TESTING - TM-10-3930-638-24-P0906

TM 10-3930-638-24&P

4-3. FUEL SYSTEM MAINTENANCE (cont)

b. Fuel Injection Pump (cont).

REMARKS

ITEM

ACTION

LOCATION

STEP

TESTING

NOTE

Test bench must use calibrating nozzles type DN12SD12 (open-

ing pressure 2500 psi) and injection lines shall be 3/32 inch ID

by 20 inches long; holder BKB50SD and 0.5 MM plate and lines

1/16 inch ID by 25 inches long; Mobil Velocite No. 3 calibrating

oil and calibrating oil temperature at 110-115 degrees F. Test

stand coupling should be of the self-aligning zero backlash type.

Mount and drive the pump according to the test bench manu-

facturer's instructions.

a. Plug (91)

Remove

Transfer pump

Install pump

Use two wrenches so pump outlet fitting

b. Sleeve (92)

(end plate

inlet

(88))

does not move at the same time. Install

connector

transfer pressure gauge adapter P/N

21900, then a shutoff valve to isolate

gauge when not in use. Connect pressure

gauge to adapter P/N 21900

Housing

a. Four screws

Remove

Install P/N 19918 advance windows in

place of timing line covers

(124)

Remove

b. Two timing

line covers (125)

NOTE

Pump rotation is counterclockwise as viewed fromdrive shaft end

of pump,

Connect a +24 Vdc battery and switch to solenoid terminals at

top of governor control cover (22)

c. Switch connected

Place in on

to battery

position

Move to full

d. Pump throttle

When transfer pump is primed, bleed fuel

load position

shaft

for several seconds by loosening injection

line nuts at fuel nozzles; then tighten nuts

assembly (37)

securely

NOTE

1 to 3 PSI supply pressure is required at pump inlet.

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