Air Shutoff - Test
Show/hide table
| |
| Illustration 1 | g06103690 |
|
(1) OPEN position
(2) CLOSED position (3) Manual release | |
Air shutoff valves must be tested and inspected to ensure proper operation.
Inspect the air shutoff for damage of the following components that could prevent operation: housing, manual release knob, oil supply line, and switches. After inspecting the air shutoff, use Cat Electronic Technician (ET) to trip the shutoff to ensure that the shutoff functions properly.
- Start the engine and run at low idle.
c
- Use Cat ET to override the parameters for the air shutoff and trip the air shutoff. Cat ET is the preferred method. If Cat ET is not available, the use of the emergency stop button is acceptable.
- Inspect the air shutoff to ensure that the air shutoff has been tripped. The indicator on the air shutoff should point downward to the closed position. If the shutoff did not trip, see the Troubleshooting Guide.
Note: Not to be used with butterfly valves.
- Use a 1 inch wrench to reset the air shutoff by turning the operating shaft 180 degrees in the clockwise direction. Ensure that the arrow is pointing up to the open position.
- Repeat Steps 1 through 4for a total of two successful tests.
Note: Testing is only complete when the engine successfully passes all the steps. Reset the air shutoff valve to the open position and clean up any spills that may have occurred.
Caterpillar Information System:
C4.4 and C6.6 Engines Sensor Supply - Test
SPF343 and SPF343C Trailer Mounted Pumpers Product Lifting
C4.4 and C6.6 Engines Sensor Signal (Analog, Passive) - Test
Water Pump on Certain C4.4, C6.6, and C7.1 Engines {1361} Water Pump on Certain C4.4, C6.6, and C7.1 Engines {1361}
C4.4 and C6.6 Engines Sensor Signal (Analog, Active) - Test
C4.4 and C6.6 Engines Sensor Calibration Required - Test
C4.4 and C6.6 Engines Relay - Test - Start Relay
HPU300 Hydraulic Power Pack Wheel - Inspect
The 258-1543 Magnetic Switch Gp (DEF Heater Relay) May Leak AC Voltage to the Relay Case when Energized {1091, 7499} The 258-1543 Magnetic Switch Gp (DEF Heater Relay) May Leak AC Voltage to the Relay Case when Energized {1091, 7499}
G3512 Generator Set Engines Event Codes
C4.4 and C6.6 Engines Power Take-Off - Test
Improvements for SCR Inlet Temperature Sensor Wiring Routing on Certain C9.3 Engines {1906, 1921, 1922, 1928, 1929, 3290, 7344} Improvements for SCR Inlet Temperature Sensor Wiring Routing on Certain C9.3 Engines {1906, 1921, 1922, 1928, 1929, 3290, 7344}
SPF343 and SPF343C Trailer Mounted Pumpers Fuel System - Prime
C7.1 Marine Engine Gear Group (Front) - Install
DE Series Generator Set with Cat C1.1, C1.5, and C2.2 Engines Additional Messages
Changes to the Way Serial Numbers are Displayed on Service Magazines {0374, 1000, 7000} Changes to the Way Serial Numbers are Displayed on Service Magazines {0374, 1000, 7000}
DE Series Generator Set with Cat C1.1, C1.5, and C2.2 Engines Model View Illustrations
SPF343 and SPF343C Trailer Mounted Pumpers Belts - Inspect/Adjust/Replace
C175 Tier 4 Final Engines for Off-Highway Trucks Sensor Signal (Analog, Active) - Test
A New Inlet Manifold Air Temperature (IMAT) Switch Is Now Used on Certain G3412 Generator Set Engines {7400, 7418} A New Inlet Manifold Air Temperature (IMAT) Switch Is Now Used on Certain G3412 Generator Set Engines {7400, 7418}
The Hump Hose is Missing on the Air Cleaner Group on Certain G3516H Engines {1051} The Hump Hose is Missing on the Air Cleaner Group on Certain G3516H Engines {1051}
A New Oil Filter Base Stud Is Now Used on Certain 3500 Engines {1306, 1308} A New Oil Filter Base Stud Is Now Used on Certain 3500 Engines {1306, 1308}
PM820, PM822, and PM825 Cold Planer Machine Systems Hydraulic Cylinder (Front Toe) - Remove and Install
C4.4 and C6.6 Engines Shutdown (Ground Level) - Test