BEARING AS 0938828 - Caterpillar

All Caterpillar Turbocharged Diesel Engines And Turbocharged Or Naturally Aspirated Natural Gas EnginesThe 4S6553 Engine Evaluation Test Group can be used to analyze the engine performance of the above engines. It can also be used to make operating adjustments to natural gas engines. The performance evaluation assumes that if the engine is in good condition and all adjustments are correct, then the manifold pressure is a function of the power being developed. Engine Evaluation Test Group Components
1. 1P7443 Tachometer2. Tachometer Forward-Reverse Switch3. Tachometer Input4. Continuity Indicator5. Continuity Input6. 4S6997 Manifold Pressure Gauge7. Manifold Pressure Inputs8. 5P6579 Differential Pressure Gauge9. 5P6579 Differential Pressure Gauge10. Differential Pressure Inputs11. 1P7447 Pressure Gauge12. Psi Input13. 1P7444 Tachometer Generator14. 1P7445 Electric Tachometer Cable15. 1P7448 Mechanical Tachometer Cable16. 5P2948 Fittings17. 2A4716 Dust Caps18. 4K9822 Nuts19. 4K9821 Sleeves20. 1P7446 Rack Terminal Cable21. 4S8381 Tube (50 ft - order by the foot)22. 5P9693 Cable Ties23. 3K6675 Fittings24. Storage Container for FittingsTachometer
The 1P7443 Tachometer is a direct reading tachometer with a range of 0 - 4500 RPM. The tachometer scale indicates 1000 RPM for each revolution of its pointer, and multiples of 1000 RPM are shown in the window on the left of the dial face. The instrument is calibrated with a tachometer generator which produces a voltage relative to one-half engine speed. Tachometer accuracy in the following ranges is: 25 RPM @ 0 - 1200 RPM, 15 RPM @ 1200 - 2300 RPM, 25 RPM @ 2300 - 3000 RPM, and 40 RPM @ 3000 - 3500 RPM.The 7M6001 Tachometer Drive Adapter Group used on some 4.0" and 4.5" bore engines and some special tachometer drives runs at engine speed. On engines with this adapter group, the 5S6106 Adapter must be connected to the tachometer drive, and the tachometer generator connected to the adapter. This will reduce the generator speed to one-half engine speed and will prevent overspeeding of the tachometer.The 5S6106 Adapter and other tachometer adapters are shown in the TOOL GUIDE. A 5L2277 Tee Adapter can be used to check the accuracy of the machine tachometer against the 1P7443 Tachometer by allowing both tachometers to run at the same time. The outputs at the ends of the tee turn in opposite directions; therefore, a tachometer forward-reverse switch is used to accept either clockwise or counterclockwise rotation.Pressure Gauge
The 1P7447 Gauge is used to check the fuel delivery pressure on natural gas and diesel engines. This gauge has a range of 0 - 100 psi and an accuracy of 2 psi. If a different pressure range gauge is needed for special applications, use one of the gauges in the 5P6225 Hydraulic Test Box.Continuity Indicator
The continuity indicator is used to indicate governor balance point on engines equipped with a brass screw terminal on the governor housing. One lead of the rack terminal cable is clipped to this terminal, and the other lead is clipped to ground. When the rack stop collar just touches the torque spring, the light just barely comes on