TROUBLESHOOTING When the engine is switched off, the power-assisted steering is not operational, i.e. you have to apply much more force to steer the machine. If you lift up the rear axle of the machine with a lorry-mounted crane, you can tow off the machine over longer dis- tances and at speeds exceeding 1.2 mph (2 km/h). Before you do this you must, however, remove the cardan shaft of the front axle. In addition, secure the articulated steering with the locking bar, in the same way as it is re- quired for transport of the machine on a low bed loader or by train.
21.12TOWING A MACHINE WITH DEFECTIVE BRAKES If the brakes of the machine that you want to give a tow are defective, uncontrolled movement of the machine may cause a crash while it is being towed! Always use two machines to tow off a machine with defective brakes. Connect all three machines with appropriate towing attachments. If you want to tow a machine a with defective brakes, or if you have to tow a machine driving downhill, use two machines for towing. Attach the machine that you want to give a tow to a larger machine with sufficient tractive and braking force. Attach a second machine to the rear part of the machine that you want to give a tow.
In this way, you avoid uncontrolled movement of the machine. Towing can be performed under various conditions. Thus, it is impossible to determine all the requirements that may apply to a particular condition. When towing on an even and horizontal surface, the tractive force that you need is much less than the tractive force that you need when towing on a slope or uneven surface. Please ask your local Komatsu dealer for details, if you want to give a particular machine a tow. 119