TM 5-1940-277-34
INJECTOR TEST AND REPAIR INSTRUCTIONS
(Continued)
LOCATION
ITEM
ACTION
REMARKS
1.
Injector tester
a.
Nozzle
Connect to
Use testing
holder (1)
testing machine.
machine.
b.
Injector cap
Loosen.
Use 1 in wrench.
nut (2)
c.
Spring
a.
Pump tester
Adjust by placing
adjusting
up to pres-
screwdriver down
screw (4)
sure of 2,705
through leak-off
psig (184.1
drilling in cap
atm).
nut (2). Open
valve on tester
one-half turn
b.
Rotate spring
from closed
adjusting
position. Pump
screw counter-
tester as neces-
clockwise
sary to maintain
until nozzle
constant pressure
sprays.
c.
Hold spring
adjusting
screw and
tighten injec-
tor cap nut
(2) securely.
d.
Needle valve
Back Leakage Test:
(10)
o Pump tester to
2,190 psig
(149 atm)
o Fully open
tester valve.
2-263
