Brakes Squelching

VizFish · 08-04-2014, 09:04 AM

Just purchased a rebuilt EZ Go. New brakes installed. Every time I let up on the gas of my EZ Go cart, my back brakes (mostly the back left) starts squelching as it slows. Worse, when I push on the brakes, it starts to squelch as well (more pronounced). When I let go of the gas, and the cart starts to slow, I can turn left or right with the cart (as the momentum is still pushing the cart), and the squelching/squeeking is more pronounced during those turns.

I jacked up the cart to see what was going on. When I pushed on the gas and then let the gas go....no squelching. When I pushed on the gas and then pressed the brakes....no squelching. So it appears that the noise is happening with the weight of the cart somehow causing something in the brakes to make a horrible noise. Not sure....looking for input.

kgsc · 08-04-2014, 09:31 AM

Could be a brake hub or axle bearing. Pull the rear wheels and make sure the castle nuts are tight. Should be close to 140ft lbs. If noise is still the same after that I would assume bearing.

VizFish · 08-04-2014, 10:58 AM

Thanks for the reply KGSC. I'll take a look at the castle nuts and possibly bearing.

Just curious - what do you think is causing the noise to "go away" when I push on the gas? Noise only occurs when I slow or press the brakes?

kgsc · 08-04-2014, 11:57 AM

Pushing on the gas causes torque in the hub so under load there is no slack for lack of a better word..

JohnnieB · 08-04-2014, 12:06 PM

If it isn't loose castle nuts or bearings, try adjusting the tension on the brake cables. They may be too tight.

The axle housing with the cable mounting bracket attached, rotates slightly during deceleration and braking, which tightens the tension.

My motor shifts a few inches to the rear during hard acceleration and a few inches forward during hard regen braking and with your taller tires, it may be more.
----------
Also, you have new disk brakes and the pads are going to be rubbing against the disk all the time, so after the newness is worn off the new pads and disks, the squeaks and squeals may go away.

Let us know what you find.

beach cart · 08-05-2014, 09:35 PM

My squeal was axle bearings after I added 2" spacers, the noise was worse when leaning right or left. On the ausco brakes there are sliders that pull in the pads, mine squealed some and some spray lithium fixed it. A little shot once in awhile both sides, both brakes keep them quiet. Wipe the old stuff before you spray, the grease attracts dirt.

08-04-2014, 09:31 AM	#2
kgsc Gone Wild Join Date: Dec 2009 Location: Aiken, SC Posts: 13,176	Re: Brakes Squelching Could be a brake hub or axle bearing. Pull the rear wheels and make sure the castle nuts are tight. Should be close to 140ft lbs. If noise is still the same after that I would assume bearing.

08-04-2014, 10:58 AM	#3
VizFish Not Yet Wild Join Date: Aug 2014 Posts: 2	Re: Brakes Squelching Thanks for the reply KGSC. I'll take a look at the castle nuts and possibly bearing. Just curious - what do you think is causing the noise to "go away" when I push on the gas? Noise only occurs when I slow or press the brakes?
VizFish Not Yet Wild Join Date: Aug 2014 Posts: 2

08-04-2014, 11:57 AM	#4
kgsc Gone Wild Join Date: Dec 2009 Location: Aiken, SC Posts: 13,176	Re: Brakes Squelching Pushing on the gas causes torque in the hub so under load there is no slack for lack of a better word..

08-04-2014, 12:06 PM	#5
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Brakes Squelching If it isn't loose castle nuts or bearings, try adjusting the tension on the brake cables. They may be too tight. The axle housing with the cable mounting bracket attached, rotates slightly during deceleration and braking, which tightens the tension. My motor shifts a few inches to the rear during hard acceleration and a few inches forward during hard regen braking and with your taller tires, it may be more. ---------- Also, you have new disk brakes and the pads are going to be rubbing against the disk all the time, so after the newness is worn off the new pads and disks, the squeaks and squeals may go away. Let us know what you find.

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08-05-2014, 09:35 PM	#6
beach cart Gone Wild Join Date: Dec 2011 Location: Jacksonville Beach, FL Posts: 606	My squeal was axle bearings after I added 2" spacers, the noise was worse when leaning right or left. On the ausco brakes there are sliders that pull in the pads, mine squealed some and some spray lithium fixed it. A little shot once in awhile both sides, both brakes keep them quiet. Wipe the old stuff before you spray, the grease attracts dirt.