TM 10-4320-307-24Chapter 4GENERAL SUPPORT MAINTENANCE INSTRUCTIONSINTRODUCTIONThis chapter contains the following frequently used maintenance information:a.Troubleshootingb.Maintenance proceduresThe symptom index on page 4-1 is a guide to the troubleshooting information. There is also an index to the maintenanceprocedures on page 4-3.SectionTitlePageSection ITroubleshooting ...............................................................................................................4-1Section IIMaintenance Procedures..................................................................................................4-3Section I. TROUBLESHOOTING4-1TROUBLESHOOTING .a.Table 4-1 contains troubleshooting information for locating and correcting most of the operating troubles which arethe responsibility of general support maintenance. Each malfunction for an individual component, unit, or systemis followed by a list of tests or inspections which will help you to determine probable causes and corrective actionsto take. Perform the tests/inspections and corrective actions in the order listed.b. This manual cannot list all malfunctions that may occur, nor all tests or inspections or corrective actions. If amalfunction is not listed or cannot be corrected by listed corrective actions, notify your supervisor.c. Only those functions within the scope of general support maintenance are listed. For troubleshooting procedureswithin the scope of operator/crew maintenance, refer to TM 10-4320-307-10. For troubleshooting procedures withinthe scope of unit maintenance, refer to Table 2-2. For troubleshooting procedures within the scope of directsupport maintenance, refer to Table 3-1.4-2SYMPTOMINDEX . Refer to the symptom index below. Locate the malfunction which is the same, or most nearlythe same, as the trouble you are having with the centrifugal pump unit. The Symptom Index lists the first page oftroubleshooting information for that malfunction. Follow the steps one by one, and perform the corrective actions listed.MalfunctionNumberDescriptionPage1234Engine is hard to startEngine consumes excessive lube oil (may produce blue smoke)Engine produces excessive crankcase pressureEngine has low oil pressure4-24-24-24-24-1
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