DETROIT DIESEL 53
TROUBLE SHOOTING ( Needle Valve Injection ) 2.0
TROUBLE SHOOTING CHARTS (Needle Valve Injectors)
SUGGESTED REMEDY
1.
Replace the needle valve and tip assembly.
2.
Replace the needle valve and tip assembly.
3.
Replace the spring seat.
4.
Replace the valve spring.
5.
Disassemble the injector and clean the parts.
6.
Remove the carbon in the tip with tip reamer J 9464 which is especially designed and ground for this
purpose.
7.
Check the hole size of the spray tip orifices. Then, using tool J 4298-1 with the proper size wire, clean
the orifices.
August, 1972 SEC. 2.0
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