Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 11-02-2020, 08:31 PM   #1
bucket-o-rust
Senior Member
 
Join Date: Aug 2012
Location: visalia calif
Posts: 256
Default Spring perch removal ?

What is the best procedure you have used to remove a stuck spring perch ?
bucket-o-rust is offline   Reply With Quote
Old 11-02-2020, 08:40 PM   #2
Chris Haynes
Senior Member
 
Chris Haynes's Avatar
 
Join Date: May 2010
Location: Camarillo, CA and Pine Grove, CA
Posts: 2,830
Default Re: Spring perch removal ?

An overnight soak of Kroil and a press.
__________________
1921 Runabout
1930 Tudor
Early 1930 AA
Speed costs money. How fast do you want to go?
Chris Haynes is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 11-02-2020, 08:49 PM   #3
DBrer
Senior Member
 
Join Date: Oct 2019
Location: Washington
Posts: 175
Default Re: Spring perch removal ?

You could use a pencil and paper and draw it out...............
DBrer is offline   Reply With Quote
Old 11-02-2020, 08:53 PM   #4
Doug Linden
Senior Member
 
Doug Linden's Avatar
 
Join Date: May 2010
Location: Massachusetts
Posts: 257
Default Re: Spring perch removal ?

Heavy duty 1" air hammer.
Doug Linden is offline   Reply With Quote
Old 11-02-2020, 09:42 PM   #5
Davew
Senior Member
 
Davew's Avatar
 
Join Date: Sep 2017
Location: Minnesota
Posts: 113
Default Re: Spring perch removal ?

I just did this. Really stuck. Kroil, Heat, big hammer. Took three days but finally out. Perches are not reusable
Davew is offline   Reply With Quote
Old 11-02-2020, 10:34 PM   #6
Kevin in NJ
Senior Member
 
Join Date: May 2010
Location: South East NJ
Posts: 3,398
Default Re: Spring perch removal ?

Sponsored Links (Register now to hide all advertisements)
Never heat the axle past the point where oil start smoking you will ruin the axle's metal. This will make it very soft.

I had a pair of perches that would not move.

Keep in mind I have this big vice and tried all the common things. Though kroil I never bother with as it never actually soaks through if they are really stuck. That is another story.

Not long before this I picked up a pile of tools insanely cheap at a garage sale. In this pile was a long throw automotive air hammer. So I thought, lets give it s try.

I cut the end off a chisel tool and put the nut on the end of the perch. Pulled the trigger and much to my surprise after a short bit it moved, slowly. Got it down and pulled the nut off, keep in mind it was still very very tight. Pushed it through. The end was mushroomed a bit, but the original nut still fit on it. The other side worked the same way.

A KEY part of this, I have a vice that is around 100lbs. Two people had to lift it on the bench. This did not allow the axle to move even a small amount. If you can not solidly back the axle while hammering it will not work very well.

Good luck.
Kevin in NJ is offline   Reply With Quote
Old 11-03-2020, 11:38 AM   #7
katy
Senior Member
 
katy's Avatar
 
Join Date: Jun 2015
Location: Red Deer, Alberta
Posts: 5,011
Default Re: Spring perch removal ?

Quote:
Originally Posted by DBrer View Post
You could use a pencil and paper and draw it out...............
Good one!
__________________
If you don't hear a rumor by 10 AM, start one!.
Got my education out behind the barn!
katy is offline   Reply With Quote
Old 11-03-2020, 06:38 PM   #8
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 16,369
Default Re: Spring perch removal ?

Folks have been dropping model A axles for over a half century. Many of those dropped axles are still in service. You cant hurt the axle by heating it unless it gets so hot it bends from it's own weight. Cherry red to a dull orange is about as hot as you can go. Bright orange or yellow is way too hot.

You can heat the perch hot enough to see some red starting to show but you don't want to hit something that hot. Heating and letting it cool will break some corrosion bonds and it can even be allowed to cool off before pressing on it. A person can try heating it to 250* F and start pressing but it can be a lot hotter than that and still keep it's bond grain intact. Start out at a decent temp and the results will be better. I've welded a piece of steel strap over an old perch nut so that it can be threaded down on the perch till it bottoms against the welded strap. A person can hit that with a hammer or press on it if they are careful. Backing up the axle is important but a person doesn't want the back up tooling to mar the axle.
rotorwrench is offline   Reply With Quote
Old 11-05-2020, 05:29 PM   #9
john in illinois
Senior Member
 
john in illinois's Avatar
 
Join Date: May 2010
Location: Illinois
Posts: 2,181
Default Re: Spring perch removal ?

i use a muffler air hammer with a flat punch end. I screw the nut on perch Enough to keep the punch centered.
Heat the axle and use the air hammer. Often the perch comes out ok.

By the way the Model A roadster in my Avatar has a heat bent dropped axle.


John
__________________
Welcome each day
john in illinois is offline   Reply With Quote
Old 11-10-2020, 06:28 PM   #10
Andy
Senior Member
 
Join Date: May 2010
Location: Kerrville, Tx
Posts: 2,768
Default Re: Spring perch removal ?

I pull them out with a tool that fits over the axle. Works easy. No hammering!
Andy is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 01:56 PM.