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Old 07-03-2016, 04:49 PM   #1
PKI
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Dexter disk brake

What is your experience with the Dexter disk brake components? Have you had any problems with the dual piston fixed location calipers?

Your input and experience is appreciated. Pat
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Old 07-03-2016, 05:24 PM   #2
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I have had my Carlisle/ Kodiak combo in service 10 years now. I grease the calipers annually and renew my pads when needed which has been precisely twice in 200000 miles. You can get the pads at ANY auto parts place in the USA. About $60 for all 3 axles with caramic pads.
Forgot to mention... renee the fluid with Castrol GTLMA yearly too.
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Old 07-03-2016, 06:35 PM   #3
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What is your experience with the Dexter disk brake components? Have you had any problems with the dual piston fixed location calipers?

Your input and experience is appreciated. Pat
Pat,

I have Dexter 4 piston brakes on my '07. Here's my .02$.

Weak point, difficult bleeding if you do not incorporate inboard bleeding in the line somehow. AS turned the line right into the 3/8-24 to M10 adapter it is not the best for independent inboard bleeding. I rigged up a different hose and steel line combo to allow inboard bleeding. Works great. AS's latest hose also allows inboard bleeding.

Piston dust boots. If these split they can allow water in and the steel piston to cast iron caliper can start to rust and stick, causes dragging brake, heat and problems. Inspect couple times per year and replace if required.

The steel piston just moves in and out under pressure, the seal is in the caliper. I think it would take a lot of corrosion to make a caliper casting unusable, but corrosion on the steel piston ain't good that is the sealing surface.

I have replaced piston seals and dust boots, if you're mechanical, not a huge task but bleeding can make up for it.

Caliper to pad contact points, inspect for corrosion, clean up, apply a light film of caliper grease. Objective is to make sure pads don't hang up, drag and heat up.

IR temp gun is a great tool to monitor these for issues.

When done you have high performance 4 piston disc brakes.

Gary
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Old 07-03-2016, 09:51 PM   #4
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-- snip -- have Dexter 4 piston brakes -- snip -- Weak point, difficult bleeding if you do not incorporate inboard bleeding -- snip --Piston dust boots. -- snip --Caliper to pad contact points, -- snip -- you have high performance 4 piston disc brakes. Gary
Thanks for the good info on the calipers. Very much appreciated. Pat
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Old 07-04-2016, 05:24 AM   #5
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Pat,

Several good discussion threads exist. A bit of inspection, a bit of hands on, ZERO air in the lines, a EOH compatible controller and you got real brakes.

That ZERO air is not a gimmie, takes some effort.

Holler if I can try to assist you.

Gary
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Old 07-04-2016, 12:47 PM   #6
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Really appreciate the info. Finding the threads takes a bit of searching.

I find that the Dexter calipers are four piston design on the 12 in and larger diameter applications, but it looks like the 10 in application uses a single piston caliper. That makes the improved tech of the multi-piston calipers unavailable for my FC23FB application since it is fitted with 5x4.5 BC hubs.

Now to decide if the standard tried and true components make more sense than a custom configuration. Anyone for a Brembo Airstream. Seems like the perfect example of an unjustified investment and even more unjustified effort.

Thanks - travel safe. Pat
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Old 07-04-2016, 01:02 PM   #7
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Light reading:

Disc brake discussion. http://www.airforums.com/forums/f439...on-128545.html
Disc brake pressure vs. time.http://www.airforums.com/forums/f439...ime-96724.html
AS Hose recall. http://www.airforums.com/forums/f439...all-98740.html

Gary
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