(2)
29-15-00/201, Hydraulic Systems A, B, and Standby
C. Access
(1) Location Zone
216, 217 Main Wheel Well
D. Procedure
S 862-006
(1)
Remove the system B hydraulic power (Ref 29-15-00/201).
S 862-007
(2)
Make sure these switches on the P5 panel are OFF:
(a)
HYD PUMPS B ENG 2
(b)
HYD PUMPS B ELEC 1
(c)
FLT CONTROL B
(d)
ALTERNATE FLAPS
S 862-008
(3)
Release the pressure in the system B hydraulic reservoir (Ref 29-09-00/201).
S 022-009
(4)
Remove the PTU pressure filter element (Fig. 201):
(a)
Get access to the filter in the wheel well.
(b)
Put a container below the filter to catch the hydraulic fluid.
(c)
Remove the filter bowl and the filter element from the filter head.
(d)
Remove and discard the filter element.
S 212-010
(5)
Examine the filter element and the bowl for metal contamination.
(a) If you find too much contamination, replace the PTU and flush the system B hydraulic lines.
(6)
Clean the filter bowl.
S 162-011
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29-22-21
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
PTU
HYDRAULIC SYSTEM SEE A
PTU PRESSURE FWD
FILTER MODULE SEEB C
HYDRAULIC SYSTEM
A
PTU Pressure Filter Module - Maintenance Practices
Figure 201 (Sheet 1)
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29-22-21
ALL ú ú 01 Page 202 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
FILTER HEAD
PTU PRESSURE FILTER MODULE
FILTER HEAD
PTU PRESSURE FILTER MODULE
PTU Pressure Filter Module - Maintenance Practices
Figure 201 (Sheet 2)
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29-22-21
ALL ú ú 01 Page 203 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
TASK 29-22-21-402-002
3. PTU Pressure Filter Element Installation________________________________________
A. Consumable Materials
(1)
D00567 Skydrol Assembly Lube - MCS 352
(2)
D00568 Fluid - Hydraulic, BMS 3-11
B. Access
(1) Location Zone
216, 217 Main Wheel Well
C. Procedure
S 162-012
(1)
Make sure the filter bowl is clean.
S 422-013
(2)
Install the filter element (Fig. 201):
(a)
Apply hydraulic fluid or assembly lube to the backup rings and the O-rings.
(b)
Install the O-rings and the backup rings in the filter head and the filter element.
(c)
Install the filter element in the filter bowl.
(d)
Apply hydraulic fluid or assembly lube to the threads of the filter bowl.
(e)
Install the filter bowl on the filter head.
(f)
Tighten the filter bowl to 25 |5 pound-feet.
S 712-014
(3) Do the operational test of the PTU pressure filter module.
TASK 29-22-21-002-003
4. PTU Pressure Filter Module Removal__________________________________
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