DG Flugzeugbau DG-800A, Руководство по обслуживанию, Страница: 81 / 163

Maintenance Manual DG-808C
Issued: May 2010 TN800/41 4.20
4.14 Removal and installation of the tension gas-strut
(engine extension mechanism)
a) Removal :
1. Take a piece of tube with 12mm (.47 in.) inside diameter and 80 mm
(3.15 in.) length and cut it to receive two halfshells.
2. Retract the powerplant until the gas-strut is extended a little further than
80mm.
3. Place both halfshells onto the piston rod of the gas-strut. Extend the
engine a little further, so that the two halfshells block the gas-strut.
4. Remove the gas-strut.
b) Installation is the reverse of removal
c) Installation of a new gas-strut
1. Extend the new gas-strut with a pulley block to place the halfshells
or
2. Install the gas-strut to the front mounting point in the aircraft and
produce a metal plate with two holes diameter 8 mm (.32 in.) 80 mm
(3.15 in.) apart. Bolt this plate to gas-strut and propellermount and
retract the engine to extend the gas-strut far enough to place the
halfshells. Remove the plate.
d) Securing the rod end to the piston rod
The rod end of the gas-strut must be glued onto the thread of the piston rod
with Loctite 638. The correct securing is marked by a red dot of marking
paint on piston rod and rod end. After removal of the gas-strut check if the
marking is existing and not damaged. If not the rod end must be screwed
off and glued on again.
The same applies with installation of a new gas-strut.
Remove any remains of Loctite and any dirt according to the instructions in
section 4.10. To tighten the screwed connection, hold the piston rod against
rotation using a small pipe wrench, wrap a piece of fine emery cloth around
the end of the piston rod to protect the rod.
In addition the rod end is secured with a roll pin 2.5x14 DIN7346 St, see
sketch.