Thermostat Assembly Inspection

WARNING: This page is about a different variant/trim than selected.

Check to make sure that air bleed valve (1) of thermostat assembly is clean.
Check to make sure that valve seat (2) is free from foreign matters which would prevent valve from seating tight.

Fig 1: Identifying Air Bleed Valve And Valve Seat
Courtesy of SUZUKI OF AMERICA CORP.
Check thermostatic movement pellet as follows.
1. Immerse thermostat assembly (1) in water, and heat water gradually.
2. Check that wax pellet starts opening at specified temperature.
  Temperature at which valve begins to open (at lift 0.35 mm (0.014 in)):
  
  80 - 84 °C (176.0 - 183.2 °F)
  
  Temperature at which valve become fully open:
  
  95 °C (203 °F)
  
  Valve lift:
  
  More than 8 mm (0.3 in) at 95 °C (203 °F)
  
  Fig 2: Checking Thermostat Assembly
  Courtesy of SUZUKI OF AMERICA CORP.
If valve starts opening at a temperature substantially below or above specified temperature, replace thermostat assembly. See THERMOSTAT ASSEMBLY REMOVAL AND INSTALLATION .