Differences in HF1A tcases (2 Viewers)

[troopie]

So i just bought a HZJ105 part time tcase (HF1A) to fit on my H151f that came with a full time (HF2A) tcase. Apperently the input shafts have a different spline count. I wasn't aware of that.
Does anybody know if i can swap the input gear so it will fit on the H151f or do i have a very expensive paperweight?

Hope someone can shed some light on this.

Thanks,
Mark

 

[Locked79]

Are you sure the hzj105 has a HF1A. They run the R151f gearbox with a split case I thought. (BF1A?)

HF1A came behind part time 80's, hdj78/79, fzj78/79 and vdj76/78/79 afaik. Hzj78/79/105 had the weaker R151f.

Edit. Yes the hzj105 does run the hf1a, my bad.

 

[troopie]

Yes i'm positive. The 105 has an r151 with the hf1a behind it. And that's probably why it has a diffenent spline count.

 

[mudgudgeon]

Troopie, you can use the transfer case, they have different input gears. The gear can be swapped over.

Have a search on local.org/forum in the 100scool section. There's a thread on gearbox swaps, this is covered in detail

 

[troopie]

Nice! That's exactly what i wanted to hear!

 

[troopie]

Well apperantly the inputs don't swap out. On the 80 box the input shaft and gear are separate parts and on the 105 box it's casted out of one piece. The tooth count is the same on both gears, but the overall size is slightly larger on the one out of the 80 and binds up. If the 105 input would be separate like the 80 one i could swap out gears, but unfortunately i can't.

I can't see anything on the lcool website because i'm not registered and it won't let me register either....

Back to the drawing board i guess.

 

[mudgudgeon]

LCOOL.org :: Log in

Shouldn't be hard to register on lcool

It's been done more than once. Pics and part numbers available in the link above.
One if the guys who has done it is a very credible source of info

 

[Locked79]

@troopie After a bit of research, what I have come up with is you need to use the input gear out of a 1fz 100 series (36212-60120). This part is the same for both Hf1a and Hf2a

The HZJ105 Hf1a input gear number is 36212-60130

And the 80 series input shaft (36211-60400) and gear (36212-60100).

This is what I have come with, so please check this is correct.

 

[mudgudgeon]

I think locked79 is correct. After a search through toyodiy, it looks like this is correct.

 

[troopie]

On the LCool website there is somekind of application form to fill out before i can actually register but that page ends nowhere so i can't continue to register...

Anyway. i've been playing on Toyodiy with the partnumbers and it looks like the 36212-60120 is what i need to order. Just like mudgudgeon just confirmed.

Also i was wrong when i stated that the overall diameter was larger. I measured again and it's the same. But i then noticed that the angles on the gears are different. No wonder it binds.

Thanks again!

 

[Locked79]

Lcool is a good place for info, just strict on requirements.

 

[remy]

I've used the hf1a from a FZJ100 as well. Will fit a 80 series diesel H151F. (19 splines)

 

[troopie]

Got an email back from Lcool. There are some issues with the website, that's why i can't register.

Anyway. I don't like wasting time so i'm going to order the 36212-60120 gear without actually reading the thread on Lcool and hopefully that will make things work.

I'll update this thread once i got the gear in hands

Fingers crossed...

Mark

 

[mudgudgeon]

One thing to look for, if the gearbox output shaft has a hole in the end , you may need a threaded plug in that hole to stop oil being pumped from the gearbox into the transfer case

 

[troopie]

Just a small update. I got the gear from Japan and it worked! I needed to plug the threaded hole just like mudgudgeon said. Swapped the bearings and it simply bolted together. Fitted it and took it for a testdrive.
BTW. a 45 with an 1HDFT is hilarious, even when it's on 37's

 

[mudgudgeon]

We need videos!

 

[Bear0]

Sorry to bring up an old thread, but I am desperately in need of some clarification on the above, hopefully if someone can help out.
I have a hzj80 with a part time transfer which I have recently blown up. (keeps dropping out of h2 and H4)
I have bought a HF1a from a 105 series with a different input shaft same issue as the above. The input gear and shaft is cast out a single piece of steel and unfortunately cannot be separated. I tried changing the input assembly but had the same issue as @troopie and it seized up.
So my understanding of the above is that if I purchase an input gear off a fzj100 or 105 and some new bearing I can fit that to my original input shaft off my 80 series transfer with the correct spline for my gearbox. I can then install this assembly onto the 105 transfer and the gears will mesh properly?
Why are some 100 series one piece and others able to be seperated?
Also the part looks different to the input gear on my 80 series HF1A.
Is this the correct part and has anyone used the below site for spares?36212-60120 - Toyota Parts Deal
@mudgudgeon Any help will be much appreciated.

Thanks in advance.

 

[Tapage]

your HF1A hace the electric actuator on top or it's full manual .?

 

[Bear0]

Full manual.

 

[mudgudgeon]

I think troopie covered this pretty well.

Fzj105 had the H151F heavy duty gear box, and HF1A transfer case. This transfer should be a direct replacement for an 80 t case.

HZJ105 had R151F gearbox (light duty).
The HF1A t case for HZJ105 had different input gear to match the smaller shafts in the light duty R151