Service Manual

Rev. A
Pro Sweep 5200Hydraulic System Page 3 -- 24
Lift Cylinder Service
1. Wear ring
2. Seal
3. O--ring
4. Tube
5. Rod
6. O--ring
7. Backup ring
8. Retaining ring
9. Head
10. Wiper
11. Breather plug
12. Piston
13. Lock nut
Figure 16
5
7
8
9
6
1
3
2
12
11
10
13
250 to 300 ft--lb
(339 to 407 N--m)
4
Disassembly (Fig. 16)
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 appears in the
tube opening. Insert a screwdriver under the beveled
edge of the retaining ring to start the retaining ring
through the tube opening. Rotate the head counter--
clockwise to remove retaining ring (item 8) as shown in
Figure 17.
4. Grasp end of rod; extract rod assembly and head by
carefully twisting and pulling on the rod.
Figure 17
Spanner
wrench
Retaining
ring
IMPORTANT: Do not clamp v ise jaws against rod
surface. Protect rod surface before mounting in
vise.
5. Mount rod securely in a vise by clamping vise on the
flats of the pivot. Remove lock nut (item 13) and carefully
slide piston and head from the rod.