Simplicity Coronet Series Service & Repair Manual page 93

9 Hydro Transmission Repair
Hydro-Gear 310-0500
36. Reposition the housing and remove the input shaft lip
seal from the housing bore. A hook type tool may be
used to pry the seal out. Care must be taken to avoid
damage to the housing bore, shaft sealing surface or
bearing. Once removed, the seal is not to be reused.
37. Remove the input shaft bearing retaining ring.
38. Remove the pump and input shaft assembly from the
transaxle housing.
39. Inspect the shaft and bearing for unusual wear or
damage.
40. Reposition the housing and remove the displacement
control shaft and lip seal.
41. Inspect the housing for damage.
Assembly
Important Notes:
All parts should be thoroughly cleaned in a suitable sol-
vent. All sealant material MUST be removed from the
housing halves prior to reassembly.
Inspect all parts for damage, nicks or unusual wear pat-
terns. Replace all parts having unusual, excessive wear
or discoloration.
Inspect the sealing surfaces, bearing surfaces and shaft
spline. Polish the sealing areas on the shafts, if neces-
sary. Replace any worn or damaged parts.
WARNING
Most parts have critical tight tolerance surfaces.
Care must be exercised to prevent damage to
these surfaces during assembly. Protect
exposed surfaces, openings and ports from
damage or foreign material.
The running surfaces of the cylinder blocks MUST be flat
and free from scratches. If scratches or wear are found
on the running surface of the cylinder block or center
section, polish or replace the parts. When polishing
these surfaces, up to 0.0004 in. may be removed. If this
is not sufficient to obtain a flat surface free of scratches,
the part should be replaced.
Clean and lightly oil parts prior to assembly of the
transaxle.
NOTE: Be sure to torque all threaded parts to the recom-
mended torque levels and replace all o-rings and shaft
seals.
1. Install the swash plate control shaft. See Figure 20.
2. Install the pump input shaft assembly and retaining
ring into the housing. See Figure 21.
Figure 18. Remove Input Shaft Seal
Figure 19. Shaft and Bearing
Figure 20. Install Displacement Control Shaft
Figure 21. Install Pump Shaft Assembly
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