13
Engine Mechanics
Drive Module
The drive module uses helical gears to drive the
camshafts, coolant pump, alternator, power
steering pump and air conditioning compressor.
The helical gears are mounted in two carrier
plates made of cast iron to provide uniform
expansion through the entire temperature
operating range of the engine.
The drive module is connected by three bolts to
the bearing tunnel formed by the upper and
lower cast iron end brackets.
The gears have a helix angle of 15°; with two
tooth mesh. The two tooth mesh provides a
larger bearing surface that is stronger and
quieter than a spur gear mesh.
Oil Supply Line
Carrier Plate
Carrier Plate
Carrier Plate
Carrier Plate
303_004
303_102
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