Zetor Proxima GP 80, Operator'S Manual

Page: 139 / 176

Venting hydraulic circuit of hydrostatic steering
E722
1. secure the tractor against movement and lift the front axle
2. start the engine and allow it to run for approximately 1 minute in idle run
3. turn the steering wheel several times to both sides with idle run
4. with maximum engine revolutions, turn the steering wheel 3 times alternately slowly and quickly to both
sides to restricting wheel stop
5. stop the engine
6. after completing the venting check or replenish the oil level to control gauge line. Check the tightness of all
joints and hydraulic circuit guide-ways of hydrostatic steering
7. lower the tractor down to front wheels
Monitor oil level in the tank with all hydrostatic
steering venting steps to prevent air sucking to the
system of steering.
E723
MAINTENANCE INSTRUCTIONS
138