(b)
TORQUE the nut (177) to between 1.6 and 1.8 m.daN (11.79 and
13.27 lbf.ft) and safety with the new cotter pin (176).
(c)
Install the indicator pin (180), the indicator plate (181), the washers (182) and the bolts (183).
(d)
TORQUE the bolts (183) to between 0.15 and 0.17 m.daN (13.27 and
15.04 lbf.in).
(2)
At the track 2 position:
(a)
Connect the flap drive arm to the rotary actuator drive-lever with the bolt (184), the washer (185) and the nut (186).
(b)
TORQUE the nut (186) to between 14.0 and 16.0 m.daN (103.24 and
117.99 lbf.ft) and safety with a new cotter pin (187).
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F. Connect the Flap Drive Arms
(1)
At the track 3 position:
(a)
Connect the flap drive arm to the rotary actuator drive-lever with the bolt (212), the washer (213) and the nut (214).
(b)
TORQUE the nut (214) to between 7.6 and 8.5 m.daN (56.04 and
62.68 lbf.ft) and safety with a new cotter pin (215).
(2)
At the track 4 position:
(a)
Connect the flap drive arm to the rotary actuator drive-lever with the bolt (212), the washer (213) and the nut (214).
(b)
TORQUE the nut (214) to between 7.6 and 8.5 m.daN (56.04 and
62.68 lbf.ft) and safety with a new cotter pin (215).
**ON A/C 301-399,
Subtask 27-54-00-220-056-A
D. Checks to Identify and Correct too much Free Movement at the Trailing
Edge of the Flaps R (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.
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(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)
-
for the flap track 4 lever (Ref. TASK 27-54-55-000-003).
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2_ Do a check for wear of the actuator splines.
3_ Install a serviceable actuator lever:
- for the flap track 1 and 2 lever (Ref. TASK 27-54-55-400-
001)
- for the flap track 3 lever (Ref. TASK 27-54-55-400-002)
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