PIK-20 E Service manual
4.3 Sailplane maintenance
4.3.1 Before assembly
Clean and grease fittings marked with "x" in the Fig. 4.2.
4.3.2 Weekly inspection
Clean the cabin and wheel box eg. with a vacuum cleaner.
4.3.3 Monthly inspection
— Make a careful daily check.
— Inspect the cockpit and sailplane construction, specially the belly,
wheel house doors, skin and bulkhead bondings.
— Check the play, function and friction of all control systems.
— Inspect the control mechanisms and attachments in the central fuse
lage.
— Inspect the water tanks and assure that there is no water in the
wings.
— Clean and grease the tail wheel.
— Sign the -monthly check in the log book.
4.3.4 Annual inspection and maintenance
— Inspect the composite constructions of the sailplane.
— Inspect carefully the bondings for cracks and cracks in the paint. The
cracks in the paint may be marks of defects in the structure.
— Clean and lubricate bearings and hinges marked with "o" or "x" in
Figure 4.2 with grease and check the play (max 0.1 mm) in hinges,
bearings and rod ends.
— Protect the flap and aileron hinge pins with lithium base grease.
— Clean and lubricate the fittings marked with "x" in Figure 4.2 and
check the play (max 0.1 mm).
Most of the items which needs greasing have lubrication holes. They
can be lubricated with a greasing press without removing the item.
Grease containing molybdenium sulphite is recommended. All the
rod ends and the main part of the bearing bushings are lined with PTFE
or acetal and need no lubrication. Other lubricate than lithium base gre
ase must not be used in PTFE or acetal lined bearings.
eiri
ky
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Kisällinkatu 8
SF-15170 Lahti 17
page 11-26
