TCH.1C-27J-2-27JG
2-48.2 MEASUREMENT OF TRIM TABS
CONVENTIONAL PLAY (refer to figure
)
1.Fit tools balance tabs slack measurement kit (AGE
NO. 00023) to LH and RH elevators (in
correspondence of each tab central hinge), and fit a
dial gauge to each template.
2.Insert a 0.193 in (4.915 mm) (AGE NO. 00181) (9 and
11) diameter rigpin in left (10) and right (12) rear
quadrants.
3.Apply a load of 2.204 lb (1 Kg) to LH elevator outer
tab trailing edge downwards. Note the corresponding
displacement on dial gauge. Plot each one of the two
values on the related axis obtaining a positive point.
4.Repeat step 3. applying loads of 4.409, 6.613, 8.818
and 11.023 lb (2, 3, 4 and 5 kg) downwards on LH
elevator trim tab trailing edge noting the related tab
displacements. Obtain consequently four other
positive points.
5.Repeat steps 3. and 4. applying loads upwards in
order to obtain five negative points.
6.Join positive points, then negative points in order to
obtain points 0+ and 0ˉ on the axis.
7.The distance between points 0+ and 0- (LH elevator
trim tab conventional play) must not exceed 0.062 in
(1.6 mm).
8.Repeat steps 3. thru 7. for RH elevator trim tab:
results must be the same.
9.Remove devices mentioned in steps 1. and 2.
FOLLOW ON MAINTENANCE:
None
27-30-10
2-384