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
4.7 Removal and installation of the C.G. Hook
Tools: 3/8” or 1/4” drive ratchet, 8 and 10 mm sockets, 8 and 10 mm ring-
or open end spanners.
Note: Note length of bolts and positioning of washers for all assembly positions.
Do not include hook fixing bolts, when sending to overhaul.
4.7.1 Removal of the C.G. Hook
- Take canopy off the fuselage with a helper after pulling emergency
canopy release (see section 4.9).
- Disassemble seat according to section 4.3.
- Under seat, disconnect C.G. release cable from pulley, watch for spacer
bushing.
- Remove fixing bolts >4< and >5<.
- pull hook downward.
- Open screwed joints >1< at cable end, remove cable end and bush >6<.
4.7.2 Installation of the C.G. hook
Instalation is in reverse order, watch out especially for the following:
- Replace cable if wear is considerable, replacement of cables see section
11.6.
- Cable must be routed below tube of landing gear fork.
- For position of drive lever at circular segment and fixing bores see sketch
below.
- Insert cable end with spacer bushing>6< between shortened lever arms at
hole >1< (24.5 mm (0.965 in.) from hole >2<). Install and secure bolt >1<
and if necessary >2<.
- Connect ground cable >3< (leading to control stick) together with
forward fixing bolt >4<..
- Connect hook operating cable to pulley under seat and check function of
C.G. hook.
- For proper overcenter lock of C.G. hook, 5 mm (0.2 in) of free cable travel
at cockpit handle must be available with landing gear down and locked.
- Before installation of seat, check for foreign matter.
Caution: Wrong drive lever length, cable above tube of landing gear fork,
wrong drive lever position at segment or use of other hook fixing positions may
result in aborted takeoffs or make release impossible.
To Next Page
Loading...