YOKE A. 1K8044 - Caterpillar

Backup Switch
Perform the following procedure if a decrease in performance occurs with no indication of one of the following conditions:
High hydraulic oil temperature
Low hydraulic oil temperature
High engine coolant temperatureAlso perform the following procedure if the machine functions do not respond according to the positions of the controls, switches, or buttons.Note: Make sure that you understand the functions of the controls, switches, or buttons before you use the backup procedure.
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Lift the cover under the right armrest in order to access the backup control switches. (1) Back up control switch (2) Engine speed control switchWhile the engine is running, lift the cover that is on the compartment on the right console. Move the backup control switch (1) to the right. This activates the backup system. The performance of the hydraulic system should decrease to economy mode. In order to change the engine speed manually, move the engine speed control switch (2).
Fast Engine Speed - Move the engine speed control switch (2) to this position in order to increase the engine speed. This backup switch will not operate if backup switch (1) is not in the MANUAL position. When the switch is released the switch returns to the NEUTRAL position and the machine will maintain the engine speed. This switch overrides the function of the engine speed dial.
Slow Engine Speed - Move engine speed control switch (2) to this position in order to decrease the engine speed. This backup switch will not operate if backup switch (1) is not in the MANUAL position. When the switch is released the switch returns to the NEUTRAL position and the machine will maintain the engine speed. This switch overrides the function of the engine speed dial. Machine Functions in Backup Mode
The following functions are fixed when the machine is in backup mode. The functions cannot be altered by changing the switch positions.
The monitor will shut off the indicators for temperature, fuel, and other items. The word "BACKUP" will be displayed on the screen.
The travel alarm will sound for 10 seconds when the machine begins to move. The alarm will shut off automatically after 10 seconds.
The work tool lockout will not be active.
The parking brake will be released.
The oscillating axle will not be locked unless the service brake pedal is fully depressed and locked, or if the left console is in the raised position.
The low gear is engaged.
The travel lock cannot be enabled.
Travel is always enabled. (This is true whether the service brake pedal is fully depressed and locked, or whether the left console is in the raised position.)
The engine can always be started. (This is true regardless of the position of the left console.)
Creeper speed is disabled.
The hydraulic system is set to Economy Mode.
The Automatic Engine Control is disabled.
The cooling fan will operate at maximum speed.Manual Backup
If the performance of the machine does not change, stop the engine. Raise the left console.
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Bodily injury can occur from unexpected contact with open cab doors on machines equipped with a fixed cab riser.To avoid injury,