SECTION 3.
TECHNICAL SPECIFICATION,
TOLERANCES AND ADJUSTMENT
TECHNICAL SERVICE MANUAL
SZD-54-2
„Perkoz”
page 3.2
Allstar PZL Glider Sp. z o.o.
Doc No. 542.4.02
Issue II
April 2014
Revision
corrected
3.4. Allowable backlashes and tolerances in mounting connections
and sailplane control systems
3.4.1.
Allowable control stick play
Maximum allowable control stick play
, measured at stick’s top when control
surfaces are blocked:
- in elevator control system:
±
0,08
”
- in aileron control system:
±
0,08
”
If it is found that self-aligning bearing is the cause of excessive control system
play, it should be replaced together with a part in which it is mounted.
3.4.2.
Backlashes in the connections of torsional tubes with drivers in
aileron and airbrake control systems
If excessive backlash is found in connections of torsional tubes with drivers in
aileron and airbrake control systems, drivers’ pegs in latch pins (7) and (8) Fig. 2‒1.
should be replaced with oversize ones (standard oversizes: 0,2441
-0,0012
;
0,2520
-0,0012
; 0,2598
-0,0012
in) and if necessary grind slots in torsional tubes endings
(5) and (6) Fig. 2
‒1., individually matching the dimension (a) Fig. 3‒1. with backlash
+0,002”
for every oversize.
Fig. 3-1. Driver connection scheme
