Really tight driver side caliper - The 1947 - Present Chevrolet & GMC Truck Message Board Network

reed62 · 01-20-2017, 12:27 PM

Hey all,

I finished installing the CPP disc brake conversion and the driver side caliper is really snug and does not allow the rotor to spin easily. The passenger side is fine, it spins with a slight amount of drag as to be expected. The driver side requires quite a bit of muscle to rotate it. I have removed the caliper and used a "C" clamp to seat the piston into the bore. I thought it might have some tension that had pushed it out of the bore, but it is as far back as it can go. I know I don't want to drive it for a long period of time because it will probably heat the rotor up substantially.

Has anyone else run across this with their conversion?

**PGSigns** · 01-20-2017, 08:34 PM

Does the rotor turn fine when the caliper is off? If it does you should be fine. When you cycle the brakes some on the first drive the calipers will find there spot and align to where they need to be.
Jimmy

Grounded63 · 01-21-2017, 01:49 AM

Was the caliper a tight fit / hard to get on the spindle ? If so, it probably isn't sliding properly on the pins, because of the made in China quality. If you take a large flat file, to the flat sections of the spindle, that capture the caliper. You can clean it up some, so the caliper doesn't bind up. One of mine was the same way, the mating surface was poorly machined ( wavey ) which filing it will show off.

curvedglass · 01-23-2017, 03:45 PM

I had a similar issue. It broke itself in. Brakes do not pull and last time I rotated the tires it was spinning just fine.

luvbowties · 01-23-2017, 09:43 PM

Quote:

Originally Posted by Grounded63

Was the caliper a tight fit / hard to get on the spindle ? If so, it probably isn't sliding properly on the pins, because of the made in China quality. If you take a large flat file, to the flat sections of the spindle, that capture the caliper. You can clean it up some, so the caliper doesn't bind up. One of mine was the same way, the mating surface was poorly machined ( wavey ) which filing it will show off.

...in agreement here, but could the filing be done on the 'disposable' caliper itself, rather than on the 'permanent' spindle?
Sam

Grounded63 · 01-23-2017, 10:28 PM

I don't see why not. At the time, for me the spindle was the preferred choice.

01-20-2017, 12:27 PM	#1
reed62 Registered User Join Date: Apr 2016 Location: Denver CO Posts: 129	Really tight driver side caliper Hey all, I finished installing the CPP disc brake conversion and the driver side caliper is really snug and does not allow the rotor to spin easily. The passenger side is fine, it spins with a slight amount of drag as to be expected. The driver side requires quite a bit of muscle to rotate it. I have removed the caliper and used a "C" clamp to seat the piston into the bore. I thought it might have some tension that had pushed it out of the bore, but it is as far back as it can go. I know I don't want to drive it for a long period of time because it will probably heat the rotor up substantially. Has anyone else run across this with their conversion?

01-20-2017, 08:34 PM	#2
PGSigns Senior Member Join Date: Jan 2011 Location: Hayes Va Posts: 4,569	Re: Really tight driver side caliper Does the rotor turn fine when the caliper is off? If it does you should be fine. When you cycle the brakes some on the first drive the calipers will find there spot and align to where they need to be. Jimmy __________________ 60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic

01-21-2017, 01:49 AM	#3
Grounded63 Registered User Join Date: Dec 2016 Location: Canon City, Colorado Posts: 126	Re: Really tight driver side caliper Was the caliper a tight fit / hard to get on the spindle ? If so, it probably isn't sliding properly on the pins, because of the made in China quality. If you take a large flat file, to the flat sections of the spindle, that capture the caliper. You can clean it up some, so the caliper doesn't bind up. One of mine was the same way, the mating surface was poorly machined ( wavey ) which filing it will show off.

01-23-2017, 03:45 PM	#4
curvedglass Registered User Join Date: Apr 2014 Location: Pennsylvania Posts: 186	Re: Really tight driver side caliper I had a similar issue. It broke itself in. Brakes do not pull and last time I rotated the tires it was spinning just fine. __________________ --Life looks better through a curved windshield--

01-23-2017, 10:28 PM	#6
Grounded63 Registered User Join Date: Dec 2016 Location: Canon City, Colorado Posts: 126	Re: Really tight driver side caliper I don't see why not. At the time, for me the spindle was the preferred choice.



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