-the maximum acceptable value of free movement at the outboard flap trailing edge at tracks 3 and 4 is 11.0 mm (0.4330 in.)
-for the maximum acceptable value of dimension X (free movement of the lever arm) refer to the table 601.
R 1EFF : 301-399, 1 27-54-00Page 688 1 1 May 01/05 1 1 1CES 1R **ON A/C 001-049, 101-102, 151-199, 401-499,
Subtask 27-54-00-220-058
C. Table 601 shows the maximum values for dimension X.
-------------------------------------------------------------------------------
Track Number | Dimension X (maximum)
-------------------------------------------------------------------------------
1 | 4.00 mm (0.157 in.)
2 | 1.81 mm (0.071 in.)
3 | 1.70 mm (0.067 in.)
4 | 1.42 mm (0.056 in.)
-------------------------------------------------------------------------------
Table 601
**ON A/C 051-099, 103-149, 201-299,
Subtask 27-54-00-220-058-A
C. Table 601 shows the maximum values for dimension X.
-------------------------------------------------------------------------------
Track Number | Dimension X (maximum)
-------------------------------------------------------------------------------
1 | 4.00 mm (0.157 in.)
2 | 1.51 mm (0.060 in.)
3 | 1.79 mm (0.070 in.)
4 | 1.37 mm (0.054 in.)
-------------------------------------------------------------------------------
Table 601
**ON A/C 301-399,
Subtask 27-54-00-220-058-B
C. Table 601 shows the maximum values for dimension X.
-------------------------------------------------------------------------------
Track Number | Dimension X (maximum)
-------------------------------------------------------------------------------
1 | 2.77 mm (0.109 in.)
2 | 1.64 mm (0.065 in.)
3 | 1.77 mm (0.070 in.)
4 | 1.24 mm (0.049 in.)
-------------------------------------------------------------------------------
Table 601
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
Subtask 27-54-00-220-056
D. Checks to Identify and Correct too much Free Movement at the Trailing Edge of the Flaps (Ref. Fig. 621/TASK 27-54-00-991-026)
(1)
General
(a)
The flow chart shows the process to find and correct too much free movement. Use the flow chart as a guide. Each time you make a correction, do a free movement check until the free movement is in limits.
(b)
When the free movement value is too much, do the checks that follow to identify the cause. Start at the inboard flap track 2 and then track 1. Subsequently, do the checks at the outboard flap track 3 and then track 4.
(c)
When you look for backlash, move the flap up and down 4 or 5 times to help you see the backlash or wear.
(2)
Do the steps that follow only when they are applicable:
(a) Do a general visual inspection:
1 Visually inspect the connection joints for backlash or wear
_ between the flap actuator and the flap track beam and carriage. Some of the possible causes of too much backlash in the connection joints are:
-
a bearing that has moved to an incorrect position or a bearing that cannot move
-
a loose bush
-
a damaged or missing spherical bearing liner
-worn bushes and bolts.
2_ An indication that the backlash is too much is when a
connection shows more radial or axial movement than an
equivalent adjacent component.
3_ Make sure that all components are installed correctly.
4_ Replace components that are unserviceable.
(b) If the free movement of the lever arm (dimension X) is too much, remove the unserviceable actuator and install a serviceable actuator:
1 for the flap track 1 actuator (Ref. TASK 27-54-49-000-001) and
_ (Ref. TASK 27-54-49-400-001).
2 for the flap track 2 actuator (Ref. TASK 27-54-49-000-002) and
_ (Ref. TASK 27-54-49-400-002).
3 for the flap track 3 actuator (Ref. TASK 27-54-49-000-003) and
_ (Ref. TASK 27-54-49-400-003).
4 for the flap track 4 actuator (Ref. TASK 27-54-49-000-004) and
_ (Ref. TASK 27-54-49-400-004).
(c) If you have installed a new flap actuator and the free movement of the lever arm (dimension X) is too much, do a check of the actuator lever splines:
1 Remove the applicable lever:
_
-
for the flap track 1 and 2 lever (Ref. TASK 27-54-55-000-001)
-
for the flap track 3 lever (Ref. TASK 27-54-55-000-002)
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