Checking the engine flywheel

1. Check that the clearance between the pump casing and the driven gear is within the specified limit.

0.170 + 0.275 mm

1. Check that the clearance between the pump casing and the upper side of the gears is within the specified limits.

0.025 + 0.075 mm

Checking the engine flywheel

• Check that the ring gear teeth are not cracked or show signs of seizure; if they do, change the ring gear.
• Working under the press remove the old ring gear.
• Accurately clean the contact surfaces of the new ring gear and of the flywheel;
• Evenly heat the new ring gear to 120° + 140°C and fit it on the flywheel; leave to cool naturally, do not force cool.

Checking the engine flywheel

• Using a torque meter, check that the characteristic data of the engine oil pressure limiting valve control spring are within the specified limits.

Spring length
With spring free 54 mm
With static load (14.6 kg) 36 mm
With dynamic load (21 kg) 28 mm

1. Check that the clearance between the lobe of the inner gear and that of the driven gear is within the specified limits.

0.040 + 0.290 mm