MAINTENANCE INSTRUCTIONS

5 - Unscrew the tank lid

6 - Replace the filtration element

7 - Install the new element

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.

Replacing The Hydrostatic Steering Hoses

The hoses must be replaced after four years from the production date (the date is indicated on their surface) or after 3500 hours of work of the tractor or immediately after discovering signs of their damage (hose sweating, local buckling, leaks of the working media around the end pieces and on the hose surface, abrasion of the hose surface to the metallic reinforcement, damage of the outer yarn braiding in the case of low-pressure hoses).

In case of a pump failure or after stopping of the engine the steering capability is maintained, but the required steering force gets higher. You can drive the tractor at a reduced speed to the nearest workshop. The steering wheel must not be held in the limit turning angle positions for a long time (the maximum time is 20 s); otherwise the oil in the hydrostatic steering circuit is heated up excessively.

Coolant Replacement

Proceed as follows:

1. Open the heating valve and release the overpressure plug (C) on the compensation tank.

2. Drain coolant from the cooler. The drain plug (A) is accessible after lifting off the left side plate.

3. Drain coolant from the engine block. The drain valve (B) is accessible after disassembly of the right side plate.

4. After draining the coolant close both the drain valves (leave the heating valve open).

5. Fill the cooling system with coolant up to the neck of the compensation tank and close it with the overpressure plug.