Sleeve Thermostats, Replacing - Volvo Penta TAD1630G Workshop Manual

Service procedures - cooling system

Sleeve thermostats, replacing

Special tools: 999 6863
1
Drain the coolant.
2
Remove the pipe between the thermostat housing and the
upper radiator hose. Push the pipe to one side.
3
Remove the pipe between the coolant pump and the thermo-
stat housing.
4
Remove the thermostat housing.
5
Remove the thermostats and the O-rings.
140
6
Remove the old sealing rings by tapping them down with
a suitable drift.
Note: Do this carefully so as not to damage the sealing ring
contact surfaces in the housing.
7
Fit the new sealing ring to drift 999 6863
Note: Fit the sealing ring with the wide metal edge facing up-
ward.
Group 22