FIY : Control box knob removal

[BERZERKER888]

a simple gear puller and wa-la, no huge pita to remove the hydraulic manifold to service your rotary valves..and not a single LMTV "F"- Bomb dropped..lol

 

[BERZERKER888]

and this is where my fluid leak is seeping out from .

 

[BERZERKER888]

and this is the o ring that needs replacing ?

 

[Mullaney]

and this is the o ring that needs replacing ?View attachment 842588

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Guessing - but since all of those parts are called out under Item 14, they are part of a rebuild kit.

I would lay everything out like the exploded view in your picture.
Then, if you take those parts to a hydraulic shop, you should be able to get replacements.

 

[BERZERKER888]

.
Guessing - but since all of those parts are called out under Item 14, they are part of a rebuild kit.

I would lay everything out like the exploded view in your picture.
Then, if you take those parts to a hydraulic shop, you should be able to get replacements.

As in the Harbor Freight Hydraulic Shop O-Ring Division?….lol

 

[Mullaney]

As in the Harbor Freight Hydraulic Shop O-Ring Division?….lol

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Yes sir, I have done the same myself.

When I finally started to understand that there are metric and standard O-Rings my success rate went way up. Also have discovered that often HF is as good as any. Other times - not so much. Only advantage to a place that specializes in hydraulics often get rubber compounds that are more durable.

 

[BERZERKER888]

Are the rotary valve o rings metric or SAE?

 

[Mullaney]

Are the rotary valve o rings metric or SAE?

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I believe they are metric. Northern Tool has them in metric or standard. Guessing HF does too.

UST Metric O-Rings - 419-Piece Set, Model W5203

McMaster-Carr carries the weird stuff if you need another option.
Water, Steam, Oil Resistant - Round Rings and Quad Rings too.

 

[BERZERKER888]

thank you !

 

[Awesomeness]

Once you got the knob off, did you try unscrewing the valve (hex head)?

 

[BERZERKER888]

Once you got the knob off, did you try unscrewing the valve (hex head)?

I took it completely apart...there is aluminum pin that holds the assembly together...the 2 small o rings needed attention.... reassembled and now I have zero leaks out of the rotary valves...

 

[BERZERKER888]

 

[FarmingSmallKubota]

my leak is coming from under the cap knob, i have replaced all of the 4 orings and PTFE Backer rings. the TM does not show breaking it down like this where are the aluminum pins and what size puller is that because i could not get the cap off with my small puller and the larger one would not go behand the cap

 

[BERZERKER888]

 

[BERZERKER888]

the red dot shows 2 o rings... the 25 year old, hard with squared edges and the new HF Blue O Ring ... 86 the the old o ring.....that was the cause of the leakage behind the knob...

 

[BERZERKER888]

be advised , sometimes there is a small set screw underneath the knob... I "rebuilt" all 4 of my selector valves but did not find single set screw in any of the knobs...