Bobcat 753, Need help with replacing the driver's side hydraulic boom cylinder hoses

PLEASE HELP! could someone share with me the best way to change the driver's side hydraulic boom cylinder hoses on My 1999 bobcat 753, so far I have disconnected both hoses from the hydraulic boom cylinder and remove the cylinder along with the air filter housing for better access. I can see both ends of the hoses, But I can't get a good hold on them with a wrench. I do not want to remove anything that's not necessary to remove the lines and I don't really want to open up any more of the hydraulic system if it is not necessary! SO, I AN HOPING! someone here could tell me the best way to proceed! Is there any special tools I need? Is there any other lines I need to remove to gain better access? So what's the trick to doing it correctly? I would certainly appreciate any help!

I try and remove the hoses in the engine bay, then pull the cylinder out and remove the other end with it out of the machine.
Sadly there is no easy way of doing it, access is not good, you just need to try and squeeze in there.

Tazza said:

I try and remove the hoses in the engine bay, then pull the cylinder out and remove the other end with it out of the machine.
Sadly there is no easy way of doing it, access is not good, you just need to try and squeeze in there.

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The upper cylinder hoses are already disconnected and the cylinder is already out! It the other end of the cylinder hoses in the engine bay, that I'm trying to remove in order to put the new lift cylinder hoses back in. The problem that I'm having is that they are behind two other larger hard lines.

bigmcshawn said:

The upper cylinder hoses are already disconnected and the cylinder is already out! It the other end of the cylinder hoses in the engine bay, that I'm trying to remove in order to put the new lift cylinder hoses back in. The problem that I'm having is that they are behind two other larger hard lines.

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Crowfoot wrenches and cursing. There is no real secret other then they are a bitch.

Bobcatdan said:

Crowfoot wrenches and cursing. There is no real secret other then they are a bitch.

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That's what I figured! These hoses probably take more of a beating then any other on the machine.....You would think? a good engineer would know IT!!!

bigmcshawn said:

That's what I figured! These hoses probably take more of a beating then any other on the machine.....You would think? a good engineer would know IT!!!

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Consider yourself lucky your machine isn't older. They use to use fitting on the hose that where the color of brass and about as strong. Those had no interest in doing anything other then rounding over. Image trying to what you are with a vice grip because the hex is long gone. At least a 99 should have the good fittings because once you get a wrench on them, they will be tighter then all holy hell.

Bobcatdan said:

Consider yourself lucky your machine isn't older. They use to use fitting on the hose that where the color of brass and about as strong. Those had no interest in doing anything other then rounding over. Image trying to what you are with a vice grip because the hex is long gone. At least a 99 should have the good fittings because once you get a wrench on them, they will be tighter then all holy hell.

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They certainly were tighter then all holy h*ll!! One line I removed with the hardline attack and it's still was a SOB! to get separated. the other one I had to break loose in the machine and that was absolutely ridiculous how hard that was!. Is there anything special I need to do to bleed the system before running the machine?

bigmcshawn said:

They certainly were tighter then all holy h*ll!! One line I removed with the hardline attack and it's still was a SOB! to get separated. the other one I had to break loose in the machine and that was absolutely ridiculous how hard that was!. Is there anything special I need to do to bleed the system before running the machine?

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Should self bleed

bigmcshawn said:

They certainly were tighter then all holy h*ll!! One line I removed with the hardline attack and it's still was a SOB! to get separated. the other one I had to break loose in the machine and that was absolutely ridiculous how hard that was!. Is there anything special I need to do to bleed the system before running the machine?

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When I did the bucket tilt cylinder hoses that run up to the boom on my 440B, I ended up cutting the hard lines, as there was just no way in h*ll that you could get to the connections with any sort of wrench, crows foot or otherwise, let alone turn said wrench.
I then spliced the tubes back together with a pair of hydraulic compression unions. Worked out great!
Cheers - SR

SkidRoe said:

When I did the bucket tilt cylinder hoses that run up to the boom on my 440B, I ended up cutting the hard lines, as there was just no way in h*ll that you could get to the connections with any sort of wrench, crows foot or otherwise, let alone turn said wrench.
I then spliced the tubes back together with a pair of hydraulic compression unions. Worked out great!
Cheers - SR

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SR - tried for two weeks (well probably 10 hours total) to remove the same lines on my 440B. Tried crowfoot, bent narrow wrenches, thought about cutting an "inspection hole". This weekend I cut the hard lines in the engine bay as you did but then had longer hose made up to meet the cut. Eliminated about a foot of the hard lines.