SHOP MANUAL

after cleaning to neutralize the solvent and prevent etching of polished sur- Clean nozzle spray hole from inside using a pointed hardwood stick or wood splinter as shown in Fig. 29. Scrape all carbon from pressure chamber using hooked scraper as shown in Fig. 30. Clean valve seat using brass scraper as shown in Fig. 31, then polish seat using wood polishing stick and mutton tallow Back flush nozzle using reverse flusher adapter. Reclean all parts by rin- sing thoroughly in clean diesel fuel or calibrating oil and assemble while parts are wet. Make sure adjusting shim pack is intact. Tighten nozzle retaining nut (10-Fig. 28) to a torque of 58.8-78.4 Nm (43-58 ft.-lbs.). Do not overtighten, distortion may cause valve to stick and Fig. 33~ Exploded view of a typical air filter assembly. no amount of overtightening can stop a leak caused by scratches or dirt. Retest assembled injector as pr

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