Service Manual

40 ZT-2100
Figure 4. Seal Kit Replacement
Before disassembly, wipe the unit free of any
debris to avoid contamination.
Refer to Figure 4.
Input Seal
1. Remove the input pulley from the input
shaft.
2. Remove the seal retaining ring (57).
3. Carefully pull the input seal (56) out of the
housing bore with a “hook” type tool. Care
must be taken to avoid damage to the hous-
ing bore or shaft sealing area.
4. Lubricate the new seal with petroleum jelly
prior to installation.
5. Wrap the shaft keyway (splines) with cel-
lophane to prevent damage to the seal lip
during installation.
6. Slide the seal over the shaft and press it into
the housing bore.
7. The seal should seat against the spacer.
8. Install the seal retaining ring (57) and make
sure it is fully seated in its groove.
Output Seal
1. The seal (96) can be replaced by following
steps 2-6 of the procedure used to replace
the input seal.
2. Install the retaining ring (157) and make sure
it is fully seated in its groove.
Motor Shaft Seal
1. Remove the brake assembly. See page
41.
2. The seal (10) can be replaced by following
steps 3-6 of the procedure used to replace
the input shaft.
Trunnion Seal
1. Remove the control arm and any attach-
ments to the control arm. See page 39.
2. The seal (41) can be replaced by following
steps 3-6 of the procedure used to replace
the input shaft.
Bypass Seal
1. Remove the bypass arm and any attach-
ments to the bypass arm. See page 39.
2. Remove the seal retaining ring (33). Re-
move the bypass rod, keeping the retaining
ring (31) attached. Remove the bypass rod
seal (30). Deburr the bypass rod.
3. Install the seal (30). Install the bypass rod
with the retaining ring (31) attached. Install
the seal retaining ring (33).
SEAL KIT REPLACEMENT
33
31
30
57
56
157
96
41
10