tests - TM-10-3930-242-340069

TM 10-3930-242-34

d. Disassembly. Refer to figures 3-23, 3-24,

tests. Remove plunger from injector as follows:

(a) Support the injector, right side up in

a n d 3-25 and disassemble the fuel injector in

h o l d i n g fixture.

n u m e r i c a l sequence.

e. Cleaning and Inspection.

(b) Compress follower spring; then using

(1) Wash all parts with clean fuel oil and dry

a screwdriver raise spring above stop spring

w i t h clean, dry compressed air.

and withdraw the pin (fig. 3-21), Release spring

(2) Clean out all passages, drilled holes and

gradually.

s l o t s in the injector.

(c) Remove the injector from holding fix-

CAUTION

t u r e and turn injector up side down, to prevent

Care must be exercised when inserting

entry of dirt in injector, and catch spring and

reamer in spray tip to avoid contact in

plunger in hand.

needle valve seat in tip.

(d) Inspect plunger (fig. 3-22). If chipped

( 3 ) Clean the spray tip with reamer (fig

or damaged, replace the plunger and bushing. If

3 - 2 6 ) . Turn reamer in a clockwise direction to

the plunger is in good condition, reinstall

r e m o v e carbon deposits.

p l u n g e r and follower.

Figure 3-21. Fuel injector follower stop pin, removal and installation.