(2)
 In the cockpit, on the triple indicator 60GG on the panel 400VU, make sure that the brake yellow pressure indicator is pressurized (the indicator pointer is in the green range).If necessary pressurize the brake accumulator:

 (a)
 Pressurize the Yellow hydraulic system (Ref. TASK 29-10-00-863-002).

 (b)
 On the triple indicator 60GG on the panel 400VU, make sure that the pressure increase (the indicator pointer is in the green range)

 (c)
 Depressurize the Yellow hydraulic system (Ref. TASK 29-10-00-864-002).

 Subtask 32-42-27-941-056
 B. Safety Precautions
 (1)
 Put the warning notices in the cockpit, to tell persons not to operate the landing gear or the wheel brakes.

 (2)
 Make sure that the wheel chocks are in position.

 (3)
 Set the parking brake to the OFF position.

 (4)
 On the panel 110VU, make sure that the parking brake control switch 73GG is set to ON.

 1EFF : ALL 1 32-42-27Page 610 1 1 May 01/04 1 1 1CES 1 1EFF : ALL 1 32-42-27Page 611 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,

 Subtask 32-42-27-865-053
 C. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R  **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R  49VU L/G/Y BRK/PRESS/IND  61GG  C10 
R  **ON A/C 401-499, 
R R  49VU ABCU &/Y BRK/PRESS IND **ON A/C ALL  61GG  C10 
R R R  121VU HYDRAULIC/PARK BRK/CTL/STBY 121VU HYDRAULIC/PARK BRK/CTL/NORM 4. Procedure_________ **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499, 71GG 70GG  N37 N36
 (Ref. Fig. 601/TASK 32-42-27-991-002-A) **ON A/C 301-399,
 (Ref. Fig. 601A/TASK 32-42-27-991-002-B)

 Subtask 32-42-27-210-056-A
 A. Inspection of the Brake
 (1) With the parking brake on, make sure that the wear indicators are in the limits.
 NOTE : When the end of either wear pin touches the machined surface
____
 of the piston housing:

 -the heat pack is fully worn and you must replace the brake (Ref. TASK 32-42-27-000-001).
 NOTE : For a new brake:
____
 -Measure the distance between the end of the wear pin and the machined surface of the piston housing. This distance must be 50 mm (1.97 in) maximum. If more than the maximun value replace the brake (Ref. TASK 32-42-27-000-001) (Ref. TASK 32-42-27-400-001).
 NOTE : The brake units usually have two wear pins.
____ If you find a brake that does not have the two wear pins: -the brake is serviceable if there is one wear pin and the wear pin is in the limits. -you must deactivate the brake if there is no wear pin (Ref. TASK 32-42-00-040-002).
 (2) Make sure that there are no leaks on:
 -
the piston housing,

 -
the pistons,

 -
the hydraulic lines.

 **ON A/C 301-399,
 Subtask 32-42-27-210-056-B
 A. Inspection of the Brake
 (1) With the parking brake on, make sure that the wear indicators are in the limits.
 NOTE : When the end of either wear pin touches the machined surface
____
 of the piston housing:

 1EFF : ALL 1 32-42-27Page 612 1 1 Aug 01/05 1 1 1CES 1

 -the heat pack is fully worn and you must replace the brake (Ref. TASK 32-42-27-000-001).
 NOTE : For a new brake:
____
 -Measure the distance between the end of the wear pin and the machined surface of the piston housing. This distance must be 61 mm (2.40 in.) maximum. If more than the maximun value replace the brake (Ref. TASK 32-42-27-000-001) (Ref. TASK 32-42-27-400-001).
 NOTE : The brake units usually have two wear pins.
____ If you find a brake that does not have the two wear pins: -the brake is serviceable if there is one wear pin and the wear pin is in the limits. -you must deactivate the brake if there is no wear pin (Ref. TASK 32-42-00-040-002).
 (2) Make sure that there are no leaks on:
 -
the piston housing,

 -
the pistons,

 -
the hydraulic lines.

 **ON A/C ALL
 5. Close-up
________
 Subtask 32-42-27-860-056
 A. Put the aircraft back to its initial configuration.
 (1) De-energize the Ground Service Network Supplied from the External Power (Ref. TASK 24-42-00-862-001)
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320飛機維護手冊 AMM LANDING GEAR 起落架7(22)