Fuel Injection Pump Adjustments (cont).

TM 10-3930-638-24&P

3-5. ENGINE MAINTENANCE (cont)

a. Engine Tune-up (cont).

(3) Fuel Injection Pump Adjustments (cont).

STEP

LOCATION

ITEM

ACTION

REMARKS

ENGINE IDLE SPEED ADJUSTMENT (cont)

NOTE

(cont)

Tachometer drive shaft operates at one half engine speed. Double

tachometer reading to obtain engine RPM.

c. Engine idle speed

Measure

Repeat step b above to recheck idle speed.

If engine idle speed is 825-850 RPM,

proceed to step 3. If idle speed is not

correct, proceed to step d.

d. Idle speed screw

Check position

With accelerator pedal at idle position,

check if idle speed screw is against the

injection pump boss. M screw is not

against pump boss, adjust accelerator

cable ball joint (para 2-15i). If idle screw

is against pump boss, proceed-to step e

below

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