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).

REMARKS

ACTION

ITEM

LOCATION

STEP

INJECTION PUMP -- TIMING ADJUSTMENT (cont)

(cont)

NOTE

Do not use calibration marks in the following step. Use marks

in injection pump timing window only.

Until timing marks in timing window are

Rotate

e. Injection pump

in line

NOTE

To advance timing, rotate top of pump away from engine. To

retard timing, rotate top of pump toward engine.

Torque to 35-42 pounds foot torque

f. Three pump mounting Tighten

nuts

Repeat steps a and c above until timing

g. Injection pump timing Recheck

marks are in line

On injection pump

Position

h. Timing window cover

and new gasket

Until timing window cover is securely

Install and

i. Cover screws

mounted

tighten

ENGINE IDLE SPEED ADJUSTMENT

Start engine and operate until normal

Warm-up

a. Engine

Fuel injection

operating temperature is reached

pump

With engine idling, press conical tip

Position

b. Tachometer

against tachometer drive shaft on engine

until tachometer hand stops moving,

then note reading

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