Throw Out Bearing Help HDJ80

[CaptBeardilocks]

Hey All,

Can anyone confirm the correct part number for a 1HDT with a H151 or 152 transmission? I seem to be getting different part numbers.

I ordered a 31230-60181 and it is a touch shorter than the generic one that came in the Terrain Tamer kit for my truck.

Can anyone steer me right?

 

[mudgudgeon]

What year?

I had the same issue when u out a clutch in my fzj80 / H151.
Different part numbers, and the bearing supplied with the clutch was too short and the clutch wouldn't disengage.

 

[CaptBeardilocks]

1HDT/H151 was out of a 1990 HDJ80

But I’m swapping in an H152 right now. So I don’t know if that changes anything.

 

[mudgudgeon]

1HDT/H151 was out of a 1990 HDJ80

But I’m swapping in an H152 right now. So I don’t know if that changes anything.

Search the diesel section for H152 swap thread by @wedgetail

Not sure it will help, but he did a fairly detailed write up

 

[CaptBeardilocks]

I’ll try to reach out to him. A quick search of his threads didn’t turn up anything definitive.

This is what I’m looking at. Slightly taller one came in the TT kit 6874. I’m reasonably certain I grabbed a throw out bearing for a later truck but I need to check.

 

[67azcruizr]

31230-60130 is what you are looking for

31230-60181 is for an FZ

 

[mudgudgeon]

I’ll try to reach out to him. A quick search of his threads didn’t turn up anything definitive.

This is what I’m looking at. Slightly taller one came in the TT kit 6874. I’m reasonably certain I grabbed a throw out bearing for a later truck but I need to check.

View attachment 3686182

View attachment 3686183

Yup, that's the difference between s clutch that works, and a clutch that does nothing

 

[CaptBeardilocks]

I think it's possible (from checking this thread) that the difference might be in early vs late trucks.

Which is part of where my question lies now putting a new H152 in using the early H151 bell housing but a new H152/1HDT input shaft.

I need to go out and carefully measure the H151 input shaft vs the H152. Crap.

 

[CaptBeardilocks]

31230-60130 is what you are looking for

31230-60181 is for an FZ

Yeah the throwout bearing for the VIN my engine came from (via Partsouq) is the 31230-60120. Not 60130. But then my engine/trans came from England with a 275mm flex instead of the larger 300mm which I upgraded to.

Just need to figure out now where I stand with the mishmash of early & late parts. Ugh.

EDIT: Wrong Part Number listed first.

 

[67azcruizr]

I think it's possible (from checking this thread) that the difference might be in early vs late trucks.

Which is part of where my question lies now putting a new H152 in using the early H151 bell housing but a new H152/1HDT input shaft.

I need to go out and carefully measure the H151 input shaft vs the H152. Crap.

the input shaft from the H151 will need to be swapped onto the H152.

disregard the "engine # from the vin if you are swapping engines..............................?

 

[CaptBeardilocks]

I put a brand new 1HDT input shaft on the H152.

FWIW measuring the distance from the carrier seat to the end of the input shaft is identical btw the early H151 and new H152 (with 1HDT shaft).

The difference in bearing size is ~1/4"

Completely a guess but I'm guessing Toyota changed the clutch cover dimensions and matched the bearing to that. The TT clutch kit must use the earlier style cover bearing for all years since it doesn't matter as long as they are matched.

At least that's my theory unless anyone drop any more knowledge bombs on me.

 

[mudgudgeon]

I put a brand new 1HDT input shaft on the H152.

FWIW measuring the distance from the carrier seat to the end of the input shaft is identical btw the early H151 and new H152 (with 1HDT shaft).

The difference in bearing size is ~1/4"

Completely a guess but I'm guessing Toyota changed the clutch cover dimensions and matched the bearing to that. The TT clutch kit must use the earlier style cover bearing for all years since it doesn't matter as long as they are matched.

At least that's my theory unless anyone drop any more knowledge bombs on me.

I think you are right.
The aftermarket clutch i bought i couldn't find info about different bearing part numbers.
And the manufacturer was no help in answering questions.

The difference for mine was 5mm.

 

[wedgetail]

Sorry problems with sign in. Pm sent

 

[logicbyondreaso]

@CaptBeardilocks - any updates to this? What bearing did you go with?
Also any idea what pressure plate part number you have?
How about the slave and master cylinders?

 

[CaptBeardilocks]

For me, I used Terrain Tamer HD clutch. So no PP number. When I swapped from H151 to H152, the clutch plate had a lot of life left in it but the throw out bearing was a bit crunchy (I had used the provided bearing from TT). So I thought I'd "upgrade to an OEM TO Bearing.

Slave and Master are stock OEM parts.

I'm not sure if going with the OEM TO Bearing was an improvement or not. Already a bit noisy after ~15k miles. But I do use he truck for what it was designed for.

 

[logicbyondreaso]

For me, I used Terrain Tamer HD clutch. So no PP number. When I swapped from H151 to H152, the clutch plate had a lot of life left in it but the throw out bearing was a bit crunchy (I had used the provided bearing from TT). So I thought I'd "upgrade to an OEM TO Bearing.

Slave and Master are stock OEM parts.

I'm not sure if going with the OEM TO Bearing was an improvement or not. Already a bit noisy after ~15k miles. But I do use he truck for what it was designed for.

So did you end up installing the 31230-60181 release bearing with the Terrain Tamer pressure plate? If so, any shifting issues into 1st or 2nd gears?

 

[CaptBeardilocks]

I installed 31230-60130 and it seemed to fit correctly with the TT kit.

Funny that you ask about shifting.... It takes a bit of pressure to shift down into 1st gear when rolling. Worse when cold but still noticeable fully warmed up. I thought that might get better as the new transmission broke in, but 15k miles (and a fluid change later) later and it's not much different.

You think that could be a bearing issue? My 225k mile H151 with the fill TT kit never had shifting issues...

 

[logicbyondreaso]

The 31230-60130 bearing is the same size as the TT kit one so I don't think that is your issue.
I would suspect there may be some air in your line. Have you bled it thoroughly? Any other work completed during the H152 swap?
What gear oil are you running?

 

[CaptBeardilocks]

I didn't bleed the slave because it never came off. It was new about 4yrs before the trans swap and I just needed to move it out of the way to put the H152 in.

First 10k miles on the H152 I was running the same Red Line MT90 I had in the H151. First change I swapped to Lucas 75w90 Synth just to see if that had any effect. Maybe a teensy bit? Or that was just hopes and dreams.