Front Diff

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ColSwede
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My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Mon Jul 15, 2019 8:51 pm

I'm just outside Denver. I found his carb rebuild video when I was fixing my baby up after being in storage. The video was perfect! And more recently, his video on the front axles helped me with removing them from the donor car. Very informative and extremely helpful for the do-it-yourselfer!

ColSwede
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Joined: Tue Dec 25, 2018 9:11 pm
My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Sun Jul 21, 2019 8:16 pm

SUCCESS!! The transmission etc has been fully removed from my donor car! Just moved it to my patio, which is covered, so I can begin to separate the diff from the rest... Would a Toyota dealer be a good place to go for info on all of the measurements, tolerances etc for all the internals, or is this something that would be going too far back and they wouldn't even know?

ColSwede
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My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Mon Jul 22, 2019 8:27 pm

Now that I have the unit out, I have removed all the bolts holding the diff onto the rest, but it doesn't seem to want to separate... I'm guessing internal components are keeping them together and I need to slide them apart in as straight of a line as possible? Suggestions? Tips? I really don't wanna screw anything up, kinda need this...

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Petros
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My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Front Diff

Post by Petros » Mon Jul 22, 2019 9:16 pm

likely the gasket is just gluing it together, make sure all of the bolts are out, and than it usually takes a couple of good whacks with a large soft mallet, and it will break free.

the factory service manual has a fairly detailed list of checks for clearances and wear for trans/diff components. the service manual is available for free download elsewhere on this site.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

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NWMO
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Re: Front Diff

Post by NWMO » Mon Jul 22, 2019 9:33 pm

“General” tab, “General Stickies Library of Links”, will be the first link in the list.

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ColSwede
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My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Tue Jul 23, 2019 8:04 pm

I can get about a quarter of an inch of separation on the halves but that's about it... Am I missing something? If it's stuck in gear, would that keep it together?

xirdneh
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My tercel:: 87 tercel 4x4 wagon w/reringed engine, 83 tercel 4x4 wagon w/salvaged engine and 4.1 Diff's
Location: seabeck, washington, USA

Re: Front Diff

Post by xirdneh » Wed Jul 24, 2019 4:21 pm

only three things connect diff to tranny
1. the end of countershaft goes into a roller bearing (that should not get stuck)
2. the end of main output shaft connects to pinion gear shaft with splined coupling (that could get stuck)
3. end of 5th gear shift shaft slips into hole in diff aluminum housing (doubt that could get stuck)
Love those Tercell 4x4 wagons but they sure suffer from road noise.

ColSwede
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My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Wed Jul 24, 2019 6:31 pm

How do I go about unstucking what ever might be stuck without messing up the diff?

teranfirbt
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My tercel:: '86 SR5 4WD, 5AFE, lifted rear, 195/70/14 tires
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Re: Front Diff

Post by teranfirbt » Thu Jul 25, 2019 5:21 pm

There is a bearing plate between the differential housing and the main housing, if you are trying to pull the bearing plate away from the transmission housing instead of the differential housing it will cause problems.

ColSwede
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My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Sun Jul 28, 2019 9:48 am

Going by that, Teranfirbt, I think that's what I'm actually doing, which might be my problem. So I'm guessing that I need to focus the separation about an inch and a half forward from where I've been trying? Some one at some point has been in this transmission before because there's red gasket maker on the forward piece...

ColSwede
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My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Mon Jul 29, 2019 10:38 am

Hot dawg! I got the diff removed from the rest of the transmission! Thank you all so much, you've helped me out a ton! I looked at the gears and everything looks good. I see some, mashing I guess, on the biggest gear, on the edge, kinda between the teeth, but no broken teeth or anything. Gonna see about taking it to a shop to get thoroughly inspected.

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Petros
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Re: Front Diff

Post by Petros » Mon Jul 29, 2019 8:51 pm

you should replace the rear seal of the trans, and the select lever seal (on the side of the housing) and the rear main seal on the back of the engine while you have it out (you have to remove the flywheel, which can be troublesome). consider replacing the clutch as well, unless you know it is not too old (less than 40k miles). None cost much, and it will save you from having to pull it out for 80 to 100k miles.
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

ColSwede
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Posts: 59
Joined: Tue Dec 25, 2018 9:11 pm
My tercel:: 83 Tercel Wagon 4wd

Re: Front Diff

Post by ColSwede » Tue Jul 30, 2019 8:13 pm

I already planned on doing the clutch, I think you had mentioned doing the rear main seal. However, I took the donor diff (or transfer case, depending on who I talk to) to a shop today to look it over. He said that this one isn't in the best of shape. Showed me where the "hardening" (I think that's what he called it) was wearing off the teeth of the ring gear... Anyone know where I can find new internals?

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