High-Pressure Material Pump
SER 7889-6
Alemite Corporation
7
Revision (3-03)
4. Lower the Air Motor onto the wood block.
5. Remove upper Spring Clip (
18
) that secures the air
motor piston to the Coupling.
6. Rotate the Coupling until the air motor piston is free.
7. Remove the Air Motor Assembly.
Access to Upper Seal (Packing)
8. Remove lower Spring Clip (
18
) that secures Upper
Piston Rod (
19
) to the Coupling.
• Remove the Coupling from the Upper Piston Rod.
9. Loosen Jam Nut (
21
) that secures the Pump Tube
assembly to Body (
16
).
10. Place a lever between the Upper Mounting and
Packing Screw (
11
).
CAUTION
Support the Body and Upper Mounting assembly
during removal. Damage to the Upper Piston Rod
can occur.
11. Unscrew the Body and Upper Mounting assembly
from Pump Tube (
24
).
12. Remove Gasket (
23
) from the Body.
Overhaul
NOTE
: Refer to
Figure 3-A
and
3-B
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-trichlor-
ethane in this pump. An explosion can result
within an enclosed device capable of containing
pressure when aluminum and/or zinc-plated parts
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. Material discharged at
high velocity can penetrate the skin and cause
severe injury. Should any fluid appear to puncture
the skin, get medical care immediately.
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 vertically in a vise at Bung
Adapter (
22
).
2. Remove Screws (
5
), Lock Washers (
7
), and Nuts (
8
)
that secure the Air Motor Assembly to the Pump Tube
Assembly.
3. Lift the motor upward to expose upper Coupling (
17
)
and at the same time place a wood block (2’ x 4’) onto
the surface of Upper Mounting (
12
). See
Figure 4
.
Figure 4
Separation of Air Motor from Pump Tube with
use of Wooden Block
