Hydraulic Manifold Valve Knob

[j_boucher]

I did some searching but cannot find how to get the selector knob off of one of my Valves, it seems it has a slow drip and from what I've seen I need to get the knob off to get at a small o-ring in the valve assembly. With the huge price markup on items for these trucks, I don't want to break the knob that will prob cost 100 or more to replace it

Thanks in advance

 

[Guyfang]

Might help if you tell folks WHAT valve you are talking about.

 

[j_boucher]

Might help if you tell folks WHAT valve you are talking about.

There are only four selector knobs on the Hydraulic Manifold to get specific it will be the Spare tire Raise and lower selector

 

[Mullaney]

I did some searching but cannot find how to get the selector knob off of one of my Valves, it seems it has a slow drip and from what I've seen I need to get the knob off to get at a small o-ring in the valve assembly. With the huge price markup on items for these trucks, I don't want to break the knob that will prob cost 100 or more to replace it

Thanks in advance

.
You might look in the TM, Parts in particular...
I extracted two pages that might be useful.

There is a WAD of O-Rings in those little selector valves.

There is another source of information - written in regular english - that might also help.

FMTV LMTV Common Issues & Fixes

FMTV LMTV Common Issues & Fixes Here are some things to check on an FMTV, some fixes for them, and a few upgrades. In no particular order. Driveline Vibrations - Broken Water Pump, Alternator, or other Extremity Engine Accessories Stiff gas pedal Loose air compressor bracket; Oil tube broken...

docs.google.com

Search for "Air / Hydraulic Unit Repair"

And, if you want the part numbers for O-Rings and Backer Rings, click to expand:

 

[FarmingSmallKubota]

 

[j_boucher]

Thanks but there is still nothing on taking the selector valve off to replace the small oring, on the inside of the valve ( suspected culprit ). Looks like there is a pin under the selector valve that holds the valve together

 

[FarmingSmallKubota]

Thanks but there is still nothing on taking the selector valve off to replace the small oring, on the inside of the valve ( suspected culprit ). Looks like there is a pin under the selector valve that holds the valve together

You asked about taking the knob off. that is what the video shows. After you get the valve out its just orings and backing rings. I replaced mine to learn that it was just 2 wornout and was cheaper in the end to replace the whole unit. which is a lot of fun . saved the old unit for parts.

 

[j_boucher]

I believe I found it

Thanks for the help