Advertisement
Reassembly
1. One at a time, install the following parts in the
outlet housing (21): the male gland (13*), four
rubber v-packings (24*) and one plastic v-packing
R
(25*), or five PTFE
v-packings (44*) installed so
the lips of the v-packings face down in the throat,
the female gland (14*), and the bearing (10*).
Maintain a 0.02–0.05 in. (0.508–1.27 mm) gap in
the bearing seam. Install the packing retainer (4)
and loosely install the screws (7).
2. Place the displacement rod (3) in a vise, holding it
by the flats.
a. Install the stop pin (9) into the displacement
rod (3) and secure with the cotter pins (5).
b. Place the packing (12* or 41*) and bearing (11)
on the displacement rod.
c. Install the valve plate (17*) into the displace-
ment rod (3).
d. Place the o-ring (22*) or (42*) onto the valve
seat (15).
e. Use a 2–1/2 in. hex wrench to install the valve
seat (15) into the displacement rod (3).
f.
Remove the displacement rod assembly from
the vise and set it aside.
Service
3. Place the intake valve housing (20) in a vise.
a. Place the o-ring (23* or 43*) around the intake
valve housing (20).
b. Install the valve plate (18*) rounded side up.
c. Install the pin (8) in the housing (20).
d. Leave the intake valve housing (20) in the
vise.
4. Place the cylinder (19) on the intake valve housing
(20).
5. Lubricate the displacement rod assembly and slid
it into the cylinder (19).
6. Place the o-ring (23* or 43*) on the outlet housing
(21). Set the outlet housing onto the cylinder (19),
aligning the 4 holes in the housing with the holes in
the intake housing (20).
7. Place the packing retainer (4) onto the cylinder.
8. Install the tie bolts (6) through the outlet housing
(21). Torque the bolts to 57–64 ft-lb (77–85 NSm).
9. Screw the jam nut (30) all the way up the threads
of the connecting rod (36 or 47). Screw the con-
necting rod into the displacement rod until it stops.
Back off the connecting rod until the pin holes
align, and install the pin (28). Screw the jam nut
down tightly.
10. Align the outlet housing with the tie rods (35 or 46)
and riser tube (50, if used). Tighten the coupling
nut (38) firmly onto the air motor piston rod. Install
and tighten the tie rod locknuts (29).
11. Apply low pressure air to the motor and check to
see that the tie bolts (6) are not binding and the
pump runs smoothly on 15 psi (100 kPa, 1 bar) or
less air pressure. Adjust the bolts as necessary.
12. TIghten the packing retainer screws (7) just
enough to stop leakage, but no tighter. Reinstall
the outlet adapter (48, if used) and intake tube (51,
if used).
13. Remount the pump and connect the ground wire.
11
306818
Advertisement
