ARMY TM 9-6115-670-14&P 4-141 4.55.  CURRENT SHUNT. This task covers: a. Inspect b. Replace INITIAL SETUP Tools General Mechanic's Tool Kit (Item 1, Appendix B) Multi-meter Equipment Conditions MASTER ON-OFF switch on APU control unit set to OFF. Air filter removed (para 4.45.). Materials/Parts Current Shunt INSPECT a.  Visually inspect shunt for signs of burns, corrosion, breakage or short out.  Replace shunt if defective. b.  Check for loose connections.  Tighten any loose connections. c.  Test for continuity. REPLACE a.  Remove four screws (JTACS), or slotted hex-head bolts (SICPS and WIN-T), flat and lock washers (2, Figure 4-43), and generator housing top cover (1). b.  Remove two screws, two wing nuts and lock washers (4a) (JTACS), or four slotted hex-head bolts (SICPS and WIN-T), flat washers and lock washers (4) and generator housing side cover (3). c.  Remove two machine screws, lock washers and flat washers (7) from shunt (6).  Tag and remove electrical leads (6a) from shunt. d.  Remove two hex-head bolts and flat washers (8) from shunt (6).  Tag and remove electrical leads (8a) from shunt. e.  Remove two bolts, lock washers, and flat washers (5, Figure 4-5) from generator bracket (6) and air deflector (4).  Remove air deflector. WARNING    Ensure  that  APU  DC  power  supply  is  disconnected.   Failure  to  observe  this  warning  could  result  in  severe injury or DEATH to personnel. WARNING Ensure  that  the  APU  is  turned  off  and  completely  de- energized before opening generator housing.  Failure to observe  this  warning  could  result  in  severe  injury  or DEATH to personnel.