Calipers will not fit on drop spindles... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

silvereagle07 · 05-13-2010, 08:07 PM

I'm finally getting around to putting on my DJM drop spindles and Performance online 1.25 rotor kit. No matter what I do I cannot get the rotors to turn after I install the calipers. I called Performance Online and they use the stock heavy half ton calipers and rotors. Anyone ever had a problem with DJM spindles not being machined correctly?

S10Fan · 05-13-2010, 08:36 PM

Where are the rotors coming into contact with the calipers? Or is it "pad" pressure against the rotor?

joe231 · 05-13-2010, 10:42 PM

Yeah, what s10fan asked....
Also do you have the correct calipers for the 1.25" rotors?

C10_86 · 05-13-2010, 10:49 PM

If your pads are tight on the rotor, you need to compress the caliper before installing it on the new spindle just like you do when you put new pads in.

thrtsxchambers · 05-13-2010, 10:52 PM

Quote:

Originally Posted by C10_86

If your pads are tight on the rotor, you need to compress the caliper before installing it on the new spindle just like you do when you put new pads in.

x2

harnalien · 05-13-2010, 10:52 PM

I had this problem but it resolved itself after some driving. There is going to be some contact between the pad and rotor regardless. However getting the calipers to recess will help a lot.

silvereagle07 · 05-14-2010, 07:42 AM

The rotors do not come in contact with the caliper, it's the outside pad pressure. The caliper(d52) is fully compressed and the inside pad is not touching the rotors. The outside pad is keeping the the rotor from turning without a tremendous amount of force. It looks to me like the spindle shaft (where the inside bearing rides) is not machined enough and causing the caliper to be off center. I have been to autozone to compare all the 1.25 calipers, pads and bearings are the same measurements as mine. I think I'm going to removed the bosses where the caliper slide pins mount to move the caliper closer to the outside of the spindle.

05-13-2010, 08:07 PM	#1
silvereagle07 Registered User Join Date: Sep 2008 Location: Bailey, NC Posts: 2,462	Calipers will not fit on drop spindles... I'm finally getting around to putting on my DJM drop spindles and Performance online 1.25 rotor kit. No matter what I do I cannot get the rotors to turn after I install the calipers. I called Performance Online and they use the stock heavy half ton calipers and rotors. Anyone ever had a problem with DJM spindles not being machined correctly? __________________ Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT

05-13-2010, 08:36 PM	#2
S10Fan Old Heap Driver Join Date: Mar 2008 Location: Newport News, Va Posts: 2,642	Re: Calipers will not fit on drop spindles... Where are the rotors coming into contact with the calipers? Or is it "pad" pressure against the rotor? __________________ _____________________________ Bryan '99 Silverado 1500, 4.3, 5-speed, reg cab, short bed '50 Chevy 2DR Hard Top, 350/350, M2 Front End, 3:08 gear, cruiser. '40 F**d Sedan, all Chevy power, Heidt's front end, TCI rear, nice driver.

05-13-2010, 10:42 PM	#3
joe231 Registered User Join Date: Dec 2007 Location: Palmer, Alaska Posts: 13,821	Re: Calipers will not fit on drop spindles... Yeah, what s10fan asked.... Also do you have the correct calipers for the 1.25" rotors? __________________ *CHEVY ONLY* Last edited by joe231; 05-13-2010 at 10:43 PM.

05-13-2010, 10:49 PM	#4
C10_86 Registered User Join Date: Feb 2010 Location: Morgan, MN Posts: 19	Re: Calipers will not fit on drop spindles... If your pads are tight on the rotor, you need to compress the caliper before installing it on the new spindle just like you do when you put new pads in.

05-13-2010, 10:52 PM	#6
harnalien TruckincrazY Join Date: May 2004 Location: Haslet, TX Posts: 493	Re: Calipers will not fit on drop spindles... I had this problem but it resolved itself after some driving. There is going to be some contact between the pad and rotor regardless. However getting the calipers to recess will help a lot.

05-14-2010, 07:42 AM	#7
silvereagle07 Registered User Join Date: Sep 2008 Location: Bailey, NC Posts: 2,462	Re: Calipers will not fit on drop spindles... The rotors do not come in contact with the caliper, it's the outside pad pressure. The caliper(d52) is fully compressed and the inside pad is not touching the rotors. The outside pad is keeping the the rotor from turning without a tremendous amount of force. It looks to me like the spindle shaft (where the inside bearing rides) is not machined enough and causing the caliper to be off center. I have been to autozone to compare all the 1.25 calipers, pads and bearings are the same measurements as mine. I think I'm going to removed the bosses where the caliper slide pins mount to move the caliper closer to the outside of the spindle. __________________ Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT



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