Idler gear marks may not be in mesh with other three gears due to different speed of rotation
of idler gear.
Align timing marks on crankshaft gear (Figure 1, Item 6), camshaft gear (Figure 1, Item 7), fuel injector pump
gear (Figure 1, Item 5), and idler gear (Figure 1, Item 4).
Remove three bolts (Figure 1, Item 2) and retaining plate (Figure 1, Item 3) from idler gear (Figure 1, Item 4).
Use puller to remove idler gear.
Remove idler gear (Figure 1, Item 4) from front of cylinder block (Figure 1, Item 1).
Figure 1. Idler Gear and Hub Removal.
Do not turn crankshaft while idler gear is off engine.
· Drive gear of fuel injection pump may turn counterclockwise when idler gear is removed.
Drive gear of fuel injection pump may have to be turned clockwise to align timing marks
before installing idler gear.
· Remove bushings with puller or roller off front face of one bushing and remove with driver
If necessary, remove two-piece bushings (Figure 2, Item 2) from idler gear (Figure 2, Item 1).