Cadillac & LaSalle Club Discussion Forum

Cadillac & LaSalle Club Forums => Want To Buy - Cars => Topic started by: Loveofclassics78 on August 24, 2017, 08:27:21 AM

Title: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on August 24, 2017, 08:27:21 AM
Good morning!  Does anyone have a custom made puller/installer or perhaps a used factory puller/installer to remove the crankshaft hub off a 500? I am looking to buy!  Thanks!
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on August 24, 2017, 08:40:22 AM
A normal puller will do the task, but make sure you don't damage the 9/16" UNF threaded hole in the centre of the crankshaft.

As for an Installer, I made my own using a long 9/16" UNF threaded rod, and with a nut wound up the thread, and a heavy duty washer between the nut and the hub, wound the hub back on.

Then I inserted a shorter 9/16" UNF bolt with a heavy duty washer into the crankshaft end to retain the hub tight, and to act as a means of manually turning the crankshaft in the future.

Bruce. >:D

PS.   There is a piece of cork inserted in the thread by the factory when new, to protect the thread from rusting.
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on August 24, 2017, 09:13:14 AM
Thanks Bruce.  I was worried about using a normal remover.  I do have the bolt on order for installation.
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Jeff Rosansky CLC #28373 on August 24, 2017, 01:09:49 PM
Yep, Bruce has it.
I just left my bolt in there to turn the crankshaft in the future. I put a little antisieze on it.
I think Scot Minesinger has a detailed post on how he did his with a threaded rod.
When done paint the rod the correct shade of blue before you put it on the shelf as you have just made a genuine Cadillac accessory tool.
Jeff
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Jeffrey Burland on September 01, 2017, 09:07:27 AM
http://forums.cadillaclasalleclub.org/index.php?topic=144896.msg360225#msg360225


http://forums.cadillaclasalleclub.org/index.php?topic=145847.msg366171#msg366171

http://forums.cadillaclasalleclub.org/index.php?topic=143224.msg349459#msg349459

Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 23, 2017, 04:11:51 PM
Thanks for the answers. I bought this threaded rod with the 9/16 UNF thread, but the rod was too big.  Did I buy the right one?

Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on September 23, 2017, 07:17:38 PM
From reading the label, you have the correct thread and pitch, so there is no reason, apart for the length as to why it won't thread in the hole.

You have removed the cork plug from the crankshaft?

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 24, 2017, 01:43:08 AM
Yes. Cork removed. There must be a specific diameter?
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on September 24, 2017, 03:36:29 AM
All the ones I have here are 9/16" UNF.

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Glen on September 24, 2017, 04:00:00 AM
According to my chart 9/16 18 is fine thread.  12 tpi would be course thread. 
Maybe someone use the wrong tool and damaged the threads. 
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 24, 2017, 06:51:03 AM
Well, it's not the threads that are presenting an issue, it's just that the rod is too large to fit into the hole where the threads are. Like I may need to try a 1/2 fine thread. Is it possible that some crank threads could be different?  That and keeping the crank from turning while removing the hub has become a PITA!
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on September 24, 2017, 08:00:21 AM
I doubt it very much, as all the cranks would be machined to the same tolerances and measurements as every other 500 or 472 crank.

If there were differences, the factory would have two different pullers/installers for the same task.

There is the possibility that someone in the past used a puller to remove the flange without protecting the thread, and thereby distorting the end of the thread, thus stopping you from installing the correct thread.

Sounds like you need to obtain, or borrow, a 9/16" UNF tap and run it down the thread to clean it out.

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 25, 2017, 11:18:37 AM
Understood. I purchased a thread chaser/restored set (Lang 2581).  Going to run the 9/16-18 through the snout and clean up the threads. Hopefully, this will help. I will update soon!
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 27, 2017, 10:15:52 AM
Update:

The thread chaser is a no go, because there aren't any front threads to grab onto.  I'm going to try a 9/16-18 taper tap and see if I can get just a few threads on the shaft just to start the chaser.  Then do the rest with the chaser because I don't want to create new threads.  I hope this works.   If this doesn't work, looks like I may have to rethread the crank shaft, which is not bad to do, but I really don't want to.  Thanks everyone!
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 27, 2017, 06:42:58 PM
Fixed!  :D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on September 27, 2017, 07:48:05 PM
Great!

What was the actual problem?   A butchered thread?

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on September 29, 2017, 07:19:00 AM
Yes.  You guys called it.  The first few threads were gone due to a improper puller.  I used a 9/16 taper tap to start a few threads, then finished the rest with a chaser.  New bolt and rod are going in great.  My job continues on.
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on September 29, 2017, 08:39:21 AM
Great news.

I hate it when someone uses the wrong tools and destroys something in the process.

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: "Cadillac Kid" Greg Surfas 15364 on September 29, 2017, 12:37:10 PM
I for one am glad I bit the bullet years ago and bought the Kent Moore J21052 tool (it is still available albeit some $560.00).  It makes pulling the hub or installing it a 2 or three minute job with no busted knuckles and not having to hold the motor from rotating.  For anyone anticipating doing this task more than 3 or 4 times in the future it would (IMHO) be money well spent. 
Greg Surfas
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on October 18, 2017, 12:29:10 PM
I did see that tool. It is pricey for a one time job!

Question: When taking the hub off with the puller, how did you guys keep the
Crank from turning? I have a bolt inside the crank to protect the threads.
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on October 18, 2017, 05:44:22 PM
In your case, I would be holding one of the puller legs with a large shifter (Adjustable spanner) to stop it turning.

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Glen on October 19, 2017, 02:39:01 AM
You may already know this but one of the holes in the flange is not directly across from the other one.  If you use the two bolt puller and use that hole it will not pull straight and it will not come off properly.  Be sure you are using the right holes.  The force screw should be precisely centered on the crankshaft.  In the picture it looks a bit like the screw is not centered.   
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on October 19, 2017, 05:52:02 AM
Ok, to ensure that I'm using the right holes on the flange, I'll reset everything and set it up again. Better safe

Good idea with the wrench. Guess I can get it wedged in there. I also read that if you stick a screwdriver through the flywheel, it will keep the crank from turning. Sounds primitive though. I'm always afraid of damaging something.
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: The Tassie Devil(le) on October 19, 2017, 07:01:33 AM
The screw driver works as well.

Bruce. >:D
Title: Re: Crankshaft Hub Puller for Cadillac 500
Post by: Loveofclassics78 on October 19, 2017, 06:50:53 PM
Hub off! Man, you guys are saving lives around here!