Page 70
DESCRIPTION AND OPERATION
Gear Train
The gear train (Figure 80) is designed to
accommodate the large diameter camshaft and
the addition of electronic unit pumps. An idler is
positioned between the crankshaft and camshaft
gears. As a result, the crankshaft and camshaft
rotate in the same direction, unlike the E7 engine.
In addition, the power steering pump and air
compressor rotate in a direction opposite that of
the E7. However, in order to maintain the same
pumping direction and lubrication oil flow for both
ASET™ and E7 engines, the oil pump drive gear
helix is reversed on the ASET™ engines.
80
Figure 80 — Gear Train
1. Fuel Pump Gear
2. Camshaft Gear
3. Idler Gear
4. Crankshaft Gear
5. Auxiliary Shaft Gear
5-111.bk Page 70 Monday, July 10, 2006 2:26 PM
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