Removing and engine installing coolant thermostat

AR20.10-P-2460GG

11.11.96

ENGINE 606.964 in MODEL 463

ENGINE 602.983 in MODEL 461

P20.10-0254-05

Shown on engine 606.964 in model 463

1 Air cleaner housing

17 Coolant thermostat housing

19 O-ring

20 Coolant thermostat

 	Removing, installing
 Danger!	Risk of injury to skin and eyes from scalding from hot coolant which splashes out. Risk of poisoning from swallowing coolant.	Do not open the cooling system unless the coolant temperature is below 90 °C. Open cap slowly and allow the pressure to release. Do not pour coolant into containers for drinks. Wear protective gloves, protective clothes, and eye protection.	AS20.00-Z-0001-01A
1	Drain coolant	at radiator and crankcase	AR20.00-P-1142GG
	Notes on coolant	All engines	AH20.00-N-2080-01A
2	Remove air cleaner housing (1)
3	Remove coolant thermostat housing (17)		*WH58.30-Z-1001-06A
			*WH58.30-Z-1002-06A
4	Remove coolant thermostat (20)	 Installation: the recess on the coolant thermostat (20) should be aligned with the rib on the coolant thermostat housing (17) (arrow)
		Replace O-ring (19)
5	Install in the reverse order	Inspect cooling system for leaks	AR20.00-P-1010HA

Commercially available tools

Number	Designation
WH58.30-Z-1001-06A	6 mm socket hexagon on flexible shaft for hose clamps with worm drive
WH58.30-Z-1002-06A	7 mm socket hexagon on flexible shaft for hose clamps with worm drive