ELBOW 4V2421 - Caterpillar

Safety Precautions
Keep hands clear of fan and belts while engine is running.
Do not operate or work on this engine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manual. Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Caterpillar dealer for replacement manuals. Proper care is your responsibility.
Do not crank the engine for more than 30 seconds. Allow the electric starting motor to cool for 2 minutes before cranking again.
Specifications
N/AIntroduction
Check the engine rpm, which is displayed on the status screen of Cat ET.Required Tools
Illustration 1 g02167834
Tool (A)
Table 1
Tool Items Qty Part No Description
A A1-A11 1 348-5430 Multi-Tool Gp
Table 2
Sensor and Cable Groups Used with Multi-Tool
285-0897 Engine Timing Pickup Group
Item Qty Part Number Description
A1 1 5P-7362 Cable Assembly - Signal TDC
A2 1 6V-2197 Transducer - Magnetic TDC Pickup 114 mm (4.5 inch) Long
A3 1 6V-2199 Adapter - Transducer, 1/8 inch NPTF
A4 1 6V-3093 Adapter - Transducer, 1/4 inch NPTF
A5 1 8T-5184 Transducer - Magnetic TDC Pickup 8.9 cm (3.5 inch) Long
A6 1 8T-5185 Transducer - Magnetic 17.8 cm (7.0 inch) Long
Table 3
8T-5301 Diesel Engine Timing Adapter Group
Item Qty Part Number Description
A7 1 5P-7435 Tee Adapter Gp
A8 1 5P-7436 Adapter
A9 1 5P-7437 Adapter
A10 1 6V-2198 Cable As
A11 1 6V-3016 Washer Note: Caterpillar Electronic Technician (ET) can also be used to check the engine "RPM".Check Preparation
Remove the pertinent covers to expose the magnetic pickup that is located in the flywheel housing.Check Procedure
The 348-5430 Multi-Tool Gp can measure engine rpm from a magnetic pickup. This magnetic pickup is located in the flywheel housing. Refer to Tool Operating Manual, NEHS1087 for the testing procedure.The 348-5430 Multi-Tool Gp is also a photo-tachometer that is held by hand for general use. The multi-tool can measure the engine speed by placing a piece of reflective tape on the crankshaft pulley. Refer to Tool Operating Manual, NEHS1087 for the testing procedure.Note: The measurement of engine rpm can be set with the Cat ET. Refer to the Troubleshooting manual.