(2)
Apply a thin layer of STORAGE PRESERVATION (Material No. 15-005) to the subsequent areas and components:
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)
The brackets and the tie-rod ends on the top firewall of the APU compartment.
(b)
The APU mount brackets and the vibration isolators.
(c)
Tie rods and brackets of the APU bleed-air duct.
(d)
The bolts of the V-clamps attaching the bleed air duct to the APU.
(e)
The brackets of the fire sensing elements.
(f)
The door hinges of the LH and RH APU access doors.
(3)
Make sure that the work area is clean and clear of tool(s) and other items.
(4)
Set the light switch 11LJ to the off position.
(5)
Close the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-410-001).
(6)
Remove the access platform(s). Subtask 49-11-11-865-070
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD.
Subtask 49-11-11-860-058
C. Put the aircraft back to its initial 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.
APU MOUNTS - DESCRIPTION AND OPERATION
______________________________________
R **ON A/C 001-003, 051-099, 401-499,
1. General
_______ The APU is positioned in the tailcone structure by 7 suspension rods. These are attached to one bracket each on the roof of the APU compartment between FR80 and FR83. Three vibration isolators, installed between the suspension rods and the APU, reduce the transmission of vibration and shocks from the APU to the aircraft structure and vice versa. Brackets attach the vibration isolators to the APU.
The entire suspension system is designed to withstand all vibration, shocks, inertia and air loads within the defined operational limits. All components of the suspension system are fireproof with the exception of the vibration isolator elastomer components.
2. Component Location
__________________
(Ref. Fig. 001)
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA
| | | | DOOR | REF. -------------------------------------------------------------------------------4035KM LEFT FWD VIBRATION ISOLATOR 315 315AL/ 49-12-51 4045KM RIGHT FWD VIBRATION ISOLATOR 316 316AR/ 49-12-52 4055KM AFT VIBRATION ISOLATOR 315/ 315AL/ 49-12-53
316 316AR 4065KM LEFT FWD APU MOUNT BRACKET 315 315AL/ 49-12-54 4075KM RIGHT FWD APU MOUNT BRACKET 316 316AR/ 49-12-54 4085KM AFT APU MOUNT BRACKET 315/ 315AL/ 49-12-54
316 316AR
APU Suspension System - Component Location Figure 001 (SHEET 1)
R EFF : 001-003, 051-099, 401-499, 49-12-00Page 2 Config-1 Aug 01/05
CES
APU Suspension System - Component Location Figure 001 (SHEET 2)
R EFF : 001-003, 051-099, 401-499, 49-12-00Page 3 Config-1 Aug 01/05
CES
3. System Description__________________ (Ref. Fig. 001)
A. Suspension System Capabilities
-
The suspension system is designed 'fail-safe' with respect to the failure of any one of the 7 suspension rods or their respective structure attachment bracket or vibration isolator housing lug or clevis.
-
The left forward vibration isolator is supported by 3 suspension rods (2 lug/clevis and one eyebolt/clevis joints) and is thus fixed in space. The right forward vibration isolator is supported by 2 rods (one lug/clevis and one eyebolt/clevis joint) such, that movement in the y-direction is possible. The aft mount is designed similarly, but allowing movement in the x-direction. This design approach permits production and installation tolerances in the APU as well as the suspension system to be washed out.
-
The metallic components of the 3 APU mounts (one each vibration isolator and APU attachment bracket) are designed 'safe-life'.
-
All other APU system interfaces are flexible to permit translational movement and rotational displacement of the APU in all directions. The actual APU movement occurring during APU and/or A/C-operation is much lower than the design limits. Only negligible loads are therefore transferred through these interfaces.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM 机载辅助动力 AIRBORNE AUXILIARY POWER2(65)
