TM-9-2320-365-20-1 LMTV Unit Maintenance Manual M1078 Series - Volume 1 Download
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WARNING CAUTION NOTE Inspect connector pins/sockets for damage, corrosion, and serviceability. Check that connector pins are not pushed back and are capable of making good contact. Use care when testing electrical connectors. Do not damage connector pins or sockets with multimeter probes. Failure to comply may result in damage to equipment. Remove rings, bracelets, watches, necklaces, and any other jewelry before working around vehicle. Jewelry can catch on equipment and cause injury or short across electrical circuits and cause severe burns or electrical shock. Change 1 2-565 TM 9-2320-365-20-1 VOLTAGE TEST Do not let wires slip through hole into cab structure. If wires slip into cab structure, vehicle will need further disassembly to retrieve wires. (1) Remove four screws from marker light base. Marker/ID Light Connector Wire Segment RH Cab Top Marker Light P55 P55 to splice E23 RH Cab Top ID Light Middle Cab Top ID Light LH Cab Top ID Light LH Cab Top Marker Light P50 P57 P60 P59 P59 to splice E23 P60 to splice E23 P57 to splice E23 P50 to splice E23 Table 2-11.1. Cab Clearance and Marker Light Connectors NOTE (9) If 12 VDC is not present, repair wire 1951b from connector (refer to Table 2-11.1. Cab Clearance and Marker Light Connectors) d (para 2-40) or replace cab clearance and or marker lights cable assembly (para 7-59) or M1081 cab clearance and marker lights upper cable assembly (para 7-56). (10) Position main light switch to OFF (2) Remove nut, lockwasher, terminal lug (refer to Table 2-11.1. Cab Clearance and Marker Light Terminal Lugs), and lockwasher from marker light base. Discard lockwashers. (3) Extend base and disconnect connector (refer to Table 2-11.1. Cab Clearance and Marker Light Connectors) from marker light connector. (4) Remove gasket from marker light base. Discard gasket. (5) Set multimeter to volts DC. (6) Connect positive (+) probe of multimeter to connector (refer to Table 2-11.1. Cab Clearance and Marker Light Connectors). (7) Connect negative (-) probe of multimeter to ground. (8) Position main light switch to SER DRIVE (TM 9-2320-365-10) and note reading on multimeter. (TM 9-2320-365-10).