DeVillbiss Air Power Company SP-100-F Troubleshooting Guide download pdf (Page 17)

DRIVE BELT DOWNWARD FORCE

COMPRESSOR

FLYWHEEL

Figure 8. Checking Belt Tension

Holdthe belttension untilthe engine mount-

ing hardwarecan betightened.

Ensure that the belts are centered on the

enginepulleyand compressorflywheel.

NOTE

Once the engine has been moved

from its factory set location the engine

pulley must align to within 1/16 inch

to the compressor flywheel.

Torqueengine mountingboltsto 20 +3

foot pounds.

Reinstallthe belt guard.

Connect the spark plug wire.

On compressors equipped with standardV-belts,

each beltshould deflect 1/4"at the midway point

between the engine pulleyand flywheel when a

downwardforceof 4 pounds,orequivalentfinger

pressure, isapplied at the midway point. Refer to

Figure8.

SERVICE INSTRUCTIONS

Moving parts, unexpected engine start-up and compressed air can cause serious injury.

Always disconnect the spark plug wire and relieve pressure from the air tank before

performing any of these service procedures. Never operate the air compressor with the

belt guard removed.

REPLACING DRIVE BELT

The gasolineengine is mounted to the tank assem-

blysaddle. By looseningengine mountinghardware,

the engine can be moved to allow foreasy removal

of the belt. Replace the drive beltas follows:

1. Disconnect the spark plug wire and drain all air

pressure from the tank.

2. Removethe beltguard.

3. Loosenthe enginemounting hardwareand

slide the enginetoward the compressor.

Remove the beltand replacewitha new one.

On compressor outfits with matched V-

belts, both belts must be replaced at the same

time.

NOTE

The belts should be centered on

the flywheel and engine pulley. Once

the engine has been moved from its

factory set location, the engine

pulley mustalign to within 1/16

inch of the flywheel.

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DeVillbiss Air Power Company SP-100-F Troubleshooting Guide Page 17

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