Joining broken steel shaft

Z

Zip

Aluminum

Joined

May 25, 2007

Location

Champlain, NY

• Apr 7, 2021

• #1

Have an old Magline Trailevator trailer that came with a manual hydraulic pump. The "slider rod" inside broke. I can't locate any parts for the pump and can't even identify it.

Looking for suggestions to join the two halves...brazing or tig welding. I have a mini mill so I can mill out the ball end socket opening. I would think the most force is applied away from the center area opening, both ends use a leather gasket. The shaft looks dark because it was put in an ultrasonic cleaner with rust remover solution.

Obviously I'm not at your skill level but would like to attempt the repair...if it doesn't work I'll just try to locate another hand pump I can mount on the tank.

Thanks for any suggestions

 

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eKretz

Diamond; Mod Squad

Joined

Mar 27, 2005

Location

Northwest Indiana, USA

• Apr 7, 2021

• #2

That is called a spool. You probably can't repair it economically. Better to find a part for sale or make a whole new spool. I wouldn't be screwing around with trying to braze or TIG items under direct hydraulic pressure. Hydraulic fluid under pressure is extremely bad juju if it gets loose through a small aperture and makes contact with skin (and gets through). Like get your ass to the E.R. immediately level bad juju.

Making a new one should be pretty straightforward.

 

J

john.k

Diamond

Joined

Dec 21, 2012

Location

Brisbane Qld Australia

• Apr 7, 2021

• #3

Broken part appears to be part of the manual pump linkage......a simple pivot for the back and forth action .......I d have a go at silver soldering the two bits back together......or make a new bit......IMHO ,the spherical surface doesnt need any particular accuracy,just to fit and move.......if that didnt work ,then id say you could make a workable replacement quite easily,again ,the spherical surface not needing any precision beyond fitting.

 

B

boslab

Titanium

Joined

Jan 6, 2007

Location

wales.uk

• Apr 7, 2021

• #4

Does not look to be a hard job to make a new one, I’d be tempted myself, bit of ground shafting, couple of grooves and a divot for the end of the pump handle.
You can lap the rod if your keen
Mark

 

P

partsproduction

Titanium

Joined

Aug 22, 2011

Location

Oregon coast

• Apr 7, 2021

• #5

Said "Spherical surface" has a big sign on it that says "Break right here!" If you make a new one try to make the center hole depth smaller, the minimum depth it needs to be to function. I'd be surprised if it wasn't hardened, but you may be able to find an induction hardened chrome plated shaft to make a new one out of if so. Then the problem is cutting through the hardened skin, low RPM and carbide should work. You may have to settle for a medium carbon product like 1045 induction hardened and chrome plated, the center should still be softer and perhaps less fragile than the original.
Be sure to ask how it happened, as sometimes people bang away at delicate mechanisms without knowing their own strength, then you could take it on without any warrantee and say as much on the invoice.

 

J

john.k

Diamond

Joined

Dec 21, 2012

Location

Brisbane Qld Australia

• Apr 7, 2021

• #6

True,the shaft would be much better with just a slot,and the pump handle modified likewise.......as the until is to tip up a trailer,I dont thing hardened would be needed,as wear is going to be minimal..........incidentally ,ive seen those pump units in several applications,including cab tilt on a truck.

 

D

DDoug

Diamond

Joined

Oct 18, 2005

Location

NW Pa

• Apr 8, 2021

• #7

That looks like a pump for tipping up cabover truck cabs.

Check a truck scrap yard.

Your looks like, not only the handle has been worn out.

 

ponderingjunkman

Cast Iron

Joined

Dec 9, 2003

Location

Cairo, NY USA

• Apr 8, 2021

• #8

I've seen old jeeps with that sort of pump to raise a snowplow. Perhaps sniff around old jeep places for parts, or a whole different unit?

 

J

john.k

Diamond

Joined

Dec 21, 2012

Location

Brisbane Qld Australia

• Apr 8, 2021

• #9

Yes,its definitely a standard pump unit...trouble is with high scrap prices ,not much old stuff is hanging around.

 

B

BT Fabrication

Titanium

Joined

Nov 3, 2019

Location

Ontario Canada

• Apr 8, 2021

• #10

I would just turn a new one, much easier and stronger and faster to fix.

 

J

J Henricksen

Stainless

Joined

Sep 19, 2003

Location

Roscoe, Illinois

• Apr 8, 2021

• #11

Thats an old enerpak unit. We have one on a lift table for a granite saw. Might check a local enerpak repair place for availability or find a replacement pump.

 

M

mmarquette

Cast Iron

Joined

Dec 20, 2016

• Apr 8, 2021

• #12

As tempting as it would be to try and fix it’s not worth it. New pump and tank from Surplus Center is less than 300$. If I did it would be a slot a John k stated.

 

Z

Zip

Aluminum

Joined

May 25, 2007

Location

Champlain, NY

• Apr 8, 2021

• #13

I just TIG'd it together today...appears strong and straight...trailer goes up and down like it was designed to. My buddy just dropped off a military single acting pump....only has a one quart tank...but I can modify it if required. Thanks all.