Broke Down 1st Gen

His tires were different sizes and he was doing 60 in 4HI for an extended length of time. Front diff got over loaded and the pinion was the weak link causing everything else to blow

 

For what its worth I dont totally buy that theory. That the pinion would entirely shear off before something else like a CV or even DS failed. I suppose it could have been weakened by some other event at some point in its lifetime, but still..

Im more curious about the trans thing. Wondering if I misunderstood what he was saying, or if I missed something altogether

 

I'm a little late to this party but I think your list is dead on. Only thing I would say before getting a new transmission is check the old one out thoroughly. If its ok he may just need a new bell housing not the complete trans.

@rackomint You should be able to find all these used parts for less then $1,000
Clutch slave and line $40
Transmission $300
Front differential $200
Driveshaft shop $60
Clutch disc, pressure plate, Throw out bearing, pilot bearing. $250 (all new parts)
Thorough check of T-case and

 

When I've seen this happen to a Subaru, it's always been the diff that fails before the CVs do

 

I think the thing is that the load is being split across both CVs, but the driveshaft is taking the full force of the mismatch.

 

I don't think that transmission bellhousing is removable.

But, a decent welder should be able to whip up a new slave cylinder mount.

 

Also, for full clarification, he needs a transmission from a V6, not from a 4 cylinder.

 

R150f has a removable bellhousing

 

Oh nice catch, looking at the pics he posted I swore it looked like one piece.

 

@rackomint I did have a similar thing happen but not near as bad. My front diff had a bearing seez on the pinion. Lucky I was only doing 35mph and on a light dusting of fresh snow. My truck just skidded to a stop. after shifting it out of 4wd. I could move the truck BUT it turns out I lost some teeth on the rear diff. Point being check the rear diff as well.

 

Wow Rackomint
1st gen Taco.....7.5" front clamshell(shown left) and 8.4" rear 3rd(right) . I think your front pinion just super heated which weakens it tremendously..... and sheared in 2 where the pinion splines meet the actual solid pinion. As shown in the pic, your pinion shaft probably sheared just above the top of the splines. The rear 8.4" 3rd had the same strain as the front but it is so much more beefy. The front clam is a high pinion and that hi-pinion arrangement kind of starves the pinion bearings for oil anyways. Even thou the rear 3rd lived it is best to check the oil and if it is black change it out for fresh unburnt oil.

The front pinion teeth might have melted down too. Open that clamshell up(Ten 14mm bolts) and post a pic of the pinion head.

ZUK


PS----Sounds like the chain driven transfercase lived....a testimonial to its strength.

 

I will when I get around to opening it. Thanks for your advice.
I don't have the expertise to tackle these repairs so she will sit for a little bit.
Going to try and find someone local to help me with it and I'll try to get those pics

 

Finally got to working on her.
Been going for a almost a week after work.
Here is the inside of the bell housing, broken pivot pin

I took advantage of this to give the tranny a quick clean


Here is the front driveshaft, where it connects to the front diff, I'm not sure what's it's called, but it is sheared off..



And the front diff




Any chance I can replace this broken shaft and possibly salvage the diff?

Can I take out the front diff or disable it to make it RWD temporarily?

I haven't found a front diff just yet

 

You might be able to as long as the bearing didn't seeze up. If it did the pinion shaft may be stuck in there unless you have a super strong press.

 

OUCH... now thats carnage...

 

Hey Rackomint,
If you did send that to me for rebuild it means you could drive it around without the clamshell as long as you have the outer piece(birf end) in the spindle and the nut tiighten to 300 ft/lbs I think. That is what holds the spindle together. In the picture, the axle was being stubborn about coming apart at the birf so I cut the %$#@! in the middle of the birf and was then able to drive my Tacoma around. The truck was about to see an SAS so I did not care about the CV axles anymore.


I'd be happy to rebuild but that is a more expensive route.......better off finding a used 7.5" clamshell with stock 410 gears(check your ratio). I assume you still have stock gears and did not regear. 41 teeth means 410 gears.

 

Thanks man, I will try to get this done. I'm not 100% sure what some of these things mean.
I'm a summing the clamshell is the front diff housing and gears and the birf is the silver nut in the picture?

 

You can run in 2wd with the axles removed up front, but the outer part of the CV axle (birf end) has to be in the hub with the axle nut torqued on the end to 173 ft/lbs....the birf end and axle nut is what keeps your wheel bearing together, without it the wheel bearing will fail in short order.

 

173

The birf is that sideways looking ashtray. I destroyed my birf to keep my 01 Taco drivable for a few more weeks. You might not have the "tools" to separate the axle from the birf....shop might have to do that. Anyways, that would at least keep you on the road.

 

Working on le truck and here are some pics of the frond diff.
It's destroyed inside.
I had to take the drain plug with a breaker bar the whole way out.
Diff fluid and a piece of metal that came off with drain plug..


View from drain plug, decorated with beautiful metal shards


I can't believe how pretty this drain plug is, I think I'll auction it for 10 million dollars, it's probably haunted, I'll ship it for free to whoever wants it



View from fill plug, nothing too interesting, except for Becky's (my truck) empty chamber of secrets


Doesn't this thread keep getting better and better?!?

Also, I want to thank Timmah! Timmy the toolman because his videos have saved my ass so far, Tour991 for sending me a new diff I am receiving tomorrow and all of you suckers that have helped go through this.
I love you all, these forums, and (still) my heart breaking tacoma