(11) Pivot dial indicator back and forth (Fig.
197)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.
(12) To determine the required shim thickness, the
pinion depth measurement must be adjusted. The
pinion shim adjustment number is the first of seven
digits ink stamped on the shank of the transfer shaft
(Fig. 198). Using the adjustment factor chart, convert
the adjustment number to the corresponding adjust-
ment factor. Utilizing the pinion depth measurement
obtained in Step 11, add or subtract the adjustment
factor to calculate the required shim thickness. Refer
to pinion head shim chart for shim selections. This is
the shim that will be installed between the transfer
shaft pinion head and the front transfer shaft bear-
ing. Refer to the following examples for further
explanation:
(13) Example 1 in (MM):
• Measured pinion shim depth: 0.789mm
• Adjustment number on transfer shaft: +2
• Adjustment factor (mm): -0.051mm
• Shim size needed: 0.789-0.051= 0.738mm
(14) Example 2 in (IN):
• Measured pinion shim depth: 0.032in
• Adjustment number on transfer shaft: -1
• Adjustment factor (in): +0.001
• Shim size needed: 0.032+0.001= 0.033in
(15) Remove dial indicator, gauge disc and center-
ing block from transaxle.
(16) Install shim selected in Step 12 of this proce-
dure onto the transfer shaft (Fig. 198).
(17) Press front transfer shaft bearing onto trans-
fer shaft (special tool 6052). The shim must be in
place before pressing on bearing (Fig. 199).
(18) At this point the pinion depth has been deter-
mined and the shim has been installed onto the
transfer shaft. Before the pinion is installed into the
transaxle case, bearing preload must be determined
for the differential bearings. The following steps
must be performed before the pinion is installed.
Fig. 197 Pivot Dial Indicator
1 - CENTERING BLOCK
2 - GAUGE DISC
ADJUSTMENT FACTOR CHART
PINION HEAD SHIM CHART
LH TRANSAXLE 21 - 85
FINAL DRIVE (Continued)
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