Personal injury or death could result when towing a disabled machine incorrectly.
Always block both tracks before disengaging the final drives. When the final drives are disengaged, the brakes are also disengaged. The machine can move.
Follow the recommendations below, to properly perform the towing procedure.
To tow the machine, both final drives must be disengaged.
Do not operate the track motors with the final drives disengaged. Damage could result.
This machine is equipped with spring applied, hydraulic pressure released brakes. If the engine or power train hydraulics are inoperable, the brakes are applied and the machine can not be moved.
These towing instructions are for moving a disabled machine a short distance, only a few feet at low speed, no faster than 2 km/h (1.2 mph), to a convenient location for repair. These instructions are for emergencies only. Always haul the machine if long distance moving is required.
Shielding must be provided on the towing machine, to protect the operator if the tow line or bar should break.
Do not allow operator on the machine being towed, unless the operator can control the steering and/or braking.
Before towing, make sure the tow line or bar is in good condition and has enough strength for the towing situation involved. Use a towing line or bar with a strength of at least 1.5 times the gross weight of the towing machine, for a disabled machine stuck in mud or when towing on a grade.
Attach the tow line only to the tow hooks on the frame.
Do not use a chain for pulling. A chain link may break causing possible personal injury. Use a wire rope cable with loop or ring ends. Use an observer in a safe position to stop the pulling procedure if cable starts to break or unravel. Stop pulling whenever the pulling machine moves without moving the towed machine.
Keep the tow line angle to a minimum. Do not exceed a 30° angle from the straight ahead position.
Quick machine movement could overload the tow line or bar and cause it to break. Gradual and smooth machine movement will work better.
Normally, the towing machine should be as large as the disabled machine. Satisfy yourself that the towing machine has enough brake capacity, weight and power, to control both machines for the grade and distance involved.
To provide sufficient control and braking when moving a disabled machine downhill, a larger towing machine or additional machines connected to the rear could be required. This will prevent it from rolling uncontrolled.
The different situation requirements cannot be given, as minimal towing machine capacity is required on smooth level surfaces to maximum on inclines or poor surface conditions.
225B Final Drive Disengagement and Engagement
- 1. A disconnect pinion is located at the top of each final drive housing, behind the sprocket.
- 2. Remove two bolts and the bracket on top of the pinion retainer.
- 3. To disengage the pinion, use a 1/2 inch square drive to turn the retainer counterclockwise. Turn the retainer until the bracket can be turned 90° and installed under the retainer, with the slot in the bracket locking the retainer.
- 4. To prevent the retainer from moving while towing, bolt the bracket to the final drive housing. Use the two bolts through the slotted holes in the bracket.
- 5. Reverse the procedure for final drive engagement. (If the retainer will not push the pinion into engagement, back the retainer out and force a partial rotation of the sprocket to align splines. Then engage the pinion and install the bracket.
229 Final Drive Disengagement and Engagement.
- 1. To disengage the final drives, block the tracks. Remove the access plug in each final drive.
- 2. Back the nut out until it is flush with the end of the rod. Install the plugs.
- 3. To engage the final drives, remove the access plugs. Tighten the nuts to 383 ± 18 N·m (282 ± 17 lb. ft.).
3/4 inch (1.5 cm) of thread should be visible on the rod. If not, loosen the nut. Force a slight turn of the sprocket. Torque the nut.
- 4. Install the plugs.