To reduce engine cranking time, prime the fuel pump. NOTE: If the fuel pump is dirty, clean the outside of the pump near the filter…

Caution: The lubricating oil system must be primed before operating the engine after any internal engine repairs or extended engine storage (beyond 6 months) to…

When testing a CELECTTM engine on an engine dynamometer, it is necessary to attach a throttle input control, and a 12 volt power supply to…

Use digital optical tachometer, Part No. 3377462, to check and verify engine speed. Fuel Pressure Measure the fuel pressure. Install the pressure gauge, Part No.…

Measure the fuel inlet restriction. Install a vacuum gauge, Part No. ST-434, between the fuel pump inlet and the gear pump inlet. NOTE: Do not…

The Part No. 3376375, Fuel Measuring instrument, is used during the performance check to measure fuel consumption. Install the fuel measuring device as follows: •…

Install the coolant pressure sensor (1). Install the coolant temperature sensor (2). Connect the coolant supply to the water inlet connection. Connect the coolant return…

Cummins 1991 N14 Heavy Duty Engine Operating Curve Definitions: 1. Peak Torque (N•m [ft-lb]) – Maximum torque that the engine will produce. Also, sometimes referred…

Cleaning Warning: When using a steam cleaner, wear protective clothing and safety glasses or a face shield. Hot steam can cause serious personal injury. Use…

Use solvent to clean the adjusting link. Dry with compressed air. NOTE: Some parts can vary in design. Visually inspect the adjusting link for cracks…