Pin removal in control arm

[JRinElginTX]

I'm trying to remove the hardened dowel pin from the control arm in my 8N. This is the pin that wears out over time and needs replacing as about half of it is worn down. I've tried driving it out and pressing it out with a vise to no avail. I tried to remove the control arm out of the cover to take it to a shop and have a heavy duty press do the job, but can't figure out how it comes apart. Removed the 4 quadrant bolts, but it still won't come apart. Is there a bolt I'm missing, or do I need to try and pry it apart? In reviewing my F0-4 manual I don't see anything other bolts holding it in place. I'm thinking about trying to drill out the pin. Any help is greatly appreciated!

 

[JMOR]

(quoted from post at 13:10:20 06/01/14) I'm trying to remove the hardened dowel pin from the control arm in my 8N. This is the pin that wears out over time and needs replacing as about half of it is worn down. I've tried driving it out and pressing it out with a vise to no avail. I tried to remove the control arm out of the cover to take it to a shop and have a heavy duty press do the job, but can't figure out how it comes apart. Removed the 4 quadrant bolts, but it still won't come apart. Is there a bolt I'm missing, or do I need to try and pry it apart? In reviewing my F0-4 manual I don't see anything other bolts holding it in place. I'm thinking about trying to drill out the pin. Any help is greatly appreciated!

nut on the shaft...inside...opposite end of shaft from quadrant.

 

[JRinElginTX]

JMOR,

Here's what it looks like now. I've removed the 4 quadrant bolts and hit the friction plate with some PB blaster. Am I missing that nut that you referenced earlier? Thanks again!

 

[Kurt-NEPA]

I think you need to get that aluminum touch control arm hub off. Its a real bear. If you put a puller on it, the aluminum gives way. When I did mine, I destroyed the aluminum hub. The good news is that aftermarket hubs are available. Maybe someone has a better idea.

 

[carlntexas]

I soaked the aluminum hub with PB blaster for 2days than put the nut back on and hit it with a hammer it came right off. That shaft has to come out on inside of cover to get the control arm off. I used a vice, socket and a short bolt to get the cam follower pin out.

 

[JMOR]

(quoted from post at 17:23:00 06/01/14) JMOR,

Here's what it looks like now. I've removed the 4 quadrant bolts and hit the friction plate with some PB blaster. Am I missing that nut that you referenced earlier? Thanks again!

o, you are not missing it, as you have it and other parts removed already. Now you have to remove the touch control lever & 4 bolt quadrant & then the shaft will slide into the lift cover & once out the arm can be removed from shaft.

 

[souNdguy]

i'm guessing he got ahead of himself and did not remove the aluminum hub fromthe keyed shaft before taking the rest of it apart..

 

[JMOR]

Knowing how it fits together helps, too.

 

[JRinElginTX]

Thanks again ya'll! I've been soaking the aluminum hub these last couple of days and will continue to work on prying it out. Using a couple of flat head screwdrivers as the friction (pad?) behind it has greatly deteriorated over time. Can't do much mowing without good hydraulics.

 

[ZANE]

Penetrating oil is not much help in getting that aluminum hub off.

You need something like a small propane torch or Oxy Acetylene torch to heat the OD of the hub in order to make it swell in the ID. The aluminum will heat lots faster than the shaft. Gently pry on both sides of the disc when it gets hot andd it should come right off. Done a lot of them. Broke a lot of them before I learned to heat them. If the aluminum begins to have little bubble on the skin stop heating immediately as it is about to beome molten and if too much heat is applied you will end up with a puddle of aluminum.

Zane

 

[ZANE]

Don't even try to drill that pin out. You will ruin the link and a new one won't go unleas you weld it in and that ain't right!

Zane

 

[JRinElginTX]

Finally got off the aluminum piece, however since it's keyed the shaft doesn't want to slip past the quadrant. I don't see any keyed area in the quadrant. There is a hole in the shaft, am I to slip something in there to unscrew the shaft into two pieces? Sorry to keep bugging everyone on this one, but can't seem to figure the puzzle out.

 

[JRinElginTX]

Finally got it off!! Didn't know that was a woodruff key! Got the arm out and now I can take it to a machine shop and have the pin pressed out. I appreciate everyone's help on this one. Many good lessons learned while working on this ole girl. Many thanks again to a great group of folks who have helped me out since October.

 

[JRinElginTX]

Thanks Zane! I'm opting for using a hydraulic press to do the job. Got a New Holland dealership nearby that would take it on.