DG Flugzeugbau DG-800A, Руководство по обслуживанию, Страница: 29 / 163

Maintenance Manual DG-808C
Issued: May 2012 TN800/41 1.16
1.11.9 Propeller brake
see diagram 13
a) manual activation: The brake cable can be adjusted at the adjustment screw at the
rear end of the engine or directly at the screw nipple at the brake lever at the engine.
b) electrical activation (Option): The electric brake-motor acts on the same brake
lever. Adjustment is similar to the manual brake and via a second adjustment screw
located directly at the brake motor which is mounted to the lower left side of the
engine bay or directly at the screw nipple at the brake lever at the engine.
With the brake off, there should be a clearance of at least 0.5 mm (.02in) between
the brake pad and the magneto flywheel. The brake pad should be replaced when
there is only 3 mm (.1 in) of pad left. The pad has to be glued on with UHU Plus
300. The glue must be cured for min. 5 minutes at 180°C (356°F). Replacement
pads: part no. 8M275/3.
Or screw on brake pad with mounting bracket: part no. 8M287/3. The mounting
bolts have to be secured with Loctite 243.
Modified mounting of the propeller-brake retaining rubber cord (Option
according to TN 800/41 item 9), see Diagram 13b:
A modified mounting of the propeller-brake retaining rubber cord may reduce the
wear of the levers and the connecting rod.
1.11.10 Tightening torques and locking:
a) All bolts on the engine which are not secured by selflocking nuts should be
tightened according to the following:
M 10
- 40 N m ( 29 ft lb)
M 8 - 20 N m ( 15 ft lb)
M 6 - 12 N m ( 9 ft lb)
They should also be secured with Loctite 243. All locked and secured bolts are
marked with red paint which also marks the respective component at that
particular point. Whenever a bolt has to be tightened or taken off, the red paint
should also be removed and only renewed after the bolt is once again securely
attached with Loctite.
b) Cylinder head nuts 20 N m (15 ft lb)
CHT probe 15 N m (11 ft lb)
spark plugs 20 N m (15 ft lb)
propeller 20 N m (15 ft lb)
magneto flywheel 80 N m (58 ft lb)
lower drive belt pulley 100 N m (73 ft lb)
1.11.11 Fire warning light
The probe is located at the engine bay side wall opposite to the carburettor.
A 0.5 A fuse is plugged into the positive wire at the connector plug of the light.
Check of the control light (self-test- function): When switching on the main switch
the fire warning light must flash once.
Check of the probe: You may heat the probe up to 160° C (320 °F). Use a fan heater
with a thin nozzle to heat the probe only. The DEI-NT must display a warning
message „Fire“.
Warning: Don’t execute this test without measuring the temperature close to the probe.
160° C (320 °F) must not be exceeded.