684 Power steering and T/A problem

Marty from MN · Aug 30, 2011

My BIL just bought a 684 this past weekend. Nice tractor, but with all used tractors it has a couple of problems.

1. The power steering is either non-functioning or barely functioning. Could this be the MCV stuck?

2. The T/A doesn't shift. It doesn't slip either hi or low, but it also doesn't shift into hi or low. Any thoughts on what to check first?

I'll post pictures next week. It has a factory cab that isn't too beat up for its age.

TIA

JimB2 · Aug 30, 2011

Hi, could be stuck MCV, if the 684 has remotes,
activate one of the remotes without anything
connected to the outlets until the hydraulic
relief valve makes a buzzing/squealing noise.
Sometimes this shocks the system and frees a stuck
MCV.
Check hydraulic fluid level and replace the
hydraulic filter.

Re T/A could be someone disconnected the T/A lever
on top of the torque tube under the battery.
It is difficult to tell if the T/A is in Hi or Lo
if the T/A lever is not working, other than 4th Hi
will not be very fast and 1st Lo will be really
slow.

JimB

684 Power steering and T/A problem

Marty from MN

Member

JimB2

Well-known Member

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