Operator's Manual

1.59

MAINTENANCE

De-commission the hydraulic service braking system as follows:-

Open the transmission bypass valve situated as shown on top of the

transmission pump.

The valve is fully open at 3 anti-clockwise revolutions. Do not open

the valve past 3 revolutions.

The steering must be operated manually when the mower is being

towed. The steering will feel heavy as there is no hydraulic assis-

tance when the engine is switched off.

The mower is now in a freewheel condition and can be towed for a

short distance at slow speed.

Remove wheel chocks before towing.

After towing the mower: To return the mower to its normal work-

ing condition the following procedure must be adopted.

Chock the front wheels and re-commission the hydraulic service

braking system as follows :-

i) Close the transmission bypass valve. Turn clockwise and

tighten to a torque of 48- 52 Nm.

Re-commission the front wheel motor disc brakes as follows :-

i) Identify the right hand front wheel motor disc brake assembly.

Rotate the setscrew (item 5) anti-clockwise and remove together

with washer (item 4) and brake release bar (item 3). Reassemble the

rubber plug (item 2) into the motor end plate.

ii) Identify the left hand front wheel motor disc brake assembly and

repeat the previous procedure.

Store the brake release bars, washers and setscrews (items 3, 4 and

5) for future use.

Remove the wheel chocks.

Disconnect the tow bar.

The mower braking system will now operate in the normal way.

WARNING: PREVENT ACCIDENTS - Before using the

mower, ensure that the braking system operates correctly.

Carry out initial checks with the mower at slow speed.

Do not operate the mower with a defective braking system.

Do not operate the mower with the brakes de-commissioned.

TOWING THE MOWER Continued.

1. Front wheel motor.

2. Rubber plug.

3. Brake release bar.

4. Washer - M12 - (09485).

5. Setscrew M12 x 40 - (ZDH1L040U).

Bypass Valve

1D950R01