CPP 6-5 Lug Disc Conversion

[Suancho]

Neil Mastroianni
'50 3100 Shortbed

Hello all, this is my first post. I recently inherited this truck from a close friend and former teacher. I wanted to use the truck as an "around town/homeowner's truck." So I figured I'd upgrade the brakes to power-front discs.

I ordered the 6-5 lug kit through Chevy Duty and I received boxes from Classic Performance Products. I have found their instructions to be lacking. Here's my sticking point. I am down to the bare spindle and I have mounted the caliper braket (though I just read on their website about the need to install spacers - so now I must go back and fix that). The kit ships with new "bearing adaptors" which slide on the spindle first. They slide on rather easily and have some play. I packed the new inner roller bearings with hi-temp grease and installed the grease seal. I slid the assembly on the spindle and it seated somewhat nicely on the bearing adaptor. I then installed the greased outer bearing, retainer, and then spindle nut. The nut doesn't reach the retainer. Also, the outer roller bearing only slides in so far and now there is play in the rotor. Even with the nut tightened as much as it can be, the hub/rotor/disc can be pulled back and forth on the spindle. What have I done wrong?

Check this link: http://www.classicperform.com/binders1.htm
The pictures above 9 and 14 are where I have a problem

Thanks to whomever had the time/patience to read this. I appreciate your help.

-Neil

 

[mikesters1950]

Neil, I just checked my setup, as it's been a while. First of all, when I installed the inner most adapter, it did not slide on with play. It had to be hammered on with a pipe. That is also how CPP says it should fit. Be sure to check very carefully the spindle. There should not be any worn areas, or obvious ridges, possibly from a spun bearing. On the outer bearing retainer, I suspect that the washer is too big and hits the rotor, before it tightens the bearing. The instructions show a large washer going under the adjusting nut. On my truck, I have a washer that is approx 1/4 inch thick, and just about the same size as the center of the outer bearing, and the adjusting nut. This allows it to tighten down the bearings without touching the rotor. I also ended up using the original grease caps, but can't remeber why. I think it was because the others hit the nut and scraped while it turned. I hope this makes sense. If not, feel free to write back, or send private email. If all else fails, I can possibly send pictures of mine. Good luck....Mike

 

[Suancho]

Neil Mastroianni
'50 3100 Shortbed

Mike,
Thanks for your input. Due to the fact that the bearing adaptor slides on with little effort and therefore spins on the spindle, I assume the spindles are worn. I have ordered two spindles from Heavy Chevy ( http://www.heavychevy.com ).

It's possible the spindles are worn or maybe not even the correct spindles. I don't know.

When I disassembled the drums, the inner race for the original ball bearings slid off by hand also. I hope that with the "new" spindles, the problem will be solved. Good thing I already have the king pin set from Chevy Duty.

-Neil