Maintenance and repair
Disassembly
Separate air motor from
pump tube
1
Clamp pump assembly vertically in a vise
at bung adapter (
21
)
2
Remove screws (
44
), lock washers (
46
),
and nuts (
47
) that secure air motor
assembly to pump tube assembly
3
Lift motor upward to expose upper cou-
pling (
1
) while placing a wood block onto
surface of upper mounting (
8
) (
† Fig. 3
,
)
4
Lower air motor onto wood block
5
Remove upper spring clip (
2
) that
secures air motor piston to coupling
6
Rotate coupling until air motor piston
is free
7
Remove air motor assembly
NOTE
Refer to
) for
component identification on all
overhaul procedures
WARNING
Prior to performing any maintenance,
safety precautions must be observed
Failure to comply may lead to per-
sonal injury
WARNING
Do not use halogenated hydrocarbon
solvents such as methylene chloride or
1,1,1-trichloroethane in this pump An
explosion can result within an enclosed
device capable of containing pressure
when aluminum and/or zinc plated
parts in pump come in contact with
halogenated hydrocarbon solvents
Failure to comply may lead to death or
serious personal injury
WARNING
Release all pressure within system prior
to performing any overhaul procedure
• Disconnect air supply line from
pump motor
• Into an appropriate container, operate
control valve to discharge remaining
pressure within system
Failure to comply may lead to per-
sonal injury
WARNING
Do not point a control valve at any por-
tion of body or another person Acciden-
tal discharge of pressure and/or mate-
rial can occur
Failure to comply may lead to death or
serious personal injury
WARNING
Read each step of instructions carefully
Make sure proper understanding is
achieved before proceeding
Failure to comply may lead to death or
serious personal injury
Overhaul
Access to body packing
8
Remove lower spring clip (
2
) that secures
rod (
3
) to coupling
9
Remove coupling from rod
10
Remove packing screw (
4
) from plate (
7
)
11
Clamp pump assembly horizontally in a
vise (material outlet upward) at
body (
11
)
12
Unscrew and remove extension cylinder
(
23
) with attached components, from
body using a strap wrench
13
Remove o-ring (
22
) from extension
cylinder
Body packing
14
Remove screw (
19
) from body Access is
through body’s outlet
15
From bottom of body remove spacer
(
20
), male rings (
17
), V-packings (
16
),
female rings (
15
), washers (
14
), and lan-
tern ring (
18
)
7
Содержание 7886-A5
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