Hydro Transmission Repair (Major) - Ariens Sierra 936014-026 Service Manual

6.5 HYDRO TRANSMISSION REPAIR
(MAJOR)
1. Drain the oil by removing the breather assembly
and positioning the transmission so the breather
port is down to allow the oil to drain thoroughly.
Figure 30
2. Position and secure the transmission with the
upper housing down to allow access to the twenty
housing assembly cap screws.
3. Using the appropriate tool, remove the twenty
assembly screws.
4. Loosen the nut and the brake arm mounting bolt.
Figure 31
5. Separate the two housing halves by applying
pressure with two large straight blade screw
drivers. Use caution to prevent damage to the
mating sealing surfaces as you separate the two
halves.
NOTE: The sealant will make two halves difficult to
separate.
6. All components should remain in the upper
housing half (positioned down) as the bottom is
lifted off.
CAUTION: The axle/differential assembly
may stick as the lower housing is being lifted
off of the upper housing.
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7. Inspect the lower housing for damage. Inspect the
axle journal bearing pockets for excessive wear.
Inspect the brake rotor/stator pocket for excessive
wear.
NOTE: Prior to reassembly the housing mating sur-
faces must be thoroughly cleaned and old sealant must
be removed.
8. Lift the axle/differential assembly out of the upper
housing.
NOTE: It will be necessary to remove any burrs or rust
from the axle ends prior to the removal of the two
bronze bearings or damage to the bearings will occur.
9. Remove the two bronze journal bearings, four lip
seals and flat washers from the axle ends.
NOTE: The lip seals must not be re-used during reas-
sembly.
10.Inspect the bronze bearings for excessive wear.
The bearings should be 0.7535" to 0.7561" I.D.
11.Inspect the axle ends for damage or excessive
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wear. The axle ends should be 0.7486" to 0.7496".
6 - 28
Figure 32
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