TASK 32-20-00-810-802
Vibrations Felt on the NLG during T/O and Lift Off Phases
1. Possible Causes
_______________
R - SERVO CTL-N/W STEERING (6GC)
- NLG wheel balance
- MLG wheel balance
- brake unit
- MLG side stay bottom cardan joint
- Gaps at the MLG side stay
- MLG torque links
- MLG torque link damper
- MLG torque link damper oil level
- Oil level of the MLG shock absorber
- Torque value of the upper cardan joints
- Nose gear hinge bearings
- NLG shock absorber assy
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 12-12-32-611-004 Check Fluid Level of Main Landing Gear Shock Absorber AMM 12-12-32-611-006 Replenishment of the MLG Torque Link Damper AMM 12-14-32-614-003 Check Charge Pressure of Main Landing Gear Shock
Absorber AMM 12-22-32-640-001 Lubrication of the MLG and Doors AMM 32-11-00-200-002 1. Detailed Inspection of Side Stay Bottom Cardan
Bushes 2. Measure Clearance at Side Stay Bottom Cardan Installation IAW SB 32-1086 AMM 32-11-11-200-002 Detailed Inspection of Side Stay Upper and Lower Cardan Assemblies AMM 32-11-16-400-001 Installation of the MLG Side-Stay Assembly 2505GM,
2506GM
AMM 32-11-27-200-001 Check Torque Links for Excessive Play
AMM 32-11-27-210-001 Detailed Inspection of the Torque-Link
Damper-Assemblies AMM 32-21-00-200-004 Inspection/Check of the Clearance of the Nose-Gear
Hinge Bearings
AMM 32-21-13-000-001 Removal of the NLG Shock Absorber Assy
AMM 32-21-13-400-001 Installation of the NLG Shock Absorber Assy
AMM 32-41-11-000-006 Removal of the MLG Wheel
(2649GM,2650GM,2651GM,2652GM)
AMM 32-41-11-400-006 Installation of the MLG Wheel
(2649GM,2650GM,2651GM,2652GM)
AMM 32-41-12-000-001 Removal of the NLG Wheel (2659GM,2660GM)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-20-00∞∞∞∞∞∞∞∞∞∞Page 206
Aug 01/04 CES -------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 32-41-12-400-001 Installation of the NLG Wheel (2659GM,2660GM) AMM 32-42-27-000-001 Removal of the Brake (2641GM,2642GM,2643GM,2644GM) AMM 32-42-27-400-001 Installation of the Brake
(2641GM,2642GM,2643GM,2644GM)
R AMM 32-51-51-000-001 Removal of the Nose Wheel Steering Servo-Control
R (6GC)
R AMM 32-51-51-400-001 Installation of the Nose Wheel Steering Servo-Control
R (6GC)
3. Fault Confirmation
__________________
A. Not applicable.
4. Fault Isolation
_______________
A. If you feel vibrations on the NLG during the T/O and lift off phases:
- remove the NLG wheels to do a check of the wheel balance (Ref. AMM TASK 32-41-12-000-001) and (Ref. AMM TASK 32-41-12-400-001).
(1) If the check of the NLG wheel balance is OK:
- remove the MLG wheels to do a check of the wheel balance (Ref. AMM TASK 32-41-11-000-006) and (Ref. AMM TASK 32-41-11-400-006).
(2) If the check of the MLG wheel balance is OK:
- do a check for free rotation of the four wheels of the MLG
(a) If one wheel does not turn freely
- replace the associated brake unit (Ref. AMM TASK 32-42-27-000-001) (Ref. AMM TASK 32-42-27-400-001)
(3) If the wheel rotation is OK:
- do an inspection/check of the MLG side stay bottom cardan joint (Ref. AMM TASK 32-11-00-200-002)
(a) If the inspection/check is OK:
- do an inspection/check of the Gaps at the MLG side stay (Ref. AMM TASK 32-11-11-200-002)
(4) If the inspection of the MLG side stay bottom cardan joint is OK:
- do an inspection/check of the MLG torque links for cracks or distortion (Ref. AMM TASK 32-11-27-200-001)
(a) If the inspection/check is OK:
- do a magnetic particle NDT inspection for cracks at apex lug of the MLG torque links
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊(cè) 起落架 LANDING GEAR 1(3)
