Alarms and Shutoffs
Alarms and shutoffs are electronically controlled. The operation of all alarms and shutoffs utilize components which are actuated by a sensing unit. The alarms and shutoffs are set at critical operating temperatures, pressures, or speeds in order to protect the engine from damage.
The alarms function in order to warn the operator when an abnormal operating condition occurs. The shutoffs function in order to shut down the engine when a more critical abnormal operating condition occurs. The shutoffs help to prevent damage to the equipment.
If an engine protective device shuts off the engine, always determine the cause of the shutoff. Make the necessary repairs before attempting to start the engine.
Become familiar with the following information:
- Types of the alarm and shutoff controls
- Locations of the alarm and shutoff controls
- Conditions which cause each control to function
- Resetting procedure that is required before starting the engine
Caterpillar Information System:
C27 Petroleum Engine Engine Oil Pump - Disassemble
CX28 On-Highway Transmission Breather (Transmission) - Clean
3512B and 3512C Petroleum Generator Set Engines Customer Specified Parameters Worksheet
CG137-08 and CG137-12 Industrial Engines System Configuration Parameters
3516B Marine Auxiliary Engine Configuration Parameters
C15 and C18 Engines Fuel System Secondary Filter - Replace
C27 and C32 Engines Engine Oil Cooler - Remove and Install
3516B Marine Auxiliary Engine Sensor Supply - Test
CG137-08 and CG137-12 Industrial Engines Spark Plug
3516B Marine Auxiliary Engine Secondary ECM - Test
3516B Marine Auxiliary Engine ECM/Personality Module - Test
C27 and C32 Tier 4 Engines Fan Adapter Fastener
C27 Petroleum Engine Engine Oil Pump - Assemble
C7.1 Industrial Engine Turbocharger - Install - Second Stage Turbocharger
Enabling Either of Two Programmable Monitoring Parameters Causes a Loss of Communication for the Electronic Control Module (ECM) on C175-16 Generator Set Engines{1901, 1920} Enabling Either of Two Programmable Monitoring Parameters Causes a Loss of Communication for the Electronic Control Module (ECM) on C175-16 Generator Set Engines{1901, 1920}
C27 and C32 Engines Flywheel Housing - Remove and Install
312E, 312F, 313F, 316E, 316F, 318E, 318F, 320E, 320F, 323E, 323F, 324E, 325F, 326F, 329E, 329F, 330F, 335F, 336E, 336F, 340F, 349E, 349F, 352F, 374F and 390F Excavators and 336E MHPU and 349E MHPU Mobile Hydraulic Power Units Air Conditioning and Hea Required Tools
312E, 312F, 313F, 316E, 316F, 318E, 318F, 320E, 320F, 323E, 323F, 324E, 325F, 326F, 329E, 329F, 330F, 335F, 336E, 336F, 340F, 349E, 349F, 352F, 374F and 390F Excavators and 336E MHPU and 349E MHPU Mobile Hydraulic Power Units Air Conditioning and Hea Refrigerant Recovery
UPSB220 Uninterruptible Power Supply Display Messages
312E, 312F, 313F, 316E, 316F, 318E, 318F, 320E, 320F, 323E, 323F, 324E, 325F, 326F, 329E, 329F, 330F, 335F, 336E, 336F, 340F, 349E, 349F, 352F, 374F and 390F Excavators and 336E MHPU and 349E MHPU Mobile Hydraulic Power Units Air Conditioning and Hea Manifold Gauge Set (Refrigerant) - Install
312E, 312F, 313F, 316E, 316F, 318E, 318F, 320E, 320F, 323E, 323F, 324E, 325F, 326F, 329E, 329F, 330F, 335F, 336E, 336F, 340F, 349E, 349F, 352F, 374F and 390F Excavators and 336E MHPU and 349E MHPU Mobile Hydraulic Power Units Air Conditioning and Hea Refrigerant System - Evacuate
Conventional (Dry) Welding Procedure for Rollers and Idlers {0679, 4150, 4159, 4180, 7950} Conventional (Dry) Welding Procedure for Rollers and Idlers {0679, 4150, 4159, 4180, 7950}
C7.1 Industrial Engine Turbocharger - Install - First Stage Turbocharger
CG137-08 and CG137-12 Industrial Engines Carburetor