That’s an awesome find! A 1990 HDJ81 with the 1HD-T and factory triple lockers is a seriously special truck. The fact that it handled an 8 hour drive home without missing a beat says a lot about how well these were built. There’s something amazing about getting behind the wheel of a 30+ year old vehicle that still feels solid and dependable. Congrats on the new rig, hope it’s been treating you well all these years later!
Roaming Lost: x3 Locked 1990 Toyota HDJ81 (80 Series)
- Thread starter roaminglost
- Start date
Influencer I
Had some play in the front end of my '90, so I took it to Off-Road Toy Outfitters in vancouver WA. They diagnosed a loose trunnion bearing. Worn, damaged, or set up wrong, no way to know until it came apart.
Once the knuckles were open, the wear and contamination went deeper than the bearings. Swapping bearings alone would have masked the symptom without fixing the truck, so they recommended a full knuckle rebuild and I went for it. Both sides came fully apart, got inspected, and went back together with Trail Gear Trail Safe ball wipers and inner axle seals in place of the factory parts. Better contamination protection for a truck I use hard.
The detail work is what sold me on this shop. Before reassembly they took a flat bastard file to the machined mating surfaces on the knuckles. Decades of service work leaves high spots and burrs where things bolt up, and skipping this step stacks tolerance errors into a rebuild. They knocked every one down so the surfaces sit flat and true, like they came off the line.
They stripped the knuckles with a wire wheel and acetone, primed them, and shot them in 2K chassis black. Holds up as well as or better than whatever left the factory in 1990. All the reused hardware went through an ultrasonic cleaner first.
Everything went back together with Loctite and palladium grease. They also upgraded the knuckle and hub studs to ARP hardware while it was open. More clamping strength, and a lot cheaper now than opening this front end back up down the road.
This is what a knuckle rebuild looks like when nothing gets skipped. If you're chasing play in a solid axle front end, don't stop at the bearings.
Once the knuckles were open, the wear and contamination went deeper than the bearings. Swapping bearings alone would have masked the symptom without fixing the truck, so they recommended a full knuckle rebuild and I went for it. Both sides came fully apart, got inspected, and went back together with Trail Gear Trail Safe ball wipers and inner axle seals in place of the factory parts. Better contamination protection for a truck I use hard.
The detail work is what sold me on this shop. Before reassembly they took a flat bastard file to the machined mating surfaces on the knuckles. Decades of service work leaves high spots and burrs where things bolt up, and skipping this step stacks tolerance errors into a rebuild. They knocked every one down so the surfaces sit flat and true, like they came off the line.
They stripped the knuckles with a wire wheel and acetone, primed them, and shot them in 2K chassis black. Holds up as well as or better than whatever left the factory in 1990. All the reused hardware went through an ultrasonic cleaner first.
Everything went back together with Loctite and palladium grease. They also upgraded the knuckle and hub studs to ARP hardware while it was open. More clamping strength, and a lot cheaper now than opening this front end back up down the road.
This is what a knuckle rebuild looks like when nothing gets skipped. If you're chasing play in a solid axle front end, don't stop at the bearings.
