SLEEVE-RETAINER 6P4717 - Caterpillar

Electric Power GenerationC175-16 GEN SET (S/N: WYB1-UP)EngineC175-16 (S/N: P6L1-UP)Introduction
Do not perform any procedure in this Special Instruction until you read and understand the information.Perform the following procedures to determine if cooling system design is hampering cooling pump efficiency enough to cause aeration. If a minimum coolant pump differential pressure is not achieved, cavitation will develop. Cavitation can cause overheating throughout the operating range of the engine. Cavitation can also severely damage cooling system components. Once cavitation begins, erosion of components causes a continuous degradation of the cooling system efficiency. As cooling system efficiency decreases, cavitation and erosion escalates causing engine overheating and component failure.The following procedure provides the information necessary to test the jacket water cooling system and the Separate Circuit Aftercooler (SCAC) system.First, the procedure will be used to evaluate the jacket water cooling system for cavitation. During this test, the temperature sensor for the water pump outlet will be rewired to the Electronic Control Module (ECM) for temperature monitoring purposes. After you test the jacket water cooling system, the original wiring will be restored and the SCAC will be tested using the same procedure. You may want to make a separate copy of the log and graph sheet and the data tables for each of the cooling systems.The first section of this procedure defines engine and cooling system pre-checks and setup of the required instrumentation.The second section provides information necessary to warm the engine correctly prior to measuring the operating conditions of the cooling system. In this section, you will heat the engine throughout the temperature range of the system and record the necessary data.The next section provides instruction for the necessary calculations and analysis of the test results.The final section provides some possible causes of cooling system problems
Table 1
Tools Needed
Qty. Part Number Part Name
1 230-4011 Connector Plug As
2 8T-0862 Pressure Gauge (-100 TO 500-KPA (-15 TO 72-PSI))
2 5C-7617 Reducing Bushing
Method for reducing air flow through the radiator core to increase cooling system temperature Note: For valid test results to be obtained, mechanical pressure gauges with similar accuracy of the gauge listed above must be used. Also, the gauges must be installed in the ports as instructed in the procedure below.Prepare the Jacket Water Cooling System for Testing
Perform the following steps to prepare the engine for testing:
Illustration 1 g02727287
Motor cover for the electronic thermostat
(1) Shaft extension
(2) 12-pin harness connector
In order to block the thermostat passage to the engine, disconnect 12-pin harness connector (2) at the Temperature Control Module (TCM). Removing power from the TCM will allow for manual control of the electronic thermostat during the test. Use shaft extension (1) to position the piston manually at the end-stop in order to close the thermostat. Turn the shaft in the counterclockwise direction.
Ensure that the cooling system is filled with coolant.
Ensure that the engine can be controlled at the rated speed for an extended period.
Equip the radiator with a vented radiator cap that has a vent line. The line must be long enough to