Diesel Data: Automotive Repair

Front Planetary Gear




COMPONENTS

INSPECTION OF SUN GEAR

INSPECT SUN GEAR BUSHING




Using a dial indicator, measure the inside diameter of the sun gear.

Standard inside diameter: 22.025 - 22.046 mm (0.8671 - 0.8680 in.)
Maximum diameter: 22.096 mm (0.8699 in.)

If the inside diameter is greater than the maximum, replace the sun gear.




INSPECTION OF FRONT PLANETARY GEAR

MEASURE PLANETARY PINION GEAR THRUST CLEARANCE
Using a feeler gauge, measure the planetary pinion gear thrust clearance.

Standard clearance: 0.2 - 0.5 mm (0.008 - 0.020 in.)
Maximum clearance: 0.5 mm (0.020 in.)

If the clearance is greater than the maximum, replace the planetary gear assembly.

INSPECTION OF PLANETARY RING GEAR




1. INSPECT RING GEAR FLANGE BUSHING
Using a dial indicator, measure the inside diameter of the flange bushing.

Standard inside diameter: 19.025 - 19.050 mm (0.7490 - 0.7500 in.)
Maximum inside diameter: 19.100 mm (0.7520 in.)

If the inside diameter is greater than the maximum, replace the flange.