29-15-71
 ALL  ú ú 01 Page 203 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 3) PRESS IND SYS A
 4) PRESS IND SYS B

 S 712-116
 (14) Do an operational check of the system A pressure module:
 (a)  
Make sure the ENG 1 HYD PUMPS switch, on the P5 panel, is ON.

 (b)  
Make sure the ELEC 2 HYD PUMPS switch, on the P5 panel, is OFF.

 (c)  
Make sure the ENG 1 and ELEC 2 LOW PRESSURE lights, on the P5 panel, are on.

 (d)  
Motor the engine No. 1 to pressurize hydraulic system A (AMM 29-15-00/201).

 (e)  
Make sure the ENG 1 LOW PRESSURE light goes off.

 (f)  
Make sure the ELEC 2 LOW PRESSURE light stays on.

 (g)  
Stop the engine No. 1.

 (h)  
Operate the rudder until the ENG 1 LOW PRESSURE light comes on.

 (i)  
Put the ELEC 2 HYD PUMPS switch to ON.

 (j)  
Make sure the ELEC 2 LOW PRESSURE light goes off.

 (k)  
Make sure the ENG 1 LOW PRESSURE light stays on.

 (l)  
Examine the module and the connections for leaks.

 (m)  
Put the ELEC 2 HYD PUMPS switch to OFF.

 (n)  
Make sure the ELEC 2 LOW PRESSURE light comes on.

 S 712-117
 (15)
 Do an operational check of system B pressure module:

 (a)  
Make sure the ENG 2 HYD PUMPS switch, on the P5 panel, is ON.

 (b)  
Make sure the ELEC 1 HYD PUMPS switch, on the P5 panel, is OFF.

 (c)  
Make sure the ENG 2 and ELEC 1 LOW PRESSURE lights are on.

 (d)  
Motor the engine No. 2 to pressurize hydraulic system B (AMM 29-15-00/201).

 (e)  
Make sure the ENG 2 LOW PRESSURE light goes off.

 (f)  
Make sure the ELEC 1 LOW PRESSURE light stays on.

 (g)  
Stop the engine No. 2.

 (h)  
Operate the rudder until ENG 2 LOW PRESSURE light comes on.

 (i)  
Put the ELEC 1 HYD PUMPS switch to ON.

 (j)  
Make sure the ELEC 1 LOW PRESSURE light goes off.

 (k)  
Make sure the ENG 2 LOW PRESSURE light stays on.

 (l)  
Examine the module and the connections for leaks.

 (m)  
Put the ELEC 1 HYD PUMPS switch to OFF.

 (n)  
Make sure the ELEC 1 LOW PRESSURE light comes on.

 (16)
 Do the servicing for the hydraulic reservoir (AMM 12-12-00/301).

 (17)
 Remove electrical power (AMM 24-22-00/201).

 S 612-118
 S 862-119
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 29-15-71
 ALL  ú ú 01 Page 204 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 TASK 29-15-71-002-078
 4.  Pressure Filter Removal (Fig. 201)_______________________
 A. Consumable Materials
 (1)  
D00567 Skydrol Assembly Lube - MCS 352

 (2)  
D00568 Fluid - Hydraulic, BMS 3-11

 B. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 29-15-00/201, Hydraulic Systems A, B and Standby

 (3)  
AMM 29-15-11/401, Hydraulic Systems A and B Engine-Driven Pump

 (4)  
AMM 29-15-22/401, Hydraulic Systems A and B Electric Motor-Driven Pump

 (5)  
AMM 29-15-27/401, Hydraulic Systems A and B EMDP Acoustic Filter

 C. Access
 (1)  Location Zone
 216 Main Wheel Well, LH
 217 Main Wheel Well, RH

 D. Procedure
 S 862-068
 (1)  
Remove power from the applicable hydraulic system
 (AMM 29-15-00/201).

 S 022-112

 (2)  
Remove the filter bowl.

 S 022-111

 (3)  
Remove the filter element.

 (4)  
Clean the filter bowl.

 (5)  
Discard the O-rings.

 S 212-071

 (6)  
Examine the filter element for metal contamination.

 (a)  
　
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