Hydraulic Lift Cylinder; Hydraulic Offset Cylinder (Tow Hitch Kit); Hydraulic Cylinder Service - Toro ProCore Processor Service Manual

Hydraulic Cylinder Service

HYDRAULIC
LIFT CYLINDER
250 to 300 ft- -lb
(339 to 407 N- -m)
HYDRAULIC
OFFSET CYLINDER
15
30 to 35 ft- -lb
(41 to 47 N- -m)
1. Wear ring
2. Seal
3. O- -ring
4. Tube
5. Rod
6. O- -ring
NOTE: The service procedure for the ProCore Proces-
sor lift cylinder and offset cylinder is the same.
Disassembly (Fig. 22)
1. Remove oil from the lift cylinder into a drain pan by
slowly pumping the cylinder rod. Plug ports and clean
the outside of the lift cylinder.
IMPORTANT: Prevent damage when clamping the
lift cylinder into a vise; clamp on the pivot only.
2. Mount lift cylinder in a vise so that the shaft end tilts
up slightly.
3. Using a spanner wrench, rotate head (item 9) clock-
wise until the edge of the retaining ring (item 8) appears
in the tube opening. Insert a screwdriver under the bev-
eled edge of the retaining ring to start the retaining ring
through the tube opening. Rotate the head counter--
clockwise to remove retaining ring (Fig. 23).
Hydraulic System
1
2 3
4
14 13
12
1
2
12
13
14
7. Backup ring
8. Retaining ring
9. Head
10. Wiper
11. Seal
Page 4 - - 28
5
5
4
3
16
Figure 22
Spanner
wrench
Retaining
ring
4. Grasp end of rod; extract rod and head assembly by
carefully twisting and pulling on the rod.
IMPORTANT: Do not clamp vise jaws against rod
surface. Protect rod surface before mounting in
vise.
8
6 7
9
11
10
8
7
6
9
10
11
12. O- -ring
13. Piston
14. Lock nut
15. Grease fitting
16. Spacer (offset cylinder)
Figure 23
ProCore Processor
15