Hydraulic hose replacement Bobcat 773 F Series

[taylof1]

Seeking advice on replacement of leaking Hydraulic hose under the cab(see attached photos). I’ll have a replacement hose made, but at which joint should I remove leaking hose(leak spot circled)? In first photo 1 or 2 mark? In second photo at 1, 2, 3 or 4?

Any other advise or steps I should do while attempting this? Something I read online mentioned changing the seals. Hope this is a straightforward!
Much appreciated!!

 

[brdgbldr]

First of all clean everything before you remove the hose. You do not want to introduce debris into the sytem.

You should have some caps and plugs on hand to stop excess loss of fluid and also to keep debris out.

In the first photo the hose removes at point number 1. Point number 2 is for keeping the hose from twisting as you loosen/tighten the hose.

In the second photo, it is a little hard to tell, it looks like you would remove it at point 2 and hold the hose from spinning at point 1. Points 3 and 4 just appear to be fitting to accommodate the angle that the hose meets the motor.

I have attached a link to the parts catalog so you can look at the exploded view of the hydrostatic system to verify how the hose looks and is removed:
https://partscatalog.bobcat.com/

 

[taylof1]

First of all clean everything before you remove the hose. You do not want to introduce debris into the sytem.

You should have some caps and plugs on hand to stop excess loss of fluid and also to keep debris out.

In the first photo the hose removes at point number 1. Point number 2 is for keeping the hose from twisting as you loosen/tighten the hose.

In the second photo, it is a little hard to tell, it looks like you would remove it at point 2 and hold the hose from spinning at point 1. Points 3 and 4 just appear to be fitting to accommodate the angle that the hose meets the motor.

I have attached a link to the parts catalog so you can look at the exploded view of the hydrostatic system to verify how the hose looks and is removed:
https://partscatalog.bobcat.com/

Much appreciated!! I hope to start on this over the weekend and will let you know how it goes.
Something else I saw recommended using a flair wrench, but if I’m replacing the hose anyway is that necessary? I can’t seem to source one big enough(34 &36mm)

 

[brdgbldr]

Most of the time the hoses are so hard to get too that a lot of us make our tools as we go. I had to use a sink basin wrench to get the hoses to my A300 of and on to rebuild the steering cylinders.

As long as the wrench you use is the proper size and you can actually turn it enough to move the fitting it’s good to go. Flare wrenches are nice and have more surface area so less chance of stripping things. But again, if you can’t get them on the part and turn them they are no better than any other wrench. You can also get opened end wrenches with different angle openings to accommodate turning them. I have way too many tools that only get used for specific purposes but when they are needed they are priceless.

Just a note, I learned from an old timer ( sh!t, I’m the old timer now) that if a part won’t come loose, try to tighten it a little to break it loose land then loosen it. It has worked for me more than once.

 

[B_rad]

I was having a terrible time removing a few hoses (lift arm hoses on an 863 Highflow) within the right side of the machine looking from the back. As most have experienced, just not enough room to move a wrench. I tried open-end wrenches, crows-feet with two ratchet wrenches, and some modified open-end wrenches to know avail. After countless hours, I asked friends for ideas. A farmer friend stated that he had cut hoses off near the crimp fitting, then used a deep-well socket on an impact with an open-end wrench to break them lose. I found that using 1/2" had far less flex when reaching down with extensions from the top. I will no longer fight hand tools if able to reach with a socket and impact...took me apx 45 mins to remove and replace two of the hoses. Best of luck!