9-15
9 Hydro Transmission Repair
Hydro-Gear 310-0500
Figure 22. Swashplate Installation
3. Install the pump shaft lip seal.
4. Reposition the upper housing and install the swash-
plate cradle bearings.
5. Install the slot guide block onto the displacement con-
trol shaft.
6. Install the swashplate assembly into the housing. The
slot on the swashplate must engage the slot guide
block on the swashplate control shaft. Use a tool
such as a screwdriver to hold the guide block in posi-
tion while installing the swashplate.
NOTE: Be sure the thick race of the pump thrust
bearing is toward the pistons.
7. Install the thrust washer and pump block spring onto
the pump shaft.
NOTE: To simplify the installation of the pump block,
wrap a rubber band snugly around the pistons. This is
intended to hold the pistons in their bores as the block kit
is handled during installation.
8. With the swashplate in the neutral (0 angle) position,
lubricate the running surfaces and install the cylinder
block assembly onto the pump input shaft. Make sure
the splines engage properly. Remove the rubber
band at this time.
Figure 23. Cylinder Block Kit with Rubber Band
Figure 24. Install Aligning Pins & Bypass Actuator
A. Alignment Pins
C. Straight Edge
B. Bypass Actuator
D.Casing Boss
10. Install the aligning pins (A, Figure 24) and the bypass
actuator into transaxle housing. Align the straight
(flat) edge (C) of the bypass actuator (B) with the
casing boss (D) or the bypass plate will be damaged.
A
D
B
C
A
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