Servicing The Steering Cylinder (4-Wheel Drive) - Toro Groundsmaster 3280-D Service Manual

Servicing the Steering Cylinder (4-Wheel Drive)

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1. Barrel
2. Locknut
3. Piston
4. Shaft
Disassembling the Steering Cylinder (4-Wheel Drive)
Groundsmaster ® 3280-D/3320
05138SL Rev B
5. Head
6. Internal collar
7. Dust seal
8. Back-up washer
1. Slowly pump the cylinder shaft to remove the hydraulic fluid from the steering
cylinder into a drain pan. Plug both the ports and clean the outer surface of
the cylinder.
When you clamp the steering cylinder in a vise, clamp the pivot end
only to prevent damage. Do not close the vise on the barrel.
2. Mount the steering cylinder securely in a vise by clamping on the pivot end
so that the shaft end tilts up slightly. Use a vise equipped with soft jaws.
3. Use a spanner wrench to loosen and remove the internal collar (item 6 in
Figure 101) from the barrel.
4. Hold the end of the shaft and use a twisting and pulling motion to carefully
extract the shaft, internal collar, head, and piston from the barrel.
Clamping the vise jaws against the shaft surface could damage the
shaft. When securing the shaft in a vise, protect the shaft surface.
Figure 101
10.
11.
12.
IMPORTANT
IMPORTANT
Page 5–125
9. O-ring
Rod seal
O-ring
U-ring
Hydraulic System: Service and Repairs