Coolant pump and thermostat
P0006040
The coolant circulation thermostat is of piston type
and has a temperature sensitive wax body that con-
trols opening and closing. The thermostat begins to
open when coolant reaches 82 °C (179.6 °F).
A Thermostat in closed position (cold engine).
B Thermostat in open position (hot engine).
C the coolant pump cover (
1
) is made of alumi-
num. There are channels in the rear section (
8
)
of the pump for coolant distribution, and the
cover contains a plastic impeller (
2
), shaft seal
(
3
), bearing (
4
) and belt pulley (
5
). The shaft
bearing is a permanently lubricated combined
roller bearing. Between the shaft seal and the
bearing there is a ventilated space (
6
) that dis-
charges behind the belt pulley (
7
). The pump
rear section (
8
) is bolted to the cylinder block.
20-0 Engine Information, General
100
7748841 06-2010
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