EDGE 1193957 - Caterpillar

Specification
For the 303.5E, 304E, 305E, and 305.5E, refer to Testing and Adjusting, "Engine Performance - Test - Engine Speed" in the Hydraulic System manual for the low idle and high idle specifications.For the 901C, 902C, and 903C, refer to Testing and Adjusting, "Hydrostatic System - Test and Adjust" in the Power Train manual for the low idle and high idle specifications.Required Tools
Table 1
Required Tools
Part Number Description Qty
1U-6602 Photo-Tachometer 1 Engine Preparation
Ensure that the engine is level.
Stop the engine.
Install a piece of reflective tape on the fan or a pulley on the engine. Test Procedure
Start the engine.
Increase the hydraulic oil temperature to 55° 5°C (131° 9°F).
Read the engine speed display (rpm) on the photo-tachometer. Refer to "Specification" for the specifications for engine speed at the desired engine operation.