BELT-SERPENTINE 4231361 - Caterpillar

Remove cap nuts (1). Turn valve cocks (2) counterclockwise for 1 1/2 turns (540 degrees).
Ensure that the "FUEL ON/OFF" switch is in the "OFF" position.
Turn the "PRELUBE/START"switch to the "PRELUBE" position. When the "PRELUBE" indicator illuminates, turn the "PRELUBE/START" switch to the "START" position to rotate the crankshaft for a few revolutions.
Inspect all the outlets of the cylinder pressure valves for indications of fluid.If fluid is found, do not continue the start-up. Inform the maintenance personnel. Record the cylinder number, the engine serial number, and the service hours.If no signs of fluid discharge are found, ensure that all the cylinder pressure valves and the cap nuts are clean. Tighten valve cocks (2) to 24 3 N m (18 2 lb ft). Install cap nuts (2) and tighten to 17 3 N m (13 2 lb ft).
Ensure that the driven equipment is disengaged.Note: Two typical control panels are illustrated. If the engine is equipped with a different control panel, follow the instructions that are provided by the OEM of the control panel.
Illustration 3 g03404144
(1) "ENGINE CONTROL" switch
Illustration 4 g03404149
(2) "LOCAL THROTTLE" switch
(3) "STARTING MOTOR" switch
(4) "CRANK OVERRIDE" switch
(5) "RUN/STOP" switch
(6) "LOW IDLE" switch
(7) "ENGINE PROTECTION OVERRIDE" switch
(8) "RAPID START/STOP" switch
(9) "MANUAL PRELUBE" switch
(10) "OIL MIST OVERRIDE" switch
Turn "OFF/RESET, LOCAL, and REMOTE" switch (1) to the "LOCAL" position.
The engine must be prelubed before the crankshaft is rotated. Damage can result if the crankshaft is rotated on dry bearing surfaces.
Turn "MANUAL PRELUBE" switch (9) to the "ON (I)" position. Allow the prelube pump to operate. When the prelube indicator illuminates, the engine has sufficient prelube to start.
Illustration 5 g00275016
Fuel priming pump
Turn the handle of the fuel priming pump clockwise to prime the fuel system. Turn the handle until a resistance to the fuel flow is felt. If the engine is equipped with an electric fuel priming pump, activate the electric fuel priming pump. Operate the electric fuel priming pump until fuel pressure is indicated on the fuel pressure gauge.
Immediately after engine start-up, ensure that oil pressure and fuel pressure are indicated on the gauges. Allow the engine to idle for 3 to 5 minutes. The engine speed should stabilize at low idle rpm. Check all the pressure gauges. Inspect the engine for leaks and listen for unusual noises. When all systems are normal, the rpm may be increased.Ensure that the oil pressure and the fuel pressure are in the normal ranges. After the engine has started and the warmup is complete, the engine can be operated at low rpm and low load. The engine will reach normal operating temperature faster if the engine is operated at low rpm and with a low-power demand. This procedure is more effective than idling the engine with no load. The engine should reach normal operating temperature in a few minutes.Starting the Engine After an Overhaul or Major Repair
Use the following guidelines for operation and maintenance after an overhaul or a major repair. This procedure will ensure that the engine is functioning correctly. The procedure