KX080 CONTROL VALVE HOSE ASSIGNMENTS BOOM WON’T LOWER

Matchmaker

New member

Equipment
L3410, L3210, L4740. M9000, KX080, RTV, z327
Jul 9, 2022
8
0
1
Ontario Canada
I recently had to remove the control valve manifold from my KX080. A cap head bolt had broken off inside the unit and was leaking hydraulic fluid in a big way. I tried removing it on my own but it ended up having to go to a machine shop to be drilled out and helicoiled. On reinstalling it, I must have mixed up some hoses. I have a few auxillary issues but the big one is that the boom will rise but not lower. There is pressure on both sides going in, but no pressure out to push down the boom. IT sure looks like these are connected properly. Anybody seen this? Any suggested fixes?
 

GreensvilleJay

Well-known member

Equipment
BX23-S,57 A-C D-14,58 A-C D-14, 57 A-C D-14,tiller,cults,Millcreek 25G spreader,
Apr 2, 2019
11,436
4,914
113
Greensville,Ontario,Canada
maybe look/copy the online parts drawings for your unit ?
they may kinda show which hose goes where...
probably kicking yourself for not using coloured tyraps on the hoses ?
 

North Idaho Wolfman

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Lifetime Member

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
30,249
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Sandpoint, ID
The valve and hose layout is in the WSM (aka service manual).
here is a copy, it probably won't be 100% right for your particular model, but the hydraulics will be the same.
 

Matchmaker

New member

Equipment
L3410, L3210, L4740. M9000, KX080, RTV, z327
Jul 9, 2022
8
0
1
Ontario Canada
So I finally had to send the KX to the dealer as we could not get that boom to lower. They were stumped until they had a long chat with Kubota Canada and the WSM for my year was not correct. There had been a modification of the hose assignments…ugh!!!!