TCH.1C-27J-2-27JG
2-44.2
) (Cont'd)
D.Stepwise unload, every 50 N, up to zero load and
simultaneously read, on the comparator, the
related displacement value of the left elevator.
E.Stepwise load upwards, every 50 N, up to 250 N
maximum and simultaneously read, on the
comparator, the related displacement value of the
left elevator.
8.Put the values obtained in a diagram (refer to figure
) and draw a graph, load applied Vs
surface displacement.
9.To calculate correctly the backlash (refer to figure
diagram load applied vs surface displacement has
been drawn:
A.Draw the tangent to the highest point of the
unloading curves (U1 and U2) and of the loading
curves (L1 and L2) up to the intersection with the
surface displacement axis.
B.The backlash value C1 is the distance between the
intersection of the lines U1 and L2 read on the
surface displacement axis.
C.The backlash value C2 is the distance between the
intersection of the lines U2 and L1 read on the
surface displacement axis.
D.The total resulting backlash C is defined as the
mean value between C1 and C2.
10.Check, from the graph, that the backlash C is 1.5 mm
max (0.2
°
).
11.Remove from the left elevator trailing edge the
comparator (AGE NO. 00062).
12.Remove both hydraulic and electric power to the
aircraft.
(Cont'd)
27-30-10
2-364