Help Bobcat 763f blew left side lift hose

chuckinnc

Member
I have never had to work on the 763 until now and
would like to know whats involved in replacing the
left side lift hydraulic hose. I don"t have a service manual, time is not important sense I only use a few times a year, but would like to know if there is anyone who has done this before.
 
Unless your machine is significantly different than the other Bobcat"s I"ve worked on, the lines running to the lift cylinders go to each rear corner as steel tubes. From there they change to the flexible hydraulic lines that run through the frame to the cylinders.

Typically you can see, and reach the lines through the back door. Basically open the door and look in each rear corner to find the lines. Then trace the one you are looking for back from the cylinder to know which one to change. They are in such tight quarters that they will probably be a royal PITA to break loose. IF you can get a ball pein hammer to them, give the one your trying to break loose a few hard smacks before trying to get it ot break loose. You"d be amazed how much that will help loosen one that would otherwise be tight. Depending on the way the tubes run to the back (I"ve seen them running both horizontally and vertically) as to you might need a crows foot wrench to get the line loose. This is usually the case when the tubes come in horizontally because there usually isn"t enough room to get a full sized wrench in the hole and have enough room to put the force needed to get it broke loose on it too. Too, an angle wrench will usually come in handy too, regardless of the positioning of the line, for basically the same reasons.

In the end it"s really not "rocket science" to change the line, just a PITA due to the tight space. One thing I will suggest is to go ahead and change both lines on the function (up or down) at the same time. The way I have always looked at it, both lines have been in the machine the same amount of time and both have flexed the same amount of times as the boom went up and down. By changing just the line on one side, you basically just create a weak link with the other hose. They typically aren"t but 3 or 4 feet long, and have a male JIC fitting on both ends, so they aren"t usually that expensive.

I hope this helps, and good luck.
 

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