Maintenance Manual LS8
Issued: June 2016 TN8024
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
4-4
4.1.3 Rudder
Removal of the rudder
(1) disconnect rudder cables.
Attention: Don’t lose spacing casings.
Attention: Rudder cables may be drilled. If this is changed
unintentionally, neutral positions of rudder and pedals do no longer
match and must be realigned as detailed below.
(2) loosen nut at lower bearing (6mm thread, M6 LN9348 or DIN985-8 zn,
width over flats 10mm) using a socket wrench, remember sequence and
position of washers.
(3) lift rudder upward from bearings.
Installation of the rudder
(1) grease bearings according to lubrication schedule, see section 3.4.
(2) install new V-seals if necessary
(3) lower rudder into bearings, do not use force !
(4) check radial play of upper bearing: maximum permissible radial play 0.5
mm <0.02 in>. If necessary renew brass bushing. Make sure that non-
concentric position of bearing keeps relative position to direction of
flight. Bond bushing with e.g. Loctite 638.
(5) connect rudder cables provisionally, do not forget to insert spacing
casings into thimbles.
(6) check rudder pedal alignment: with pedals in neutral position check if
rudder is neutral.
If rudder is deflected to one side, twist opposite
cable counter-
clockwise (maximum 5 turns) until properly aligned.
Should more than 5 turns be necessary for alignment, exchange cables.
Caution: Never turn cables clockwise !
(7) place washers on cable connection bolts and tighten nuts M6 LN9348 or
DIN985-8 zn, width over flats 10 mm, with maximum torque 6.4 Nm
(0.64 mkg, 4.623 ft lbs).
(8) set up washers at lower bearing as found during disassembly (normally:
recessed washer first, then large washer). Tighten nut (6 mm thread,
LN9348 or DIN985-8 zn, width over flats 10 mm) with maximum torque
6.4 Nm, (0.64 mkg, 4.623 ft lbs). After assembly the rudder should have
slight axial play, maximum axial play 1 mm (0.04 in).
(9) if necessary, restore gap seals (convex plastic strip), see section 4.2.3 for
details.
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