Groundsmaster 4300--DHydraulic System Page 4 -- 114
Steering Cylinder Service
1. Front shaft (1”)
2. Rear shaft (1.250”)
3. Front head (1”)
4. Rear head (1.250”)
5. Roll pin
6. Dust seal
7. O--ring
8. External collar (2 used)
9. Piston
10. Rear head seal
11. Front head seal
12. Wear ring
13. Dust seal
14. Barrel
15. Piston seal
16. Rear head O--ring/backup ring
17. Front head O--ring/backup ring
Figure 103
2
3
6
8
9
10
11
13
1
5
7
12
14
15
16
17
4
8
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 avise; clampon thebarrel cle-
visONLY.Donotcloseviseonbarrel.
2. Mount steering cylinder securely in a vise by clamp-
ingonthe barrel clevis. Use ofavisewithsoft 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.
5. Grasp end of front shaft and use a twisting and pull-
ing motion to carefullyextract the rear shaft,piston, front
shaft and front head assembly from the barrel.
6. Remove cylinder from vise.
IMPORTANT: When removing rollpin 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.
