Master cylinder going bad?

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hemihead2
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Master cylinder going bad?

Post by hemihead2 » Fri May 25, 2018 1:00 pm

<t>I have a recently increasing instance of calipers dragging once they warm up (I.e after a few hard stops). I've replaced all 4 of them so far and have even backed off the parking brake to the point it hardly functions. My problem is that my rear caliper will drag (I.E. The wheel gets hot and I can smell burning) but on a different day a front caliper will do the same thing. They all release given a cooling off period though. None have ever hung up completely- yet. At some point I have to think that the braking system itself is the culprit, no? My truck has 162k on it but I drive it daily and can take it anywhere. I've replaced everything as needed but the master cylinder currently has my attention. Has anyone else experienced this? All the rotors and pads have been replaced over the last 5k miles or so but it continues to jerk to one side or the other with a panic stop. Any ideas? Thanks!</t>

Colibri
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Re: Master cylinder going bad?

Post by Colibri » Fri May 25, 2018 2:04 pm

I had to replace my master cylinder recently for dragging calipers, it’s pretty straight forward. If I remember correctly oem part was around 200 ish maybe? Make sure you bleed the system thoroughly though. And you’ll need to bench bleed the new master cylinder first.
Central Texas and Houston area
2009 5.7 auto quadcab
Carli 3” coils deaver leafs 3” kings with 4 tube bypass rear and fr/rr hydro bumps
Howe steering pump and gear with hydraulic ram assist
Custom tube bumpers and white knuckle sliders
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olyelr
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Re: Master cylinder going bad?

Post by olyelr » Fri May 25, 2018 3:36 pm

Have you ever changed/flushed the brake fluid?
2016 Ram Power Wagon Laramie - Granite Crystal Metallic - Ramboxes :patriot:

TwinStick
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Re: Master cylinder going bad?

Post by TwinStick » Sun May 27, 2018 10:43 pm

I had to replace the calipers on mine when that started happening. No more issues. I did the PowerStop one click brake kit. 4 rotors, shiny red calipers & pads all the way around. Expensive but truck stops a LOT better than it did.
In WNY State. 2008 Red QC PW G56. No lift yet, stock size tires. It pulls an 18' 2016 Starcraft AR One Extreme, 3500 lbs.
Load Pro 35 helper springs. 2015 A.R.E. MX Series custom cap. PCP front diff cover protector. Mag-Hytec 6 qt rear diff cover. K&N replacement air filter only. Dual grounded throttle body. Winch TPC bypass. Fab Four rear bumper. DURA BAK lined rocker protection. And a bunch of new front end stuff.

G-56 Gear ratios: 1st) 6.29:1 2nd) 3.48:1 3rd) 2.10:1 4th) 1.38:1 5th) 1.0:1 6th) 0.79:1 Rev 6.29:1 --- = 78.01613:1 Crawl Ratio
-------------------------5.94:1--------3.28:1-------1.98:1-------1.31:1-------1.0:1-------0.74:1-----5.42:1 ---- = 73.675:1
545RFE----------------3.0:1---------1.67:1--------1.0:1--------0.75:1-------0.67:1------------------3.0:1 -------=37.21:1

2013+ 32.47 crawl ratio...............Can you see the trend ??????????????

waldo
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Re: Master cylinder going bad?

Post by waldo » Mon May 28, 2018 7:34 am

Might have a bad flex line on one or more wheels.
2007 and 2016 Power Wagons

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