SER 9940
High-Pressure Pump (Stripped and Portable)
Revision (2-03)
8
Alemite Corporation
IMPORTANT: Prior to performing any
maintenance procedure, the following
safety precautions must be observed.
Personal injury may occur.
WARNING
Do not use halogenated hydrocarbon
solvents such as methylene chloride or 1,1,1-
trichloroethane in this pump. An explosion can
result within an enclosed device capable of
containing pressure when aluminum and/or
zinc-plated parts in the pump come in contact
with halogenated hydrocarbon solvents.
Release all pressure within the system prior to
performing any overhaul procedure.
• Disconnect the air supply line from the
pump motor.
• Into an appropriate container, operate the
control valve to discharge remaining
pressure within the system.
Never point a control valve at any portion of
your body or another person. Accidental dis-
charge of pressure and/or material can result
in injury.
Read each step of the instructions carefully.
Make sure a proper understanding is achieved
before proceeding.
Overhaul
NOTE
: Refer to
Figures 2-A
and
2-B
for component identification on all
overhaul procedures.
Disassembly
NOTE
: The following procedures con-
sider the pump assembly removed from
its container.
Separate Pump Tube from Air Motor
Step for Model 9941 Only
1. Remove Hose (
9
) from Adapter (
8
) as required.
2. Loosen Connector (
4
) that secures Tube (
5
).
3. Remove Nuts (
22b
) that secure the Body to the Air Motor
Assembly.
NOTE
: The bottom end cap of the Air Motor
Assembly remains on the pump tube during the
next procedure.
4. With a side-to-side motion, pull the Air Motor
Assembly from the Body.
5. Remove Keepers (
32
) from the Body.
6. Remove the bottom end cap from the Body.
Pressure Control
7. Unscrew Pressurtrol (
3
) from Adapter (
2
).
• Remove the Adapter from Air Motor Assembly (
22
) as
needed.
8. Unscrew Connector (
4
) from the Pressurtrol as needed.
9. Remove Tube (
5
) from Fitting (
6
) as required.
10. Unscrew Fitting (
6
) from Adapter (
7
) as needed.
Step for Model 9941 Only
11. Unscrew Adapter (
8
) from Adapter (
7
) as needed.
12. Unscrew the Adapter from Body (
30
) as needed.
Pump Tube Assembly
Air Piston
13. Remove Nut (
23
) and Washer (
24
) that secures Air Piston
(
25
) to Upper Rod (
37
).
• Remove the Air Piston from the Rod.
NOTE
: Place an appropriate size punch or other
suitable tool into the hole of the Upper Rod. See
Figure 2-B
.
14. Remove O-Ring (
27
) and Washer (
28
) from the Upper Rod.
15. Remove Quad-Ring (
26
) from the Air Piston.
Pump Tube (Outer Components)
16. Remove Roll Pin (
56
) that secures Primer Disc (
55
) to
Primer Rod (
49
).
• Use an appropriate size punch.
NOTE
: Position the rod assembly as required to
align the Roll Pin with the top hole in Primer
Body (
57
).
17. Remove the Primer Disc from the Primer Rod.
18. Unscrew the Primer Body from the Tube.
