Checking Backlash - New Holland T8010 Manual

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Checking Backlash

Position dial indicator on lip of differential housing

and indicate to side of one tooth on ring gear.

Move ring gear as far as it will go in one direction

before it moves the pinion.

"0" the dial on the indicator face.

Move the ring gear in the opposite direction until it

contacts the pinion gear and observe the dial face.

The reading should be 0.127 to 0.254 mm (0.005 to

0.010 inch) (for 10 stud wheel end axle), or 0.127

mm to 0.203 mm (0.005 to 0.008 inch) (for 12 stud

wheel end axle). Check the backlash at three

different locations around the gear. There should be

no more than 0.06 mm (0.003 inch) var iation

between readings.

A reading larger than 0.008 to 0.010 inch is corrected

by moving ring gear closer to pinion. A reading

smaller than 0.005 inch is corrected by moving the

ring gear away from the pinion. Move the ring gear by

loosening on adjusting ring and then tightening the

opposite adjusting ring the same amount. Both

adjusting rings must be moved the same amount.

Section 25 - Four-Wheel Drive Front Axle - Chapter 9

Install the seal retainer and retain with the three

socket head screws. Torque the screws to 4.0 to 4.5

Nm (36 to 4 0 lb. inch).

When backlash is adjusted properly, rotating torque

at the pinion shaft should be 2.5 to 5 lb. inch higher

than the torque you had when setting pinion shaft

bearing preload.

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