PUMP GP-MAIN HYDRAULIC 3699676 - Caterpillar

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Illustration 78 g01176955Throttle Control
Note: Using the throttle pin for throttle control is an option when Cat ET is not available for speed override.For 9 - pin connectors (Illustration 65), the throttle input is pin h.For A4 (2 70 pin connectors) and A4 (1 70 pin connector, 1 120 pin connector) ECMs the throttle pin input is J1-66.For A2 ECMs (2 40 Pin connector), the throttle input is pin 37.For most the time, the throttle inputs are not used in the hot test cells. The test cells instead use the engine software's desired engine speed override (ComET UID 0x00040020).Appendix J: CRS Test Procedure
Required added functionality test for engines with engine-mounted Caterpillar Regeneration System (CRS):The CRS test is broken into two sections. Section one is to provide verification that the air line, fuel lines, and control valves are functioning and free from major leaks. Section two is a functional test to ensure that the CRS performs as specified by Engineering.CRS Test - Section 1
Section one CRS leak check definition is as follows:
Collect a base line from the engine electronics (ECM) for the CRS Air Flow, CRS Pilot Pressure, and CRS Main Pressure with all control valves closed.
Override the CRS Air Control Valve to a constant value and measure the CRS Air Flow to ensure that it climbs above the base line.
Reclose the Air Control Valve and verify the air flow returns to the baseline value.
Open only the CRS Fuel Enable Control Valve and verify that the CRS Pilot and Main Pressures do not increase to check for leaks past the CRS Pilot and Main Valves.
Reclose the CRS Fuel Enable Control Valve.
Open only the CRS Fuel Pressure Control Valve (Pilot and Main) and verify that the Pilot and Main pressures do not increase to check for leaks past the CRS Fuel Enable Control Valve.
Reclose the CRS Fuel Pressure Control Valve.If any of the above fail to perform as described, section one is considered failed, and will not allow the CRS performance check to be run. In addition, if BOTH Fuel Valves fail each independent leak check that the engine will be shut down.CRS Test - Section 2
CRS Performance check definition is as follows:
Set the engine to defined load/speed point as defined for the model being tested (split is between Heavy Duty and Mid Range).
Override the CRS System to perform regeneration.
Wait for the CRS Flame Detect Temperature and CRS Main Pressure to reach their low limits, then wait an additional 15 seconds for stability to be reached.
The Performance check will be aborted after 90 seconds if CRS Flame Detect Temperature or CRS Main Pressure do not reach their low limits.
For heavy-duty applications the CRS Air Purge Pump, if applicable, will always be activated at the end of this check. This pump will be verified by monitoring the CRS Pilot and Main Pressures during the Nozzle only function with the pump in High-Speed mode.
The following data is collected as pass/fail criteria as part of