NEED HELP 1986 BJ74 DIAPHRAGM RUBBER HOLE OR REPAIR IDEAS

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rebalyota

rebalyota

10 Year
Joined
Aug 26, 2015
Threads
2
Messages
4
Location
California
Hey everyone!!

I have a 1986 BJ74(turbo diesel) 13BT engine..
The rubber piece in my diaphragm has a hole. My first choice would be to find a new rubber piece and my second choice would be to find a way to repair it.
Also, if I end up finding the rubber piece or if someone helps finding the rubber piece I am looking to replace the o-ring as well.

Does anyone know where I can find the rubber piece and o-ring?

Any suggestions on repairing the hole?

I also have attached a picture of my diaphragm.

bj74.webp
 
Thank you, I took a look at that website and it looks like they don't have it for the 13BT engine, I will go ahead and give them a call though.
 
Check with your local diesel injection shops that repair Denso. They should be able to get one.
You can try Home - Fred Holmes Fuel Injection, I got a spare Denso one for my 3B from them (half the price of Toyota too).
 
rebalyota said:
Hey everyone!!

I have a 1986 BJ74(turbo diesel) 13BT engine..
The rubber piece in my diaphragm has a hole. My first choice would be to find a new rubber piece and my second choice would be to find a way to repair it.
Also, if I end up finding the rubber piece or if someone helps finding the rubber piece I am looking to replace the o-ring as well.

Does anyone know where I can find the rubber piece and o-ring?

Any suggestions on repairing the hole?

I also have attached a picture of my diaphragm.
Click to expand...

That rubber thing is part of your BOOST COMPENSATOR.

And Toyota doesn't appear to list it separately. (I see only 22021-58360 for the Boost Compensator Assembly which appears to contain that part inside.)

But the O-ring should be simple. It's 90099-14069.

Sorry .... I'm not much help...

:beer:
 
Looking for the same part referenced at the top of this thread. 13b-t injector pump diaphragm. There's a link to a diaphragm for the 3B application but no clarification as to whether the this same diaphragm fits the 13b-t application. I apologize in advance for my ignorance I'm new to diesel landcruisers (y)
 
Purchased the injector pump diaphragm from 4 wheel auto... Not the correct part. Really would like to get up and going. an anyone direct me to the correct part/source?
 
Going to put the follow up her here as I'm sure someone in the future will have a similar issue. The part in question is for the accelerator pump (diaphragm) and the toyota part number is 22542-54260.
 
jonnyz said:
Going to put the follow up her here as I'm sure someone in the future will have a similar issue. The part in question is for the accelerator pump (diaphragm) and the toyota part number is 22542-54260.
Click to expand...

Cool...

22542-54260 DIAPHRAGM, BOOST COMPENSATOR

Fits:
2LT
1HZ
1KZT
1HDT
1HZ
15BFT
2CT
1KZT
1HD
1CTL
2CTL
14BT

Now I wonder why I can't find it listed in any of the parts diagrams? It's almost like it's a secret part that they don't want most people to know they stock..

Edit: OK. Looking at an LJ70 Land Cruiser and the 2LT engine I can find it easy enough. But I had been looking at a 13BT before and this part isn't listed as suitable for a 13BT.

If you've bought this for a 13BT, does it match the old one and fit properly?



:beer:
 
Last edited:
That's it!
Boost compensator diaphragm.
I had so many different names running through my head that I couldn't recall the correct name.

I spent so much time surfing and researching this part. Found the assembly but never the specific part. I just started ordering every diaphragm I could find that was made around that time and fortunately, I only had to buy 3 before finding the correct part.
Now to get er in and finally drive this thing ;)
 
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