737-300 400 500 AMM 飞机维护手册 液压 HYDRAULIC POWER(21)

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 ALL  ú ú 01 Page 619 ú Mar 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (6)  S 976-245If you use the ammeter or amp-clamp method do this step:
 NOTE:____ This amperage is the System B Basic Current, and must be subtracted from all other system B amperage readings before you use Fig. 603 to find the equivalent flow.
 (a)  Read the amperage and write it here:
 NOTE:____ Write down a flow value of zero.
 Amperage _______________ (System B Basic Current)
 Flow _______________ cc/minute (Value 1)
 (7)  S 976-246If you use the flow meter method, read the flow value and write it here:
 Flow _______________ cc/minute (Value 1)
 (8)  S 796-054Do these steps to find the leakage of the control valve for the trailing edge (TE) flaps: (a) Put the arm switch for the ALTERNATE FLAPS in the OFF position.
 NOTE:____ The flaps will move to 40 units.
 (b) (c)  Set the flap control lever to 25 units, and let the flaps move.Read the amperage or the flow value and write it here:
 Amperage _______________(Subtract System B Basic Current First)
 Flow _______________ cc/minute (Value 2)
 (d)  Subtract the Value 1 flow from the Value 2 flow. difference must be less than 8000 cc/minute. The
 (9)  S 796-055Do these steps to find the null leakage for spoilers No. 2 and No. 7: (a) Put the SPOILER B switch in the ON position. (b) Put the speed brake lever half the distance between the ARMED and the FLIGHT DETENT positions.

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 ALL  ú ú 02 Page 620 ú Mar 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (c)  Read the amperage or the flow value and write it here:
 Amperage _______________(Subtract System B Basic Current First)
 Flow _______________ cc/min (Value 3)
 (d)  Subtract the Value 2 flow from the Value 3 flow. difference must be less than 4000 cc/minute. The

 S 796-056
 (10) Do these steps to find the leakage for the aileron power control unit:
 (a)  
Put the FLT CONTROLS B switch in the ON position.

 (b)  
Read the amperage or the flow value and write it here:

 Amperage _______________(Subtract System B Basic Current First)
 Flow _______________ cc/minute (Value 4)
 (c)  Subtract the Value 3 flow from the Value 4 flow. The difference must be less than 3000 cc/minute.
 S 796-057
 (11) Do these steps to find the leakage for the elevator power control unit and the tab lock cylinder:
 (a)  
Open the No. 6 isolation valve (in the tail compartment).

 (b)  
Read the amperage or the flow value and write it here:

 Amperage _______________(Subtract System B Basic Current First)
 Flow _______________ cc/minute (Value 5)
 (c)  Subtract the Value 4 flow from the Value 5 flow. The difference must be less than 3000 cc/min.
 S 796-058
 (12) Do these steps to find the leakage for the rudder power control unit:
 (a)  
Open the No. 5 isolation valve (in the tail compartment).

 (b)  
Read the amperage or the flow value and write it here:

 Amperage _______________(Subtract System B Basic Current First)
 Flow _______________ cc/minute (Value 6)
 (c)  Subtract the Value 5 flow from the Value 6 flow. The difference must be less than 3000 cc/minute.
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 29-00-00
 ALL  ú ú 02 Page 621 ú Mar 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 796-059
 (13) Do these steps to find the leakage for the feel computer and the feel cylinders for the elevator:
 (a) (b)  Open the No. 4 isolation valve (in the tail compartment).Read the amperage or the flow value and write it here:
 Amperage _______________(Subtract System B Basic Current First)
　
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