(2)
Open the APU access doors 315AL, 316AR and safety them in the open position (Ref. TASK 52-41-00-010-001) .
(3)
Set the light switch 11LJ to on.
4. Procedure
_________
(Ref. Fig. 602/TASK 49-12-00-991-005)
Subtask 49-12-00-110-054
A. Cleaning
-Clean the vibration isolators and the tie-rods with a lint free cloth.
Subtask 49-12-00-210-060
B. Visual Inspection
(1) Visual inspection of the tie-rods and the bonding straps.
(a)
Look that the nuts of the bolts (1) are safetied with cotter pins and that the cotter pins are in the correct condition.
(b)
Look that the nuts (2) are safetied with the tags of the lockwashers.
(c)
Examine the bonding straps (8) for correct attachment and condition.
(d)
Examine the tie-rods (3) for damage and corrosion .
(e)
Make sure that the tie-rods and the the tie-rod attachments are not bent.
NOTE : Do the check with the straight-edges. On each tie-rod
____ assembly, you must do two checks in an angle of 90 degrees apart. On the tie-rods which hold the forward vibration isolators (4035KM and 4045KM), you must do the check with a straight-edge, 500mm (20 in.) length. On the tie-rods which hold the aft vibration isolators (4055KM), you must do the check with a straight-edge, 300 mm (12 in.) length. Move the straight-edges along the tie-rods to check the full length.
NOTE : If a component is not in correct condition, replace it.
____
-
FWD LH tie-rods and vibration isolators (Ref. TASK 49-12-51-000-002) and (Ref. TASK 49-12-51-400-002)
-
FWD RH tie-rods and vibration isolators (Ref. TASK 49-12-52-000-002) and (Ref. TASK 49-12-52-400-002).
APU Suspension
Figure 602/TASK 49-12-00-991-005
CES
-AFT tie-rods and vibration isolators (Ref. TASK 49-12-53-000-002) and (Ref. TASK 49-12-53-400-002).
(2) Inspection of the vibration isolators.
(a)
Examine the self-locking nuts (5) of the vibration isolators (4) for correct installation.
(b)
Examine the vibration isolator (4) external surfaces for damage and corrosion.
NOTE : If a component is not in correct condition, replace it.
____
-
FWD LH tie-rods and vibration isolators (Ref. TASK 49-12-51-000-002) and (Ref. TASK 49-12-51-400-002),
-
FWD RH tie-rods and vibration isolators (Ref. TASK 49-12-52-000-002) and (Ref. TASK 49-12-52-400-002),
-AFT tie-rods and vibration isolators (Ref. TASK 49-12-53-000-002) and (Ref. TASK 49-12-53-400-002).
(3) Inspection of the Mount Brackets.
(a)
Look that the bolts (6) of the APU mount brackets (7) are safetied with lockwire and the lockwire is in correct condition.
(b)
Examine the mount brackets (7) external surfaces for damage and corrosion.
NOTE : If a component is not in correct condition, replace it
____ (Ref. TASK 49-12-54-000-002) and (Ref. TASK 49-12-54-400-002).
(4) Examine the structural brackets for damage and corrosion.
5. Close-up
________ Subtask 49-12-00-410-055
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Set the light switch 11LJ to off.
(3)
Close the APU access doors 316AR, 315AL (Ref. TASK 52-41-00-410-001) .
(4)
Remove the access platform(s). Subtask 49-12-00-865-061
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.
Subtask 49-12-00-860-059
C. Aircraft Maintenance Configuration.
(1)
De-energize the ground service network (Ref. TASK 24-41-00-862-002) .
(2)
Remove the warning notice(s).
(3)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
VIBRATION ISOLATOR - FWD L (4035KM) - REMOVAL/INSTALLATION
__________________________________________________________ R **ON A/C 001-003, 051-099, 401-499,
TASK 49-12-51-000-001 Removal of the FWD LH Tie-Rods and Vibration Isolator 4035KM (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______
WHEN YOU DO THE MAINTENANCE TASK(S).
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