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Farm Machinery
Classic Machinery
Ford 4100 connection to hydraulic tipping transport box
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<blockquote data-quote="Captain Sensible" data-source="post: 7798315" data-attributes="member: 107484"><p>Pete,</p><p></p><p>Were the main hydraulic control levers 'Up' or 'Down' when you did your test & the engine note changed? If you can't remember, try again with them 'Down'. Reason is that a Spool Valve receives & directs hyd pressure independently of the 3pt linkage controls, whereas an Aux valve is just a diverter & linkage isolator valve ...... Once the External Service is selected, the main hyd levers control the flow to it.</p><p></p><p>So if the engine note also changes when the hyd levers are down, you have indeed got a spool valve under there somewhere. If not, you haven't. </p><p></p><p>Whatever the outcome, you've only got a single-acting outlet at the moment. The 2nd (lower) connector is a free return back into the rear axle / hydraulic reservoir.</p></blockquote><p></p>
[QUOTE="Captain Sensible, post: 7798315, member: 107484"] Pete, Were the main hydraulic control levers 'Up' or 'Down' when you did your test & the engine note changed? If you can't remember, try again with them 'Down'. Reason is that a Spool Valve receives & directs hyd pressure independently of the 3pt linkage controls, whereas an Aux valve is just a diverter & linkage isolator valve ...... Once the External Service is selected, the main hyd levers control the flow to it. So if the engine note also changes when the hyd levers are down, you have indeed got a spool valve under there somewhere. If not, you haven't. Whatever the outcome, you've only got a single-acting outlet at the moment. The 2nd (lower) connector is a free return back into the rear axle / hydraulic reservoir. [/QUOTE]
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Ford 4100 connection to hydraulic tipping transport box
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