Cooling system
03
Two different types of thermostats are used in Volvo
Penta marine engines - disk thermostats and piston
thermostats.
D5/D7, D9, D2 and D6 have piston thermostats.
NOTE: If an engine is connected to a central cool-
ing system, which requires full flow through the
engine, and the system has its own thermostat, the
thermostat(s) of the engine must be forced fully open.
The following table shows opening temperatures for
the various thermostats and the gap of the opening
when fully open.
IMPORTANT! Do not run an engine without
thermostats.
Thermostats, external cooling
Engine: D5/D7 D9 D12 D16
No. of thermostats
Opening temp. °C (°F) 83 (8) 86 (87) 76 (69) 86 (87)
Fully open °C (°F) 95 (203) 96 (205) 86 (85) 96 (205)
84* (83)
Opening with fully
open therm. mm (inch) 8 (0.32) 6 (0.63) 6 (0.63) 6 (0.63)
*) Two thermostats (blue marking) open at 76°C and are fully open at 90°C. The third thermostat (red marking) opens at 70°C and is fully
open at 84°C.
Thermostat data
Содержание D11 series
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