Figure 9-18. Camshaft Bushing Driver Set, ST-1 228
In the following steps, be sure the oil holes in the cylinder block bore and bushings are
aligned. Severe engine damage will result if the oil holes are blocked.
With the camshaft bushing driver set ST-1 228 in place as in step b(5), above, install new camshaft
bushings (28, Figure 9-15) starting at the rear of the cylinder block and working toward the center. Be sure
the oil holes in the bushings are aligned with the oil holes in the bushing bore, and drive the bushings into
place using the slide hammer until the bushings are flush with the edge of the bore.
After installation, check to make certain that the oil holes in the bushing bores are aligned with the oil holes
in the bushings.
Reverse the driver set ST-1 228 in the cylinder block so that the guide is in the rear bushing bore, and
replace the bushings in the front half of the engine taking care that the oil holes are aligned as in steps (1)
and (2), above.
Replace the camshafts in accordance with paragraph 9-1 5.
9-17. TIMING GEARS AND COVER INSPECTION.
Inspect the timing gear cover for cracks, and leaks in the gaskets and seal areas.
Remove the timing gear cover in accordance with paragraph 9-18.
Visually inspect the left and right bank camshafts gears (29 and 30, Figure 9-15), idler gears (36 and 37), water
pump idler gear (40), and crankshaft gear (43) for chipped, cracked, or galled teeth. I the gear teeth are
defective, replace the gears in accordance with paragraph 9-18.
Visually inspect the gears (29, 30, 36, 37, 40, and 43) for cracks. Pay particular attention to the webbing and
keyway areas. If the gears are defective, replace them in accordance with paragraph 9-18. If cracks are
suspected, remove the gears and inspect in accordance with paragraph 9-18.
Check the gear backlash and end play in accordance with paragraph 9-18.