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  #1  
Old 11-30-2017, 08:21 AM
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daddyman daddyman is offline
 
Join Date: Jan 2014
Location: Fredericksburg, Virginia
Posts: 198
Default Not sure about brakes

All,
I noticed both sides( Rt + Lt) seem to not be releasing completely.
I have relatively new pads (Grove).

Visual inspection looks fine.

When I jack up one side, the main wheel just doesn't seem to roll as freely as it used to.

I've never experienced this issue before.

Any thoughts?

Daddyman
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  #2  
Old 11-30-2017, 08:41 AM
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bkervaski bkervaski is offline
 
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 449
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Not an expert but fluid level, bent line, air in the system, worn out springs, tension/torque on pedal bolts (off the top of my head). I would empty the system and re-bleed it, easiest way to start troubleshooting.
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  #3  
Old 11-30-2017, 11:52 AM
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n82rb n82rb is offline
 
Join Date: Jan 2007
Location: fort myers fl
Posts: 643
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pull the calipers and make sure the pins are clean and corrosion free. I put a light coat of lubricant on them. if the pins get gunked up, the calipers cannot float like they should.

bob burns
RV-4 N82RB
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  #4  
Old 11-30-2017, 01:15 PM
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smokyray smokyray is offline
 
Join Date: Jan 2005
Location: TX32
Posts: 1,637
Default Gimme a brake....

Quote:
Originally Posted by n82rb View Post
pull the calipers and make sure the pins are clean and corrosion free. I put a light coat of lubricant on them. if the pins get gunked up, the calipers cannot float like they should.

bob burns
RV-4 N82RB
Amen to what Bob said.
Additionally, take some fine sandpaper, roll it up where it will go inside the pin holes and lightly hone the holes. Then do the same on the pins. LPS 3 or equivalent on the pins and reassemble.

Should solve your issue...
V/R
Smokey

Last edited by smokyray : 12-01-2017 at 03:36 PM.
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  #5  
Old 12-01-2017, 11:21 AM
664781 664781 is offline
 
Join Date: Jan 2005
Location: Powder Springs, Ga
Posts: 267
Default Dragging Brakes

Make sure your brakes are fully releasing. Pull the top of your pedals back and see if this makes a difference. If so search springs on master cylinders. A lot of good info, that fixed mine.
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  #6  
Old 12-01-2017, 12:24 PM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 826
Default Calipers and pins..

As others have said, and I have seen it plenty,the pins need cleaned/lubed, and the piston may have light corrosion, which usually shows after pad replacement when it is pushed in deepest. Nothing "holds them out", but they need to be free to release completely.
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  #7  
Old 12-01-2017, 12:33 PM
WAM120RV WAM120RV is offline
 
Join Date: Dec 2006
Location: Coventry. England
Posts: 577
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Hi,

Brakes stick on because of

1. Corrosion or **** in the slider system as explained by Bob.

2. Corrosion or debris between the calliper piston and bore.....new seals are must to replace when you push the piston out.

3. Seizure or partial seizure of the pedal which again could be corrosion between the pedal and bearing surface. The remedy here if this is the problem is to strip and clean, there is no need for springs if this is clean, it just adds weight and complexity and while relieving does not cure the problem.

4. I am assuming that you have fitted a different type of pad to the standard shoe, if not and you have changed the shoe there could be an interference fit between the shoe an the sliders, which could be cured by a bit of filing.

Having said all that the most likely are 1 and 2. Do not start by bleeding your system this will cure nothing and will not trouble shoot anything.

Actually I am currently dealing with this same problem on a motorbike, seized pistons and sliders. This is quite a frequent problem on bikes and I had it once on my 4.
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  #8  
Old 12-01-2017, 02:54 PM
EXflyer EXflyer is offline
 
Join Date: Jan 2016
Location: Chiloquin OR
Posts: 20
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Would not use any abrasive on pins or bore, quite often they are coated and any removal of it will cause corrosion. I would clean them only all gunk should come off easily. and the bore do the same. I used to service them that way. We used a silicone lube I think or anti seze on them been a while.
Also using anything more than 400 grit is leaving scars in them that could cause additional gunk to build up.

Another item I ran into is the leading edge of the pad should have a slight champfer on it so that it will not tend to tip or bind when applied. Have found that problem not on AC but on auto or trucks at times. Just a slight champfer to take off the sharp corner.

Just the way I used to do it on certified AC not cast in stone. Boyd in Chiloquin OR under the RV highway.

Last edited by EXflyer : 12-01-2017 at 02:57 PM.
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