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| | | | Joined: May 2008 Posts: 84 Shop Shark | | Shop Shark Joined: May 2008 Posts: 84 | Looking to see whats the best way to removed the hinge pin on 39-46 chevy pickups.
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | If they are really rusted in, use a torch to remove the rust, otherwise, a punch and sledge with a backup so the hinge doesn't bend or shear the bolts.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | Heat, penetrating oil, gentle strikes with a punch/3 lb hammer, and time; repeat often as needed. The rust bond can be a bugger to break. Don't get too overzealous with the hammer as if you mushroom the pin it will never drive out. | | | | | Joined: Sep 2015 Posts: 2 New Guy | | New Guy Joined: Sep 2015 Posts: 2 | I'm about to try and remove mine . Would it be better to use heat first ?
facebook 4orty 6 Chevy "Shorty" project
| | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | I'm about to try and remove mine . Would it be better to use heat first ? If you are embarking on a restoration and paint condition does not matter, I would first apply heat as it tends to break the rust bond allowing penetrating oil to get into the hinge pin. I have had most success by getting the hinge a dull red/orange color. Be careful to not get too much heat to the sheet metal laminated portion as there is a risk of melting or deforming it if not careful. It may take several cycles of heat/oil/beating to get the pin to start moving. Be patient. When reinstalling, I like to use a liberal amount of antisieze on the pin. | | | | | Joined: Jan 2000 Posts: 2,074 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 2,074 | I love my little air impact hammer, after heat and penetrating oil, I'd use the pointed tip of an inexpensive air impact. Just pushed out some wheel studs like butter. Best of luck | | | | | Joined: Feb 2012 Posts: 506 'Bolter | | 'Bolter Joined: Feb 2012 Posts: 506 | I don't have any experience with a 39-46 pickup so this may be a stupid suggestion. Is it not possible to unbolt the hinge from the door frame and the door and do the pin removal in a vice where you won't scorch the paint?? Is the hinge welded into the door frame and/or the door on older vehicles?
Thanks
Larry
| | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | I don't have any experience with a 39-46 pickup so this may be a stupid suggestion. Is it not possible to unbolt the hinge from the door frame and the door and do the pin removal in a vice where you won't scorch the paint?? Is the hinge welded into the door frame and/or the door on older vehicles? You could, but removing the 70 year old hinge clutch head screws typically requires the same treatment of heat and penetrating oil. | | | | | Joined: Sep 2015 Posts: 2 New Guy | | New Guy Joined: Sep 2015 Posts: 2 | Thanks for the help, mine came out easier than I thought they would . Took me about 5mins per pin . Little heat and they popped right out .
facebook 4orty 6 Chevy "Shorty" project
| | | | | Joined: Nov 2011 Posts: 1,611 'Bolter | | 'Bolter Joined: Nov 2011 Posts: 1,611 | Weird that the humid east coast guy got them out before the Mediterranean climate western guy...that wouldn't have been my guess.
Good luck guys!
Paul
| | | | | Joined: Jun 2009 Posts: 1,596 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 1,596 | I used a butane torch and heated the pin directly (not to red hot, just to get it hot enough). Then a hammer and a punch. Came out fairly easy. | | |
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