- 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).
「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page A203
Feb 01/04R CES
TASK 32-42-00-810-912
Brake Grabbing Felt at Pedal Operation
1. Possible Causes
_______________
- 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
「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 ∞∞32-42-00∞∞∞∞∞∞∞∞∞∞Page A204
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:
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 起落架 LANDING GEAR 2(11)
