Air Motor
SER 339413
Alemite, LLC
7
Revision (7-06)
Clean and Inspect
1. Clean all metal parts in a cleaning solvent. The solvent
should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
• Use Valve Replacement Kit
393706
.
3. Inspect the bores of Cylinder (
1
) closely for score
marks.
• Replace as necessary.
Assembly
NOTE
: Refer to
Figures 2
and
5
for compo-
nent identification on all assembly proce-
dures.
Air Motor
IMPORTANT: Always use Magnalube-G
Teflon grease in this air motor.
Valve Replacement
NOTE
: Procedural steps
1
-
4
are applicable
to the Valve Replacement Kit.
1. Remove the Exhaust Adapter and O-Ring assembly
(with Pilot Piston assembly) from one end of the valve
kit.
IMPORTANT: Use care during the assembly
of the logic components. Prevent possible
damage to Seals.
2. Install and seat the remainder of the valve kit assembly
into one end of Cylinder (
1
).
3. Install and seat the Exhaust Adapter assembly into the
Cylinder and logic components.
4. Install the Pilot Piston assembly into the Cylinder.
Cylinder
HINT
: Fill the Gasket groove and the
O-Ring groove in Top Cap (
21
) with Teflon
grease.
Fill the Gasket groove in Bottom Cap (
9
)
with Teflon grease.
5. Install Gaskets (
8
) into Top Cap (
21
) and Bottom Cap
(
9
).
• Make sure the Gaskets seat properly.
6. Install O-Ring (
20
) into the Top Cap.
7. Install Muffler (
5
) into Cover (
2
).
Attach Air Motor to Pump Tube
Refer to the Pump
SER Service Guide
for details
.
Bench Test and Operation
Refer to the Pump
SER Service Guide
for details
.
Check the motor for air leakage. If the motor leaks,
refer to the
Troubleshooting Chart
for details.
Installation
General
Additional items that should be incorporated into the
air piping system are listed in
Table 1
.
Upgrade Kit (Conversion)
NOTE
: The Air Motor must be separated
prior to installation onto the pump.
a. Remove Cover (
2
) from the Air Motor.
b. Remove Flange Nuts (
10
) and Screws
(
22
) from the Air Motor.
c. Separate Top Cap (
21
) from Cylinder (
1
),
and the Cylinder from Bottom Cap (
9
).
1. Remove the PML motor from the pump.
2. Remove the air motor piston from the rod.
• Discard the piston and o-ring assembly.
3. Remove the o-ring from the body of the pump and
discard.
4. Install and secure Piston (
g
) onto the rod.
5. Install lubricated Quad-Ring (
f
) onto the Piston.
6. Lubricate the bore of Cylinder (
1
) with Magnalube-G
Teflon grease.
7. Install Bottom Cap (
9
) onto the pump’s body.
8. Install lubricated O-Ring (
h
) onto the upper groove of
the pump body.
Part
Number
Description
338860
Regulator, Gauge, Separator Combination (w/ Auto Dump)
7604-B
Regulator and Gauge (Included with 338860)
5604-2
Moisture Separator (Included with 338860)
5904-2
Lubricator *
* Not recommended, use only as required.
Table 1
Air Line Components
