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TM10-4320-316-14
5-8.
FUEL INJECTOR VALVE ASSEMBLY REPLACEMENT.
This Task Covers:
a.
Removal
b.
Test
c.
Installation
Initial Setup:
Tools Required
Tool Kit, General Mechanic's (Appendix B, item 1)
Test Stand, Injector (Appendix B, Item 3)
Torque Wrench Common 0-175 in-lb (Appendix B, Item 3)
Material's Required
Cloth, Lint-free (Appendix E, Item 1)
Hex Head Bolt, 3/8 x 4 inch UNC (Appendix B, Item 6)
Equipment Condition
DED pump assembly shut down and cool.
Inlet enclosure removed (see paragraph 4-22).
a.
Removal. (Refer to Figure 5-2).
CAUTION
Do not touch tip of fuel injection nozzle as damage to equipment can occur.
(1)
Remove clamp (1) and fuel return line (2) from fuel injector valve assembly.
(2)
Remove two hex head nuts (3), retaining plate (4), and the strap for the valve cover rubber plug.
NOTE
If the nozzle is tight, gently pry nozzle using a small pry bar. Be careful not to pry
on the fuel return hose hub.
(3)
Carefully remove fuel injection nozzle (5). Wrap it in clean cloth to protect the nozzle tip. Do not
place nozzle tip directly on any dirty surface without protection.
(4)
If nozzle gasket (6) and spacer (7) are not attached to nozzle at removal, screw a 3/8 x 4 inch UNC
hex head bolt into nozzle gasket, then remove stud bolt. The gasket and spacer should come out and be discarded.
WARNING
Death or serious injury could occur if fuel is not handled properly. Use in a well-
ventilated area away from open flame, arcing equipment, ignition sources,
heaters, or excessive heat. Always store fuel in properly marked containers. DO
NOT SMOKE.
5-6
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