ROD A 3S5697 - Caterpillar

Illustration 13 g00570287
Wastegate (16) Plug (17) Nut (18) Setscrew
Turn setscrew (18) for the wastegate in order to obtain an 80 percent open throttle at full load. If necessary, readjust the main adjustment screw and the wastegate several times in order to obtain the correct throttle angle at full load and the correct NOx level.
Stop the engine and start the engine several times. If the engine is difficult to start, repeat this procedure starting with Step 7.
Operate the engine throughout the expected load range. Verify that the engine rpm is stable. Verify that the throttle angle at full load and the NOx level are correct. If the engine rpm is unstable, readjust the settings of the governor, if necessary.Cooling System
Jacket Water Heater
Reduced life and failure of jacket water heaters can normally be traced to incorrect installation or to incorrect electrical hookups. The following conditions are the major problem areas.Hose Installation
The installation or routing of hoses is most often the cause of jacket water heater problems. The hose routing can be incorrect due to original installation, movement of hoses during repair, or rerouting of hoses around other equipment. Illustrations 14 and 15 show examples of hose routing.
Illustration 14 g01048108
Illustration 15 g01048109
The hoses for the jacket water heater must slant upward from the heater connection to the engine connection. This is especially important on the heater outlet hose. Any loop or high point in the water outlet hose can result in a steam pocket that will stop all coolant circulation.Failure of the Thermostat
Poor coolant circulation, incorrect voltage, and poor electrical connections are all potential problem areas that can shorten thermostat life. Poor coolant circulation can be caused by incorrect hose installation or a restriction in one of the hoses. Poor coolant circulation will cause the thermostat to cycle rapidly. The life of the thermostat will be reduced if the thermostat cycles two or more times in 15 minutes. A voltage of more than 20 percent above the rated voltage will shorten the service life of the thermostat and of the heater element. Make sure that 120 volt jacket