Steering Cylinder Service (2 Wheel Drive) - Toro Groundsmaster 3280-D Service Manual

Steering Cylinder Service (2 Wheel Drive)

1. Grease fitting
2. Piston rod
3. Wiper
4. Gland
5. Seal
Disassembly (Fig. 38)
1. Remove oil from cylinder into a drain pan by slowly
pumping the cylinder shaft. Plug both ports and clean
the outside of cylinder.
IMPORTANT: Prevent damage when clamping the
steering cylinder into a vise; clamp on the pivot end
only. Do not close vise enough to distort the barrel.
2. Mount steering cylinder in a vise so that the shaft end
tilts up slightly.
3. Using a spanner wrench, remove gland (item 4) from
the barrel.
4. Grasp clevis end of piston rod (item 2); extract rod,
gland (item 4) and piston (item 8) by carefully twisting
and pulling the rod from the barrel.
IMPORTANT: Do not clamp vise jaws against rod
surface. Protect rod surface before mounting in the
vise.
Hydraulic System
9
10
12
13
6. O- -ring
7. O- -ring
8. Piston
9. Seal
3
5
6
7
8
11
Figure 38
5. Mount rod securely in a vise. Remove lock nut (item
11) and piston from the rod. Slide gland off the rod.
6. Remove and discard seal (item 9) and o--rings (items
7 and 10) from the piston. Remove and discard wiper
(item 3), o--ring (item 6) and seal (item 5) from the head.
Inspection
Use eye protection such as goggles when using
compressed air.
1. Wash all cylinder components in solvent. Dry parts
with compressed air.
2. Inspect internal surface of barrel for deep scratches,
out--of--roundness and bending. Replace if worn or
damaged.
Page 5 - - 48
2
4
10. O- -ring
11. Lock nut
12. Barrel
13. Grease fitting
CAUTION
Groundsmaster 3280--D/3320
1