5-101.bk Page 22 Friday, March 17, 2006 11:05 AM
200 BENCH PROCEDURES is being pressed on. As the gear seats, allow the pressure to climb to, but not exceed, 10 tons (9.1 MT). This will ensure that gear is seated firmly on shaft. The gear should be flush with the end of the shaft when fully seated.
Figure 5-21 — Camshaft Gear Installation
9. Using a suitable press cup, press the gear onto the shaft until it is fully seated. The pressure gauge on the press should read approximately 5 tons (4.54 MT) as the gear is being pressed on. As the gear seats, allow the pressure to climb to, but not exceed, 10 tons (9.1 MT). This will ensure that gear is seated firmly on shaft. 10. When gear is properly seated, clearance between rear face of gear and thrust washer should be between 0.003–0.012 inch (0.076–0.305 mm). 11. Thoroughly clean and degrease injection pump driving gear with a suitable contact cleaner that dries rapidly and leaves no residue. 12. Prepare the gear bore surface with Locquic™ Primer T, or equivalent. 13. Apply a bead of Loctite 609, or equivalent, to the gear bore. 14. Using a clean brush, spread Loctite 609 evenly on the entire surface of the gear bore. 15. Position gear onto camshaft. 16. Using a suitable press cup, press the gear onto the shaft until it is fully seated. The pressure gauge on the press should read approximately 5 tons (4.54 MT) as the gear
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Figure 5-22 — Fuel Injection Pump Driving Gear Installation
[213 EV] CYLINDER HEADS Description Refer to Figure 5-23. The cylinder heads featured on 1991 and later E7 engines incorporate internal design modifications that increase the swirl level of combustion air. To achieve the increase in air motion required, it was necessary to redesign the inlet port. Increased air motion, in conjunction with the eight-hole Valve Covering Orifice (VCO) nozzle tips, provides proper air/fuel atomization in the deeper bowl of the piston crown.
1991 and later E7 cylinder heads are NOT interchangeable with 1989/1990 E7 cylinder heads.
