TM-9-2815-224-34-P
ENGINE, DIESEL:8-CYLINDER TURBOCHARGED, DETROIT DIESEL CORPORATION MODEL 8V92TA
DIRECT SUPPORT AND GENERAL SUPPORT MAINTENACE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JANUARY 1988
TM-9-2815-224-34-P - Page 303 of 554
TM 9-2815-224-34&P
Fuel Injector Maintenance Instructions (Cont)
(33)
Put injector assembly (22) in injector tip gage and adjust dial to zero.
(34)
Rotate injector assembly (22) 360°. If total runout exceeds 0.008-in. (0.203 mm), do steps
(35)
through
(38).
If runout is less than 0.008-in., go to follow-on maintenance.
(35)
Remove injector assembly (22) from injector tip gage. Loosen injector nut (21), using injector nut
socket, and center spray tip (20).
CAUTION
Some injector nuts (21) and injector bodies (2) could have a blued or non-blued
finish. These parts are fully interchangeable, however. To avoid parts damage due
to overtightening, the correct torque values listed below must be used.
(a) Torque a non-blued injector nut (21) on a non-blued injector body (2) to 50
lb-ft (68 N•m).
(b) Torque a blued injector nut (21) on a blued injector body (2) to 80 lb-ft (108
N•m).
(c) Torque a non-blued injector nut (21) on a blued injector body (2) or a blued
injector nut (21) on a non-blued injector body (2) to 65 lb-ft (88 N•m).
(36)
Tighten injector nut (21).
(37)
Check spray tip again, following procedures in steps
(33)
and
(34).
(38)
Replace injector nut (21) if spray tip (20) cannot be positioned correctly.
f.
Follow-on Maintenance.
Test fuel injector (para 12-4).
END OF TASK
12-4.
FUEL INJECTOR TESTING.
This task covers:
a. Set-Up Injector Test Kit
b. Testing
c. Follow-on Maintenance
INITIAL SETUP
Models
All
Test Equipment
None
Special Tools
Rack tester kit J22396
Spray tip gage J9462-02
Injector test kit J23010 or J23010-A
Special Environmental Conditions
Work in clean, well-ventilated work area.
General Safety Instructions
Fuel and test oil are very flammable and
can explode easily. To avoid serious injury
or death, keep fuel away from open fire and
keep fire extinguisher within easy reach
when working with fuel.
Supplies
Oil, test, fuel injector, Item 49, Appendix C
Personnel Required
MOS 63W, Vehicle wheel repairer
References
None
Equipment Condition
TM or Para
Condition Description
Fuel injector on clean
work surface.
When working with fuel, post signs that
read “NO SMOKING WITHIN 50 FEET.”
When testing or adjusting fuel injectors, do
not place hands or arms in front of injector
spray tip.
The fuel spray from an injector has
sufficient penetrating power to puncture
the flesh and destroy tissue. Should the fuel
enter the blood stream, it can cause blood
poisoning.
Level of Maintenance
General Support
Change 2
12-21
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