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Tractor Talk Discussion Forum

back blade wont stay up

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gator

09-20-2004 19:59:55




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it seems to get worse as the tractor warms up.i have a massey ferguson mf85.anyone have any ideas why?




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Mark - IN.

09-21-2004 19:26:21




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 Re: back blade wont stay up in reply to gator, 09-20-2004 19:59:55  
gator, I know nothing about a MF85, but no one else has responded. Have you tried posting on the Massey forum?

My Deere uses the same hydraulics for tranny, power steering, 3 point, loader. All the same system. If you say gets worse as tractor heats up, perhaps have a leaky seal in a cylinder or control valve, and as hydraulic fluid warms up and thins out, is blowing by? Not finding hydraulic fluid on the ground? Control valve is worn and isn't closing properly? Air in hydraulics and need to bleed?

Wish knew more about an 85, but don't. My thinking is simple hydraulic system, have no clue what other components Massey might incorporate in that 85. Sorry.

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gator

09-21-2004 20:02:40




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 Re: back blade wont stay up in reply to Mark - IN., 09-21-2004 19:26:21  
yes it is leaking fluid.im suspecting it might be low on fluid.does thaqt sound like it could be the problem.Also what kind of hydraulic fluid do i use?



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Mark - IN.

09-22-2004 19:25:25




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 Re: back blade wont stay up in reply to gator, 09-21-2004 20:02:40  
Leaking could be anything. Loose fitting maybe? My Deere was leaking because the privious owner split it to change the clutch. When he put back together, he took two long bolts that had to hold the power steering unit on, and used them where two short bolt should"ve gone, so transmission wasn"t tight. Luckily, when I put the four bolts where belonged, all worked out. Was scared it was a main seal.

Point is that it may not be anything serious. Park it somewhere clean, and let set. See where the drops fall and then luck up for them.

As for what hydraulic fluid to use, check the manual. I got a 5 gallon bucket of "Traveller Universal Hydraulic Fluid" from TSC (Tractor Supply). They also come in 2 gallon. Deere requested that it met Deere J2A or J2B standard, this stuff was J2A, B, and C as well as for other makes.

Gator, if I were you, I"d post on the Massey board to ask what type (standard) is needed. Maybe the same stuff will work. Probably will, but may not.

Good luck, hope is simple.

Oh, by the way, I still have a leaky fitting going into one of my loader cylinders, but isn"t bad. Gets worse when fluid gets warm (thinner). For that, I just need to open up and replace an O-ring. Is ok for now, will fix when get time.

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gator

09-22-2004 19:33:56




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 Re: back blade wont stay up in reply to Mark - IN., 09-22-2004 19:25:25  
mark
thnx for all the advice,i appreciate it very much.



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