Repair
12
3A6939B
Repair
Disassembly
1.
Relieve the pressure. Follow the Pressure Relief
Procedure, page 9.
2.
Disconnect the hoses from the lower and plug the
ends to prevent fluid contamination.
3.
Remove the 2-piece shield (9) by inserting a screw-
driver straight into the slot, and using it as a lever to
release the tab. Repeat for all tabs. Do not use the
screwdriver to pry the shields apart. See F
4.
Remove the hose clamp holding the drain bottle to
the tie rod (3). Loosen the coupling nut (5) and
remove the collars (6). Remove the coupling nut
from the piston rod (3). Unscrew the lock nuts (4)
from the tie rods (3). Separate the motor (1) and
lower (2). See Parts, page 14.
NOTE: To repair the air motor or lower, see the sep-
arate manuals listed under Related Manuals on
page 2.
Reassembly
1.
If the coupling adapter (8) and tie rods (3) have not
been disassembled from the motor (1), skip to step
2.
If the coupling adapter (8) and tie rods (3) have
been disassembled from the motor (1), follow these
steps:
a.
Loosen, but do not remove, the screws (13)
holding the mounting plate (12) to the motor (1).
b.
Screw the tie rods (3) into the mounting plate
(12) and torque to 50-55 ft-lb (68-75 N•m).
c.
Fill the cavity in the bottom of the motor shaft
with grease (Lubriplate
®
930-AA).
d.
Lubricate the threads of the coupling adapter
(8).
e.
Slide the adapter nut (7) onto the coupling
adapter (8). Screw the adapter nut (7) onto the
motor shaft (S) and torque to 90-100 ft-lb
(122-136 N•m).
f.
Continue to step 2.
2.
Assemble the coupling nut (5) over the piston rod
(3).
3.
Orient the lower (2) to the motor (1). Position the
lower on the tie rods (3).
4.
If you are reusing lock nuts (4) and the nylon of the
lock nut is worn or cut, add blue thread locker to the
tie rod threads.
5.
Screw the lock nuts (4) onto the tie rods. Leave the
lock nuts (4) loose enough to allow the lower to
move so that it can be aligned correctly.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
splashing fluid and moving parts, follow the Pressure
Relief Procedure before servicing the equipment.
F
IG
. 3. Shield Disassembly
ti15759a
ti15770a
Step 1
Step 2
