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5.15
HYDROGEAR REPAIR (MINOR)
Minor repairs may be performed, following the
procedures in this section.
Cleanliness is a primary means of assuring satisfactory
life of either new or repaired units. Cleaning parts by
using solvent wash and air drying is usually adequate. As
with any precision equipment, all parts must be kept free
of foreign materials and chemicals.
Protect all exposed sealing surfaces and open cavities
from damage and foreign material. The outer surfaces of
the transaxle should be cleaned before beginning any
repairs.
Shaft Seals
Lip type seals are used on the pump input shaft, the
displacement control shaft and bypass actuator shaft of
the transaxle. These seals can be replaced without major
disassembly of the unit. Replacement of these seals will
require removal of the transaxle from the machine frame.
To remove the input shaft seal carefully pull the seal out
of the housing bore with a "hook" type tool or a slide
hammer type puller. Care must be taken to avoid
damage to the housing bore or to the shaft sealing
surface.
Lubricate the new seal prior to installation with a
petroleum jelly.
Wrap the shaft spline with a thin plastic or cellophane
tape to prevent damage to the new seal lip during
installation.
Slide the seal over the shaft and press it into the housing
bore. Be careful not to damage the seal. The seal should
seat against the retaining ring.
The displacement control shaft seal and bypass actuator
shaft seal may be replaced following similar procedures.
5-30
915 EZRIDER SERVICE MANUAL
Seals
5.16
HYDROGEAR REPAIR (MAJOR)
1 .
Drain the oil by removing the breather assembly and
positioning the IHT so that the breather port is down
to allow the oil to drain thoroughly.
2. Position and secure the IHT with the upper housing
down to allow access to the ten housing assembly
cap screws.
3. Remove the eight rear housing assembly cap screws.
4. Remove the ten bottom cover assembly screws.
5.
Remove the toques head cap screw holding the
brake arm to the transaxle case.
6.
Remove the bottom and rear covers from the
transaxle.
NOTE: The sealant will make the covers difficult to
remove.
7.
All components should remain in the upper housing
(positioned down).
Remove the brake gear from the brake shaft.
8.
Remove the oil seals from the brakes shaft. Push out
9.
the brake shaft to remove the support bearing.
NOTE: Prior to reassembly the lower and rear covers
must be thoroughly cleaned and old sealant must be
removed.
NOTE: The lip seals must not be re-used during
reassembly.
10. Inspect the final drive gear teeth for excessive wear
or damage.
Ariens®
DRIVE TRAIN
01546200 Orig. 9/98
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