ARMY TM 92815-252-24
AIR FORCE TO 38G1-92-2
Keep body clear of test spray. Fluid can be injected into blood-stream causing blood poisoning
Open valve on fuel injector tester and operate lever at one stroke per second.
Spray should start at 3480 psi (23,995 kPa) for used injector and 3552 to 3697 psi (24,491 to 25,491 kPa) for
new injector and a well atomized spray pattern should be visible.
Injector leakoff rate is 10 to 40 seconds between 2205 and 1470 psi (15,203 and 10,136 kPa).
Remove all covers installed during removal.
Ensure seating in cylinder head is clean and smooth.
If injector sealing washer (9, FIGURE 3-13) has been used more than once it will become
compressed and may adversely affect combustion. It is recommended that new injector sealing
washers are installed on assembly. Ensure that two washers are not installed to an injector.
Lightly smear a very small amount of general purpose grease (630AA) to one side of new injector sealing washer
(9). Place one washer only over each injector nozzle greased side first.
Install injector (8).
Install clamp (7) and finger tighten bolt (6).
Install a new preformed packing (2) into recess on cylinder head cover.
Install injector pipe (3 or 4) and finger tighten nuts.
Install cylinder head cover nut retaining injector pipe clip and tighten to 78 in-lbs (8.8 Nm).
Tighten injector clamp bolt (6) to 186 in-lbs (21.0 Nm).
Tighten injector pipe (3 or 4) nuts to 21.0 in-lbs (28.5 Nm).
Install injector fuel return hose (5).
FUEL INJECTOR PIPES AND FUEL RETURN LINE.
Disconnect hose (10, FIGURE 3-13) from union (11).
Remove union (11) and washer (12) from end of fuel supply hose.
Disconnect hose (10) from tee fitting (13). Remove tiedown straps (14) and remove hose (10). Discard tiedown
Remove two hoses (5) from fuel injectors (8) and tee fittings (13).
Remove tee fittings (13) from hose (15); remove hose (15).
Disconnect hose (16) from tee fitting (13); remove hose (16).
Loosen nuts on fuel injector pipes (3 and 4) at fuel injection pump and fuel injector (8).
Remove cylinder head cover nuts (1) securing fuel injector pipes (3 and 4) clips; remove pipes (3 and 4). If
damaged, replace preformed packing (2).
Cap all openings.