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II. Engine Component Description
Drive Gear Timing (continued)
In addition to ensuring proper gear timing, proper gear lubrication is achieved only if the oiling
bushing and oiling jet are installed properly and functioning:
The central timing gear shaft bushing placement
is critical. The oiling hole must be placed in the
12 oclock position for proper lubrication.
With the central timing gear installed, an oiling jet provides additional lubrication to the idler and
injection pump gears mesh areas.
The idler gear (that meshes with the injection
pump gear) has an oil passage drilled through the
teeth to allow the oil from the center of the gear to
flow outwards and properly lubricate the mesh
area.
