Toro Workman HD Series Service Manual page 124

33.Measure backlash of ring gear through window on
transaxle case. Using a dial indicator, check ring gear
backlash in three equally spaced points. Backlash
should be 0.0031 to 0.0071 in. (0.08 to 0.18 mm) and
must not vary more than 0.0019 in. (0.05 mm) at the
points checked. If backlash is not in this range, replace
shim set in end of differential carrier:
A. If less than target range, decrease total thickness
of shim set until correct backlash is achieved.
B. If exceeds the target range, increase total thick-
ness of shim set until correct backlash is achieved.
NOTE: The thickest shim should be installed
against the bearing.
34.Install differential lock arm onto fork shaft. Insert lock
pin into fork shaft and arm. Pay attention to direction of
slit in lock pin.
35.Apply silicone sealant to mating surface of upper
cover. Pay attention to direction of cover and install. Se-
cure with flange head screws. Torque screws from 18.5
to 22 ft−lb (24.5 to 29.5 N−m).
Drive Train
1. Differential lock arm
2
1
18.5 to 22 ft−lb
(24.5 to 29.5 N−m)
1. Flange head screw (4)
Page 6 − 54
Figure 108
1
Figure 109
Figure 110
2. Upper cover
Workman HD Series