3. OPERATION 3. 9 TOWING 1. When winching or towing a stuck loader from the rear, always lower the lift arms until the attachment is resting on the ground and then follow the shut-off procedure (See Section 3.1-3). 2. When winching or towing a stuck loader from the front, lower the attachment so that the front attachment points are accessible and have an assistant block the attachment, then follow the shut-off procedure (See Section 3.1-3). 3. Attach a properly rated chain, cable or towing strap to the towing points provided (Fig. 3.8A). 4. Deactivate the brake system for towing. To release the park brake, turn the release button on the brake valve counter clockwise.
Pressurize the brake release quick coupler to 218 PSI (15 Bar). This will release the motor brakes for towing. See maintenance section 4.7- 6 for details. C3934 Fig. 3.8A 5. Open the pump bypass valve (manually operated). To accomplish oil bypass, turn the bypass valve nut (Fig. 3.8B) counter-clockwise two (2) revolutions. (DO NOT open the valve past two (2) turns.) When open, the valve connects both sides of the pump/motor circuit and allows the motor to turn for towing short distances at low speeds without running the engine. The valve closing torque is 7-10 ft. lbs. (9.5-14 Nm). * Damage to the unit may result from over-torquing the bypass valve. 6.
The attachment point on the towing or winching equipment should be kept as low as possible and in as direct a line as possible with the stuck loader. A steep tow line angle or side pull could result in upsetting the stuck loader. Never install tie down chains across the bucket cylinders. Damage to the cylinders may occur. IMPORTANT To avoid personal injury, lower the lift arms, shut off the engine, raise the seat bar and cycle the lift arm and bucket controls to ensure they are locked. Then, unlatch the seat belt and exit the loader. Do not enter or exit with the engine running unless as specified in this manual or under specific service and backhoe operating procedures.
WARNING 32 Bypass Valve C3935 Fig. 3.8B C3935 Fig. 3.8B