DETROIT DIESEL 53
TROUBLE SHOOTING ( Needle Valve Injection ) 2.0
SUGGESTED REMEDY
1.
Lap the injector body.
2.
3,4,5 and 6. Replace the needle valve and spray tip assembly.
7.
Replace the valve spring.
8.
Replace the valve spring seat.
9.
Replace the seal ring.
10.
Install new body plugs.
11.
Replace the filter cap gaskets and tighten the filter caps to 65-75 Ibs-ft torque.
12.
Clean up the sealing surfaces or replace the filter caps, if necessary. Replace the filter if a cap is
replaced.
13. Disassemble the injector and clean the parts.
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