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how to weld up a lincoln locker
Posted 01 July 2004 - 05:25 PM
I'd suggest using a mig welder so that you have less splatter and no slag to try to clean out.
What you'll need:
mig welder with a fairly strong wire.
Open rear differential
1st, remove and open the diff. drain all the oil out and spray down the whole inside with brake cleaner to remove as much oil residue as possible. let the cleaner evaporate.
set up you oxy/accetelyne torch with a good flame. you'll be using this to preheat the gears.
place torch inside onto the spider gears and center shaft. try to put as little heat on the ring and pinion gears (if you are not removing the open carrier and R&P's.) heat the gears up till you believe it is sufficent. (don't melt them...)
take your mig gun and put a good tack weld on all 4 corners where the gears meet. on side 1. then repeat on side 2.
put full welds on the 8 total areas (side 1 and 2). where the gears mesh. then what i've had done to all the lincoln lockers i have had made. is to weld the center shaft to the gears. that way the gears will not break and seperate. they are one big piece in the center.
BETWEEN EACH SIDE AND BETWEEN WELDING THE CENTER IT'S ALWAYS A GOOD IDEA TO MAKE SURE THE GEARS ARE STAYING PREHEATED. SO THROWING IN THE TORCH HERE AND THERE WHEN THERE'S PAUSES IN YOU WELDING IS NOT A BAD IDEA. JUST DON'T OVER DO!!
keep the cover off and let it air cool. don't put anything on it to make it cool quicker. cause you'll make it brittle and easier to break. let it set over night (if possible, but do not fill when warm or hot with oil) then fill with oil. and you are ready to use it.
it's suggested to remove one axle while driving on the street. do to the extra strain on the axles and the rest of the rear drivetrain. this is an excellent modification for OFFROAD rigs. it will help gain a lot more traction than a limited slip ever will.
HOW TO REMOVE THE AXLE:
To remove the axle on a EA81 car. remove lower shock bolt. lift up the rear of the car till the tire is off. punch roll pin out. and wiggle the axle around till you get it off. usually one side or the other will come off easiest. as soon as you find which side. stick with that side to remove. it's also a good idea to put a light lubricant on each time to make sure it removes easier.
it's the same idea and the same way as any other rig to weld up the open differential.
i drew up some pictures but it won't let me upload anything as an attachment. i'll try to find a way to upload them. if you need them please contact me.
Posted 01 July 2004 - 08:36 PM
Posted 18 July 2005 - 10:20 AM
Posted 18 July 2005 - 10:52 AM
Posted 19 July 2005 - 11:15 PM
I've heard to weld the gears together, and then weld the gears to the case for added strength... I've never heard of preheading the gears though..
Problem with MIG welds is they are very hard welds, and so can be brittle in comparison to a relatively flexible TIG or gas weld..
And it's only a Lincoln Locker if you use a LINCOLN welder
Posted 20 July 2005 - 07:33 PM
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