Front brake pad replacement.
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Champion
Joined: Nov 2005
Posts: 2,875
Likes: 1
From: North Eastern England
Front brake pad replacement.
When I replaced my 03 Hemi QC 1500 front pads, I noticed that the inboard pads were more worn than the outters.:dunno:
When I replaced the pads 20K miles ago, I know I greased up the caliper slider bolts after thoroughly cleaning them etc.
This time, I noticed on dismantling, that the sliders were not sliding??
Anyhow, I freed them all off and packed them with high temp copper slip grease.
They slid great but, on leaving them for about 5 minutes they felt very difficult to move again?????
The sliders are all rust free and clean, as is everything in the rubber boot that surrounds them.
Any ideas?
Is the grease stopping them moving due to some kind of hydrostatic coupling effect between the tight fit of these pins and the grease?
Will I be OK?
Also, is about 20K the right sort of mileage for replacing pads on these front end heavy trucks?
I do mostly town/city driving.
A little help please from my more experienced American cousins.
Al.
When I replaced the pads 20K miles ago, I know I greased up the caliper slider bolts after thoroughly cleaning them etc.
This time, I noticed on dismantling, that the sliders were not sliding??
Anyhow, I freed them all off and packed them with high temp copper slip grease.
They slid great but, on leaving them for about 5 minutes they felt very difficult to move again?????
The sliders are all rust free and clean, as is everything in the rubber boot that surrounds them.
Any ideas?
Is the grease stopping them moving due to some kind of hydrostatic coupling effect between the tight fit of these pins and the grease?
Will I be OK?
Also, is about 20K the right sort of mileage for replacing pads on these front end heavy trucks?
I do mostly town/city driving.
A little help please from my more experienced American cousins.
Al.
Hall Of Fame
Joined: Mar 2009
Posts: 19,168
Likes: 23
From: South GA
I think replacing pads at 20k depends on the pads and how hard you use them. Obiously when I pull my 16ft trailer I have more brake dust which means Im wearing the pads more. So I think it is possible. In almost every case where I have changed pads (not just on my truck) the pads are worn down on one side more than the other. As for the grease stopping them from sliding rather than helping? IDK on that one but I would think they pressure and force from the pistons would be greater. Thats a good question and idea though. Ive only changed my pads once on my truck and unfortunaly, I didnt write down my mileage.
Captain
Joined: Mar 2007
Posts: 680
Likes: 0
Over the years I've noticed some vehicles wear out the inboard brake pads much faster than the outboard. It's nothing to worry about.
Front brakes always wear out faster than the rears, but they should last more than 20K miles. Perhaps your calipers are sticking a little? I consider calipers to be wear items, so if yours are six years old it wouldn't hurt to replace them with rebuilt ones. Make sure you use a good brake grease on the friction points/sliding areas. Brake grease is usually black, very thick, and smells nasty like gear oil. I wouldn't substitute any other grease.
Front brakes always wear out faster than the rears, but they should last more than 20K miles. Perhaps your calipers are sticking a little? I consider calipers to be wear items, so if yours are six years old it wouldn't hurt to replace them with rebuilt ones. Make sure you use a good brake grease on the friction points/sliding areas. Brake grease is usually black, very thick, and smells nasty like gear oil. I wouldn't substitute any other grease.