Re: Re: Re: International 404 not pumping after fi

Posted by UFO Man on June 26, 2004 at 07:09:10 from (66.243.138.50):

In Reply to: Re: Re: International 404 not pumping after filter posted by Dan on June 26, 2004 at 04:52:08:

Ok, bro, back to the book. We'll start with the original problem and go to the now problem.

Let's assume that the filter replacement went as it should. There seems to be a very exact procedure for that.

The troubleshooting guide says as follows:

Response time too slow, could be caused by:
1. Unloading valve piston sticking,
2. Unloading valve orifice plugged (partially)

Next, your now problem

Hitch will not raise, could be caused by:
1. Unloading valve orifice plugged.
2. Unloading valve piston sticking.
3. Flow control valve spring broken, piston sticking or check ball stuck in orifice.
4. Unloading valve ball no seating.
5. Main relief valve spring broken or valve is leaking.
6. Cylinder safety (cushion) valve faulty.
7. Auxiliary valve cover "O" ring damaged.
8. Linkage diconnected from control lever or valve.

The book also says that the unit should be cycled at least 10 to 12 times to purge air, but I don't think that air is the problem here.

It may be that something that was part of the original problem, like a partial plug of the unloading valve is now a plugged unloading valve.

Try this first, remove the filter plug from the transmission top cover at the back of the axle housing. Fill rear center frame to level plug opening with fluid, Start the engine and with the filter plug out, cycle the lift system and any remote cylinders several times, 10-12, then place the levers in the forward position. Cycle the power steering from one extreme position to the other, then straight ahead. Recheck the fluid level. If there is air, this should take it out. If it isn't air, start with the unloading valve and the flow control valve, they seem to be good candidates for being plugged or otherwise not functioning.

Good Luck and keep us posted.

Follow Ups:

• Re: Re: Re: Re: International 404 not pumping afte Dan 09:41:27 06/26/04 (0)

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