 Changing Wheel Bearings Using a MIG Welder |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| PRS914-6 |
 Feb 11 2007, 06:51 PM
Post
#1
|
|
Excellence Magazine Project 914 3.6  Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None   |
I have posted this before but finally took some pictures of the process. I never beat out races out my hubs because it always damages the "seat" where the races press against and it can cock the race as a result.
If you run a bead around the race and let it cool, it will shrink and you can push the race out by hand and never touch it with a tool. If it won't come, run another bead. The picture with the pencil shows the lip that gets damaged when you beat them out with a drift and hammer. To reinstall, I heat the hub with an oven or sometimes my torch with a large rose bud. I have the press set up with all the tools ready so they can be quickly installed.   |
   |
 
|
| Twystd1 |
Feb 11 2007, 11:15 PM
Post
#2
|
|
You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
That is also the easiest way to remove valve seats that I know of.
Cept I use a TIG. C |
|
|
|
| Andyrew |
Feb 12 2007, 12:13 AM
Post
#3
|
|
Spooling.... Please wait Group: Members Posts: 13,376 Joined: 20-January 03 From: Riverbank, Ca Member No.: 172 Region Association: Northern California 
|
Nice mig bead! Just perfect enough penitration so as it is just topical enough to shrink the bearing when it cools!!
Nice.. |
|
|
|
| Mueller |
Feb 12 2007, 10:53 AM
Post
#4
|
|
914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
|
or you heat the entire hub in an oven, the alum will expand much faster...
neat idea with the welder, never thought of it !!!! |
|
|
|
| andys |
Feb 12 2007, 12:13 PM
Post
#5
|
|
Advanced Member Group: Members Posts: 2,165 Joined: 21-May 03 From: Valencia, CA Member No.: 721 Region Association: None
|
Paul,
Any potential issues with changing the condition or even going past the critical temperature of the aluminum? That seems like an awful lot of heat to transfer into the hub area immediately aroung the race. Just a thought. Andys |
|
|
|
| morph |
Feb 12 2007, 09:59 PM
Post
#6
|
|
quality parts builder Group: Members Posts: 1,828 Joined: 25-November 03 From: oregon coast Member No.: 1,389 Region Association: Pacific Northwest |
(IMG:style_emoticons/default/idea.gif) this is why i love this board i learn things i NEVER have thought of
james |
|
|
|
| PRS914-6 |
Feb 12 2007, 11:30 PM
Post
#7
|
|
Excellence Magazine Project 914 3.6 Group: Retired Members Posts: 1,278 Joined: 20-May 06 From: Central California Member No.: 6,031 Region Association: None |
QUOTE(andys @ Feb 12 2007, 10:13 AM)  Paul, Any potential issues with changing the condition or even going past the critical temperature of the aluminum? That seems like an awful lot of heat to transfer into the hub area immediately aroung the race. Just a thought. Andys Been doing it for 30 years with no ill effects. The aluminum next to it is cold and has a lot of mass and absorbs the heat very quickly. No discoloration under the race so I feel it's pretty safe. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 16th May 2024 - 11:36 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.