- replace the BSCU (10GG) (Ref. AMM TASK 32-42-34-000-001) (Ref. AMM TASK 32-42-34-400-001).
(b) If the fault continues:
- do a check for a ground signal at pin A/A3 of the AUTO BRK/MAX pushbutton switch (6GG) (Ref. ASM 32-42/03).
1 If there is a ground signal:
_
- repair the wiring from the AUTO BRK/MAX pushbutton switch (6GG) pin A/A3 to the ground terminal (Ref. ASM 32-42/03).
- do a check and repair the wiring from the AUTO BRK/MAX pushbutton switch (6GG) to the BSCU (10GG) pin A/A1 to pin AA/13E (Ref. ASM 32-42/03).
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TASK 32-42-00-810-912
Brake Grabbing Felt at Pedal Operation
1. Possible Causes
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- DRIVE ASSY-TACHOMETER,WHEEL 4 (2678GM)
- DRIVE ASSY-TACHOMETER,WHEEL 3 (2679GM)
- DRIVE ASSY-TACHOMETER,WHEEL 2 (2680GM)
- DRIVE ASSY-TACHOMETER,WHEEL 1 (2681GM)
- TACHOMETER-WHEEL 1 (19GG)
- TACHOMETER-WHEEL 3 (20GG)
- TACHOMETER-WHEEL 2 (21GG)
- TACHOMETER-WHEEL 4 (22GG)
- SERVOVALVE-NORM BRK WHEEL 1 (15GG)
- SERVOVALVE-NORM BRK WHEEL 3 (16GG)
- SERVOVALVE-NORM BRK WHEEL 2 (17GG)
- SERVOVALVE-NORM BRK, WHEEL 4 (18GG)
- BRAKE-WHEEL 2 (2641GM)
- BRAKE-WHEEL 4 (2642GM)
- BRAKE-WHEEL 1 (2643GM)
- BRAKE-WHEEL 3 (2644GM)
- bleeding of the related braking system
- bleeding of the control system of the alternate braking with A/SKID
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-42-00-710-004 Operational Test of the Automatic Braking when the
Landing Gear is retracted AMM 32-42-00-870-001 Bleeding of the Normal Braking at the Brake Units AMM 32-42-27-000-001 Removal of the Brake (2641GM,2642GM,2643GM,2644GM) AMM 32-42-27-210-001 Inspection/Check of the Brake with the Wheel
R Installed AMM 32-42-27-400-001 Installation of the Brake
(2641GM,2642GM,2643GM,2644GM) AMM 32-42-48-000-001 Removal of the Normal Brake Servovalve AMM 32-42-48-400-001 Installation of the Normal Brake Servovalve AMM 32-42-57-000-001 Removal of the Tachometer AMM 32-42-57-400-001 Installation of the Tachometer AMM 32-42-68-000-003 Removal of the MLG Tachometer-Drive AMM 32-42-68-400-003 Installation of the MLG Tachometer-Drive AMM 32-43-00-612-001 Filling and bleeding of the Low Pressure Control
System of the Alternate Braking
AMM 32-43-00-870-002 Bleeding of the High Pressure Alternate Braking
System
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Feb 01/04 CES
3. Fault Confirmation
__________________
A. Test
Not applicable
4. Fault Isolation
_______________
A. If you feel brake grabbing when you operate the pedals:
(1) Do a reset of the BSCU with the A/SKID & NOSE WHEEL switch (5GG).
NOTE : If the fault appears just after the replacement of a
____ Normal-brake servovalve , do the operational test of the automatic braking when the landing gear is retracted to do a reset of the EEPROM of the BSCU (Ref. AMM TASK 32-42-00-710-004).
(2) If the fault continues:
- do an inspection/check of the brake (Ref. AMM TASK 32-42-27-210-001).
(a) If you find defect on the brake unit:
- replace the BRAKE-WHEEL 2 (2641GM) or BRAKE-WHEEL 4 (2642GM) or BRAKE-WHEEL 1 (2643GM) or BRAKE-WHEEL 3 (2644GM) (Ref. AMM TASK 32-42-27-000-001) and (Ref. AMM TASK 32-42-27-400-001).
(b) If you find no defect:
- do a bleeding of the related braking system (Ref. AMM TASK 32-42-00-870-001) or (Ref. AMM TASK 32-43-00-870-002).
(3) If the fault continues:
- do a bleeding of the control system of the alternate braking with A/SKID (Ref. AMM TASK 32-43-00-612-001).
(4) If the fault continues:
- do a check of the related tachometer drives for damage
(a) If you find damage on one or more tachometer drives:
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本文链接地址：A320 Trouble Shooting Manual 排故手册 起落架 LANDING GEAR 2(11)
