Workshop Manual S3.8 Engine A030K288 (Issue 2) 01-2010 3 Immerse nozzle needle and nozzle body in Mark injection pump by the letter “Z” behind the pump designation after the work has been carried out. clean diesel oil and check slide ability by means of drop test. DROP TEST Keep nozzle body vertical, pull out the needle to one- third of its length. It must drop back on its seat by its own weight slowly. If the needle does not slide in body, smear a little mutton allow on it and lap the needle in nozzle body. Do lapping in back and forth and rotary movement of needle in nozzle body. While doing so, the nozzle needle seat should not touch the seat in nozzle body.
Wash in diesel and recheck by drop test. 4. Assemble nozzle in the sequence as shown into the nozzle holder taking care to match the locating pins on intermediate disc and screw on pressure screw. Fig. 25 5. Place nozzle holder into holder 403 589 00 31 00. Fig. 25 6. Tighten pressure nut with special wrench 000 589 01 13 00 to specified torque. Fig. 26. Fig. 26 Fig. 27 36