TM  10-3930-638-24&P 2-31. SENDING UNITS AND SWITCHES MAINTENANCE (cont) c. Engine and Transmission Temperature Switches (cont). (2) Transmission Temperature switch (cont). STEP LOCATION ITEM ACTION REMARKS TESTING 6 Transmission  temperature  a.  Fill  container switch with water b.  Suspend threaded portion  of switch in water c. Connect ohm- Ohmmeter should indicate infinity meter be- tween switch terminal and body d.  Slowly  heat Ohmmeter should indicate zero ohm when water to 280 temperature of water is between 285-272 degrees  while degrees observing ohmmeter NOTE Replace  transmission  temperature  switch  if  proper  indication is not obtained in step 6 above. e.  Remove  switch from  water and discon- nect ohm- meter  leads INSTALLATION/REPLACEMENT 7 Engine  compart- a.  Temperature  switch  (4)  Install  and Turn  clockwise  until  securely  mounted  to ment front, right tighten transmission side  of  vehicle b. Wire lead (3), lock Install  and Until wire lead (3) is securely mounted to washer (2) and nut (1) tighten switch terminal c. Wire lead (3) and Seal Use silicone rubber sealer switch terminal d.  Resistor  (6) Position In retainer halves (5) e. Retainer halves (5) Push together To secure resistor (6) and turn clock- wise 2-166