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Thread: 63-82 Rear Trailing Arm Rebuilding Reply to Thread
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Topic Review (Newest First)
10-22-2019 05:57 AM
gtr1999 Thank you Dave.
In regard to the new rotors, I used about 6-8 and 1/2 I had to rebore. I just finished up a set of 31's last weekend and the new NAPA rotors fit but I still face the star wheels shorter so that makes a big difference. I can't say if the new rotors would have still fit with the length they come in out of the box.
10-21-2019 10:03 PM
lakeside49 GTR1999, Wow. Thank you for being a true skilled and detailed professional in our midst.
Meant most sincerely.
Dave V.
07-02-2019 06:18 AM
gtr1999 Just to update the issue I had with that last rotor, I had to rebore 3 of 6 new rotors, they came from various suppliers. Some were drilled and slotted, others had the rivet holes so they came from a vendor, all had to be rebored.

I just bought 2 new NAPA premiums rotors but didn't open them yet.

If you replace rotors and find they are tight, don't fit, or you hear a ticking sound don't rule out new rotors. We should not have to machine new parts but the QC today on imported parts is a crap shoot.
03-11-2019 04:58 AM
worship79 Compliments!
03-07-2019 01:36 PM
Maniacmechanic1
Quote:
Originally Posted by gtr1999 View Post
Thanks Brian
The biggest hassle was looking for a piece of 1" steel in my shop!
Your A Very Good and Handy Machinist Gary !
03-07-2019 12:02 PM
gtr1999 Thanks Brian
The biggest hassle was looking for a piece of 1" steel in my shop!
03-06-2019 10:55 AM
Maniacmechanic1 Precision boring is not easy.
Nice Work Garry !
03-06-2019 06:35 AM
gtr1999 I have been running this thread now for 12 years and hopefully it has helped some of you out.

Some new developments regarding parts.
The seals that come in some kits are actually better then the junk that was shipped in the past so that is good news.

I found the new NAPA rotor I typically use didn't have the bore for the parking brakes completely finished. The diameter was close enough to allow the rotor to slide over the shoes but they hit. To date not one SS parking brake kit that I have used as been able to be used out of the bag. The all need to be fit and part of what I do is shorten the star wheels to allow the shoes to collapse more to avoid hitting the rotor hat. This new NAPA rotor wouldn't work. So since I already matched it to the axle I wanted to keep it so I machined the bore and fit the rotor. I can see if you didn't know about this it would drive you nuts or you would just burn up your new shoes.

First I had to machine up an extension for my boring head, then dial in the rotor in the mill and bore it. If my lathe was larger I could have bored it faster in the lathe.












Here it is done


05-07-2018 08:04 PM
gtr1999 Your pictures don't show up on my PC?

To answer your questions
1- Yes I use Timkens. While all quality made bearings should follow ISO manufacturing procedures Timkens are what I have used for many years and recommend.

2- Yes still using Timken automotive bearing grease which I think is the same as Lucas Red & Tacky but that is just my opinion.

3- CR- is Chicago Rawhide now owned by SKF. I like these seals. NAPA sold them under their name but I don't buy them from NAPA so I can't say if they still stock them? I have seen some cheap seals sold so I would spend more for these.
05-07-2018 07:40 PM
kingkohlmn Attachment 22633
Actually this is the one with the chattering.
05-07-2018 07:36 PM
kingkohlmn Attachment 22625
Not sure if you can see, but it looks like on the outer edge, there is chattering.
Thanks for the great write and advice.

Bill
05-07-2018 07:32 PM
kingkohlmn Attachment 22617
This is the bearing carrier, no idea if this should be trashed.
05-07-2018 07:30 PM
kingkohlmn Attachment 22609
You can see grooves from where the bearing was removed. I hope that was not caused by me.
05-07-2018 07:26 PM
kingkohlmn Attachment 22601
Same spindle, in bearing surface.
05-07-2018 07:24 PM
kingkohlmn Hi Gary,
I've read through the entire post and I have some questions before I get started. I also have some pictures which I am not experienced enough to know if the part should be replaced. It looks like I can only attach one picture. I'll try attaching the others in separate posts.
Questions:
  1. Are you still using the Timken bearings? I have access to a bearing supply company through my company, therefore I can whatever bearing you recommend.
  2. Are you still using the Timken grease as in a later post?
  3. In one the posts you said you use "CR" seals, I was not able to find CR. I assume they were bought out by another company or went out of business. What are you using now?
Attachment 22577
I believe this is the original spindle. I measured the area and it is within spec from one of you posts. Should this be trashed?
Attachment 22585
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