Front Brake Cylinder AC Delco 18G94 Rebuild Kits - Out of Stock

[richw]

A quick heads up if you are using the Isuzu rear wheel cylinder for donor front wheel cylinder parts.
I found a single cylinder in St Thomas, USVI.
Cheap as chips and still available stateside.
You cannot use your original pistons with the Isuzu seals.
The Isuzu's pistons are smaller but they do seem to work just fine. Even the dust caps fit.
If you are ordering new cylinders from 4x4 in Australia be aware they take ages to get to you.
2 months and I’m still waiting.
Maybe you can contact them directly and get them sent by Courier? Their default shipping from an e bay order is Australia Post.

[richw]

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Here you can see the size difference of the pistons. I should have removed the dust caps for a better photo.
Interestingly the shorter Isuzu piston will be sealing on a previously unused or lightly used section of the cylinder wall.
The Isuzu piston is sealing about 10mm further out of the cylinder.
If you have pitting those pits may not be a problem?
Just a thought!

Several members have posted how important accurate brake shoe adjustment is to get a decent high pedal.
That is SO true, after a big refit use the brakes hard and re adjust once they are bedded in.

[Esteban]

A quick heads up if you are using the Isuzu rear wheel cylinder for donor front wheel cylinder parts.
I found a single cylinder in St Thomas, USVI.
Cheap as chips and still available stateside.
You cannot use your original pistons with the Isuzu seals.
The Isuzu's pistons are smaller but they do seem to work just fine. Even the dust caps fit.
If you are ordering new cylinders from 4x4 in Australia be aware they take ages to get to you.
2 months and I’m still waiting.
Maybe you can contact them directly and get them sent by Courier? Their default shipping from an e bay order is Australia Post.

Excellent information! Thanks.
I ordered just the seals last week and arrived today (the seal kit I posted cost about the same as the complete cylinder ). They include the dust cap. I only measured the outside of the seals to confirm they are 1 inch in diameter, same as the Patrol.
Update: I received yesterday just the seal kit (seal and dust cap) The seal is exactly the same but the dust cap is smaller. I also found that Rockauto is selling the rear Isuzu wheel cylinders very cheap.

The possibility of using just the piston with seal and dust cap looks very interesting. Please let us know what you did. Thanks,

[dmo67patrol]

I've used the Protex cylinders before, no issues.

I might have some of the cups to rebuild the cylinders with. Although I don't think I have the covers.

Hi River Patrol,

My 67 Patrol also needs all new cylinders. Did you get 6 new cylinders, 2 for each front wheel and 1 each for the back wheels?
My best friend gave me the patrol, and he rebuilt the brakes 5 years ago, and rarely drove the Patrol. He also lives at the ocean, so I'm assuming they just rusting in the ocean air......

So you would recommend Protex....? I'm so new at this vehicle, but not afraid to get it running......it's the stopping that scares me!

[dmo67patrol]

I've used the Protex cylinders before, no issues.

I might have some of the cups to rebuild the cylinders with. Although I don't think I have the covers.

Hi River Patrol. The sites that I'm seeing list the years "1968" to "1973. I'm assuming the Protex cylinders would work on a "67" Any thoughts on this?
I know you are busy, and I always appreciate your help. My shoes are good, but the cylinders have a lot of problems.......

[RiverPatrol]

I've used the Protex cylinders before, no issues.

I might have some of the cups to rebuild the cylinders with. Although I don't think I have the covers.

Hi River Patrol. The sites that I'm seeing list the years "1968" to "1973. I'm assuming the Protex cylinders would work on a "67" Any thoughts on this?
I know you are busy, and I always appreciate your help. My shoes are good, but the cylinders have a lot of problems.......

The wheel cylinders unfortunately always seem to be the weakest component on a Patrol.

Yes, you will need six wheel cylinders for all 4 wheels.

The 1968 - 1973 style fits all US Patrols.

[dmo67patrol]

Thanks a million, I do appreciate the info River Patrol.

I will contact some of the cylinder re-sellers and see what I can come up with.

Thank you again. I know you are busy and have a million posts here to deal with.

Have a great day today.
dmo

[Esteban]

Hi River Patrol,

My 67 Patrol also needs all new cylinders. Did you get 6 new cylinders, 2 for each front wheel and 1 each for the back wheels?
My best friend gave me the patrol, and he rebuilt the brakes 5 years ago, and rarely drove the Patrol. He also lives at the ocean, so I'm assuming they just rusting in the ocean air......

So you would recommend Protex....? I'm so new at this vehicle, but not afraid to get it running......it's the stopping that scares me!

Why don't you try rebuilding the brake cylinders? It's something that is easy to do, depending of course on the state of the cylinders. They can be polished and new seals installed.

Do you have pictures at hand of the cylinders?

[dmo67patrol]

Hi River Patrol,

My 67 Patrol also needs all new cylinders. Did you get 6 new cylinders, 2 for each front wheel and 1 each for the back wheels?
My best friend gave me the patrol, and he rebuilt the brakes 5 years ago, and rarely drove the Patrol. He also lives at the ocean, so I'm assuming they just rusting in the ocean air......

So you would recommend Protex....? I'm so new at this vehicle, but not afraid to get it running......it's the stopping that scares me!

Why don't you try rebuilding the brake cylinders? It's something that is easy to do, depending of course on the state of the cylinders. They can be polished and new seals installed.

Do you have pictures at hand of the cylinders?

Hi, thanks for your reply.....Well, I purchased the rear cylinders already.......but I'd be up for the front cylinders and rebuilding them......I'll jack it up tomorrow AM and take some pictures, and I would really (and do appreciate) appreciate if you could send me to the right place for rebuilding the fronts......are the rebuild kits the same for all four cylinders? Again, thank you....I am grateful for all the help here.......the engine is running pretty smoothly....and I'm just on a mission to clean the rust from underneath......and obviously, the brakes are the most important now. The emergency brake operates perfectly. So, tomorrow i'll get the right front wheel off and send pics.....

[dmo67patrol]

Here are pics of the right front passenger side Brake Cylinders. Yes, I'd love to rebuild them but of course, I would need to correct rebuild kit.......