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Brakes hung up #4518175
09/16/17 09:04 PM
09/16/17 09:04 PM
Joined: Apr 2012
Posts: 2,630
West Michigan
buck91 Offline OP
buck91  Offline OP
Joined: Apr 2012
Posts: 2,630
West Michigan
SO this was weird. Did my wife's Explorer (2014) brakes about a week ago (one tank of gas on the new parts). Other than an a little initial brake odor during the official wagner break-in procedure they have been great. Smooth, quiet and powerful with no pulling or other problems noted.

Today, all of that remained true but after driving approx 8 miles from a cold start there was an obvious odor of hot brakes. Rear wheel hubs where HOT to the touch and letting the car roll down the drive in neutral produced a nice brake dragging sound. This was a nice, easy drive with the family in car. I tried pumping the parking brake numerous times and it still made the dragging noise. After a few hours at our destination, we drove home via approximately the same route (also non-spirited). Ambient temps had decreased from sunny and mid 80's to dusky and mid 70's.

NO brake odor on the return trip, wheels cool to touch and no dragging noise in neutral on driveway. My primary suspicion is insufficient clearances for the brake pad ears (which is a known issue) despite my aggressive cleaning of the caliper bracket with a wire wheel during the job. But if this was the case, why/how did the problem seemingly develop and then go away on its own? Other thoughts? I plan to pull them apart on my next day off, but I really felt like a did a very comprehensive brake job on this car. Possible symptom of hose damage? I did have to move the calipers around A LOT when screwing the pistons back in...


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Brakes hung up [Re: buck91] #4518185
09/16/17 09:09 PM
09/16/17 09:09 PM
Joined: Mar 2008
Posts: 5,873
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,873
South Florida
Its your caliper PISTON that causes the problem. If you didn't clean the piston, then this will happen quite frequently on a new brake job. The piston is pushed all the way out when the pads are thin, and exposed to dirt, grime, salt, ect. Then you push all the dirt into the calipers when compressing the piston back in, and there is your problem.


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
12 Suzuki S40 Rotella 15W40
10 Acura TSX 2.4 PZL Plat 5W30
06 GMC Sierra Nextgen 10W30


Re: Brakes hung up [Re: buck91] #4518196
09/16/17 09:19 PM
09/16/17 09:19 PM
Joined: May 2015
Posts: 967
Missouri
gabriel9766 Offline
gabriel9766  Offline
Joined: May 2015
Posts: 967
Missouri
The rear brakes are actuated right? Are the boots twisted on the calipers and are the sliders lubed up?


2015 Malibu LT 2.5L PPPP 0w20 46.1K
2007 Escape XLT 3.0L 5Q STHM 5w30/1Q MC full syn 5W20 115K
2010 Fusion SE 2.5L MC 0w20 110K
2008 Escape XLT 2.3L MC 5w30 187K
2007 Fusion SE 2.3L- 173.5K STHM 0W20
Re: Brakes hung up [Re: buck91] #4518199
09/16/17 09:27 PM
09/16/17 09:27 PM
Joined: Apr 2012
Posts: 2,630
West Michigan
buck91 Offline OP
buck91  Offline OP
Joined: Apr 2012
Posts: 2,630
West Michigan
The piston boots? I don't think so I was pretty careful. Sliders definitely lubed.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Brakes hung up [Re: bubbatime] #4518212
09/16/17 09:41 PM
09/16/17 09:41 PM
Joined: Apr 2012
Posts: 2,630
West Michigan
buck91 Offline OP
buck91  Offline OP
Joined: Apr 2012
Posts: 2,630
West Michigan
Originally Posted By: bubbatime
Its your caliper PISTON that causes the problem. If you didn't clean the piston, then this will happen quite frequently on a new brake job. The piston is pushed all the way out when the pads are thin, and exposed to dirt, grime, salt, ect. Then you push all the dirt into the calipers when compressing the piston back in, and there is your problem.


That would make sense of the piston wasn't protected by the boot... which it is.


2011 F150 4x4 5.0L
1996 Mustang GT 5spd/ragtop
Re: Brakes hung up [Re: buck91] #4518262
09/16/17 11:17 PM
09/16/17 11:17 PM
Joined: Sep 2004
Posts: 7,611
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,611
Marshfield , MA
Originally Posted By: buck91
Originally Posted By: bubbatime
Its your caliper PISTON that causes the problem. If you didn't clean the piston, then this will happen quite frequently on a new brake job. The piston is pushed all the way out when the pads are thin, and exposed to dirt, grime, salt, ect. Then you push all the dirt into the calipers when compressing the piston back in, and there is your problem.


That would make sense of the piston wasn't protected by the boot... which it is.
The boot does keep a good amount of dirt out. Most of the water too. But not all. Rust around the top of the bore where the pad sits is the cause. Its an easy job to pop out the puck to scrub the rust and dirt away. Pop the puck in slathered in Syl Glyde. It used to be called "maintenance" grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Brakes hung up [Re: buck91] #4518266
09/16/17 11:25 PM
09/16/17 11:25 PM
Joined: May 2015
Posts: 967
Missouri
gabriel9766 Offline
gabriel9766  Offline
Joined: May 2015
Posts: 967
Missouri
Originally Posted By: buck91
The piston boots? I don't think so I was pretty careful. Sliders definitely lubed.
did you have to twist the caliper with a tool or push it in like a regular piston?


2015 Malibu LT 2.5L PPPP 0w20 46.1K
2007 Escape XLT 3.0L 5Q STHM 5w30/1Q MC full syn 5W20 115K
2010 Fusion SE 2.5L MC 0w20 110K
2008 Escape XLT 2.3L MC 5w30 187K
2007 Fusion SE 2.3L- 173.5K STHM 0W20

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