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TM 10-3930-669-34
2-11. ENGINE SYSTEM TROUBLESHOOTING (CONT).
4.
EXCESSIVE BLACK OR GREY SMOKE.
INITIAL SETUP
Tools and Special Tools
Materials/Parts
Tool Kit, General Mechanic’s: Automotive
Cap and Plug Set (Item 5, Appendix B)
(Item 1, Appendix E)
Tag, Identification (Item 21, Appendix B)
Pressure Test Kit (Item 5, Appendix E)
STE/ICE-R (Optional) (Item 14, Appendix E)
References
Gauge, Tester, Injection Pump
TM 10-3930-669-10
(Item 5, Appendix E)
TM 10-3930-669-20
Retainer (Item 13, Appendix E)
Equipment Condition
Personnel Required
Engine OFF (TM 10-3930-669-10)
Two
MAIN POWER switch OFF (TM 10-3930-669-10)
Parking brake applied (TM 10-3930-669-10)
Wheels chocked (TM 10-3930-669-10)
KNOWN INFO
TEST OPTIONS
Nothing.
Injection pump pressure test.
POSSIBLE PROBLEMS
REASON FOR QUESTION
Injection pump faulty.
If injection pump is faulty,
Injection pump timing incorrect.
engine will exhaust black or 4
Low engine compression.
grey smoke excessively.
Valves or valve springs faulty.
Piston ring(s) faulty.
2-38
Page 2-39.
(Para 4-5).
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