AIR COMPRESSOR GP 1W6473 - Caterpillar

Excessive ether (starting fluid) can cause piston and ring damage. Use ether for cold weather starting purposes only.
Ether can be automatically injected during cranking by the Electronic Control Module (ECM).A switch input may be provided to allow the operator to inject ether manually.Note: To determine whether your equipment has a manual ether switch, refer to the Operation and Maintenance Manual, "Operation Section".The switch input (if equipped) enables the operator to inject ether manually under the following conditions:
The ether control parameter is programmed to "ON".
The momentary contact switch for the ether injection is activated.
The engine speed is more than 75 rpm.
The jacket water coolant temperature is less than 30 °C (86 °F).The ECM automatically injects ether into the air inlet manifold when the following conditions are met:
The ether control parameter is programmed to "ON".
The engine rpm is between 75 and 400 rpm.
The jacket water coolant temperature is below 30 °C (86 °F).The duration of ether injection varies linearly with the jacket water coolant temperature. The duration of ether injection varies within the following range:
10 seconds at the maximum temperature of 30 °C (86 °F)
130 seconds at the minimum temperature of -40 °C (-40 °F)The longest duration of ether injection is 130 seconds even if the jacket water coolant temperature is less than -40 °C (-40 °F). Refer to Illustration 1.
Illustration 1 g00769594
Temperature of the jacket water and duration of ether injection (Y) Temperature in °C (X) Time in secondsFor troubleshooting, an override is available for the technician to actuate the ether system. By using Caterpillar Electronic Technician (ET), ether injection can be started and stopped. The ether solenoid will remain energized until any of the following conditions occur:
Engine speed appears.
The override for the service tool is used to terminate injection.
The technician exits the override feature of the service tool.