TM 10-4320-309-14
TM 4320-14/1
5-3. ADJUST/REPAIR FUEL INJECTION NOZZLE
This task covers:
a) Adjust
b) Repair
INITIAL SETUP
Tools
Materials/Parts
Nozzle Tester and Injection Timing
Measurement Pipe (Item 27, Appendix B,
Section III)
Socket Set, 8 to 19 mm (Item 6,
Appendix B, Section III)
Tool Kit, General Mechanics (Item 2,
Appendix B, Section III)
Wrench, 17 mm (Item 14, Appendix B,
Section III)
Shop Equipment Automotive Maintenance
and Repair: Field Maintenance,
Common No. 2 (Item 4, Appendix B,
Section III)
None
Equipment
Condition
Para
3-16
3-16
3-20
4-16
Inlet air sound enclosure assembly
removed.
Outlet air sound enclosure assembly
removed.
Fuel injection pipe removed from
engine.
Fuel injection nozzle removed from
engine.
ADJUST:
a.
b.
c.
d.
e.
f.
Use nozzle tester to check injection starting pressure.
The injection starting pressure should be 2844 psig (200 kg/sq cm).
Nozzle injection starting pressure adjustment is accomplished by increasing or decreasing the number
of adjusting shims (7).
Adjustment by 0.039 inch (1.0 mm) results in a change in the injection starting pressure of about 284
psig.
Adjusting shims can be obtained in the following sizes.
0.004 inch (0.10 mm)
0.005 inch (0.15 mm)
0.015 inch (0.40 mm)
0.019 inch (0.50 mm)
0.024 inch (0.60 mm)
0.027 inch (0.70 mm)
0.031 inch (0.80 mm)
Standard adjusting shim thickness should be approximately 0.023-0.025 inch (0.60-0.65 mm).
REPAIR:
a.
Disassembly of Fuel Injection Nozzle
(1) Remove case nut (1).
(2) Remove fuel injection nozzle body and valve (2).
(3) Remove stop plate (4).
(4) Remove nozzle positioning pins (3) from nozzle body (2).
5-2
