AIR COMPRESSOR DRIVEBELT MAINTENANCE - continued

TM 9-2320-361-24-1

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AIR COMPRESSOR DRIVEBELT MAINTENANCE (Contd)

REMOVAL

Remove two screws (2) and lockwashers (1) from adjustable pulley flange (4). Discard lockwashers (1).

Using pulley wrench and holding pulley flange (3), turn adjustable pulley flange (4)

counterclockwise to loosen drivebelt (5).

Remove drivebelt (5) from crankshaft pulley (6), pulley flange (3), and adjustable pulley flange (4).

INSTALLATION

Place drivebelt (5) between pulley flange (3) and adjustable pulley flange (4) and on crankshaft

pulley (7).

Holding drivebelt (5) up, turn adjustable pulley flange (4) clockwise as far as possible by hand.

Turn adjustable pulley flange (4) on pulley flange (3) until there is no slack in drivebelt (5).

ADJUSTMENT

WARNING

Ensure fuel shutoff valve is off before turning over engine.

Failure to do this may result in injury to personnel.

Turn engine several revolutions, by turning crankshaft bolt (7), to equalize tension on both sides of

drivebelt (5).

Holding straight edge along drivebelt (5), use 6-inch ruler to push in center of drivebelt (5).

Correct drivebelt tension is 0.75 in. (1.905 cm) with firm finger grip on 6-inch ruler.

Using pulley wrench and holding pulley flange (3), adjust drivebelt (5) tension:

a. Turn adjustable pulley flange (4) counterclockwise to loosen tension on drivebelt (5).

b. Turn adjustable pulley flange (4) clockwise to increase tension on drivebelt (5).

When drivebelt (5) tension is correct, install two new lockwashers (1) and screws (2) in adjustable

pulley flange (4).

Install radiator (WP 0077 00).

Install alternator belts (WP 0084 00).

Connect battery ground cable (WP 0126 00).

Start engine (TM 9-2320-361-10), build up air pressure, and check air compressor operation.

Lower and secure hood (TM 9-2320-361-10).

10.

Release parking brake and remove wheel chocks (TM 9-2320-361-10).

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