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Mods and Maintenance: Drivetrain | Diffs (and Axles)

New Diamond Axle Housing from Front Range Off Road

It's been a minute since I happened to glance under my truck on the way home from a trip and noticed that the rear axle housing was cracked and leaking at the passenger side leaf perch. Luckily though, the sinking feeling I had at the time has faded, no doubt due to the smashing success of the patch I installed - following Ryan's @Reh5108 lead - which has been trouble-free ever since. Of course, the only reason I installed the patch was because it was going to take a long time - six weeks was the estimate - to get…

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On the Road Again - Temporarily Patching the Rear Axle Housing

It seems like it's been a lot longer, but it was only a couple of weeks ago that I noticed my rear axle housing was leaking at the passenger side leaf spring perch. On my way home from surveying the Aftermath of the Creek and Dixie Fires, I knew that this was not some maintenance item that I could just put off until there were no trips on the horizon. Nope, this is something that I needed to deal with right away. After several fruitful discussions with my buddies on TacomaWorld, I immediately set about lining up the long-term fix…

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My Front Diff is Leaking (...and Fixing It)

It was just a couple days ago that I noticed my front diff was leaking. Actually, I noticed it only because I was replacing my AC idler pulley for the second time in a month - having replaced it on The De-Tour last year and recently again with less than a week of the F.U. Rain trip remaining. I sure hope this time lasts longer than a week on the trail and a few muddy water crossings! But that's not what this post is about - this post is about my front diff. While I was under the truck with the…

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My U-joint was Toast!

Our trip to The Maze was awesome. However, you may recall that near the end, we hit a whoops a little fast, which led to me peering under the truck a few times on the way home to try and determine what the god-awful shake was that we were feeling in the accelerator, seats, and - after 15 hours on the road - our bones. I wasn't able to figure it out on the drive home, but the next day I spent some more time under the truck and noticed two things: The rear diff pinion seal had started leaking…

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Front Diff Oil Change - Not an Ideal Situation

February 21, 2018. Not all that long ago, the truck got a gear change - from the 4.10 factory gears to 4.88's - meaning that it's now easier on the engine to turn the bigger tires as it climbs up hills, over rocks, and generally towards adventure. Within a couple weeks of the gear change, I'd driven far enough to get 500 miles of break-in complete on the rear diff and changed the oil - and everything there seemed A-OK, which was nice. And then on our trip to Death Valley, we ran as much as we could in 4WD…

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The First Rear Differential Oil Change (with the new gears)

Having travelled the requisite 500 miles to break in my new 4.88 gears (you may want to read "New Gears - 4.88's and an ARB front locker" and "the first 500 mile break-in" if you haven't already), it was high time to change the oil in the rear diff - hopefully uneventfully - to clean out any metal and other gunk that may have been present as a result of the break-in. Toyota conveniently calls for 90W oil in the differentials, and that's hard to come by - at least for me, locally - so I decided on Lucas 80W-90,…

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Breaking in the New Gears

Before leaving JT's Parts & Accessories, I'd gotten the rundown from Jared and Chris on how to best break in the gears they'd just installed. Essentially, it boiled down to what gear manufacturers recommended as well... Break in Procedure New gear sets MUST be broken in correctly to prevent damage. Not following proper break-in procedures will lead to overloading and overheating the ring and pinion as well as breaking down and ruining the gear oil. Not following proper break-in procedures can be determined during inspection and will void the warranty. Please follow the below guidelines to ensure a proper break-in…

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No More Lugging - Re-Gear to 4.88's and Front ARB Locker

December 6, 2017. Over the last 17 years, the truck has been amazing. Truly a joy every time I get in it, work on it, or even just get all googly-eyed looking at it. But, as we've started bigger and longer adventures, and turned it into an adventure truck as much as an around-town-mobile, the truck has slowly gotten to a point where it was time to do something about the drive train. Big Tires = Big Problem …and by slowly, I mean it was about like this: And that cliff, right there at the edge, was the installation of…

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