Personal injury or death could result when towing a disabled machine incorrectly.
Block the machine to prevent movement before releasing the brakes. The machine can roll free if it is not blocked.
Follow the recommendations below, to properly perform the towing procedure.
These towing instructions are for moving a disabled machine for a short distance at low speed. Move the machine at a speed of 2 km/h (1.2 mph) or less to a convenient location for repair. These instructions are only for emergencies. Always haul the machine if long distance moving is required.
Shields must be provided on both machines. This will protect the operator if the tow line breaks or the tow bar breaks.
Do not allow an operator to be on the machine that is being towed unless the operator can control the steering and/or the brakes.
Before you tow the machine, make sure that the tow line or the tow bar is in good condition. Make sure that the tow line or the tow bar has enough strength for the conditions that are involved. The strength of the tow line or of the tow bar should be at least 150 percent of the gross weight of the towing machine. This pertains to a disabled machine that is stuck in the mud and to towing a disabled machine on a grade.
When you tow the machine from the front, attach the tow line to the tow eyes on the frame (1). When you tow the machine from the rear, attach the tow line to the towing pin (2) .
Do not use a chain for pulling a disabled machine. A chain link can break. This may cause personal injury. Use a wire rope cable with ends that have loops or rings. Place an observer in a safe position in order to watch the pulling procedure. The observer can stop the procedure, if necessary. The procedure should be stopped if the cable starts to break. Also, stop the procedure if the cable starts to unravel. Stop pulling whenever the towing machine moves without moving the towed machine.
Keep the tow line angle to a minimum. Do not exceed a 30 degree angle from the straight ahead position.
Quick machine movement could overload the tow line or the tow bar. This could cause the tow line or the tow bar to break. Gradual, steady machine movement will be more effective.
Normally, the towing machine should be as large as the disabled machine. Make sure that the towing machine has enough brake capacity, enough weight, and enough power. The towing machine must be able to control both machines for the grade that is involved and for the distance that is involved.
You must provide sufficient control and sufficient braking when you are moving a disabled machine downhill. This may require a larger towing machine or additional machines that are connected to the rear of the disabled machine. This will prevent the machine from rolling away out of control.
All situation requirements cannot be listed. Minimal towing machine capacity is required on smooth, level surfaces. On inclines or on surfaces in poor condition, maximum towing machine capacity is required.
When any towed machine is loaded, this machine must be equipped with a brake system that is operable from the operator compartment.
Consult your AVSpare dealer for the equipment that is necessary for towing a disabled machine.
Towing with a Running Engine
If the engine is running, the machine can be towed for a short distance under certain conditions. The power train and the steering system must be operable. Tow the machine for a short distance only. For example, pull the machine out of mud or pull the machine to the side of the road.
The operator on the towed machine must steer the machine in the direction of the tow line.
Comply with all of the instructions that are outlined in this topic.
Towing with a Stopped Engine
When the disabled machine's engine is stopped, perform the following steps before you tow the machine.
- Reverse the hydraulic steering hose connections on one cylinder only.
- Remove the clamp (1) in order to allow free movement of the head end hose of the steering cylinder.
- Disconnect the hydraulic hose from the fitting on the head end of the steering cylinder (2) .
- Disconnect the hydraulic hose from the bottom fitting on the rod end of the steering cylinder (3) .
- Reconnect the rod end hose to the head end fitting and reconnect the head end hose to the bottom rod end fitting.
This will allow the steering cylinders to move freely.
- If failure of the internal transmission or of the drive line is suspected, remove the drive shafts.
Consult your AVSpare dealer or refer to the Service Manual for the removal procedures and for the installation procedures.
Be sure the cylinder hoses are connected correctly before operating the machine. With the hoses reversed, the steering system will not function.
- Release the parking brake.
When the drive shafts are removed, the machine has NO parking or secondary brakes. The machine can roll and cause personal injury or death.
Block the wheels securely so that the machine cannot move.
The towing connection must be rigid, or towing must be done by two machines of the same size or larger than the towed machine. Connect a machine on each end of towed machine.
- Inspect the machine for power train damage. Remove all four axle shafts if any damage is suspected.
Release the parking brake to prevent excessive wear and damage to the parking brake system, when towing the machine.
The procedure for manual release of the parking brake is outlined in the next topic, Parking Brake Manual Release.
- Fasten the tow bar to the disabled machine.
- Remove the wheel blocks. Tow the machine slowly. Do not exceed 2 km/h (1.2 mph).
Personal injury or death can result from a brake malfunction.
Be sure all necessary repairs and adjustments have been made before a machine that has been towed to a service area, is put back into operation.