B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 Pre-conditioning through the LP Ground Connection 27-41-00-820-002 Adjustment of the THS Control-Cables Length CFM Cable Fabrication Man 27-41-00-991-006 Fig. 505 27-41-00-991-008 Fig. 506 27-41-00-991-012 Fig. 507 27-41-00-991-013 Fig. 508
3. Job Set-up
__________ Subtask 27-41-00-010-061
A. Get Access
(1)
Make sure that the access platforms are in position at the cargo compartment doors 825 and 826.
(2)
Make sure that the cargo compartment doors 825 and 826 are open.
(3)
In the zone 241, make sure that the floor panels 241FF and 241BF are removed.
(4) In the zone 131, make sure that the partition panel 131PW is removed. Subtask 27-41-00-860-064
B. Aircraft Maintenance Configuration NOTE : Let the temperature in the aircraft become stable for three hours
____
before you start this procedure.
(1)
Make sure that the air conditioning system does not operate (Ref. TASK 12-33-21-618-001).
(2)
Make sure that there is no neon light on, near the cable, in the cable routing zone.
(3)
Make sure that the pitch-trim control wheels are in the '0' position.
(4)
Put a warning notice in position in the cockpit to tell persons not to operate the pitch trim.
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(5)
Make sure that the PIN - RIGGING (0U190360) (5) is in position on the mechanical input of the THS actuator (1).
(6)
Make sure that the RIGGING PIN - THS MECHANICAL CONTROL (98D27407532000) (11) is in position on the tension regulator (2).
4. Procedure
_________ (Ref. Fig. 505/TASK 27-41-00-991-006, 506/TASK 27-41-00-991-008, 507/TASK 27-41-00-991-012, 508/TASK 27-41-00-991-013) Subtask 27-41-00-220-062
A. Measurement
(1) Measure the cable zone temperature and the external temperature with a thermometer. Make sure that the temperature is the same at plus or minus 2 DEG.C (plus or minus 3.60 DEG.F).
Subtask 27-41-00-820-053
B. Shortening of the THS Control Cables
(1)
Adjust the two turnbuckles to the dimension 'C' = 30 mm (1.18 in.).
(2)
Find the correct value to cut the cables.
NOTE : Cut the two rear cables by the same value.
____
(a)
Use the adjustment graph to find the position of the index of the tension regulator (2) in relation to the ambient temperature.
(b)
Put marks on the two cables where the cable routing is straight and near the structure.
(c)
In the fuselage between two static fairleads, pull the two cables at the same time until the index of the tension regulator is at the position found on the graph.
NOTE : Pull the cables down to get the necessary force, and
____ measure the cable travel 'Y' along the aircraft axis.
(d) Measure with the marks (on the cables and on the structure) the cable travel 'Y' on each cable to get the necessary cable length.
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THS Cable Turnbuckles Figure 507/TASK 27-41-00-991-012
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R Cable Travel 'Y' Figure 508/TASK 27-41-00-991-013
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R R (e) For each cable side, subtract 35 mm (1.3779 in.) from the value measured before.
R R R NOTE : 35 mm (1.3779 in.) is the cable penetration into the____ terminal stud of one turnbuckle.
R R R R R (f) The value 'X' (to cut the cable) = 'Y' (cable travel) - 35 mm (1.3779 in.). Example: Measured cable travel 'Y' for each cable = 110 mm (4.33 in.) Cable penetration into the terminal stud = 35 mm (1.38 in.) Value 'X' to cut the cable = 110 mm - 35 mm = 75 mm (4.33 in. - 1.38 in. = 2.95 in.)
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