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Ford 9N, 2N & 8N Discussion Forum
Show Parts for Model:

Re: No Hydraulic Action

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ZANE

08-08-2014 04:33:18
98.83.59.153



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One of the greatest enemys of the hydraulic systems on these Ford tractors is any restriction in the suction side of the hydraulics. The pump is prone to draw in air at the shaft seal and the more the restriction the more air. These pumps won't pump air. It just lets the air pulse and no oil will flow. Even when Ford did put a filter in the later tractors it was in the dump side of the system and under pressure. Not on the suction side.

Zane

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Tall T

08-08-2014 08:26:36
24.108.0.163



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 Re: No Hydraulic Action in reply to ZANE, 08-08-2014 04:33:18  
Thanks Zane . . . filter on the pressure side sounds good.

I don't know yet but I am thinking that hydraulic filters may actually be "designed" for the suction side as well and as such would be less restrictive with a possibly less fine filter medium

and lower pressure relief to facilitate by-passing, for when the filter medium is saturated.

Now to put the new gage on the filter mount to see what it tells me.

I forget where I saved this from:

"The OMT range of filters fits into return lines of hydraulic circuits (pressure up to 20 bar), suction lines and medium/high pressure lines (100/420bar).

Depending on the models, they can be equipped with accessories like differential clogging indicators (visual and electric), pressure gauges, pressure switches, by pass valves etc."

So here's something to ponder.

Suppose some people had just measured the filter gasket and put any spin on there that would fit. Any restricted flow would then be attributed to the filter system itself and such systems would then get a bad rap.

Cheers,

Terry

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