Table of Contents
Advertisement
d) Close the radiator cap.
e) Run the engine to warm up, then run approx. ½ minute at full throttle.
Stop the engine.
f) 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.
g) Close the radiator cap again.
4.10.5.3 Removal of the coolant
a) Extend the powerplant completely, don't remove the radiator cap.
b) Remove the screw plug from the coolant inlet fitting 10M171 at the
lower rear end of the rear cylinder (service port see diagram 14), catch
any coolant dripping out with cloth or cleaning paper. Screw in a hose
connector GES8/M10x1 with hose 2 m long.
c) Hold the hose into a container with approx. 2 Liter (0.53 US. gal.)
volume.
d) Remove the radiator cap and let the coolant drain into the container.
e) Reinstall the screw plug, use a new copper sealing ring 10x14x0,8 DIN
7603 A.
4.10.5.4 Inspection of the coolant pump
a) Extend the engine.
b) Remove the coolant hose from the radiator (upper end). insert the test
adapter W59 (drawing see enclosure to this MM) into the hose and
secure with a hose clamp. Install a PVC hose (instrument line) on the
other end of the adapter and put its end in a calibrated container.
c) Switch on the ignition and measure the time needed to fill 0.2 liters into
the container, then switch off the ignition immediately. Otherwise the
pump will suck in air and bleeding may be difficult.
Normal time is about 15 seconds.
d) If the time needed exceeds 20 seconds the pump is worn and should be
exchanged. Repeat the test after installation of the new pump.
e) Remove the adapter and connect the coolant hose to the radiator again.
f) Remove the screw cap of the radiator. Press down on cap for easier
handling and fill in the coolant from the test, if necessary refill coolant.
g) Switch on the ignition to run the coolant pump. Run for approx. 1
minute. Switch off the ignition. If necessary top up the radiator.
h) Close the radiator cap.
Issued: October 2012
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
Maintenance Manual DG-1000M
TN1000/22
4.24
Advertisement
Table of Contents
