TOHATSU MD 70-90C2 Service Manual page 41

unctional Limit
hen the valve opens even slightly at ambient temperature
Check valve opening temperature by immersing the thermostat in water and
gradually increasing water temperature
hen the tips or upper and lower surface lip areas show wear, cracks or damage
hen anode shows excessive corrosion
0.4mm (0.016 in)
hen depth of wear is 0.1 mm (0.004 in)
hen lip area shows deterioration, heat discoloration, or damage or
when reduces interference to 0.5 mm (0.02 in) or less
TLDI 75/90C2 2010
Action To Be Taken
Replace with new part
Replace with new part.
Replace with new assembly.
Replace when wear is excessive.
Replace when wear is excessive.
Replace with new part.
Replace with new part.
Adjust or replace with new parts.
Replace if over specified limit.
Replace with new part.
Replace with new part.
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