9.Inspect the shaft for damage on the bearing
surfaces or in the splined areas.
10.Inspect thrust bearing and washers for
wear.
11.Inspect the servo piston for scratched and
wear.
12.Replace seal.Replace worn or damaged
parts as required.
6. HYDROSTATIC PUMP ASSEMBLY
1.Clean all parts in a suitable solvent and dry
with lint free rag.
IMPORTANT: Due to extremely tight
tolerances and finish of internal surfaces
it is very important to maintain absolute
cleanliness during pump assembly.Coat
all internal surfaces with clean 10W30
motor oil when assembling.
Housing and shaft assembly.
2. Apply a small amount of grease to back of
thrust plate and install thrust plate into cam
plate.
3. Install shim.
4. Install cam plate assembly into housing.
Numbers out
Recessed in Bore
2.0mm ±0.3mm
(0.078 in±0.15in).
Cam plate
1.If the needle bearing was removed from the
housing.the new one can be pressed from
the outside inward until the bearing race is
recessed in the bore approximately 2.0mm
±0.3mm(0.078 in±0.15in).Be sure that the
numbers on the bearing race are facing to
the outside of the housing.
5. Install bearing cones to both ends of the
control shaft.
4-30
thrust plate
Bearing cone
O-ring
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