644k Deere hydraulic hose

[excavator]

Working on a 644k hybrid that has a hose leaking off the front of the hydraulic tank. It's the one next to the hydraulic fan pump hose, it looks like a bad oring.. Any ideas on how to get to that hose fitting? There must be a trick since the manual calls for removing the fan pump hose at the 4000 hour service to check the screen. Any one have an idea?

 

[excavator]

I was able to jack the one side of the cab up far enough to use a long extension and crows foot to tighten it up. It's a suction line so not to concerned about the Oring, we'll keep an eye on it. Otherwise to replace the Oring it looks like you have to lift the cab.

 

[mg2361]

Wonderful design, isn't it?

 

[excavator]

So a few weeks later and the fan pump hose off the front of the tank started leaking. Both times the hose fitting was hand tight. This time, rather than jacking up the cab I built a wrench, 3 foot long piece of flatbar with a 1/2" drive ratchet and a crows foot on the end. Snuck it down between the cab and hydraulic tank. Worked great, the fun part of working in the field.