2165 Massey Ferguson

I have a 1972 Massey Ferguson Tractor and I am having trouble with the power Steering. I have replaced the Power steering pump, all the cylinders and hoses.. Still no power steering? Can any one help?

Make sure you don't have an air lock in the lines. If the lines are routed up above the pump on their way to the steering wheel you may just need to bleed out any air at fitting. BTDT

Look in the steering pump with the engine running. You should see fluid circulating. If not, the pump is not pumping.

If you have the old pressure hose (Not the return hose!) from the pump to the steering gear, temporary it back on. (You can do this with the new hose, but it's not good for the hose!)Start the engine and carefully crimp the hose shut with vice grips. You should hear the pump load and the engine slow. If it does, that proves the pump is making pressure.

If both tests pass, the problem has to be in the directional valve in the steering gear.

Hi
I have worked on 165 steering and can only find
3165 on agco parts page no 2165. I am guessing
you have a steering box with no hyd connections
to it and a pump mounted on the timing case or
belt driven from the engine pulleys.

This steering box is then connected to an arm
that runs down the side of the motor to the
front of the tractor.
inside the front grill there is a steering ram
and 2 big cast iron arms. the lower arm is
fixed to a shaft that drops down to through the
front casting to the track bars and front
steering.
The top arm has the steering link attached from
the steering wheel. then there is a large slot
headed adjusting screw with lock nut on the
top arm, that links the top part to the bottom
arm, then a short smaller linkage that connects
to the control spool on the cylinder.

when you move the wheel there should be a
little play between the top arm and the bottom.
that play then moves the small linkage to the
control spool and activates the cylinder. if
you got pump pressure and good cylinder/control
valve. my guess is either that top arm
ajustment is to tight so moving the wheel
doesn't activate the spool linkage soon enough.
the spool linkage is set wrong, a combination
of both or the linkages/ or that adjusting pin
are worn and it doesn't sense the free
movement. you can probably still steer the
tractor just through the steering box but it's
real heavy. I know mine needed re bushing/ pins
replacing on all that top linkage to get it
working, and it was a fiddle of a job to set it
right so it worked.
Hope this might help you a little
Regards Robert