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Tool question?

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VaTom

03-03-2001 06:37:15




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I'm not sure this is exactly a tool question and I did post it to the track guys next door. Problem today is getting the end off a 4" d. hydraulic cylinder to rebuild it. I only have room for a 4' cheater bar unless I take the cylinder to the shop. Then I don't know a good way to anchor it while I turn. I'm hesitant to heat it up but don't know what else to do. Any ideas? Other than steroids or Wheaties. Gotta do this four times to get the machine working. The cylinders are crane stabilizers. I was amazed the wrench with the two pins (whatever it's called) didn't break. Maybe there's a tool I don't know about for this use? I could take it to the Cat dealer, but I could probably buy new cylinders for the same price. Thanks.

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Taylor Lambert

03-04-2001 12:07:59




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 Re: Tool question? in reply to VaTom, 03-03-2001 06:37:15  
I worked breifly in a hydraulics shop, they had pins welded to the work table that you slid the eyehole through to hole the cylinder. When i quit i had a few to rebuild so i welded a pin to my work bench then to suport the cylinder i welded a short peice of 4x4 angle iron to the table to act like a cradle or v block. Ive built alot of them on it.



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jimmyzz

03-03-2001 22:37:49




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 Re: Tool question? in reply to VaTom, 03-03-2001 06:37:15  
I take it you are trying to remove threaded gland from cyclinder tube and it has holes for spanner wrench. I have found these so frozen that the tool will not work and have devised technique that works well, but sounds rather drastic. I take a piece of steel like 8" long, maybe 1/2x3/4". Weld this to face of gland.You will be able to rap steel with hammer and unthread gland. Sometime s you will have to heat tube to break loose or tap tube at thread area. Be cautious welding not to get near chrome rod. When you get gland off cut off piece of steel and grind surface,clean threads and assemble with spanner.

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T_Bone

03-03-2001 12:06:22




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 Re: Tool question? in reply to VaTom, 03-03-2001 06:37:15  
Hi Tom, Most cylinders have some sort of cap lock. Mine was a strap of metal bolted to the cylinder. I didn't take the time to make a spanner wrench but used a chain wrench that worked well.

They also may use a "O" ring oil seal under the cap and the cylinder rod wiper will take a good amount of heat. I straighten a rod with the cylinder together, then installed it to see if the rod pits would leak with the old seals and they didn't.

I used a 6" vice and let the oil feed pipe stubs rest against the jaws for a stop for taking the rod caps off and the vice jaws just tight enough to hold the cylinder from falling out of the vice.

One thing you might try is to hold pressure against the spanner wrench then have someone tap against the cap and cylinder with a brass hammer.

T_Bone

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Nathan(GA)

03-03-2001 07:23:30




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 Re: Tool question? in reply to VaTom, 03-03-2001 06:37:15  
VaTom, I'm sure you'll get a better answer, but sometimes those type things need a quick blow rather than brute force. Can you strike the wrench with a dead blow hammer or regular one? Just be careful not to break the shoulders off the slots.



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bill hillbrant

03-03-2001 12:28:01




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 Re: Re: Tool question? in reply to Nathan(GA), 03-03-2001 07:23:30  
if you have a press- anchor the dead end in the press and continue with the wrench-bill



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