DG Flugzeugbau DG-800A, Руководство по обслуживанию, Страница: 30 / 163

Maintenance Manual DG-808C
Issued: June 2005 1.17
1.12 Retraction - Extension Mechanism
1.12.1 Layout
see diagram 10
1.12.2 The retraction-extension mechanism
The retraction-extension mechanism (spindle drive) consists of a 12 V
electrically driven sealed trapezoid screw shaft. A tension gas-strut is
installed parallel to the spindle drive to compensate the engine weight.
1.12.3 Extension force of the gas-strut
Time for extension approx. 11-13 seconds, time for retraction approx. 10-
12 seconds. If the extension takes much longer (4 seconds) then the gas-
strut must be replaced. Measure at room temperature with full batteries and
activation via the ignition switch.
1.12.4 Adjusting the powerplant retaining cable
Extend the engine via the ignition switch until the extension is switched off
by the position switch.
It should be possible in this position to pull out the retaining cable approx.
15mm (.6 in.) before it comes to its stop. If necessary adjust via the
adjustment screw. Secure the adjustment screw by fastening its lock nut.
1.12.5 Position switches
Position engine retracted: via a switch actuated by the propellermount.
Position engine extended: via a switch actuated by the muffler frame
1.12.6 Adjustment of the powerplant positions
Position engine extended for operation:
Extend the engine via the ignition switch until the extension is switched off
by the position switch. The angle

must be 91°. If necessary, the angle
has to be corrected by bending the metal lever of the position switch.

propeller mount
edge of engine bay