Maintenance Manual LS4
Issued: May 2011
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Manual valid with the up-to-date cover page only
4.8 Removal and installation of the nose hook (Option)
Tools: Ratchet with 8 and 10 mm sockets, 3 and 4 mm hex head driver
sockets, 10 mm ring spanner, 12 mm open end spanner.
Note: Note length of bolts and positioning of washers for all assembly positions.
Do not include hook fixing bolts, when sending to overhaul.
4.8.1 Removal of the nose hook
- take canopy off the fuselage with a helper after pulling emergency canopy
release (see section 4.9).
- disassemble seat according to secton 4.3.
- under seat, disconnect C.G. release cable from pulley, watch for spacer
bushing.
- pull pedals to rearmost position
- Only LS4, LS4-a: remove rudder pedal assembly and trim weight holder.
- Only LS4-b: disconnect trim weight holder from pedal guide >a<
- Only LS4-b: disconnect 2 bolts >b< at front end of canopy support from
bracket, move support as far back into cockpit as possible, perhaps
disconnecting gas strut at one end as well.
disconnect both canopy support brackets including trim mass holder from
nose bulkhead >c< and move backwards
- pull nose hook together with brackets backward from bulkhead
- disassemble nose hook from support >d< and >f<, watch for 4 spacers
between nose hook case and support, at >f< 1 additional spacer inside
nose hook case
- disassemble drive extension with cable at >e< from drive lever
4.8.2 Installation of nose hook
Installation is in reverse order, watch out especially for the following:
- insert spacer at >f< before assembly of drive lever extension
- when assembling nose hook into support, direct spacers into position
using the 12 mm open ended wrench
- after assembly at >c< and connection of C.G. hook cable to pulley
(spacer!), check function of both hooks
- before installation of seat, check functions of pedal system and locking of
pedal adjustment, function of canopy support, electrical and pneumatic
installations of all instrumentation and check for foreign matter.
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