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Ford Tractors Discussion Forum
Show Parts for Model:

Ford 8210 losing power

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stevemilsm

11-06-2011 15:44:38
170.65.128.6



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I have a 80"s model 8210 that when bush hogging I lose pulling power. The RPM"s will drop some but it is mainly that it doesn"t seem to have the power to pull. It will be fine for the first 30 min but when things get warmed up that is when the problem occurs. Any ideas?




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RodInNS

11-06-2011 20:39:31
216.118.158.123



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 Re: Ford 8210 losing power in reply to stevemilsm, 11-06-2011 15:44:38  
Are you saying that travel speed is decreasing while pulling but engine speed remains constant or near constant?
What hydraulic lines got pulled off?

You may have a problem with hydraulic clutch pressure and the Dual Power is slipping. Now is the time to stop before you destroy something...
NEed more info on exactly what is happenign.

If you have a fuel problem the engine will stagger and miss. They don't just lug down or run out of power... they stagger and QUIT when they lose fuel.

Rod

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stevemilsm

11-07-2011 12:08:58
170.65.128.6



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 Re: Ford 8210 losing power in reply to RodInNS, 11-06-2011 20:39:31  
Yes Rod....travel speed is decreasing while pulling but engine speed remains constant or near constant....that is a perfect description
What hydraulic lines got pulled off?......It was a hose going to a bush hog. Got caught in wheel and cut hose.....lost about 5 gallons of fluid.



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RodInNS

11-07-2011 13:20:50
216.118.158.123



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 Re: Ford 8210 losing power in reply to stevemilsm, 11-07-2011 12:08:58  
OK. Forget about the engine. You have a clutch pressure problem.
You need to acquire a 300 psi gauge and look at the main pump housing... and you will see a line coming off the bottom of the housing at an angle and going up to the transmission housing by the cab mount. There will also be another one down to the FWD transfer box if it has MFWD... Anyhow... find this line and look at the pump. You will see a raised gallery running up about half the height of the pump at an angle. There ~might~ be a 1/8" NPT plug in this gallery depending on the age of the tractor. Replacement pumps will have this plug as will most pumps on ~86 or later tractors. Install the gauge here... If it doesn't have the plug you need to remove the line from the bottom of the pump and install a 'tee'. Hook the gauge and the line back to the tee, then start the tractor.
You should find 160-180 psi here with the tractor warmed up, warm oil and running at a fast idle (850 rpm). You also want to run through all the clutch shifts which include DP high and low, PTO on and off and FWD engaged and disengaged. If you find one where the pressure is significantly less than the others it suggests a leak in that circuit (clutch pack). If you find that all are low or that all are slow to achieve pressure then you can expect a problem with a leak at the regulating valve or a weak regulating valve.... or slow fills could indicate an obstructed pump intake (strainer). This strainer is located towards the rear of the pump housing and you will recognize it by the 1/2" square plastic plug. Simply turn this out and wash the screen in varasol taking note of any chips or scum you find in it.
CHeck these things out and post back. Whatever you do... DON'T go and split the tractor looking for a clutch problem before you know where the problem is.

Rod

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stevemilsm

11-06-2011 18:42:31
170.65.128.6



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 Re: Ford 8210 losing power in reply to stevemilsm, 11-06-2011 15:44:38  
come to think of it I don't think the fuel filter was changed or checked.....that will give me plenty to work on tommorow. Thanks for the input guys.



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Jerry/MT

11-06-2011 18:01:29
206.183.116.145



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 Re: Ford 8210 losing power in reply to stevemilsm, 11-06-2011 15:44:38  
If you are sure that your fuel filter is clean, I"d suspect the strainer in the fuel tank is clogged with some crud and it"s restricting the flow intermittently. Either look in the tank when the fuel level is low or pull the fue line off the tank valve and see if you get a steady stream of fuel out.



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showcrop

11-06-2011 17:47:09
75.67.231.80



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 Re: Ford 8210 losing power in reply to Ultradog MN, 11-06-2011 15:44:38  
Generally if you think that you have a slipping situation with power loss the RPMs will go up with decrease in ground speed. I would be looking at fuel.There have been many threads about plenty of fuel coming to the pump, but it turns out to be plenty of fuel for ten seconds. you need to have plenty of flow for a minute. You could have a blockage at your in tank screen, or at a fuel line tee like I had last spring, or maybe the charge pump on the side of your injection pump is bad.

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scott mcintosh

11-06-2011 17:28:22
216.180.204.55



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 Re: Ford 8210 losing power in reply to stevemilsm, 11-06-2011 15:44:38  
When was the air and fuel fiters changed last thats where I would check first. Scott



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stevemilsm

11-06-2011 17:36:00
170.65.128.6



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 Re: Ford 8210 losing power in reply to scott mcintosh, 11-06-2011 17:28:22  
both were changed in the last three months. I lost hydraulic fluid when a hose got caught on the tire. It did run low for a period of time but the current level on dip stick is normal. Is there a wet clutch of some sort that could be causing that?



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