About these Caliper Pins.....

2kwik4u · Post by **2kwik4u** » Mon Apr 30, 2007 2:53 am

SO I tore into the back of the ZR5 this weekend to inspect the parking brake. I DID NOT like having the boat drag my truck backwards down the ramp with the pedal fully depressed. I adjusted both parking drums out a bit and it worked better, but I need more. Guess I'll start looking at the cables.....

WHILE it was apart though, I noticed that the brakes are wearing unevenly on the rotors, and two of the four rear guide pins are frozen. I would've lubed them, but for the life of me I couldn't figure out how to get the bastages out of there. They didn't loosen when turned with a wrench. They didn't pry out with a prybar.

How do I get those out of there to get some new grease in there? I'd like to put the truck on stands this week, and have all 4 rotors turned, get some new pads, and lube all the guide pins. The only thing stopping me is figuring out the pins, and what it takes to get some lube to those guys.

I searched, but couldn't find the infamous write up, although I did find several references to it. Perhaps it has the info I need?

Post by **HenryJ** » Mon Apr 30, 2007 4:09 am

The pins just slide out once the caliper is removed. You can thread the bolt back in them to get a better grip if needed.
If yours are really stuck, you might try pulling the boot off and squirting some penetrating oil in there. A little turning and pulling may get them out.
If that is not enough, maybe a brass punch, or create a puller by using a piece of "all-thread" or a longer bolt and a socket that the pin can be pulled in to.

You may need to add a little heat to get things moving. That is another option.

Sorry I don't have a definitive answer. Be resourceful and good luck.

2kwik4u · Post by **2kwik4u** » Mon Apr 30, 2007 4:29 am

Thats all I need to know. Didn't want to make a "puller" for them if they were threaded in there. I noticed one side pulled out just fine, but the boot stopped it.

I'll probably pull the assembly off, and bring it into the machine shop to work on it. I hate trying to fashion tools with it attached to the truck. Trucks going to be on stands for a few days anyway.

Recommended grease is just some high temp bearing grease? Or is there something special?

Post by **HenryJ** » Mon Apr 30, 2007 4:52 am

No bearing grease.

High temp brake silicone only.

2kwik4u · Post by **2kwik4u** » Mon Apr 30, 2007 4:53 am

Cool....Thanks again.

I'll get some pics of it sitting in the driveway on 4 stands. Should make a nice "redneck driveway" type picture

Post by **HenryJ** » Mon Apr 30, 2007 4:55 am

Rednecks use plastic five gallon buckets , or cinder blocks

WVHogRider · Post by **WVHogRider** » Mon Apr 30, 2007 6:46 am

I had to drill the two slides out of my brackets on a drill press, (one on the front brakes and one on the rear of the truck).

Nothing else worked.

killian96ss · Post by **killian96ss** » Mon Apr 30, 2007 9:50 am

Now you can see why I have made such a big deal about lubing those slide pins.

I like to check mine at every oil change, and lube if necessary.

Steve

2kwik4u · Post by **2kwik4u** » Mon Apr 30, 2007 9:56 am

First check for mine. Bought the truck at 26k miles, now has 46k miles.....what a shame to have to check these so often

.....And to think oil changes used to be easy

cdnuser · Post by **cdnuser** » Mon Apr 30, 2007 10:11 am

I bought my truck used and the previous owner I guess never lubed the pins.

Even though I lube mine now, after a couple of weeks they start to lock up again. How can I fix this problem for good? Buy new calipers or pins??

killian96ss · Post by **killian96ss** » Mon Apr 30, 2007 10:23 am

2kwik4u wrote:.....what a shame to have to check these so often .....And to think oil changes used to be easy

Make sure you use a good synthetic caliper grease and NOT any other kind of grease since it will dry up real fast from the heat.

Towing a heavy load heats up the brakes a bit more than normal so if you do this very often then you should check those slide pins more frequently.

Steve

killian96ss · Post by **killian96ss** » Mon Apr 30, 2007 10:28 am

cdnuser wrote:Even though I lube mine now, after a couple of weeks they start to lock up again. How can I fix this problem for good? Buy new calipers or pins??

You shouldn't need new calipers, but make sure you use the right kind of grease (see above).

If the slide pins had a lot of corrosion on them it might help a little to use some fine grit sand paper to remove some of rust.

If they are real bad just get some new slide pins.

You should also make sure the holes that the slide pins sit in are clean by spraying some brake cleaner in there to get out some of the crud that builds up.

Steve

F9K9 · Post by **F9K9** » Mon Apr 30, 2007 11:50 am

I just got new ones when I finally got mine out. They were'nt expensive at all.

Tony · Post by **Tony** » Tue May 01, 2007 6:56 pm

When you guys say guide pins, I'm assuming it's the 4 pins (2 per caliper) than the caliper moves back and forth on?

F9K9 · Post by **F9K9** » Tue May 01, 2007 7:24 pm

Tony wrote:When you guys say guide pins, I'm assuming it's the 4 pins (2 per caliper) than the caliper moves back and forth on?

Yes, Sir!

cdnuser · Post by **cdnuser** » Thu May 17, 2007 4:01 am

2kwik4u wrote:SO I tore into the back of the ZR5 this weekend to inspect the parking brake. I DID NOT like having the boat drag my truck backwards down the ramp with the pedal fully depressed. I adjusted both parking drums out a bit and it worked better, but I need more. Guess I'll start looking at the cables.....

WHILE it was apart though, I noticed that the brakes are wearing unevenly on the rotors, and two of the four rear guide pins are frozen. I would've lubed them, but for the life of me I couldn't figure out how to get the bastages out of there. They didn't loosen when turned with a wrench. They didn't pry out with a prybar.

How do I get those out of there to get some new grease in there? I'd like to put the truck on stands this week, and have all 4 rotors turned, get some new pads, and lube all the guide pins. The only thing stopping me is figuring out the pins, and what it takes to get some lube to those guys.

I searched, but couldn't find the infamous write up, although I did find several references to it. Perhaps it has the info I need?

I watched my mechanic do it. He added a "little" heat than pryed them out. added lots of lube, and re-install. Make sure if you destroy the rubber sleave inside that you replace it or you'll get a rattling sound.

JaVeRo · Post by **JaVeRo** » Sun May 27, 2007 6:14 am

The service manual on my 01 crew says to use Silicone based lube. I had to order it from Amazon, I couldn't get it locally. The synthetic may be just fine or even better. I just don't like mixing lubes of different types.

link't -HJ

James

BADs Crew · Post by **BADs Crew** » Sun May 27, 2007 6:34 am

HenryJ wrote:Rednecks use plastic five gallon buckets , or cinder blocks

Or just use a piece of 4x4. Rednecks

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About these Caliper Pins.....

About these Caliper Pins.....

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