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Oxygen/thermal Lance for kingpin removal
- Thread starter Coytee
- Start date
jcb jobe
New Member
No ending to the story...what a cliff hanger
Coytee
Well-Known Member
Gack, you're right.
I actually posted the results somewhere else, having totally forgotten about this thread!
Pin is out/fixed. Was a BEAR of a job to do. Had to fabricate a cradle to hold a 30 ton jack. Took a lot of persistence. When the pin finally broke loose (meaning it went from frozen to moving about 1/2 of an inch) there was so much pressure the entire machine shook. It was bending the steel on the cradle. I had an idea, rather than to hit the PIN, I hit the axle and with that pent up pressure in there, everything cut loose and it broke free. We then had to "inch" it out bit by bit with little extensions to keep moving. Honed the hole and the new one went right in. It WAS a major fight though, especially for (at best) a 'quasi-backyard mechanic' and his friend.
Pictures below.
I actually posted the results somewhere else, having totally forgotten about this thread!
Pin is out/fixed. Was a BEAR of a job to do. Had to fabricate a cradle to hold a 30 ton jack. Took a lot of persistence. When the pin finally broke loose (meaning it went from frozen to moving about 1/2 of an inch) there was so much pressure the entire machine shook. It was bending the steel on the cradle. I had an idea, rather than to hit the PIN, I hit the axle and with that pent up pressure in there, everything cut loose and it broke free. We then had to "inch" it out bit by bit with little extensions to keep moving. Honed the hole and the new one went right in. It WAS a major fight though, especially for (at best) a 'quasi-backyard mechanic' and his friend.
Pictures below.
Coytee
Well-Known Member
I might add (in case I never mentioned it) I originally tried to put the jack under the pin....with the 'full weight' (ha) of the machine holding it down.
That was a major fail because:
1. I didn't have the FULL weight of the machine holding the pin to the jack
2. Even if I DID have the "full" weight of the machine, we're looking at a 30 ton jack and a seven'ish ton (I think) machine
3. Jack simply lifted front of machine up to the extent it could reach. So we had to figure out a way to immobileize the jack, relative to the machine.
4. I don't know how creative the solution is but it's the idea I came up with. My neighbor (with full machine shop) fabricated it for me and was there for the victory dance when it broke loose.
That was a major fail because:
1. I didn't have the FULL weight of the machine holding the pin to the jack
2. Even if I DID have the "full" weight of the machine, we're looking at a 30 ton jack and a seven'ish ton (I think) machine
3. Jack simply lifted front of machine up to the extent it could reach. So we had to figure out a way to immobileize the jack, relative to the machine.
4. I don't know how creative the solution is but it's the idea I came up with. My neighbor (with full machine shop) fabricated it for me and was there for the victory dance when it broke loose.