ADAPTER-SPLINE 1P0851 - Caterpillar

is a test of the machine with the engine and all accessories in the SHUT OFF position. The key start switch is in the ON position.In this Test Step, the 6V-2150 Starting/Charging Analyzer performs the following checks:
At the battery, the analyzer checks the open circuit voltage as an indication of the battery charge level.
At the alternator circuit breaker, the analyzer checks for an activated breaker.
At the key circuit breaker, the analyzer checks for an activated breaker.
At the key start switch, the analyzer checks if the START position of the switch is open.
If equipped, at the main relay, the analyzer checks for closed contacts. The analyzer also checks that the breaker is not activated.
The analyzer checks the position of the coolant switch. The switch should be CLOSED. While the engine is cooling down, switch closes at 27 °C (80 °F). While the engine is warming up, the switch opens at 38 °C (100 °F). Note: It is possible that the machine does NOT have components for starting aid.
The analyzer checks the starting aid switch. The switch should be OPEN. The coil for the starting aid solenoid should not be open. Note: For machines that have dual starting motors, Test steps 8 and 9 apply to both starting motors.The number 2 starting motor is always the attachment unless a dual starting system is standard equipment.
The analyzer checks the contacts of the start relay. The start relay should be OPEN.
The analyzer checks the starting solenoid. The contacts of the starting solenoid should be OPEN. Note: If all three of the lamps for the second starting motor are OFF, this may indicate that there is no second starting motor on the machine.