Massey Ferguson 6180 clutch/trailer brake

Discussion in 'Machinery Matters' started by Kcoleman, Nov 8, 2018.

  1. Kcoleman

    Kcoleman Member

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    Just wanna pick a few brains here. I bought a 6180. Trailer brakes didnt work so I tried to bleed trailer brake valve under cab. I can get oil flowing freely from valve but the pressure at the brake pipe where brakes are connected won't build up. I now notice it can be hard to get tractor into gear. The tractor tends to creep forward or backwards before going into gear, with a struggle. I think all the hydraulics are in the same circuit and I've lost pressure somehow.. Has anybody encountered something similar? Thanks
     
  2. headcase

    headcase Very Senior Member

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    i know nothing specific to this tractor but looking at the parts book there's a low pressure distribution block(by master cylinders) for the brakes and i think clutch
    have you bled the clutch as well?
     
  3. jpt

    jpt Well-Known Member

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    Any issues with the other hydraulic functions,lift,pto,4wd,is the steering heavy.
    Are there any lights showing on the dash,has it had fresh oil and the three filters changed,cleaned lately.
    Did you clamp the return pipe from the distribution valve when bleeding the brakes.
    .
     
  4. Kcoleman

    Kcoleman Member

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    The back end is fully serviced and all filters changed.. There are no lights on the dash and all other hydraulics/steering and pto work fine.. I also clamped the pipe under bonnet when trying to bleed the trailer brakes.. The normal tractor brakes work perfect too
     
  5. Arthur

    Arthur Well-Known Member

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    They might be 2 separate issues, the difficulty getting into gear might be a leak in the hydraulic release bearing with the creeping caused by pressure on the synchros, the trailer brake valve might be stuck.
     
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  6. scoffcruddle

    scoffcruddle Well-Known Member

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    I've seen the valve stuck on a 600 Massey,it was a Bosch valve and worked fine once we'd figured the problem.
     
  7. johndeere6920s

    johndeere6920s Well-Known Member

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    The 6290 was a right see you next Tuesday to bleed the trailer brake valve in just drove her for a few days and it half self bled.
    Put a hose on then and kept pumping the pedal got all the air out
     
  8. diesel power

    diesel power Well-Known Member

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    I think there's a bleed nipple down on the side of the bell housing on the left side if memory serves me for the clutch. It was that way on the 3650 mf we had anyway. It used get air into the circuit every now and then for no reason we could ever figure out and it used result in the trailer brakes stopping and the clutch only half disengaging. Wasn't hard to bleed when it did.
     
  9. jpt

    jpt Well-Known Member

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    There should be a clutch valve with bleed screw on the right side gearbox cover on the 61s.
     
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  10. jpt

    jpt Well-Known Member

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    Have you cleaned the strainer filter above the pick up hitch.
     
  11. Kcoleman

    Kcoleman Member

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    Tried bleeding the clutch under cab.. Improves slightly but still very hard to get into gear..when oil is warm. Gonna replace seals etc in clutch master cylinder and see does that help.. Also gonna test low oil pressure circuit that operates clutch.. All filters have been changed in the back end already
     
  12. jpt

    jpt Well-Known Member

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    Could be that the Accumulator has lost pressure.
     
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  13. Kcoleman

    Kcoleman Member

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    Turned out the trailer brake was stuck as Arthur said above. Im gonna test the pressure at the clutch valve, under right side of cab, to see is it 17 bar as it should be. If not I think Ill get the accumulator tested to see is it 9 bar.. I think thats what they are supposed to be anyway.
     
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  14. Dave 6180

    Dave 6180 New Member

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  15. Kcoleman

    Kcoleman Member

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    I had to take the trailer brake valve had to come off and be opened to free out a little valve inside it
     
  16. Howie

    Howie New Member

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    Does anybody know what fitting is required to test the components of low pressure hydraulic system in a 6180. I recently got a new accumulator fitted. Came set at 11bar, my steering is very light not sure if orbital unit or seal away in ram itself, the brake pedal goes down a good bit, clutch can be very jumpy an I lost all brake pedal this morning while drawing second 11ton load of stone was rather scary try to get stopped. The brake pedal then came back about an hour later though. Not sure exactly what to do.. never buy a tractor from Howard Fulton tractors Northern Ireland complete nightmare.
    Thanks for any responses
     
  17. jpt

    jpt Well-Known Member

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    I’m nearly certain the accumulator should be set to 9bar for a 6100 series.
     
  18. Howie

    Howie New Member

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    Hello ok no problem, what’s the safest way of taking the accumulator off to get the pressure dropped to 9bar? Thanks
     

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