Service Manual

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
steeringcylinderinto a vise; clamponthe barrel cle-
visONLY.Donotcloseviseonbarrel.
2. Mount steering cylinder securely in a vise by clamp-
ingonthebarrelclevis.Useofavisewithsoftjaws isrec-
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-
ingmotion to carefullyextract the rearshaft,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 r ear 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.