Grob ASTIR CS 77 User Manual

MAINTENANCE AND SERVICING
Take great care over the surface finish of the glider. All contaminants such as dust,
grass seed, insect debris, etc. should
be washed off with lukewarm water and a
sponge.
In the case of strong contamination, a mild cleaning agent can be added to the
water. Do not use silicone-containing products
on the gel coat. Scratches should be
carefully tillered and the finish made good.
Wetness and Humidity
The glider is not sensitive to, but if possible it should be protected from , wetness and
high humidity. Remove any water penetration
by dry storage of the disassembled
components. Turn the components over frequently.
Cleaning the canopy
Clean the canopy with 'Plexiklar' or a similar cleaning polishing agent approved for use
on Plexiglas. If necessary wash the canopy with lukewarm water. Use either a chamois
leather or other approved material. NEVER rub Plexiglas with a dry
cloth.
The safety belts
The seat belts should be examined regularly for any signs of damage and wear. The
metal parts of the harness should
be checked for corrosion.
The cable releases
The 'winch hook' is exposed to strong contamination due to its location in the wheel
housing. It must be examined for signs of damage, cleaned and lubricated regularly.
Remove the seat
pan to facilitate the inspection of the winch hook. To remove the
winch hook disconnect the cable from the
bellcrank and remove the two fixing bolts.
For a complete overhaul, the hooks should
be sent to the manufacturer Richard Tost.
In all other respects, the manufacturer's mandatory service instructions for the release
hook applies.
It is to be noted that during the annual inspection the operating cable for the nose hook
must
be checked for wear.
The tyre pressure
The tyre pressure of the main wheel is 2.5 atmospheres (2 . 53 Bar, 37psi).
The wheel brake
The wheel brake is a drum brake. The bowden cable operating the brake should be aft
of the main undercarriage leg. The bowden
cable mounting plate on the drum can be
adjusted to achieve this positioning.
Main Wheel removal
Before dis-assembling the main wheel for cleaning, lubrication, or a tyre change,
remove the bowden
cable from the brake lever. Remove the split pin from the M6
castellated nut on the end of the axle and slacken the nut. Remove the brake lever
retaining screw. Slide the wheel down and out. Clean all parts and coat with grease
before assembly.
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Grob ASTIR CS 77 Specifications

General

Brand	Grob
Model	ASTIR CS 77
Category	Aircrafts
Language	English