Aerospool WT-9 Dynamic - Permissible Plays

TECHNICAL DESCRIPTION, OPERATING, MAINTENANCE AND REPAIR MANUAL
2.4 Permissible plays
In the following table are shown the permissible plays for most important parts of the
aeroplane. These values should be not exceeded in operation.
It is expected that an operator will take steps if finds excessive plays of any other part not
listed below.
System Procedure to find a play Procedure to
remedy a play
Max.
product
play
Max.
operation
play
Ailerons control
system
Block ailerons up to the
wing and move the control
stick to the left and right to
find possible plays
Check condition of
bearings and replace
if need be
2 mm 5 mm
Elevator control
system
Block elevator up to the
stabilizer, pull and push the
control stick to find possible
plays
Check condition of
bearings and replace
if need be
2 mm 5 mm
Flaps control
system
Extend the flaps and then
handle the flap trailing edge
near the flap root, move the
trailing edge up/downward
to find possible plays
Check condition of a
an arrest of the flap
control lever in the
cockpit, check
condition of sliding
bearings stowage
and replace the
worn-out joint
bearings on the rod
ends
2 mm 5 mm
Ruder control
The system is prestressed by
means of a cylinder springs (
therefore it had not has a
possible plays ). Rudder
hinges ( stowage ) check by
the moving of the rudder
Change bearing
bushes.
Rudder
hinges
1 mm 2 mm
Wing-Fuselage
attachment
Move a wing tip to find
possible plays in wing
suspensions.
Check wing
suspensions, replace
pins
0 mm 2 mm
at wing tip
Nose wheel
Push the rear part of the
fuselage down (use a
weight) to lift the nose
wheel, then move the wheel
forward-rearward to find
possible plays.
Remove the wheel,
remove the rim and
tire and replace the
bearings bushes and
bearings.
1 mm 3 mm
Main landing gear
Jack the aeroplane or lift the
wing tip to lift a main leg,
then move the wheel
forward-rearward to find
possible plays in bearings or
leg attachment.
Check the leg
attachment, wheels
attachment, replace
the bearings, if
necessary.
1 mm 3 mm
Date: 01.03.2002 WT-9 Dynamic Section 2 Page 2 - 10