TM 9-2320-365-20-3
4-7. ORIFICE TUBE ASSEMBLY REPLACEMENT
This task covers:
a. Removal
b. Installation
c. Follow-On Maintenance
INITIAL SETUP
Equipment Conditions
Engine shut down (TM 9-2320-365-10).
Cab raised (TM 9-2320-365-10).
Fuel pressure regulating valve removed
(para 4-3).
Fuel ratio control tube removed (para 4-6).
Tools and Special Tools
Tool Kit, Genl Mech (Item 44, Appendix C)
Wrench, Torque, 0-175 lb-ft (Item 57, Appendix C)
Materials/Parts
Packing, Preformed (Item 186, Appendix G)
WARNING
Diesel fuel is flammable. If fuel is spilled,
clean it up immediately. Failure to comply
may result in serious injury or death to
personnel.
a. Removal.
(1) Remove two screws (1) and washers (2) from orifice
tube assembly (3).
(2) Remove screw (4), orifice tube assembly (3), and
preformed packing (5) from cylinder head (6). Discard
preformed packing.
b. Installation.
(1) Position preformed packing (5) on cylinder head (6).
(2) Position orifice tube assembly (3) on cylinder head (6)
with screw (4).
(3) Position two washers (2) and screws (1) in orifice tube
assembly (3).
(4) Tighten screw (4) to 15-25 lb-ft (20-34 N·m).
(5) Tighten two screws (1) to 33-47 lb-ft (45-64 N·m).
4-40
