Alemite 7730 Service-Handbuch - Seite 8

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SER 7730

Overhaul

NOTE: Refer to Figure 2-A and 2-B 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 sol-

vents such as methylene chloride or 1,1,1-trichlor-

ethane in this pump. An explosion can result

within an enclosed device capable of containing

pressure when aluminum and/or zinc-plated parts

in the pump come in contact with halogenated

hydrocarbon solvents.

Release all pressure within the system prior to

performing any overhaul procedure.

• Disconnect the air supply line from the pump

motor.

• Into an appropriate container, operate the

control valve to discharge remaining pressure

within the system.

Never point a control valve at any portion of your

body or another person. Accidental discharge of

pressure and/or material can result in injury.

Read each step of the instructions carefully. Make

sure a proper understanding is achieved before

proceeding.

Disassembly

Separate Pump Tube from Air Motor

1. Clamp the motor assembly in a vise.

2. Remove Nuts (8), Lockwashers (7), and Screws (6)

that secure Camlock Adapter (25) to Air Motor

Assembly (3).

• Remove the Camlock Adapter from the Air Motor

Assembly.

3. Remove O-Ring (24) from the Camlock Adapter.

4. Loosen Jam Nut (23) that secures the Pump Tube

assembly to the Air Motor Assembly.

Revision (8-01)

High-Pressure Bulk Grease Pump

CAUTION

Support the Pump Tube assembly during removal.

Damage to components can occur.

5. Unscrew Pump Tube (28) [with attached components]

from the Air Motor.

6. Pull on the Pump Tube to expose Coupling (26).

7. Remove upper Spring Clip (27) that secures the

Coupling to the air motor piston rod.

8. Unscrew the Coupling from the air motor piston rod.

• Rotate the entire Pump Tube assembly.

Pump Tube Upper Packing

9. Unscrew Adapter (2) from the air motor housing.

10. Unscrew Cap Screws (13) that secure Body (12) to the

Air Motor.

• Do not remove the Cap Screws from the Body.

11. Remove the Body from the Air Motor.

• Use the Cap Screws as levers.

12. Remove O-Rings (11), O-Ring (9), and O-Ring (10)

from the Body.

13. Position the Body on the bench with the larger

diameter facing upward.

14. Remove aluminum Gasket (21), Washer (22), and

additional Gasket (21) from the Body.

15. Remove Spacer (20), Washer (19), and Seal (18).

16. Remove Lantern Ring (17) with Seal (16), and

Spacer (15).

• Remove the Seal from the Lantern Ring.

17. Remove O-Ring (14) from the Body.

Pump Tube

18. Clamp the pump tube assembly at Adapter (44)

securely in a soft-jaw vise.

19. Remove lower Spring Clip (27) that secures

Piston (36) to Coupling (26).

• Unscrew the Coupling from the Piston.

20. Unscrew and remove Upper Pump Tube (28) from the

Adapter.

21. Remove Barrel Assembly (30) from the Piston.

22. Remove both aluminum Gaskets (29).

Alemite Corporation