TM   5-6115-332-14 P-8-614-14 TO 35C2-3-424-1 b.  Cleaning,  Inspection  and  Repair. WARNING Clean all parts in a well-ventilated area. Avoid inhalation of solvent fumes and prolonged exposure of skin thoroughly. Dry cleaning solvent (Fed. Spec. P-D-680 Type II)  used  to  clean  parts  is  potentially dangerous  to  personnel  and  property.  Do not use near open flame or excessive heat. Flash point of solvent is 140°F (60°C). (1) Clean items with cleaning solvent, Fed. Spec. P–D-680 or Type II, and dry thoroughly. (2) Inspect the cables for cracked, frayed, or missing sections  of  insulation. (3) Inspect for corroded, burned, or damaged cable ends. (4) Inspect the terminal stud for signs of burned areas or  stripped  threads. (5) Inspect the grommet for cracks. (6) Replace all defective parts. WARNING Make sure that battery terminal covers are installed on both battery terminals before installing  cables. c. Installation (1) Position terminal stud in place on skid base and install  insulating  washers  on  stud. (2)  Secure  one  end  of  positive  battery  cable  to terminal  stud  with  lockwasher  and  nut. (3) Place battery terminal cover over positive battery terminal. Place other end of positive cable over positive terminal  on  battery  and  secure  by  tightening  nut. (4)  Install  rubber  grommet  in  engine  shroud. (5)  Thread  starter  cable  thru  grommet. (6)   Secure   starter   cable   to   terminal   stud   with lockwasher  and  nut. (7)  Secure  other  end  of  starter  cable  to  the  engine starter. (8) Secure end of negative battery cable to skid base with  screws,  lockwashers,  and  nuts. (9) Place battery terminal cover over negative battery terminal.  Place  other  end  of  negative  cable  over  negative terminal  on  battery  and  secure  by  tightening  nut. (10) Place fuel can in bracket and install fuel can strap. (11) Secure by depressing clamp. (12) Install fuel can adapter in fuel can and lock by depressing  locking  handle. 4-22.1  Relays  and  Resistors  (Model  MEP017A) Change 8 Relays  K1,  K2,  K3,  and  K4  furnish  starting,  stopping, safety, and operational control for the generator. The relays are  mounted  on  printed  circuit  board  TB3. (1) Relay K1 is used to start the generator engine by energizing  the  starter  solenoid  through  the  normally  closed contacts  of  relay  K3. (2) Relay K2 is used to stop the engine. The relay is energized by the S1 stop switch and S5 remote-local switch. When  relay  K2  is  energized,  relay  K3  and  K4  are de-energized,  thereby  removing  the  battery  charger  from the circuit and grounding the magneto through the normally closed  contacts  or  relay  K4. (3) Relay K3 is energized by the battery charger rectifier through the normalIy closed contacts of K4, and de-energized  by  low  oil  pressure. (4) Relay K4 is energized through the normally closed contacts of relay K2 and the silicon diode, CR1. This occurs  when  start  and  stop  switch,  S1  is  activated. 4-23. Battery  and  Battery  Frame. a. Testing l Do  not  smoke  or  use  an  open  flame  near batteries.  Batteries  generate  an  explosive gas. l Electrolyte contains sulfuric acid and can cause  severe  burns.  Handle  it  with  care.  If  the solution comes in contact with the body or clothing,  rinse  immediately  with  clean  water. The 6TN and 6TL batteries can be mixed or matched. However, maintenance–free batteries cannot be mixed or matched with military batteries. The 6TN and or the 6TL batteries  will  perform  properly  in  hot  weather  as  long  as electrolyte  levels  are  carefully  monitored.  If  the  electrolyte expands  and  causes  the  level  to  rise,  some  fluid  must  be removed.  If  the  level  becomes  too  low  due  to  evaporation, distilled  water  may  be  used  to  obtain  the  proper  level.  A good grade of drinking water (excluding mineral waters) may  be  used  if  distilled  water  is  not  available. Electrolyte (NSNs 6810-00-249-9354 and 6810-00-843-1640)  have  a  specific  gravity  of  1.280  and should be used in these batteries. Do NOT adjust the electrolyte  in  wet  batteries  to  a  lower  specific  gravity. (1) The battery should be tested with a hydrometer and kept to a specific gravity of 1.250 or above. NOTE Before testing the battery remove the terminal cover. (2) Always test a battery for degree of charge before adding water. The specific gravity between 4-44