Air Filter - Inspection and Replacement

Hot surfaces. Risk of burn. Compressor heads are exposed when filter cover is removed. Allow compressor

to cool prior to servicing.

Keep the air filter clean at all times. Do not operate the air compressor with the air filter removed.

A dirty air filter will not allow the compressor pump to operate at full capacity. Before using the compressor pump, check the air filter to make sure it is clean and in place.

If it is dirty, replace it with a new filter.

1.Using a pair of needle nose pliers or a screwdriver pull or pry out the old filter and carefully clean the filter area.

2.Push the new air filter in place. Refer to the "Repair Parts" for the correct part number.

IMPORTANT: Do not operate the compressor with the air filter removed.

3.Place new air filter into filter cover. Refer to the "Repair Parts" for the correct part number.

4.Replace air filter cover and lock into place.

Motor Pulley/Flywheel Alignment

NOTE: Once the motor pulley has been moved from its factory set location, the grooves of the flywheel and pulley must be aligned to within 1/16" to prevent excessive belt wear.

The air compressor flywheel and motor pulley must be in-line (in the same plane) within 1/16" to assure belt retention within flywheel belt grooves. To check alignment, perform the following steps:

1.Unplug air compressor from power source.

2.Remove belt guard

3.Place a straightedge against the outside of the flywheel and the motor drive pulley.

4.Measure the distance between the edge of the belt and the straightedge at points A1 and A2 in

figure. The difference between measurements should be no more than 1/16".

5.If the difference is greater or less than 1/16" loosen the set screw holding the motor drive pulley to the shaft and adjust the pulley’s position on the shaft until the A1 and A2 measurements are within 1/16" of each other.

6.Tighten the motor drive pulley set screw to 70-80 in.-lbs.

D26269

18-ENG

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Delta 66-750 instruction manual Air Filter Inspection and Replacement, Motor Pulley/Flywheel Alignment