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Repair
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pres-
sure Relief procedure. Do not use pressurized air to
remove the guide sleeve or the piston.
D200 3 in. Ram Piston Rods
Always service both cylinders at the same time. When
you service the piston rod always install new o-rings in
the piston rod seal and ram piston.
Disassemble Piston Rod Seal and Bearing
1. Relieve pressure.
2. Access piston rod seal and bearing.
a. Remove nuts (6) and lockwashers (5) holding
the tie bar (4) to the piston rods (2n). Refer to
parts illustration on page 20 or page 22.
b. Remove tie bar (4).
3. Remove retaining ring (3).
4. Remove piston rod seal and bearing.
a. Slide end cap (2a), pin (2b), o-ring (2c), and
spring (2m) up off of the piston rod (2n).
b. Remove retaining ring (2k) and bearing (2j) from
end cap (2a) and remove o-ring (2d).
5. Inspect parts for wear or damage. Replace as nec-
essary.
NOTE: Do not reinstall end cap assembly if the ram
piston (202e) needs to be removed from the piston
rod. See Assemble Piston Rod Seal and Bearing
instructions.
3A0233B
202c
202a
202j
202m
202n
F
. 15: 3 in. Piston Rod Seal
IG
Assemble Piston Rod Seal and Bearing
See F
. 15.
IG
1. Lubricate o-ring (2d) and bottom bearing (2j).
a. Install o-ring (2d), bottom bearing (2j), and
retaining ring (2k) into end cap (2a).
b. Install new o-ring (2c) and pin (2b) on end cap
(2a). Lubricate o-ring (2c) and end cap (2a).
c. Slide spring (2m) and end cap (2a) on piston
rod (2n).
2. Install retaining ring (3).
3. Install tie bar (4), washers (5), and nuts (6).
Repair
203
202d
202b
202k
TI10520A
17
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