SPINDLE 1786852 - Caterpillar

Component Maintenance
Perform an inspection on the following components:3-Pin Wiring Harness
Inspect harness for damaged wiring.
Inspect for secure connections at all ends of the harness.5-Pin Wiring Harness
Inspect harness for damaged wiring.
Inspect for secure connections at all ends of the harness.23-Pin Wiring Harness
Inspect harness for damaged wiring.
Inspect for secure connections at all ends of the harness.
Turn off power supply before unplugging or plugging in the 23-pin harness.Air Pressure Switch (three-way solenoid)
The air pressure switch is used to notify the ECM that the minimum 275 kPa (40 psi) air pressure is present.
Inspect for leaks.
Inspect for damaged wiring or faulty connections.
Replace if damaged or faulty.Boost Pressure Sensor
Inspect for damaged wiring to the boost sensor.
Inspect for damage of any tubing to the boost sensor.
Verify boost sensor reading with a vacuum gauge or CatET.
Replace if damaged or faulty.Dosing Control Cabinet
Inspect for damaged wiring or faulty connections.
Replace if damaged or faulty.
Inspect for DEF leaks
Inspect Sediment Strainer for contaminantsDifferential Pressure Sensor (back-pressure)
Inspect for damage wiring to the differential pressure sensor.
Inspect for damaged tubing and lines to the differential pressure sensor.
Verify differential pressure sensor reading using a manometer.
Replace if damaged or faulty.
Trend and document system back-pressure readings during operation to verify DPF/DOC maintenance interval effectiveness.
Do not exceed TMI/documented recommended back-pressure.