Dismantling
Remove the engine cover.
With the ignition off, disconnect the ground wire from the battery.
Remove the generator.
Remove the air conditioner compressor from the accessory bracket. Secure it with wire to the body.
Note: Do not open the refrigerant circuit.
Drain coolant.
Pic. 2.193. water hose clamp
Remove the water hose 2, for which remove the mounting bracket 1 (pic. 2.193).
Pic. 2.194. Bolts of fastening of an arm of additional units
Unscrew the bracket of additional units - bolts 1–6 (pic. 2.194).
Pic. 2.195. thermostat mount
Disconnect plug 1 and remove the engine cooling system thermostat (pic. 2.195).
Installation
Clean the seating surface of the O-ring.
Replace the O-ring and moisten it with coolant.
Install the engine cooling thermostat.
Install the water hose 2, the fixing bracket 1 must lock into place.
Install the accessories bracket.
Install the generator.
Install the air conditioner compressor.
Install poly V-belt.
Fill with coolant.
Checking the thermostat of the engine cooling system according to the algorithm
Note: Gaskets and O-rings must be replaced.
Pic. 2.196. Large thermostat valve plate
Check thermostat when cold. The large valve disc must fit snugly against the connecting flange around the entire circumference (pic. 2.196).
If not, replace the engine cooling thermostat.
Connect the contacts of the thermostat of the engine cooling system according to the algorithm with auxiliary wires from the set of auxiliary measuring tools to the battery. Holding with tongs, lower it up to the flange vertically into a pot of boiling coolant (mixing ratio 50% G12).
Caution: Do not touch the metal parts of the thermostat as they get hot.
The heating resistor additionally heats the wax in the thermostat.
Pic. 2.197. Checking the minimum travel of the thermostat valve
Check if the minimum stroke of 7 mm is reached after 10 min (pic. 2.197).
If the stroke is 7 mm, disconnect the battery power.
Note: This test must not be carried out outdoors. Otherwise, the elastic element may be damaged.
If the minimum stroke is not reached, replace the engine cooling thermostat.
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