TM 10-3930-669-20 WARNING Remove all jewelry such as rings, dog tags, bracelets, etc.  If jewelry contacts battery terminal, a direct short may result in instant heating of tools, damage to equipment, and injury or death to personnel. VOLTAGE TEST (1) Remove relay R1 (Para 7-33). (2) Connect relay R1, terminals 30 and 87. (3) Set multimeter select switch to VOLTS DC. (4) Connect positive (+) multimeter lead to relay R1, terminal 30. (5) Connect negative (-) multimeter lead to a known good ground. (6) Start engine (TM 10-3930-669-10). (a) If there are not 22 to 24 vdc present, perform Steps (7) and (8) below and replace alternator (Para 7-2). (b) If there are 22 to 24 vdc present, alternator is OK. (7) Shut down engine. (8) Install relay R1. VOLTAGE TEST (1) Set multimeter select switch to VOLTS DC. (2) Connect positive (+) multimeter lead to alternator, terminal B+. (3) Connect negative (-) multimeter lead to a known good ground. (4) Start engine (TM 10-3930-669-10). (a) If there are not 22 to 24 vdc present, perform Step (5) below and go to Step 4 of this Fault. (b) If there are 22 to 24 vdc present, perform Step (5) below and replace alternator power wire (See schematic Appendix F). (5) Shut down engine. 2-285