Maintenance Manual DG-808C
Issued: May 2012
TN 800/41
4.23
4.16.2
Removal of the coolant
1.
Prior to removal of the coolant check the coolant pump see above,
2.
Retract the engine until the engine doors just stay open.
3.
Remove the straight hose connector GS 16 from the coolant hose on
top of the coolant pump and replace it by a T-connector TS 16
(supplied with the glider service set).
4.
Install a hose with 16 mm (0.6 in.) inside diameter to the T-connector.
Hold the hose into a container placed below the lowest point of the
cooling system.
5.
Extend the engine. After all liquid has run out of the system, switch on
the ignition to run the coolant pump for a short time.
6.
Replace the T-connector by the straight connector again.
4.16.3
Filling and bleeding
1.
The engine must be cold. Extend the powerplant.
2.
Remove the screw cap of the radiator. Press down on cap for easier
handling. Fill in coolant until the radiator is completely filled.
3.
Switch on the ignition to run the coolant pump. Look into the radiator,
you must see the coolant bubbling. If this is not the case there may be
air bubbles in the hoses. Squeeze the hoses 1 and 5 (see diagram 9)
several time until the coolant starts bubbling. Run the coolant pump for
approx. 1 minute. Switch off the ignition. If necessary top up the
radiator. Close the radiator cap
4.
If the procedure according to item 3 wasn’t successful retract the engine
nearly completely, switch on the ignition and squeeze the hoses 2 and 6
(see diagram 9) several time. Extend the engine again and remove the
radiator cap, switch on the ignition and check the coolant for bubbling.
If OK, close the radiator cap.
5.
Run the engine to warm up, then run approx. ½ minute at full throttle.
Stop the engine.
6.
Allow the engine to cool down. Remove the radiator cap and check the
coolant level. The coolant level should be approx. 2 cm (0.8 in.) below
the top of the radiator. If necessary top up to this level.
7.
Close the radiator cap again.
Summary of Contents for DG-800A
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