Re: Re: Reverse Engineering, 424 Hydraulics

Posted by BlueLite on December 30, 2003 at 14:22:34 from (216.209.139.147):

In Reply to: Re: Reverse Engineering, 424 Hydraulics posted by pat on December 30, 2003 at 10:13:43:

If your system has the right hand quadrant with draft and position controls, and looking rearward your isolator valve is on the left and fast/slow on the right, it seems to be the same system.

Les see, no lift at all. I assume your hyd motor isn't under load, evident by a working engine. That means your getting flow thru. Your other system also works which tells me your flow and pressure is OK. It could be the linkage at the position plunger. I'd turn off the engine and drain the reservoir and remove the top plate. It's a good idea to have one of those 1.5in swivel mirrors on a stick that they use for finding small screws that fall in the engine compartment on occasion. You can get em at a dollar store I think. Shine a small pen light in the reservoir and slowly pull the position lever to lift. The manual continues.... "the linkage moves the roller away from the rockshaft cam. This allows the position control plunger to move out under spring pressure opening the regulator bleed port" .... and so on.

So watch the position plunger to see if it is being activated by the linkage, if not the problem is in the linkage. My tractor has a small short chain that I assume was replaced by a solid arm in later models. Yours is a 444, so it could be a later make. I discovered my chain was disconnected, that would cause the problem.

If it's working OK, the problem I figure is internal and you may be a candidate for conversion too, or else clean off that work bench and put a nice clean sheet on it, have a compressor for blowing out orifices and start cleaning and disassembling. Some of the other guys here may have a better idea of the problem.

Let us know what you find.

Follow Ups:

• Re: Re: Re: Reverse Engineering, 424 Hydraulics pat 16:16:52 12/30/03 (0)

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