TM 10-3930-653-14&P Fig. 4 -177.  Separating Front Cover with Rotor from Rear Cover (4)   Remove three set screws from bearing retainer, and separate rotor from front cover. Fig. 4-178.  Removing Rotor (5)   Pull   out   rear   bearing   from   rotor   assembly   with   a press or bearing puller. Fig. 4-179.  Pulling Out of Rear Bearing (I) Fig. 4-180.  Pulling Out of Rear Bearing (II) (6)   Remove diode cover fixing screw, and remove diode cover. Disconnect three stator coil lead wires from diode terminal with a soldering iron. (’7)  Remove  "A"  terminal  nut  and  diode  installation  nut, and remove diode assembly. Fig. 4-181.  Removing Diode Assembly Note:    Use    care    in    handling    diode assembly to prevent undue stress on it 4-7-5-4.  INSPECTION AND REPAIR Remove  alternator  from  lift  truck  and  apply  tester between  lead  wire  F  (white  with  black  tracer)  and  lead wire E (black color). When    the    resistance    is    approximately    552,    the condition of brush and field coil is satisfactory. When no continuity exists in brush or field coil or when resistance differs   remarkably   between   those   parts,   disassemble and inspect. 4-105