Bleeding The Hydraulic Circuit Of The Hydrostatic Steering - Zetor FORTERRA HD Series Operator's Manual

8 - Disconnect both the hoses from the working cylinder
and together with the return hose insert their ends to
a waste oil container.
9 - Start the engine and at the idle speed (max. 10 s) turn
the steering wheel 2 - 3 times to both sides to push oil out
of the steering unit and the pipes.
10 - Secure the tractor against movement and lift the front
axle.
11 - Place an oil collection container under the working
cylinder and by turning the wheels (by hand) push oil out
of the working cylinder.
12 - Reassemble all the disconnected joints.
13 - Fill the tank with oil and bleed the hydrostatic steering
circuit.

Bleeding the hydraulic circuit of the hydrostatic steering

1 - Start the engine and let it run at the idle speed for
approx. 1 minute.
2 - Turn the steering wheel several times to both the sides
at the idle speed of the engine.
3 - At the maximum engine speed turn the wheels with the
steering wheel 3 times alternately slowly and quickly to
both the sides up to the limiting stops of the wheels.
4 - Stop the engine and lower the tractor onto the front
wheels.
During all the steps of bleeding of the hydrostatic steering observe the oil level in the tank to
avoid aspiration of air to the steering system.
After the end of bleeding check or replenish the oil level to the dipstick mark. Check all the connections and
lines for leaks.
MAINTENANCE INSTRUCTIONS
139 139
F_02_114
F11N035
F11N036