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Recent content by Axl

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    580B Rockford PowerShuttle - Stumped and missing Phil!

    I thought the same thing Manic so we paid the BIG $$$ already and had the case bored and sleeved. We should be as close to new in that area as possible. I have a JD 450E needing my attention and a NAA tractor. I thought the change of scenery may help me think clearer about it in a few...
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    There are multiple ports on the main shaft for lube oil to reach the Torrington bearings. From there the oil returns to the case. the lube oil is supplied by the converter pressure regulator and the position of the flow spool (3.1"). I even have played with the position of the flow spool. If I...
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    That's what I am struggling with.:beatsme I really like puzzles and had good luck in past with projects that were passed on to me by other mechanics. I was hoping someone else had a similar experience because this one is a toughy.
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    Yes, I have the original service manual. There are only two ports which go the shuttle valve. Lube oil (low pressure) is supplied to one or both of the clutch packs not being supplied by the clutch pressure (high pressure). I have used dye penetrate to check for cracks and have found none.
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    It takes a few seconds on start up to have the clutches apply. It is if the pressure from the lube oil is too great. This is not shown on the gauge testing the lube oil, but the test port is upstream of the spool. If i press on the declutch dumping the pressure both clutches are released and...
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    d2r, I found your picture that Phil posted. It is on the thread 580ck shuttle/converter
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    Yes, I thought that could be the problem. I replaced the entire control valve with no change.
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    Manic, I reread your reply. Yes, the clutches are fully released when their is no pressure being applied whether hydraulic or air. I have the cover off where I can view the clutches directly.
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    I forgot to answer one of your questions. Yes, the Rockford and the Twin Disc can be swapped.
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    d2r, Phil has a post some where in the forum with a picture so you can see the difference. Everyone has said the Rockford is easier to rebuild. I suspect because there is no need to use a press to rebuild the clutches. I found the twin disk was very difficult. It is much like the Funk...
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    Manic, I bench tested the clutch packs by blowing through the individual ports on the main shaft and also after installing in the case through the ports on the case. There is lube pressure going through the clutches at all times but not enough pressure to actuate the pistons. This vents the...
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    580B Rockford PowerShuttle - Stumped and missing Phil!

    First, I will have to say this is a great forum. I have been a heavy equipment mechanic for about 26 years now and I find a lot of good information here for even the advanced mechanic. Now, I am looking for some help on an older 580B with a Rockford power shuttle that has me totally beating my...
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