Venting Hydraulic Circuit Of Hydrostatic Steering - Zetor Major 80 Operator's Manual

VENTING HYDRAULIC CIRCUIT OF HYDROSTATIC STEERING

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 slow-
ly 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.
MAINTENANCE INSTRUCTIONS
127
E722
Monitor oil level in the tank with
all hydrostatic steering venting
steps to prevent air sucking to the
system of steering.
E723