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Re: High houred 8970

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12-27-2012 19:25:02

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So now I'm worried :(

What are good numbers for flow and pressure on the remotes? I have a pressure gauge for testing remotes. How does one get the hydraulics hot on a dealer lot. Our farm is 100 miles away from the dealer.

What about the 3 point?

Are the mag plugs seperate from the drain plugs? On the other fords we have they are integrated. Do I demand them to be drained and checked? I don't want to be a PIA but I don't want to be taken either.

Should I get ahold of the previous owner as the dealer has his number.

I was wondering about the brakes taking out the power shift. Dealer stated the brake disks were warped and the reason they were replaced. Warped means it got hot to me. Can ECU data be pulled and reviewed?

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12-27-2012 22:06:15

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 Re: High houred 8970 in reply to jbirnsch, 12-27-2012 19:25:02  
You can't test flow using a pressure gauge only, but I'm sure you know that.

Best way to get the oil hot is to bring along a jumper hose and loop it into two couplers of the same valve. Flow oil through this hose. Then deadhead another remote. This should force the pump to pump full flow and full pressure. This assumes the tractor is not MegaFlow. If it is MegaFlow, do this test using remotes # 1 and 2, or 3 and 4. Do this until the filter gets hot to the touch. That should be good enough.

I believe that standby pressure on those rigs was around 2750. Without a flowmeter though, you have no good way to test pump performance.

Not sure on the drain plugs. If it were me, I'd drain the oil and pull and check the suction screen.

It's been years since I've looked at codes on those things. I'm not sure whether overheat codes are permanently stored or if they're lost on a battery disconnect. Wouldn't hurt to have the dealer plug in and take a look if he has the tool. Absent the tool, a lot of info can be gleaned from the dash cluster, if you have a manual nearby to interpret the numbers.

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12-27-2012 20:12:57

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 Re: High houred 8970 in reply to jbirnsch, 12-27-2012 19:25:02  
If the brakes got hot and warped... they crapped their linings into the oil. Then you have a plain pure nightmare to clean all of the crap from the system, particularly the hydraulics. If it was operated that way for any period of time (and it probably was)... I doubt the hydraulics will ever be the same.
I'm trying to remember the specs on them. IIRC, a standard single pump system should make 34GPM @ 2750 psi and that might take a couple of remotes to flow that much. Mega's should make 55 gpm at 2750 psi.... and I mean maintain that pressure at full flow.... not just deadhead a guage to 2750 or make rated flow at no pressure.

I would expect the mag plugs to be either drain or drain/level plugs on the planetaries.

At this point in time I'd demand to talk to the previous owner AND drain the oil... because the previous owner probably didn't disclose whatever ails it so dealer may legitimately not know....


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