ELBOW 2177073 - Caterpillar

Quick Coupler Control (20)
LOCK - Move the switch to this position to engage the quick coupler onto the work tool.
UNLOCKED - Move the switch to this position to disengage the coupler from the work tool.Note: An alarm will sound whenever the switch is in the UNLOCKED position.For further details, see Operation and Maintenance Manual, "Quick Coupler Operation".Lower Window Wiper and Window Washer (21-22)
Lower Window Wiper (21) - Push down on the top of the switch to turn on the lower window wiper. Push down the bottom portion of the switch to turn off the lower window wiper.
Lower Window Washer (22) - Push down on the top of the switch and keep the switch depressed to activate the lower window washer. While the switch is depressed, the washer fluid will spray from the nozzle.
If the wiper does not operate with the switch in the ON position, turn the switch off immediately. Check the cause. If the switch remains on, motor failure can result.
If the washer is used continuously for more than 20 seconds or used when no washer solution comes out, motor failure can result.
Seat Heater (23)
Preexisting skin conditions can be aggravated by continued use of the seat heater. If skin condition worsens, discontinue use of the seat heater.
Seat Heater - In cold weather, the seat heater can be activated to improve operator comfort.
ON - Push down on the top of the seat heater switch to activate the seat heater.
OFF - Push down on the bottom of the seat heater switch to deactivate the seat heater.
Do not leave any heavy item or object with a sharp point on the seat.Do not cover the seat or seat back with a blanket, seat cushion or any other similar covering. The seat heater can be over heated. Be sure to remove any spills on the seat and thoroughly dry the spill.
Note: The thermostat in the seat heater deactivates when the temperature in the cab is above 10°C (50°F). The seat heater will not operate when the thermostat is deactivated.Fine Swing Control (24) (If Equipped)
The Fine Swing Control delays the engagement of the swing parking brake.If the machine is operating on a slope with the Fine Swing Control in the ON position, the swing motion may become uncontrollable which could result in property damage, personal injury or death.Turn the Fine Swing Control to the OFF position when the machine is operating on a slope.
Fine Swing Control - Push down on the top of the switch to activate the fine swing control. Fine swing improves swing control during deceleration of a swing.Push down on the bottom of the switch to turn off the fine swing control. Operate the machine with the switch in the OFF position when great swing forces are required. For example, digging on a sidewall requires great swing force. Operate the machine with the switch in the OFF position to control the motion with the swing brake.Service Port
Illustration 14 g03320855
Electronic Technician service port
An Electronic Technician (ET) service port is located inside the