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Tag: rear diff

Installing a BAMF Rear Diff Skid Plate

First gen Tacoma's don't see much love from the fabricators these days. It's understandable, really - these trucks are getting older and there aren't as many out there as 2nd and 3rd gen Tacoma's. Plus, those of us that own 1st gens are cheap - that's part of why we're still running these older trucks! Knowing that this was the case even a few years ago, I eagerly awaited a sale to purchase a rear diff skid from Jerry @JLee and the good folks over at Bay Area Metal Fabrication (BAMF). One came along for Black Friday, and despite the…

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Rear Axle Seals - This Time on the Tacoma

When it rains, it pours! It was only a few weeks ago that I replaced the rear axle seals on the 3rd gen 4Runner. No good deed goes unpunished however, and it was only a couple days after doing the job that the same failure happened on the Tacoma - only this time, I was in Canada. Luckily for me, I already had a well thought-through step-by-step list of exactly what to do, and the muscle memory of doing it once twice already. Step-by-Step: Replacing Rear Axle Seal & Bearing on a 1st gen Tacoma w/ABS (or 3rd gen 4Runner)…

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Replacing My Rear Axle Seals & Bearings on a Toyota 4Runner (also Tacoma)

Well, as I mentioned previously, our last family camping trip was both a success and a failure. I mean, the camping part was all success, but noticing that my rear axle seals were leaking when we got home - that part was definitely a failure. The telltale oil streak of a blown axle seal. My first order of business was to address what I hoped was what caused the seals to leak in the first place - by relocating the rear diff breather. With that out of the way, it was time to address the actual problem - so I…

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Step-by-Step Replacing Rear Axle Seal & Bearing w/ABS (1st gen Tacoma or 3rd gen 4Runner)

I recently discovered a dreaded gear oil leak on my 4Runner, and knew it meant only one thing - it was time to change the rear axle seals (and bearings and brake shoes since they were now saturated with oil). In addition to the story of the 4Runner repair, and later the Tacoma repair, I figured a detailed set of instructions for anyone wanting to tackle this themselves would be nice to put together, since it's hard to find that written down in one concise place (maybe even impossible before now). This is of course based on two amazing resources -…

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I'm Too Late! - Rear Diff Breather Mod on 3rd Gen 4Runner

I have a confession to make: I procrastinated this job and it may have cost me. So let's back up for a moment. See, this was a mod that I knew I needed to do to the 4Runner as soon as I got it. Toyota has conveniently placed the rear diff breather right on top of the rear diff - pretty much as low as it can go. All well and good except that it's not at all well and good. In that position, not only can the breather can suck water into the diff when submerged in deep water,…

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

December 24, 2017. 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…

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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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Rear Diff Breather Mod - Why didn't I do this sooner?

It seems like just about everyone does this mod sooner or later, and I chose a little later. 17 years a little later. The fact that we have to do this mod at all is a bit unfortunate. Designers at Toyota placed a breather for the rear differential right on the diff housing, which means that if you submerse the diff in water when it's hot, the contraction of air in the diff could suck water into the diff, destroying it. Sounds great, right? Yeah, clearly no. The fix is pretty simple: add an extension to the breather to move…

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