2 - GAUGE DISC
LH