Symptoms
No records, weeping seals at the hub housings or diffs, or noise from the driveline.
The fix, step by step
- Drain and refill both differentials, the transfer case and all four hub-reduction housings with the oils specified in the factory manual.
- One BaT seller had the differentials serviced with fresh fluid before sale.
- Look for metal on the drain plugs and leaking seals while you're there.
Tools & part numbers
- Factory manual for fill levels confirm in manual
- drain pans
- fluid pump
Where to buy the parts
Hunting a used or discontinued part? Search eBay Motors for Toyota Mega Cruiser 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.