What is the rear wheel bearing axial play specification?

Axial play must be 0 mm (0 in) — the document states any slightest wheel bearing axial play cannot be tolerated.

What is the wheel bearing starting torque with a new grease seal?

0.29 - 0.93 N·m (3.0 - 9.5 kg-cm, 2.6 - 8.2 in-lb) or less; when measured at the wheel hub bolt, 5.9 - 18.6 N (0.6 - 1.9 kg, 1.3 - 4.2 lb) or less.

Is the starting torque spec different with a used grease seal?

No — the same values apply: 0.29 - 0.93 N·m (3.0 - 9.5 kg-cm, 2.6 - 8.2 in-lb) or less, and 5.9 - 18.6 N (0.6 - 1.9 kg, 1.3 - 4.2 lb) or less at the wheel hub bolt.

How is the wheel bearing starting force measured?

By measuring the rotation starting force toward the tangential direction against the hub bolt (at 90°, per the illustration), making sure no 'dragging' resistance exists since the figures do not include dragging resistance.

What is the caution when adjusting rear wheel bearing preload?

Do not overtighten wheel bearing nuts, as this can cause wheel bearing seizure.

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Nissan Rear Axle Wheel Bearing Preload Adjustment - Torque Specs (RA-4)

Rear axle wheel bearing preload adjustment procedure with starting-torque and axial-play specs

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Rear axle wheel bearing preload adjustment steps. Axial play 0 mm; bearing starting torque 0.29-0.93 N-m, or 5.9-18.6 N at hub bolt. Do not overtighten to avoid bearing seizure.

AI caption October 2005 · Photo 273 of 412

This is page RA-4 from a Nissan factory service manual, covering the Rear Axle (RA) section, specifically the continuation of the wheel bearing Preload Adjustment procedure. It provides steps 7 through 10: installing the adjusting cap and aligning its slots with the spindle hole (tightening the lock nut up to 15 degrees if needed), a caution against overtightening wheel bearing nuts which can cause bearing seizure, and turning the hub in both directions two or three times to verify turning torque and axial play. Specifications given include axial play of 0 mm (0 in) and wheel bearing starting torque of 0.29–0.93 N·m (3.0–9.5 kg-cm, 2.6–8.2 in-lb) or less with either a new or used grease seal, or 5.9–18.6 N (0.6–1.9 kg, 1.3–4.2 lb) or less when measured at the wheel hub bolt with a spring scale. Step 9 explains that the rotation starting force must be measured tangentially against the hub bolt, excluding any dragging resistance, and that no axial play can be tolerated. Step 10 instructs spreading the cotter pin. Two illustrations (SRA416, SRA417) show the spring-scale measurement at 90° and the cotter pin installation.

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Frequently asked questions

What is the rear wheel bearing axial play specification?: Axial play must be 0 mm (0 in) — the document states any slightest wheel bearing axial play cannot be tolerated.
What is the wheel bearing starting torque with a new grease seal?: 0.29 - 0.93 N·m (3.0 - 9.5 kg-cm, 2.6 - 8.2 in-lb) or less; when measured at the wheel hub bolt, 5.9 - 18.6 N (0.6 - 1.9 kg, 1.3 - 4.2 lb) or less.
Is the starting torque spec different with a used grease seal?: No — the same values apply: 0.29 - 0.93 N·m (3.0 - 9.5 kg-cm, 2.6 - 8.2 in-lb) or less, and 5.9 - 18.6 N (0.6 - 1.9 kg, 1.3 - 4.2 lb) or less at the wheel hub bolt.
How is the wheel bearing starting force measured?: By measuring the rotation starting force toward the tangential direction against the hub bolt (at 90°, per the illustration), making sure no 'dragging' resistance exists since the figures do not include dragging resistance.
What is the caution when adjusting rear wheel bearing preload?: Do not overtighten wheel bearing nuts, as this can cause wheel bearing seizure.