Adjustment. - TM-9-2320-279-20-10583

TM 9-2320-279-20-1

Fuel System Maintenance Instructions (Cont)

e. Adjustment.

NOTE

There are two models of pressure regulators. Model A uses a screw to lock knob in place.

Model B has a push-to-lock knob. Do step (1) for Model A. Do step (1.1) for Model B.

(1) Loosen screw (1) on pressure regulator (2).

(1.1) Pull outward on knob (5) of pressure regulator (2).

WARNING

Stay clear of engine fan belts. Do not wear loose clothing, long sleeves or jewelry. Stay clear

of hot exhaust manifold. Failure to do so could cause severe injury or death.

(2)

Connect batteries (para 7-91).

(3)

Start engine (TM 9-2320-279-10).

(4)

Engage PTO switch (TM 9-2320-279-10).

(5)

Activate high idle at ENGINE HIGH IDLE box (3 or 44) (TM 9-2320-354-10).

NOTE

After each turn of knob, wait a few seconds for engine to catch up to adjustment.

Adjustment should be as close to 900 rpm as possible.

(6) Turn knob (5) slowly until rpms read between 800 and 900.

NOTE

Do step (7) for Model A. Do step (7.1) for Model B.

(7) Tighten screw (1) on pressure regulator (2).

(7.1) Push knob (5) in to lock setting of pressure regulator (2).

(8) Check rpm setting. If over 900 rpm, repeat steps (1) through (7.1).

(9) Shut off engine (TM 9-2320-279-10).

Follow-on Maintenance.

(1) Install fan (para 6-11).

(2) Start engine and build up air pressure (TM 9-2320-279-10).

(3) Check for air leaks.

(4) Shut off engine (TM 9-2320-279-10).

(5) Install engine left side panel (TM 9-2320-279-10).

(6) Close engine side panel (TM 9-2320-279-10).

END OF TASK

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