S 866-060
 (14)
 Remove hydraulic power from system B (AMM 29-15-00/201). S 866-061

 (15)
 Close the No. 4, No. 5, and No. 6 isolation valves. S 496-062

 (16)
 Connect the equipment that is necessary to measure the flow to hydraulic system A.

 S 866-063 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES. THE AILERONS, RUDDER, ELEVATOR, FLAPS, SLATS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN MOVE QUICKLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (17)
 Supply hydraulic power to system A. S 216-064

 (18)
 Make sure the pressure in system A is a minimum of 2800 psi. S 976-254

 (19)
 If you use the ammeter or amp-clamp method do this step: NOTE: This amperage is the System A Basic Current, and must

____ be subtracted from all other system A 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 A Basic Current) Flow _______________ cc/minute (Value 8)
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 29-00-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 976-255
 (20) If you use the flow meter method, read the flow value and write it here:
 Flow _______________ cc/minute (Value 8)
 S 796-066
 (21) Do these steps to find the null leakage for spoilers No. 3 and No. 6:
 (a)  Put the SPOILER A switch in the ON position.
 NOTE:____ Keep the speed brake lever half the distance between the
 ARMED and the FLIGHT DETENT positions.
 (b)  Read the amperage or the flow value and write it here:
 Amperage _______________(Subtract System A Basic Current First)
 Flow _______________ cc/minute (Value 9)
 (c)  Subtract the Value 8 flow from the Value 9 flow.  The
 difference must be less than 4000 cc/minute.

 S 796-067
 (22) Do these steps to find the leakage for the aileron PCU:
 (a)
Put the FLT CONTROLS A switch in the ON position.

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

 Amperage _______________(Subtract System A Basic Current First)
 Flow _______________ cc/minute (Value 10)
 (c)  Subtract the Value 9 flow from the Value 10 flow. The difference must be less than 3000 cc/minute.
 S 796-068
 (23) Do these steps to find the leakage for the elevator PCU.
 (a)  
Open the No. 3 isolation valve (in the tail compartment).

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

 Amperage _______________(Subtract System A Basic Current First)
 Flow _______________ cc/minute (Value 11)
 (c)  Subtract the Value 10 flow from the Value 11 flow. The difference must be less than 3000 cc/minute.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 29-00-00
 ALL  ú ú 02 Page 623 ú Mar 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 796-069
 (24) Do these steps to find the leakage for the rudder power control unit:
 (a) (b)  Open the No. 2 isolation valve (in the tail compartment).Read the amperage or the flow value and write it here:
 Amperage _______________(Subtract System A Basic Current First)
 Flow _______________ cc/minute (Value 12)
 (c)  Subtract the Value 11 flow from the Value 12 flow. difference must be less than 3000 cc/minute. The

 S 796-070
 (25) Do these steps to find the leakage for the feel computer and the feel cylinders for the elevator:
 (a)  
Open the No. 1 isolation valve (in the tail compartment).

 (b)  
　
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