Low-Pressure Transfer Pump
SER 9916-A
Alemite LLC
5
Revision (2-10)
Overhaul
NOTE
: Refer to
Figure 2
for component
identification on all overhaul procedures.
Prior to performing any maintenance procedure, the
following safety precautions must be observed. Personal
injury may occur.
WARNING
Do not use halogenated hydrocarbon sol-
vents such as methylene chloride or 1,1,1 trichlo-
roethane 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 discharge 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.
Disassembly
Separate Air Motor from Pump Tube
1. Clamp the pump assembly in a soft-jaw vise at Valve
Body (
35
).
2. Remove Nuts (
1
) and Lock Washers (
2
) that secure Air
Motor Assembly (
3
) to the pump assembly.
NOTE
: The bottom end cap of the Air
Motor Assembly remains on the pump tube
during the next procedure.
3. With a side-to-side motion, pull the Air Motor
Assembly from Body (
15
) and off Tie Rods (
12
).
NOTE
: The following three (3) steps are
performed only as required.
4. Unscrew the Adapter from Shut-Off Valve (
4
).
5. Unscrew the Shut-Off Valve from the Air Motor
Assembly.
Pump Assembly
IMPORTANT: The following procedures do
not separate Tie Rods (12) from Couplings
(14), Keepers (13), the bottom end cap of the
air motor and Outlet Body (15).
These components should remain assembled
when possible.
Valve Body and Stop Assembly
6. Remove Nuts (
1
) and Lock Washers (
2
) that secure
Ring (
36
) to the pump assembly.
• Remove the Ring from Valve Body (
35
).
NOTE
: The Valve Body [with internal com-
ponents] separates from Stop (
29
).
7. Remove Pin (
31
) and Ball (
32
) from the Seat.
8. Remove the Seat from the Valve Body.
9. Remove O-Ring (
34
) from the Valve Body.
10. Remove Stop (
29
) from Cylinder (
28
).
11. Remove O-Ring (
30
) and O-Ring (
11
) from the Stop.
Cylinder Assembly
12. Remove Cylinder (
28
) from the Outlet Body.
Air Piston Assembly
13. Remove Nut (
5
) and Washer (
6
) that secures Air
Piston (
7
) to Rod (
22
).
NOTE
: Place an appropriate size punch or
other suitable tool into the hole of the Rod.
14. Remove the Air Piston from the Rod.
15. Remove Quad-Ring (
8
) from the Air Piston.
16. Remove O-Ring (
9
) and Washer (
10
) from the Rod.