The coolant must be drained on a cold engine.
Remove the expansion tank cap.
Install a coolant collection pan under the engine.
Pic. 3.45. Location of plugs (1) removal of air from the cooling system
Unscrew plugs 1 (see fig. 3.45) to remove air from the cooling system.
Pic. 3.46. Location of the bottom pipe (1) radiator
Loosen the clamp, remove the hose from the lower radiator pipe 1 (see fig. 3.46), drain the coolant from the radiator and hose.
Pic. 3.93. Drain plug location (1) coolant from the cylinder block
Remove drain plug 1 (pic. 3.93) and drain the coolant from the cylinder block.
After draining the coolant, replace the drain plug.
Pic. 3.47. Mounting on a special expansion tank 0173/2 (1) for filling coolant
Instead of the cap of the expansion tank, screw in a special container 1 (see fig. 3.47) 0173/2 for filling coolant. This is necessary in order to completely fill the engine cooling system with coolant and remove air from it. In the absence of a special container, you can make it yourself.
Slowly pour BASF GLYSANTIN G33-23F or GUTIT ESSEX REVKOGEL 2000 coolant into the cooling system.
Pour coolant into the expansion tank until it flows out through the hole for the bleed plugs. Screw on caps 1 (see fig. 3.45).
For proper bleeding of the cooling system, a special container 1 (see fig. 3.47) 0173/2 to fill the coolant must be filled up to the 1 liter mark.
Start the engine and let it run at a crankshaft speed of 1500-2000 min-1 until the end of the second cooling cycle (turning on/off the radiator fan), while maintaining the fluid level at 1 liter.
Stop the engine.
Remove special container 1 (see fig. 3.47) 0173/2 to fill the coolant and screw on the expansion tank cap.
Check the coolant level and top up if necessary.
On a hot engine, the coolant level should be at the mark «Max», on a cold engine - between the marks «Max» And «Min».