Backhoe 758B backhoe swingarm chain broke

   / 758B backhoe swingarm chain broke #1  

MIkeWard

Silver Member
Joined
May 1, 2008
Messages
228
Location
Long Island, NY
Tractor
Bobcat 2025
The chain snapped on the swingarm . I got a replacement from my dealer.
Here's the problem the hydraulic cylinder is all the way retracted under the housing, I need to extend the cylinder to work on it. I bled off the pressureand tried to pull it out with a come-along-no go.

Before I do something stupid and costly I thought I'd ask ---
What's the best way to pull it out?
Do I need to loosen the hose to allow fluid to leak out as I pull with come-along?
Is there a simpler way?
 

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   / 758B backhoe swingarm chain broke #2  
These must be single acting cylinders, or you could extend hydraulically. Just loosen the hose and pull - it'll self-bleed when you start to use it again. If there's no mechanical interference, you may be able to extend the cylinder by hand.
Jim
 
   / 758B backhoe swingarm chain broke #3  
The chain snapped on the swingarm . I got a replacement from my dealer.
Here's the problem the hydraulic cylinder is all the way retracted under the housing, I need to extend the cylinder to work on it. I bled off the pressureand tried to pull it out with a come-along-no go.

Before I do something stupid and costly I thought I'd ask ---
What's the best way to pull it out?
Do I need to loosen the hose to allow fluid to leak out as I pull with come-along?
Is there a simpler way?

Simpler way? Yes, just start the tractor and operate the swing valve.

The older hoes with roller chain I have seen (Woods, Kubota, etc) all used
a single double-ended double acting cylinder. Is that how yours is set up?
I never owned one with roller chain, but I hear about their problems.

If you have TWO single-acting cyls, JIMMY is correct.
 
   / 758B backhoe swingarm chain broke
  • Thread Starter
#4  
THANKS FOR THE INFO GUYS.
I DO have TWO single-acting cyls.
I just cracked open the hose and pulled the piston out with a come-along.
Took 5 minutes to fix.
Thanks for the replies!

Mike
 
   / 758B backhoe swingarm chain broke #5  
If you had held the valve OPEN the first time you tried to pull it out it would have come...but loosening the hose works to;)
 
   / 758B backhoe swingarm chain broke #6  
I DO have TWO single-acting cyls.

Glad you got it worked out, Mike.

That is a rare (and obsolete) method of swing control. Pls post more
photos when you get a chance. (For those of us who are interested in all
things hoe-related.)
 
   / 758B backhoe swingarm chain broke
  • Thread Starter
#7  
Here are some pics of the backhoe and the chain swing-arms.
Tested it out by grubbing out some small 3 inch oak trees.
Everything is back to normal- except my wallet $150.00 for 3 link chain.

Mike
 

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