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BOSS ® DIAGNOSTIC TOOL Procedure The tool listed will be needed to do the following MEL1400 – Diagnostic Tool Stop the engine. Lift and block the loader. (See Page 1–1.) Remove the dust cap from the diagnostic connector plug. Connect the diagnostic tool plug (Item 1) [A] into the loader connector. Use the instructions from the BOSS Operation & Maintenance Manual to make service checks of BOSS system operating unit and other components [A]. SENDER AND SENSOR Service Checks Use the following information when checking the senders and sensor with a volt/ohmmeter: Component Value TEMPERATURE SENDER 970 ohms . . . . . . . . . . . . . 80 degree F. (27 degree C.) 1013 ohms . . . . . . . . . . . . ENGINE OIL PRESSURE SENDER 0 PSI 3 ohms Max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PSI (41 kPa) 7 ohms Min. . . . . . . . . . . . . . . . . . . . . . . . 50 PSI (345 kPa) 49 ohms . . . . . . . . . . . . . . . . . . . . . . . . 70 PSI (483 kPa) 59 ohms . . . . . . . . . . . . . . . . . . . . . . . . TRANSMISSION CHARGE PRESSURE SENDER 0–5 ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 PSI (690 kPa) 58 ohms . . . . . . . . . . . . . . . . . . . . . . . 130 PSI (896 kPa) 75 ohms . . . . . . . . . . . . . . . . . . . . . . . 150 PSI (1034 kPa) 87 ohms . . . . . . . . . . . . . . . . . . . . . FUEL SENDER Full 30 ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Empty 270 ohms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NOTE: Early S/N loaders have the diagnostic plug located at rear window as shown in Fig. [B]. A P–03871 1 853,853H Loader –8–3– Service Manual B CD–09025 |