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7.2 HYDRO-GEAR FLUID
RECOMMENDATIONS
The fluids used in Hydro-Gear transaxles have been
carefully selected, and only equivalent or better
products should be used.
Typically, an engine oil with a minimum rating of 55 sus
at 210
o
F and an API classification of SH/CD is
recommended. A 20W-50 engine oil has been selected
for use by the factory.
7.3 HYDRO-GEAR REPAIR
Cleanliness is a primary means of assuring satisfactory
life of either new 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.
Figure 22 - Right Transaxle
1. Back Cover
2. Brake Shaft Kit
3. Bevel Gear
4. Upper Housing Assembly
5. Bypass Actuator
6. Motor Shaft
7. Cylinder Block Assembly
8. Bypass Plate
9. Filter
10.Center Section Assembly
11.Cylinder Block Assembly
12.Input Shaft
13.Variable Swashplate
14.Cradle Bearing
15.Brake Disc
16.Right Hand Brake Arm Service
Assembly
17.Brake Disc
PE0480
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