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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > P32 sticking rear caliper

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jspringator

Versailles, KY 40383

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Posted: 07/11/18 04:43pm Link  |  Quote  |  Print  |  Notify Moderator

Ended up getting the fronts from Mill Supply. Precision Sales never emailed me back. With shipping, both were right at $100. I'll save the old hoses in the event I try the stainless experiment.

I plan to get the calipers inspected, rebuilt if necessary, slider pins lubed with Permatex 85188 Ultra Disc Brake Caliper Lube, brake system flushed with Valvoline SynPower brake fluid (3 quarts).

I guess my only question is whether the calipers can be adequately inspected.


Jim & Sherri
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Posted: 07/11/18 08:53pm Link  |  Quote  |  Print  |  Notify Moderator

jspringator wrote:


I guess my only question is whether the calipers can be adequately inspected.


Kind of. Pull the dust boot back from the caliper piston and see if there is any dust, dirt, crud, rust if metal pistons, etc built up on the piston. If clean, see if the piston will push back in the bore with ease. If clean and the piston pushes back with ease, I would reuse it. If dirty or sticky, rebuild or replace.

Richard


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tropical36

Southwest Florida_USA

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Posted: 07/12/18 01:02pm Link  |  Quote  |  Print  |  Notify Moderator

jspringator wrote:

Ended up getting the fronts from Mill Supply. Precision Sales never emailed me back. With shipping, both were right at $100. I'll save the old hoses in the event I try the stainless experiment.

I plan to get the calipers inspected, rebuilt if necessary, slider pins lubed with Permatex 85188 Ultra Disc Brake Caliper Lube, brake system flushed with Valvoline SynPower brake fluid (3 quarts).

I guess my only question is whether the calipers can be adequately inspected.

Since I had most of it all apart, anyway, I just replaced the calipers with rebuilt from NAPA and not all that expensive.
Was still working as good as new, when we sold the coach, two years ago.


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jspringator

Versailles, KY 40383

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Posted: 07/13/18 12:01pm Link  |  Quote  |  Print  |  Notify Moderator

Almost everything is in. The Permatex 85188 Ultra Disc Brake Caliper Lube has been ordered, as has the Castrol 12614 Dot 4 Synthetic Brake Fluid. Apparently the Valvoline SynPower is no longer available. This stuff is for high temp applications; like racing or a motorhome in the mountains.

tropical36

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Posted: 07/14/18 10:39am Link  |  Quote  |  Print  |  Notify Moderator

jspringator wrote:

Almost everything is in. The Permatex 85188 Ultra Disc Brake Caliper Lube has been ordered, as has the Castrol 12614 Dot 4 Synthetic Brake Fluid. Apparently the Valvoline SynPower is no longer available. This stuff is for high temp applications; like racing or a motorhome in the mountains.

Valvoline SynPower is motor oil, is it not?
As for a higher temp. compatible brake fluid, try 5.1, although I don't see the need for it.... Click 5.1

jspringator

Versailles, KY 40383

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Posted: 12/14/18 05:24pm Link  |  Quote  |  Print  |  Notify Moderator

Got everything in last summer. Had the mechanic pull all the pins and lube with the Permatex lube. They also had to replace one of the rigid lines too. Brakes are much improved, but they still take some effort.

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