Alemite 9968-A Servicehandleiding - Pagina 9

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Overhaul

NOTE

Refer to fig. 3, page 12 and

IPB 1, page 14 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

solvents such as methylene chloride or

1,1,1-trichloroethane in this pump

An explosion can result when aluminum

and/or zinc-plated parts in pump come

in contact with halogenated hydrocar-

bon solvents

Release all pressure within system

prior to performing any overhaul

procedure

• Disconnect air supply line from pump

motor

• Into an appropriate container, oper-

ate control valve to discharge

remaining pressure within system

Never point a control valve at any

portion of your body or another person

Accidental discharge of pressure and/or

fluid can result in injury

Read each step of instructions care-

fully Make sure a proper understanding

is achieved before proceeding

Disassembly

Separate air motor from

pump tube

1 Clamp pump assembly in a soft-jaw vise at

bung adapter (22) or body (8)

2 Remove cover (1a)

2.1 Pry and swing cover sideways away

from cylinder (→ SER 670782 for

details)

3 Remove screw (1b) from top cap

4 Remove nuts (1d) that secure body to air

motor assembly (1)

5 Remove carriage bolts (1c) from top cap

5.1 Remove keepers (9) from body

6 Remove the cap from the cylinder

CAUTION

Remove cylinder with care

Damage to quad-ring (6) and/or

o-ring (7) can occur

7 With a side-to-side motion, pull cylinder

from body and air piston (4)

8 Remove o-ring (7) from body

9 Remove bottom cap from body

Pump tube assembly

Tube assembly

Unscrew tube (21) from body

Step for model 9968 and 9968-m only:

Remove bung adapter from tube as

required

Remove o-ring (19) and back-up

ring (20) from tube

Air piston assembly

4 Remove screw (2) that secures air

piston (4) to rod (15)

4.1 Remove air piston from rod

Remove washer (3) quad-ring (6), and

o-ring (5) from air piston

Rod assembly

6 Pull rod assembly from bottom of body

7 Unscrew valve seat (18) from rod

7.1 Remove ball (17) and nylon piston (16)

Body assembly

8 Remove o-ring (7) from body

9 Remove washer (14), spacer (13) and seal

(12) from body

10 Remove bearing (11) and seal (10) from

body

Step for model 9968-M only:

11 Unscrew adapter (29) from body only when

necessary

11.1 Adapter is secured with threadlocker

Foot valve assembly

12 Unscrew foot valve (27) from tube (21)

13 Remove o-ring (26) from foot valve

14 Remove pin (28) from foot valve

15 Remove washer (23), spring (24), and ball

(25) from foot valve

Clean and inspect

NOTE

Use appropriate repair kit for replace-

ment parts Make sure all components

are included in kit before discarding

used parts

1 Clean all metal parts in cleaning solvent

Solvent should be environmentally safe

2 Inspect all parts for wear and/or damage

2.1 Replace as necessary

3 Inspect air piston (4) for fatigue cracks

3.1 Replace as necessary

4 Inspect nylon piston (16) and rod (15) closely

Use a magnifying glass to detect any

score marks on the rod

4.1 Replace as necessary

5 Closely inspect mating surfaces of all check

valve components for any imperfections

Ensure a smooth and clean contact is

obtained when assembled

Example: place ball (25) into

foot valve (27) Fill foot valve with solvent

Make sure no leakage occurs