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Massey 4270 4wd solenoid location

  • 02-04-2017 03:46PM
    #1
    massey101
    Registered Users, Registered Users 2 Posts: 22 ✭


    Hi lads jst wondering where the 4wd solenoid is located.. 4wd is coming on in the dash bt its nt working. Shaft and gearbox seem to be ok. Wud it be possible the solenoid is wrong


Comments

  • #2
    mad-for-tar
    Registered Users, Registered Users 2 Posts: 168 ✭✭mad-for-tar


    Behind RH wheel in front of rear axle is the tandem pump / filter / manifold assembly. In front of the centrifugal filter bowl at its base are 2 solenoids facing forward. Inner one closest to rear axle housing is 4WD, outer one is diff lock. Can be swapped as a test to rule out electrical part holding open keeping pressure applied. Check with multimeter, should be 12v at connector with 4WD switched off and 0v when brakes applied or 4WD switched on. If not happening like this could be brake switch fault. If it is ok, next step would be to pressure test, should have 22 to 24 bar on line into the clutch when 4WD off and no pressure when it's switched on or brakes applied (coupler engaged by spring pressure and needs hyd pressure to keep 4WD off). If all behaving ok, then internal issue is suspect.
    HTH.


  • #3
    massey101
    Registered Users, Registered Users 2 Posts: 22 ✭massey101


    mad-for-tar wrote: »
    Behind RH wheel in front of rear axle is the tandem pump / filter / manifold assembly. In front of the centrifugal filter bowl at its base are 2 solenoids facing forward. Inner one closest to rear axle housing is 4WD, outer one is diff lock. Can be swapped as a test to rule out electrical part holding open keeping pressure applied. Check with multimeter, should be 12v at connector with 4WD switched off and 0v when brakes applied or 4WD switched on. If not happening like this could be brake switch fault. If it is ok, next step would be to pressure test, should have 22 to 24 bar on line into the clutch when 4WD off and no pressure when it's switched on or brakes applied (coupler engaged by spring pressure and needs hyd pressure to keep 4WD off). If all behaving ok, then internal issue is suspect.
    HTH.

    Thanks for that.. got it sorted the sleeve over the splines in the drive shaft had slipped back


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