5-2 Lower Mechanism: Travel Drive Unit 3. Purpose of Motor This motor is exclusive for open circuit. Do not use it for closed circuit. This motor employs a direct drive. The reduction gear housing (output part) must be directly installed to the driven part of the machine main unit. Also, this motor should be used with a sprocket drive mechanism. Therefore, the driven part must conform to this mechanism. Do not use this motor when the motor installed position is significantly displaced from the load-operating position, or when a large bending moment is applied to the motor from the driven part. This motor should only be used when the motor shaft is horizontal. Do not use this motor when the driven part is held horizontal. This motor can be used storing inside the drum. In that case, install the roller bearing on the side opposite the motor. Although the double counter balance valve and the parking brake function come equipped with this motor, it cannot be used as a winch.
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