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SKF 9918-A Serie Guía De Servicio página 11

Bomba de transferencia de baja presión

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15 Screw valve seat (24) with threadlocker
into rod and plug assembly.
15.1 Follow thread sealant
manufacturer's recommendations.
NOTE
Install rod and plug assembly into body
with a twisting motion. Use care not to
damage seals.
16 Install rod assembly into bottom of body.
16.1 Allow rod assembly to protrude
approximately 2 in (5 cm) from top
of body.
Tube
17 Screw tube (26) into body.
17.1 Use care passing block-v packing.
17.2 Do not tighten tube at this time.
18 Screw foot valve body assembly
into tube.
18.1 Tighten foot valve body assembly
securely to tube and tube to body.
Air piston
19 Install quad-ring (9) onto air piston (7).
20 Install and seat o-ring (8) into bottom of
air piston.
21 Place air piston (observe THIS SIDE UP)
on top of rod and plug assembly.
22 Install screw (5) and washer (6) that
secures air piston to rod and
plug assembly.
22.1 Tighten screw to
15 ft lbf (20.7 Nm).
Attach air motor to
pump tube
23 Clamp pump at flats of body (11) securely
in a soft-jaw vise.
24 Install bottom cap onto body.
25 Install o-ring (10) onto upper groove
of body.
NOTE
Install cylinder with care. Damage to
quad-ring (9) and/or o-ring (10)
can occur.
NOTE
Angle cylinder onto quad-ring (9).
26 Install cylinder over body's o-ring and
seat properly onto bottom cap.
27 Install top cap onto cylinder.
27.1 Use care passing o-ring.
28 Install keeper (12) into groove of body.
28.1 Make sure hole aligns with bolt (1).
29 Install one carriage bolt through air
motor and through keeper.
30 Install flange nut (13).
30.1 Do not tighten flange nut at
this time.
31 Repeat procedural steps 28 through 30
for additional keepers and carriage bolts.
NOTE
Do not overtighten flange nuts (13).
Component damage can occur.
32 Torque each flange nut in an alternate
pattern from 60-70 in-lbf (6.8-7.9 Nm).
33 Install screw (2) into top cap.
33.1 Tighten screw to
50 in-lbf (5.6 Nm)
34 Snap cover (4) onto cylinder.
11

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