TM 5-6115-593-12 TO 35C2-3-463-1 c. Remove  CB102  (23)  by  removing  screws  (17) and  lockwashers  (18)  to  release  circuit  breaker and bracket (24) from the panel.  Remove screw (19)  to  remove  circuit  breaker  padlock  device (20),  then  remove  screw  (21)  and  nut  (22)  to free CB102 (23) from bracket (24). (2) Installation. a. Install CB101 (14) using screws (12) and nuts (13). b.    Prepare  CB102  (23)  for  installation by  securing  padlock  device  (20)  to the  face  of  the  circuit  breaker  with screws    (19),    and    then    securing CB102  to  its  mounting  bracket  (24) with    screws    (21)    and    nuts    (22). Mount    CB102    (23)    by    securing bracket    (24)    to    panel    (37)    with screws (17) and lockwashers (18). c.    Reconnect wires to circuit breakers, and remove tags. 4-21.  PANEL MOUNTED RECEPTACLES. Replace defective receptacles J101 and J102 (9 and 35, figure 4-13) as follows: a. Removal (1) At   rear   of   panel   tag   and   remove   wires   from receptacles. (2) Remove   J101   and   J102   receptacle   mounting hardware and remove receptacle. b. Installation.  Install receptacles onto front panel with mounting hardware. Attach   wires   to   J102   with   screws and washers.  Carefully solder wires to J101.  Remove wire tags. 4-22.  PREHEAT SWITCH S105. a. Test (1) Toggle switch (27, figure 4-13) to the ON position. (2) At the rear of the panel, remove one lead from the switch. (3) With an ohmmeter (Rxl scale), test switch for  closed  circuit.    If  meter  indicates  an open circuit, replace switch. (4) Place    toggle    switch    to    OFF    position. Using ohmmeter on Rxl scale, test switch for   open   circuit.      If   meter   indicates   a closed circuit, replace switch. b. Replacement.    Replace  defective  toggle  switch S105 (27, figure 4-13) as follows: (1) Removal. (a) At   rear   of   panel,   tag   leads   and remove wires to switch. (b) Remove  switch  mounting  hardware and remove switch. (2)  Installation.  Install switch onto panel with mounting hardware.      Attach   wires   to   switch   and remove tags. 4-23.  CONTACTORS K107, K108, K109 AND K120. a. Inspect.  Inspect contactors K107 and K109 (54, figure   4-12)   and   K108   (51)   for   damage   to phenolic   and   metal   parts.      Inspect   K108   for binding     or     damaged     mechanical     interlock. Inspect  K120  (57)  for  damage.    Refer  to  TM5- 6115-593-34 for maintenance of K120. WARNING Use   extreme   care   when   connecting power supply to avoid electrical shock. b. Test.    Disconnect  and  tag  wires  to  contactors K107, K108, and K109 and proceed as follows: (1) Wire contactors K107 and K108 into test set-up as shown in figure 4-14. 4-43