What is the torque spec for the front wheel bearing lock nut?

78 - 157 N·m (8 - 16 kg-m, 58 - 116 ft-lb), tightened to the drive shaft.

Which parts must always be replaced when removed?

Parts marked *1: the inside and outside grease seals, the circlip, and the cotter pin.

Can I replace only one front wheel bearing?

No. The caution states that when replacing a wheel bearing, replace the inner and outer wheel bearings at the same time to prevent mixed use of bearings of different brands.

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Nissan Micra Front Axle Wheel Hub & Knuckle Exploded Diagram, Torque Specs FA-3

Exploded view of front wheel hub and knuckle with drive shaft and bearings

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Exploded parts diagram of front wheel hub and knuckle showing drive shaft, bearings, seals, disc rotor and torque values.

AI caption October 2005 · Photo 256 of 412

This page is from a Nissan factory service manual, section FA (Front Axle), page FA-3, covering the front wheel hub and knuckle assembly. The top half contains an exploded parts diagram showing the drive shaft, grease seals (inside and outside), circlip, inner and outer wheel bearings, knuckle, baffle plate, spacer (refer to S.D.S.), wheel hub, disc rotor, wheel nut, wheel bearing lock nut, washer, adjusting cap, cotter pin, and hub cap. Key torque specifications are provided: wheel nuts and knuckle-to-strut fasteners at 98-118 N·m (10.0-12.0 kg-m, 72-87 ft-lb) and the wheel bearing lock nut at 78-157 N·m (8-16 kg-m, 58-116 ft-lb). Footnotes state that circlips, grease seals, and cotter pins must always be replaced when removed, and a caution warns to replace inner and outer wheel bearings at the same time to avoid mixing bearing brands. The lower half begins the Removal procedure: loosen (not remove) the wheel bearing lock nut with wheel nuts installed to protect the wheel bolts, and remove the tie-rod ball joint using special tool HT72520000 (J25730-A). Figure references SFA559, SFA495, and SFA372 appear on the diagrams.

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Frequently asked questions

What is the torque spec for the front wheel bearing lock nut?: 78 - 157 N·m (8 - 16 kg-m, 58 - 116 ft-lb), tightened to the drive shaft.
What is the wheel nut torque specification?: 98 - 118 N·m (10.0 - 12.0 kg-m, 72 - 87 ft-lb).
Which parts must always be replaced when removed?: Parts marked *1: the inside and outside grease seals, the circlip, and the cotter pin.
What special tool is used to remove the tie-rod ball joint?: Tool HT72520000 (J25730-A).
Can I replace only one front wheel bearing?: No. The caution states that when replacing a wheel bearing, replace the inner and outer wheel bearings at the same time to prevent mixed use of bearings of different brands.