Section  6 
Generator 
6-1.  GENERAL 
This  chapter  covers  disassembly,  inspection,  and  testing  of 
the  generator  components.  See  Figures  6-l  and  6-2  for 
parts  identification. 
grounded.  Never  touch  electrical  leadi  or  appliances  with 
wet  hands,  when  standing  in  water,  or  on  wet  ground  as 
the  chance  of  electrocution  is especially  prevalent  under 
such  conditions. 
6-2.  TROUBLESHOOTING 
6-3.  GENERATOR  DISASSEMBLY 
Refer  to  Table  4-2  to  troubleshoot  the  generator.  Follow 
the  disassembly  procedure  in  Section  6-3  as far  as necessary 
to  inspect  a  component,  then  start  reassembly  procedure  in 
Section  6-12  at  the  point  the  component  is replaced,  When 
a  fuse  must  be  replaced,  always  inspect  the  related  com- 
ponents  and  wiring  to  locate  the  cause.  Refer  to  the  wiring 
diagrams  in the  back  of  the  manual, 
A 
WARNING 
HIGH  VOLTAGE!  Remember  that  the  function  of  a  gen- 
erator  set  is  to  produce  electricity  and  that  wherever 
electricity  is  present,  there  is  the  potential  danger  of 
electrocution.  Take  the  same  precautions  with  electrical 
appliances  in  your  coach  that  you  would  observe  in  your 
home.  Keep  away  from  electrical  circuits  and  wiring  while 
the  set  is  running  and  have  electrical  service  performed 
only  by  qualified  electricians.  Make  sure  unqualified 
persons,  especially  children,  cannot  gain  access  to  your 
set-keep  the  compartment  door  locked  or  securely 
latched  at  all  times.  Be  sure  that  generator  is  properly 
NOTE 
Tag  leads  to  ease  re-installation.  Scratch  align- 
ing  marks  on  parts  before  removing  to  aid 
reassembly. 
7.  Disconnect  battery  of  generator  set,  negative  lead  first. 
2.  Disconnect  the  generator  ground  strap  at  the  tray  (Fig- 
gure  6-3  or  6-4).  On  the  3.5kW  and  4.5kW  (single),  remove 
the  battery  positive  lead  from  the  generator  positive  stud 
and  remove  stud  remove  stud  from  the  generator  mounting. 
3.  Remove  the  center  panel  (4.5,  5.5,  7,  7.5kW),  see  Fig- 
ure  6-5;  or  remove  the  end  panel  (3.5kW),  see  Figure  6-6. 
4.  Remove  the  plug  from  the  voltage  sensing  relay  Figure 
6-7).  The  relay  can  now  be  removed. 
‘j 12b 
1.  End  Bracket 
7.  Panel,  Center 
12b.  Voltage  Regulator  (7.5KW)  18.  Ball  Bearing 
2.  Stator  8. 
Circuit  Breaker(s) 
13.  Voltage  Sensing  Relay  (VSR)  19.  Washer 
3.  Rotor 
9.  Junction  Panel 
14.  Thru  Bolt  20.  Tolerance  Ring 
4.  Adapter 
IO.  Generator  Fan 
15.  Over  Bolt 
21.  Brush 
5.  Guard,  Fan  11.  Bearing  Cap 
16. 
End  Bracket 
22.  Brush  Holder 
6.  Junction  Panel 
12a.  Voltage  Regulator  (3.5kW-7kW) 
17.  Slip  Ring 
Figure  6-l. 
Generator,  Cross Sectional  View 
6-1