2
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Apr. 2007
DSC48
417W287A
417W288A
(1) Injection pump gear
(2) Snap ring
► INJECTION PUMP GEAR SIDE CLEARANCE
1. Pull each end of the fuel camshaft and injection pump
gear (1).
2. Measure the clearance (A) between the injection pump
gear (1) and snap ring (2) on the fuel camshaft.
3. If the measurement exceeds the allowable limit, check
the gear, bearing and key.
► IDLE GEAR OIL CLEARANCE
1. Measure the idle gear shaft O.D. with an outside mi-
crometer.
2. Measure the idle gear bushings I.D. with an inside mi-
crometer.
3. If the measurement exceeds the allowable limit, replace
the bushing.
► REPLACING IDLE GEAR BUSHINGS
1. Press out the bushings using an idle gear bushing re-
placing tool.
2. Clean the bushings and bore. And apply oil to them.
3. Press in the bushing using the replacing tool.
417W286A
Factory spec. Allowable limit
0.15 ~ 0.57 mm
0.006 ~ 0.022 in.
0.9 mm
0.035 in.
Factory spec. Allowable limit
Oil clearance
0.025 ~ 0.066 mm
0.001 ~ 0.003 in.
0.1 mm
0.004 in.
Shaft O.D.
37.959 ~ 37.975 mm
1.494 ~ 1.495 in.
-
Bushing I.D.
38.000 ~ 38.025 mm
1.496 ~ 1.497 in.
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