Toro Groundsmaster 3280-D Service Manual page 205

Disassembling the Steering Cylinder (2-Wheel Drive) (continued)
Inspecting the Steering Cylinder
Assembling the Steering Cylinder (2-Wheel Drive)
Groundsmaster ® 3280-D/3320
05138SL Rev B
Clamping the vise jaws against the shaft surface could damage the
shaft. When securing the shaft in a vise, protect the shaft surface.
5. Mount the shaft in a vise. Remove the locknut and piston from the shaft.
Carefully slide the head and internal collar off the shaft.
6. Remove and discard the BP seal (item 2 in
piston. Remove and discard the O-ring, dust seal, and BS seal from the head.
Use eye protection such as goggles when using compressed air.
1. Wash all the cylinder components in clean solvent and dry them with
compressed air.
2. Inspect the internal surface of the barrel for deep scratches, out-of-roundness,
and bending.
3. Inspect the head, shaft, and piston for excessive pitting, scoring, and wear.
4. Replace the steering cylinder if the internal components are worn or
damaged.
1. Use a new seal kit and replace all the seals and O-rings to the piston and
head. Apply clean hydraulic fluid to all the seal kit components before you
install them.
Clamping the vise jaws against the shaft surface could damage the
shaft. When securing the shaft in a vise, protect the shaft surface.
2. Mount the shaft securely in a vise.
3. Coat the shaft lightly with clean hydraulic fluid. Slide the internal collar onto
the shaft.
Note: Do not damage the seals and O-rings during installation.
4. Install the head and piston onto the shaft. Install the locknut onto the shaft
and tighten the locknut.
5. Remove the shaft from the vise.
When clamping the cylinder's barrel in a vise; clamp on the pivot end
only to prevent damage. Do not close the vise on the barrel.
6. Mount the steering cylinder barrel in a vise equipped with soft jaws by
clamping on the barrel so that the shaft end tilts up slightly.
IMPORTANT
CAUTION
IMPORTANT
IMPORTANT
Page 5–121
Figure 99) and O-rings from the
Hydraulic System: Service and Repairs