What is the wheel bearing preload specification (rotation starting torque)?

0.8 - 2.7 N·m (8 - 28 kg-cm, 6.9 - 24.3 in-lb), or as measured at the wheel bolt: 15.7 - 54.9 N (1.6 - 5.6 kg, 3.5 - 12.3 lb).

What should I do if bearing preload doesn't match the specification?

Reselect the spacer: if any axial end-play is present or preload is lower than spec, replace the spacer with a smaller one; if preload is greater than spec, replace it with a larger one. Repeat steps 6 through 8 until the specified preload is obtained.

What tool is used when installing the drive shaft into the transaxle?

M/T: KV38106300; A/T: KV38105500 (J33904). It is set along the inner circumference of the oil seal on the transaxle side.

How do you verify the drive shaft circlip is properly seated?

After inserting the shaft, press-fit the circlip into the circlip groove of the side gear, then try to pull the flange out of the slide joint by hand to make sure the circlip is properly meshed with the side gear and will not come out.

What is the final step of the wheel hub assembly and adjustment procedure?

Insert a new cotter pin and then bend it up.

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Nissan Micra Front Axle Wheel Bearing Preload & Drive Shaft Installation FA-7

Front axle wheel hub and knuckle: bearing preload measurement and drive shaft install

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FA-7 front wheel bearing preload; rotation starting torque 0.8-2.7 N-m (15.7-54.9 N at wheel bolt); reselect spacer to adjust, install new cotter pin.

AI caption October 2005 · Photo 260 of 412

This is page FA-7 from a Nissan factory service manual section covering the Front Axle — Wheel Hub and Knuckle. The left column concludes the Assembly and Adjustment procedure: step 8 details measuring wheel bearing preload, specifying a rotation starting torque of 0.8-2.7 N·m (8-28 kg-cm, 6.9-24.3 in-lb) and, as measured at the wheel bolt with a spring scale, 15.7-54.9 N (1.6-5.6 kg, 3.5-12.3 lb). If preload is out of specification, the spacer must be reselected: a smaller spacer if end-play exists or preload is too low, a larger spacer if preload is too high. Steps 6-8 are repeated until the specified preload is achieved, then a new cotter pin is installed and bent up. The right column covers drive shaft installation into the transaxle: a seal-protector tool (M/T: KV38106300; A/T: KV38105500 / J33904) is set along the oil seal's inner circumference, the drive shaft is inserted with serrations aligned, the tool withdrawn, and the circlip press-fit into the side gear groove, verified by pulling the flange by hand. Illustrations SFA560, SFA482 and SFA483 accompany the text.

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Frequently asked questions

What is the wheel bearing preload specification (rotation starting torque)?: 0.8 - 2.7 N·m (8 - 28 kg-cm, 6.9 - 24.3 in-lb), or as measured at the wheel bolt: 15.7 - 54.9 N (1.6 - 5.6 kg, 3.5 - 12.3 lb).
What should I do if bearing preload doesn't match the specification?: Reselect the spacer: if any axial end-play is present or preload is lower than spec, replace the spacer with a smaller one; if preload is greater than spec, replace it with a larger one. Repeat steps 6 through 8 until the specified preload is obtained.
What tool is used when installing the drive shaft into the transaxle?: M/T: KV38106300; A/T: KV38105500 (J33904). It is set along the inner circumference of the oil seal on the transaxle side.
How do you verify the drive shaft circlip is properly seated?: After inserting the shaft, press-fit the circlip into the circlip groove of the side gear, then try to pull the flange out of the slide joint by hand to make sure the circlip is properly meshed with the side gear and will not come out.
What is the final step of the wheel hub assembly and adjustment procedure?: Insert a new cotter pin and then bend it up.