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Old 06-05-2006, 07:19 PM   #1
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1978 31' Excella 500
Venice , California
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Question Disc brake parts, pads and calipers

I can post the information for OEM and suppliers for the vacuum over hydralic brake calipers used in the late seventies. I had to track it all down to rebuild a couple of mine and was pleasantly surprised to find the original equipment supplier still alive and well and all the little bits and pieces available. Is there any need to do this?
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'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737
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Old 06-05-2006, 08:26 PM   #2
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disc bakes

Yes, please post the information. I am considering putting disc brakes on my 2002 model; I would like to replace the drum/electric brakes that came with the rig.
What is your thinking?
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Old 06-05-2006, 08:34 PM   #3
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Please Do!

Yes, by all means, please do.

My '77 has the disk brakes made by Ausco. I was under the impression that replacement parts were so expensive as to be prohibitive. I was looking at switching to Kodiaks.

Thanks for the info!
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Old 06-06-2006, 11:12 AM   #4
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Me too!

I too - would be curious of your findings!

Regards,
Henry
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Old 06-06-2006, 11:19 AM   #5
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Quote:
Originally Posted by JimGolden
Yes, by all means, please do.

My '77 has the disk brakes made by Ausco. I was under the impression that replacement parts were so expensive as to be prohibitive. I was looking at switching to Kodiaks.

Thanks for the info!
We have replacement parts for the original disc brake system used by Airstream many years ago.

The sync valves are rebuilt for you. New sync valves are no longer available.
We have all the repair parts for that valve. After it's rebuilt, it must be put on a test bench, to assure it's proper performance.

The only expensive part is the pistons.

The rest are comparable to newer systems.

Andy
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Old 06-06-2006, 11:31 AM   #6
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Orange , California
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Quote:
Originally Posted by Inland RV Center, In
We have replacement parts for the original disc brake system used by Airstream many years ago.

The sync valves are rebuilt for you. New sync valves are no longer available.
We have all the repair parts for that valve. After it's rebuilt, it must be put on a test bench, to assure it's proper performance.

The only expensive part is the pistons.

The rest are comparable to newer systems.

Andy
Andy,

What is a "sync valve"?

Bill
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Old 06-06-2006, 12:23 PM   #7
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Originally Posted by wkerfoot
Andy,

What is a "sync valve"?

Bill
Synchronizing valve.

It's located at the bottom of the booster assembly.

You can check it quickly as follows.

Have the trailer vacuum supply plugged into the tow vehicle, with the engine running.

Take the top of the plastic cover off.

Put your ear as close to the round intake filter. It's about 4 inches in diameter.

If the sync valve is OK, you will hear nothing.

If the valve is defective, however so slightly, you will hear an air "hissing: sound.

Should your hear that sound, it's telling you that the sync valve is leaking, therefore it will not perform as is should, namely the braking will be weak.

If the sync valve is leaking, you simply remove it, send it to us for overhaul, and perfomance testing.

You can also, completely replace the booster assembly, and install an Actibrake system. Should you wish to do that, you can install the Actibrake under the front lounge, instead of on the A-frame, keeping it out of the weather.

Andy
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Old 06-06-2006, 12:38 PM   #8
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Quote:
Originally Posted by Inland RV Center, In
Synchronizing valve.

It's located at the bottom of the booster assembly.

You can check it quickly as follows.

Have the trailer vacuum supply plugged into the tow vehicle, with the engine running.

Take the top of the plastic cover off.

Put your ear as close to the round intake filter. It's about 4 inches in diameter.

If the sync valve is OK, you will hear nothing.

If the valve is defective, however so slightly, you will hear an air "hissing: sound.

Should your hear that sound, it's telling you that the sync valve is leaking, therefore it will not perform as is should, namely the braking will be weak.

If the sync valve is leaking, you simply remove it, send it to us for overhaul, and perfomance testing.

You can also, completely replace the booster assembly, and install an Actibrake system. Should you wish to do that, you can install the Actibrake under the front lounge, instead of on the A-frame, keeping it out of the weather.

Andy
Andy,

Thanks,

Bill
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Old 06-06-2006, 01:22 PM   #9
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Just wondering???

Andy,

How does the older disc system compare to the Kodiak system - I know you sell both?

Please inform,
Henry
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Old 06-06-2006, 01:26 PM   #10
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Quote:
Originally Posted by axleman
Andy,

How does the older disc system compare to the Kodiak system - I know you sell both?

Please inform,
Henry

We DO NOT SELL BOTH.

Some parts only, for the old system.

Andy
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Old 06-06-2006, 01:28 PM   #11
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Quote:
Originally Posted by Inland RV Center, In
We have replacement parts for the original disc brake system used by Airstream many years ago.
Andy
Andy,

Sorry - I misunderstood this statement!

Cheers,
Henry
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Old 06-06-2006, 04:50 PM   #12
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Info

Here's the info on older Ausco calipers used on the late '70s. I bought parts through a jobber-Berenson Fluid Power. Ausco can give you jobbers.
Attached Files
File Type: pdf Auscotyp.pdf (136.7 KB, 136 views)
File Type: pdf ExcellaB.pdf (1.14 MB, 115 views)
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'78 Excella 500,"The Silver Pullit". vacuum over hydraulic disc brakes, center bath, rear twin. '67 Travelall 1200 B 4X4 WBCCI 3737
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Old 06-06-2006, 08:24 PM   #13
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Thanks!

Excella CM,

Thanks for sharing - that's good information.

Regards,
Henry
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Old 06-06-2006, 10:14 PM   #14
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Hello Excella CM,

I also tow my airstream with a 68 travelall 1100c 4x4 5 speed overdrive.Put up some pics on the vintage tow vehical forum .Id like to see your rig.

Scott of scottanlily
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