On my BJ74 the clutch fluid seems to be slowly disappearing, not very much mind you but crawling under the dash the firewall is a little moist where the clutch booster is sitting so I'd image that one of the seals is slowly deteriorating. Doing a search I see mention of a rebuild kit. Does a kit that is used for a BJ70 work for a BJ74 as well? I guess its available from Toyota?
Slow Clutch Fluid Leak
- Thread starter Canuck
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You should be able to use any 60 or 70 series kit,but IMO you are better off with a new one.
The rebuilds almost always start leaking again. There is some good aftermarket ones around.
Hi Peter, it is quite common that the clutch master cylinder starts leaking on these BJ 74s
It is considered proper repair protocol to replace both the master and the slave at the same time (unless your budget does not allow it).
In the vast majority of cases, in a moist or wet climate, a hone and kit install will not last very long (ie: not worth doing). The bores are often rusted or worn out.... try to find quality new parts.
In the vast majority of cases, in a moist or wet climate, a hone and kit install will not last very long (ie: not worth doing). The bores are often rusted or worn out.... try to find quality new parts.
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- #5
From doing a search on the forum it appears the 60 and 70 kits are different? And new parts are quite expensive? Then again I'm not sure what the rebuild kits cost either.
https://forum.ih8mud.com/70-series-tech/130274-clutch-fluid-disappear.html
I took a look at the EPC and found the part numbers for the following:
Booster Kit, Clutch 04318-60040
Cylinder Kit, Clutch Master 04311-60042
Would I need both?
Also does either kit come with the following gasket? It appears to go between the cylinder assembly and the booster, I guess on the firewall?
Gasket, Clutch Master Cylinder 31415-60010
Do you ,mean different part numbers or physically different?
I know the part numbers are different but internally I thought them the same.
See these
eBay Australia Store – ROODOGS 4WD SPARES: Search results for clutch master cylinder.
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- #7
Thats a good question. I'm just going off what I read in the other thread. I went to some local parts shops today and they carry clutch master and slave cylinders. They're made by Beck/Arnley Beck/Arnley/Multiview: Buyers Guide Gonna see tomorrow how the prices compare with Toyota tomorrow.
Oh and nobody seems to list any kind of replacement for the booster, I guess a rebuild kit is the best way to go for that.
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- #8
Ok, I'm a little confused. The clutch master and slave cylinders are different for a 74 vs a 70 (according to the EPC at least). I used an '86 BJ70 to compare with my 74 since the 70 was sold here in Canada and all these part numbers ware for trucks with a clutch booster.
'86 BJ70 Master cylinder 31401-60031 (31401-60032 for an '87 BJ70)
'89 BJ74 Master cylinder 31401-60042
'87 BJ70 Slave cylinder 31470-60130
'89 BJ74 Slave cylinder 31470-60140
Does anyone have any idea what the differences could be?
'86 BJ70 Master cylinder 31401-60031 (31401-60032 for an '87 BJ70)
'89 BJ74 Master cylinder 31401-60042
'87 BJ70 Slave cylinder 31470-60130
'89 BJ74 Slave cylinder 31470-60140
Does anyone have any idea what the differences could be?
Is it something to do with RH and LH? One of them has the MC awfully close to the turbo and has a fluid line pointing away for clearance with the turbo.
We had this thread sometime back
I can only answer that for BJ70 and BJ60 and HJ60s: The clutch master for a setup with a booster is the same, right hand drive and left hand drive. same part. We just recently slapped an old master from an australian RHD HJ60 on a canadian BJ70. same part, same number, works perfectly. I do not know if that applies for the BJ74. But if the BJ74 is the same as the BJ70, you can buy the 60 series part from roodogs, and it will fit perfectly well.
cheers,
J
The clutch slaves are a different part number and the BJ70, BJ42 and BJ60 should all use the same unit - the smaller one. BJ74 is larger like the HJ and FJ... from what I have seen here.
I KNOW the BJ70 and HJ60 are the same, at least for 1985-1987 BJ70 and 1984 HJ60. That is a HJ60 with clutch booster from Central America. Maybe the canadians are different, but I doubt it.
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- #13
I talked to Steve @ EBI today and he said the clutch master between the 70 and the 74 are different due to the turbo on the 74. On the 70 a fitting comes out the front while on the 74 it comes out the side. He said the slave is the same though.
The part numbers I got from the EPC for the 74 did not appear in the Toyota dealer's system which leads me to believe the 70 and 74 are different for both the master and slave. The booster rebuild kit was $330 though
The part numbers I got from the EPC for the 74 did not appear in the Toyota dealer's system which leads me to believe the 70 and 74 are different for both the master and slave. The booster rebuild kit was $330 though
Thanks for clarifying that
The part numbers I got from the EPC for the 74 did not appear in the Toyota dealer's system which leads me to believe the 70 and 74 are different for both the master and slave. The booster rebuild kit was $330 though
We found sometime back that the part # for the BRAKE master and slaves cyl for the 6* series were all different as well but the parts themselves looked identical.
I bet this is the same with the clutch m/c and slave.
Im sure the 60 and 70 all run the same diameter cyl which means the rubber kits should be the same.
I thought the 40series is 1/8" smaller but maybe thats the earlier models
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- #15
Yeah I'm thinking that even though it might not be the most desirable option, rebuilding the master and slave might be the best way to go. But then again the the EPC shows the rebuild kit for the slave is different between a 70 and 74. I'm waiting to hear about the pricing on new cylinders from Japan.
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