Symptoms
Lifting a rear wheel on cross-axle ruts and losing drive, even with the LSD.
The fix, step by step
- Identify the diff first.
- Members say the MQ wagon's bolt-in-centre H233 (plate code HG) isn't the GQ/GU H233B, and that lockers made for the H233B (ARB RD135/RD136) don't fit it.
- One member gives the ARB Air Locker for the MQ H233 as RD04; confirm it against ARB's current application chart.
- Utes with the H260 need a different unit.
- Have the carrier set up by a diff shop if you aren't equipped to set backlash and preload.
Tools & part numbers
- Diff shop or bearing puller, dial indicator, torque wrench
- air compressor and lines for an Air Locker
Where to buy the parts
Hunting a used or discontinued part? Search eBay Motors for Nissan Patrol 160 / MQ parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.