TM 9-6115-668-13 Table  2-4  Operator  Preventive  Maintenance  Checks  and  Services-continued. Item No. 33 34 35 36 37 38 39 40 41 42 2 - 2 6 Interval Before Before Before Before Before Before Before Before Before Before Location Item to Check/Service ENGINE   COMPARTMENT- continued Oil hoses Plastic lever Ground strap Control   cable Connector X103 Connector X106 Cable,    glowplug Cable, temperature switch (burner   monitor) Cable, temperature switch (overtemperature) Switches, temperature (oil) Procedure Check that both oil hoses are firmly attached to diesel engine oil sump with no leaks. Check that plastic lever on heating unit terminal box is all the way to the left, and is caged. Inspect ground strap and ground strap connections to heating unit and base  frame. Check that control cable is firmly con- nected to connector on terminal box, and is not damaged. Check labeling of  J102. Check that connector X103 is prop- erly  assembled  and  not  damaged. Check  labeling  of  X103. Check that connector X106 is bridged. Check labeling of X106. Check that cable is firmly connected to glowplug and is undamaged. Check  labeling  of  X108. Check that cable is firmly attached to temperature switch (burner monitor) and is undamaged. Check labeling of X109. Check that cable is firmly attached to temperature   switch   (over-temperature) and is undamaged. Check labeling of X110. Check that cable is firmly attached to temperature switch (oil) and is un- damaged. Check labeling of X104. Not Fully Mission Capable   if: Oil hoses are loose or damaged. Plastic lever is not all the way to the left. Ground strap is loose or   damaged. Control cable is loose or   damaged. Connector is loose or damaged. Jumper is missing. Cable is loose or damaged. Cable is loose or damaged. Cable is loose or damaged. Cable is loose or damaged.