Steering Cylinder Service - Toro GroundsmasterR 4300-D Service Manual

Steering Cylinder Service

6
11
8
3
17
1. Front shaft (1")
2. Rear shaft (1.250")
3. Front head (1")
4. Rear head (1.250")
5. Roll pin
6. Dust seal
Disassembly (Fig. 103)
1. Remove oil from steering cylinder into a drain pan by
slowly pumping the cylinder shaft. Plug both ports and
clean the outside of the cylinder.
IMPORTANT: Prevent damage when clamping the
steering cylinder into a vise; clamp on the barrel cle-
vis ONLY. Do not close vise on barrel.
2. Mount steering cylinder securely in a vise by clamp-
ing on the barrel clevis. Use of a vise with soft jaws is rec-
ommended.
3. Using a spanner wrench, loosen and remove exter-
nal collars from both ends of barrel.
4. Use a twisting and pulling motion to carefully extract
the rear head from the barrel and rear shaft.
Hydraulic System
14
1
15
Figure 103
7. O- -ring
8. External collar (2 used)
9. Piston
10. Rear head seal
11. Front head seal
12. Wear ring
Page 4 - - 114
12
7
5
9
13. Dust seal
14. Barrel
15. Piston seal
16. Rear head O- -ring/backup ring
17. Front head O- -ring/backup ring
5. Grasp end of front shaft and use a twisting and pull-
ing motion to carefully extract the rear shaft, piston, front
shaft and front head assembly from the barrel.
6. Remove cylinder from vise.
IMPORTANT: When removing roll pin from front and
rear shafts, make sure that shaft surfaces are not
damaged.
7. Remove and discard roll pin (item 5) that secures
front shaft to rear shaft. Then remove rear shaft (item 2),
piston (item 9) and front head (item 3) from front shaft.
8. Remove and discard seals, O--rings and wear ring
from piston and heads.
2
16
4
8
10
13
Groundsmaster 4300--D