SER 339610-1
Low-Pressure Transfer Pump
Revision (8-06)
6
Pump Body Assembly
1. Install and seat Seal (
14
) [stem end first], Bearing (
15
)
[stepped end first], Seal (
16
) [stem end first], and
Washer (
17
) into the bottom of Pump Body (
10
).
2. Secure the components with Retaining Ring (
18
).
• Make sure the Retaining Ring seats properly in the
groove.
3. Install O-Ring (
9
) onto the top groove of the Pump
Body.
• Install O-Ring (
12
) onto the bottom groove of the
Pump Body.
4. Screw Bushing (
13
) [with thread sealant] into the
Pump Body as required
• Tighten the Bushing securely.
Rod and Fluid Piston
5. Install Retaining Ring (
20
) onto Rod (
19
) as required.
IMPORTANT: Make sure the ground side of
Plate (
23
) contacts Fluid Piston (
21
).
6. Install Fluid Piston (
21
) [segmented side first], Gasket
(
22
), and Plate (
23
) [ground side first] onto the bottom
of the Rod.
7. Install Nut (
24
) that secures the Plate to the Rod.
• Tighten the Nut securely.
• Place an appropriate size punch or other suitable tool
into the hole of the Rod.
CAUTION
Install the Rod assembly into the Body with a
twisting motion. Use care not to damage the Seals.
8. Install the Rod assembly into the bottom of the Pump
Body.
• Position the Fluid Piston flush with the bottom of the
Body.
Valve Body Assembly
24. Unscrew Valve Body (
28
) from Cylinder (
25
).
25. Remove O-Ring (
12
) , Stop (
26
), and Ball (
27
) from
the Valve Body.
Clean and Inspect
1. Clean all metal parts in cleaning solvent. The solvent
should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Inspect Air Piston (
5
) and Fluid Piston (
21
) for fatigue
cracks.
• Replace as necessary.
4. Inspect Rod (
19
) closely. Use a magnifying glass to
detect any score marks on the Rod.
• Replace as necessary.
5. Closely inspect the mating surfaces of all check valve
components for any imperfections. Ensure a smooth
and clean contact is obtained when assembled.
EXAMPLE
: Place Ball (
27
) into Valve
Body (
28
). Fill the Valve Body with solvent.
Make sure no leakage occurs.
Assembly
NOTE
: Prior to assembly, certain compo-
nents require lubrication. Refer to
Table 3
for details.
Pump Tube Assembly
NOTE
: Refer to
Figure 4
for a section view
of the pump tube assembly.
Item No.
Description
Item No.
Description
Clean Oil
7
O-Ring, 3/8 " ID x 1/2 " OD
12
O-Ring, 3 " ID x 3-1/8 " OD
9
O-Ring, 2-3/4 " ID x 3 " OD
16
Seal, 1/2 " ID x 7/8 " OD
Magnalube-G Teflon Grease
8
Quad-Ring, 2-5/8 " ID x 3 " OD
14
Seal, 1/2 " ID x 3/4 " OD
Coat the Inside Diameter of the Air Motor Assembly
Table 3
Lubricated Components
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