VALVE GP-COMBINATION 1734032 - Caterpillar

Introduction
Do not perform any procedure in this Special Instruction until you read this information and you understand this information.This Special Instruction provides a procedure for inspecting the engine after a system generated shutdown.The cause of a system generated shutdown must be corrected prior to an engine restart. Severe engine damage may occur if the problem is not corrected. In some cases, the cause of the shutdown may be obvious and easily corrected. Other times, a visual inspection may not reveal the root cause of the shutdown. The engine must be started in order to determine the root cause.The time that is required for the start-up procedure is approximately 1 hour and 45 minutes. It is important to determine the root cause of a system generated shutdown in order to avoid engine damage. This procedure is a method for an engine restart when the root cause of the system generated shutdown cannot be determined by visual inspection alone.Note: If the engine is shutdown by the oil mist detector, refer to the engine's Operation and Maintenance Manual.The following conditions can cause a system generated shutdown.
High aftercooler and oil cooler water temperature (inlet)
High jacket water coolant temperature (outlet)
High fuel temperature (inlet)
High inlet manifold air temperature
High crankcase pressure
High engine oil temperature
Low engine oil pressure
High engine oil filter differential pressure
Presence of metal particles in the oil lines
OverspeedIf the engine must be restarted, perform the following start-up procedure.Start-up Procedure
Inspect the condition and the level of all fluids. Correct any problem with the fluids.
Ensure that the engine is off-line or that the gearbox is in neutral.
Open all manual valves (kiene valves). Use the barring device in order to turn the engine. The open valves will indicate if there is any fluid buildup in the combustion chambers.
Start the prelube system and put the fuel switch in the OFF position. Rotate the crankshaft with the barring device for a minimum of four revolutions.
Disengage the barring device.
Close all manual valves (kiene valves).
Start the engine and allow the engine to idle at approximately 350 RPM. Do not take the engine to high idle at this time. Monitor the temperatures and pressures. Prepare to perform