User's Manual

Repair

30 313527V

Supply Unit Repair

D200s 6.5 in. Ram Piston Rods

Always service both cylinders at the same time. When

you service the lift rod always install new o-rings in the

piston rod seal and ram piston.

Disassemble Piston Rod Seal

1. Relieve pressure.

2. Remove the nuts (1a) and lockwashers (1b) holding

the tie bar (1c) to the piston rods (1d). See parts

illustration on page 38.

3. Remove nuts (103, 105) and washers (102, 104).

See parts illustration on page 42.

4. Lift tie bar (1c) off of rods.

5. Remove retaining ring (1h) by gripping the ring tab

with a pair of pliers and rotating the ring out of its

groove.

6. Remove snap ring (1e) and rod wiper (1f).

7. Remove guide sleeve (1g) by sliding it off of rod

(1d). Four 1/4 in -20 holes are provided to ease

removal of the guide sleeve.

8. Inspect parts for wear or damage.

Assemble Piston Rod Seal

1. Install new o-rings (1j,1k), rod wiper (1f), and snap

ring (1e). Lubricate packings with o-ring lubricant.

2. Slide guide sleeve (1g) onto rod (1d) and push it into

cylinder. Replace retaining ring (1h) by feeding it

around the guide sleeve groove.

3. Reinstall tie bar (1c) using nuts (1a) and lockwash-

ers (1b). Torque to 40 ft-lb (54 N•m).

4. Reinstall washers (102, 104) and nuts (103, 105).

To reduce the risk of serious injury whenever you are

instructed to relieve pressure always follow the Pres-

sure Relief Procedure on page 16. Do not use pres-

surized air to remove the guide sleeve or the piston.

. 30: 6.5 in. Piston Rod Seal

TI10784A