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
4.3 Removal and installation of seat shell
4.3.1 Removal and installation of seat shell LS4 and LS4-a
4.3.1.1 Removal of seat shell LS4 and LS4-a
- Disconnect the seat back at the base and the seat back adjustment cable
at the left cockpit wall, swivel seat back out of the cockpit to the right
hand side.
- Remove the rear part of the seat shell (3 bolts boltsULS-M6 (6 mm
thread), hexagon recess No. 4 per side and 4 countersunk screws
Philipps recess at front end).
- Remove the screws of the front part of the seat shell (5 countersunk
screws M4 with Philipps recess per side) and .
- Remove the bolt fixing the bracket at the right hand side of the
instrument panel to the rudder pedal suspension.
- Now you can lift the front part of the seat shell including the instrument
panel for maintenance work.
- To remove the front part of the seat shell completely you have to
remove the instrument panel. This work should only be done for
installation or removal of the nose hook.
4.3.1.2 Seat shell installation LS4 and LS4-a
Follow disassembly steps in reverse order, in addition observe the
following:
- Inspect seat area for foreign matter, tools etc.
- Check control system after installation for proper operation.
Check especially function of release system: hook opening completely
as well as clearance (approx. 3 mm <0.12 in.>) at T-shaped handle with
landing gear down and locked.
4.3.2 Removal and installation of seat shell LS4-b
4.3.2.1 Removal of seat shell LS4-b
- Disconnect the seat back at the base, swivel seat back out of the
cockpit.
- Remove 8 boltsULS-M6 (6mm thread), hexagon recess No. 4 and 4
countersunk screws Philipps recess at front end. Watch for bolt length
and installation position.
- Remove T-shaped handle from pedal adjuster cable (nut M5 width over
flats 8 mm, prevent rotation of the cable by holding the cable end with
pliers), pull cable through seat guide tube.
- Loosen stick cover, move air brake handle into rearward position
- Swivel left seat side up and take seat out to upper left.
- Disconnect release cable pulley from forward mounting at pedal
support, store seat shell sideways.
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