Withdrawal
AHL engine
2. Disable "mass" battery wire.
3. Peel off the front body panel (hood latch bracket) into position "maintenance", as described in chapter 11.
4. Drain the coolant as described in chapter 1A or 1B.
5. Remove the accessory drive belt as described in chapter 2A.
6. Loosen the clamp and remove the upper radiator hose as described in paragraph 3.
7. Pull the dipstick tube out of the guide bushing in the cylinder block.
8. Remove the alternator as described in chapter 5A.
9. Disconnect the lower radiator hose from the thermostat housing.
10. Turn away and remove bolts of fastening and accurately remove a cover of the case of the thermostat. Remove the thermostat from the housing and then remove the O-ring. You need a new ring to install (pic. 4.10).
All other models
11. Disconnect "battery main wire".
12. Drain the coolant as described in chapter 1A or 1B.
13. If you need to improve access, loosen the clamp and disconnect the cooling hose from the thermostat cover.
14. Remove the mounting bolts, then remove the thermostat housing cover, and then the O-ring from the engine (pic. 4.14, a, b). Throw away the ring; a new one is required for installation.
15. Remove the thermostat, remembering how it was installed (pic. 4.15).
Examination
16. You can roughly check the operation of the thermostat by hanging it on a wire in a pot of water. Boil water in it - the thermostat should open at the moment of boiling. If it does not open, a replacement is inevitable.
17. If there is a thermometer with a sufficient measurement range, you can measure the opening temperature of the thermostat and compare it with the data in Specifications. The opening temperature value is usually stamped on the thermostat. If the thermostat won't open with or without a thermometer, or won't close when taken out of boiling water, discard the thermostat and get a new one to install.
18. If the thermostat does not close when it cools down, it also needs to be replaced.
Installation
All models
19. Installation is the reverse procedure. Pay attention to the following:
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