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Assembly
NOTE
Prior to assembly, certain components
require lubrication in clean oil. Refer to
Table 6 for details.
Body packing
Refer to Fig. IPB 1 (page 20) for a section
view of pump tube assembly.
1 Position body (11) large diameter
upward.
2 Install and seat washer (14).
3 Place internal ring (15) with concave
surface upward.
4 Insert four V-packings (16) with concave
surface upward.
5 Place external ring (17) with flat surface
upward.
6 Install and seat washer (14).
7 Place lantern ring (18).
8 Install and seat washer (14).
9 Place internal ring (15) with concave
surface upward.
10 Slide on four V-packings (16) with
concave surface upward.
11 Install external ring (17) with flat surface
upward.
12 Install spacer (20), small diameter first,
into body. Make sure spacer aligns with
bolt hole and seats properly.
13 Install screw (19) into spacer and body.
Tighten screw securely. Make sure
spacer moves.
14 Position body small diameter upward.
NOTE
Make sure screw (19) does not bind on
spacer (20). Screw seats on body (11)
and allows spacer (20) to move.
15 Install and align upper mounting (8)
onto body.
16 Install and align plate (7) onto body.
17 Install lock washers (6) and screws (5)
that secure plate and upper mounting to
body. Tighten screws securely in a criss-
cross pattern.
Pump tube
18 Secure extension rod (25) securely in a
soft-jaw vise.
19 Screw rod (3) onto extension rod with
threadlocker. Tighten securely.
20 Install rod assembly extension rod first
into top of body assembly.
NOTE
Use care installing rod assembly into
body assembly. Damage to V-packings
can occur.
Piston packing
21 Clamp flats of guide (28) horizontally into
a soft-jaw vise.
22 Install and seat spring (29) onto guide.
Lubricated components
Item
Description
16
V-packing (Buna-N and PTFE)
22
O-ring, 1
/
in ID × 1
3
4
34
O-ring, 1
/
in ID × 2 in OD
7
8
NOTE
Use care not to trap spring (29) during
assembly.
15
23 Position valve seat (32) with small diam-
eter upward.
24 Install and seat internal ring (31) with
concave surface upward.
25 Insert five V-packings (16) with concave
surface upward.
26 Place external ring (30) with flat surface
upward.
27 Install washer (14).
28 Screw valve seat assembly into guide.
Reposition spring onto body as required.
29 Install stop (27) onto stem (26).
30 Install valve seat and guide assembly
guide end first onto stem assembly.
31 Clamp flats of valve (33) horizontally into
a soft-jaw vise.
32 Screw stem assembly [with threadlocker]
into valve. Tighten stem assembly
securely.
33 Tighten valve (33) to stem (26) until it
bottoms out.
34 Screw lower coupling (1) onto stem until
spring clip holes align.
35 Install spring clip (2).
Table 6
/
in OD
7
8
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