(2)
Do a check and make sure that the tie-rods (12) and (13) are in correct condition.
(3)
If the tie-rods and/or the vibration isolator are damaged, replace them if necessary.
(4)
Clean and examine the attachment brackets, the APU mount-bracket (11) and the structure for damage and replace if nescessary.
Subtask 49-12-53-420-051
B. Installation of the Aft Vibration Isolator
(1) Protective Treatment
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
(a) Apply SPECIAL MATERIALS (Material No. 05-002) to all the mating surfaces. Do not apply it to the bonding straps.
(2)
Install the vibration isolator (10) on the APU mount-bracket (11).
(3)
If removed install the tie-rods (12) and/or (13).
(a)
Install the bolts (21), the washers (18) and the castle nuts (19).
(b)
Tighten and TORQUE the castle nuts (19) to between to between
0.55 and 0.75 m.daN (48.67 and 66.37 lbf.in) and safety them with the new cotter pin (20).
(c)
Connect the bonding straps (15) to the bonding brackets (Ref. TASK 20-28-00-912-004).
(d)
Install the screws (16),the washers (17) and the nuts (14).
(e)
Tighten and TORQUE the nuts (14) to between to between 0.22 and
0.26 m.daN (19.46 and 23.00 lbf.in)
(4)
Install the tie-rods (12) and (13) at the vibration isolator.
(5)
Install the bolts (4) and (8), the washers (1) and (7) and the castle nuts (2) and (6).
(6)
Tighten and TORQUE the castle nuts
-
item (2) to between to between 0.55 and 0.75 m.daN (48.67 and 66.37 lbf.in)
-
item (6) to between to between 0.3 and 0.35 m.daN (26.54 and 30.97
lbf.in) and safety them with new cotter pin (3) and cotter pin (5).
(7)
Remove the PROTECTOR - THREADS, APU MOUNTING BOLTS and install the nut (9).
(8)
Tighten and TORQUE the nut (9) to between 7.7 and 8.5 m.daN (56.78 and 62.68 lbf.ft)
Subtask 49-12-53-080-051
C. Remove the APU hoist (Ref. TASK 49-00-00-080-001) Subtask 49-12-53-420-052
D. Apply a thin layer of SPECIAL MATERIALS (Material No. 05-027) to the vibration isolator (10), the tie-rod ends, the suspension structural brackets and the APU mount-bracket.
5. Close-up
________ Subtask 49-12-53-865-056
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.
Subtask 49-12-53-410-051
B. 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 49-12-53-860-052
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.
BRACKETS - APU MOUNT - REMOVAL/INSTALLATION
___________________________________________ R **ON A/C 001-003, 051-099, 401-499,
TASK 49-12-54-000-001 Removal of the APU Mount Brackets (4065KM, 4075KM, 4085KM) (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING : LOCK THE MECHANISM OF THE ACCESS DOOR 316AR WITH THE PIP PIN WHEN YOU
_______ OPEN THE ACCESS DOOR. THIS WILL PREVENT INJURY.
CAUTION : DO NOT REMOVE MORE THAN ONE APU MOUNT AT A TIME WHEN THE APU IS
_______ INSTALLED. THE APU HOIST AND THE REMAINING TWO MOUNTS MUST SUPPORT THE APU WHEN YOU REMOVE AN APU MOUNT.
NOTE : The procedure is the same for the FWD left bracket (4065KM) and the FWD
____ right bracket (4075KM).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
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