- Denotes parts in Service Kit.

*When corresponding or ordering spare parts, please give complete model and serial numbers.

CAUTION: Never lubricate this oil-less air pump The Carbon vanes and grease packed motor bearings require no oil The rotor is held in place with Loctite adhesive DO NOT REMOVE THE ROTOR.

STARTING: If the motor fails to start, shut the motor off and unplug Check the motor ahead nameplate for proper voltage and the front side of this sheet for wiring in relay It anything appears to he wrong with the motor return the complete pump and motor assembly shell to an authorized service facility.

WARNING - THE MOTOR MAY BE THERMALLY PROTECTED AND W ILL RESTART WHEN THE PROTECTOR RESETS. ALWAYS DISCONNECT POWER SOURCE BEFORE SERVICING PERSONAL INJURY AND/OR PROPERTY DAMAGE WILL RESULT.

FLUSHING: Should excessive dirt, foreign particles, moisture or oil be permitted to enter the pump the vanes will act sluggish or even break. Flushing of the pump with Gast Flushing Solvent, should take care of this condition In order to flush a pump, remove the filter and Muffler and Introduce several teaspoons full of solvent into the pump through the intake WHILE THE PUMP IS RUNNING. Repeat the flushing procedure if it doe,, not remedy the situation remove the end plate for further examination. Flush unit in a well-ventilated area. Eye protection is recommended. WARNING - Keep face away from exhaust port and do not flush unit with flammable solvent* Personal injury and or property damage will result

FILTERS: Dirty filters restrict air flow and if not corrected could lead to possible motor overloading and early pump failure Check filters periodically and clean when necessary by removing felts from the filter and washing in a solvent*. Dry with compressed air and replace.

DISASSEMBLY: Remove the three screws which attach retainer plate to body. Now remove the retainer plate and carbon wear plate and you have access to the vanes. Use compressed air to clean out the pump chamber especially if the vanes are broken. The carbon wear plates have two usable sides. When one side is worn, simply flip it over but use it on the same end of the pump. Do Not REMOVE THE ROTOR since it is held in place by Loctite and should only be serviced by an authorized service facility. To reset clearance between top of rotor and top of the body, just LOOSEN the screws that attach the body to electric motor. DO NOT REMOVE BODY of pump because an exact factory determined body spacer gasket provides necessary clearance. After the screws are loosened place a .001" feeler gauge between the top of the rotor and the body, holding the body in position while the body bolts are tightened Withdraw the feeler gauge and rotate the rotor to be sure all points clear the bore. To prevent misalignment and damage to the pump DO NOT LOOSEN OR ADJUST MOTOR THRU BOLTS.

REASSEMBLY: Simply place carbon plate and retainer plate in position add and tighten the three (3) end plate screws. Should the pump still fail to produce proper vacuum or pressure, send to authorized service center for repairs.

"Recommended Solvent: Gast Flushing Solvent part #AH255 DO NOT USE KEROSENE or any other flammable solvents Personal injury and or Property damage will result.

Authorized service facilities are located at:

Gast Manufacturing Corp.

2550 Meadowbrook Road

Benton Harbor, MI 49022

616/926-6171 FAX 616-925-8288