F87184
Check Valve Installation 500
29-11-101Page 402 Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Nov 15/67
SYSTEM A HYDRAULIC RETURN FILTER - UNIT SERVICING
1. General
A. A container will be necessary to catch fluid drained from filter and disconnected lines. Should any fluid spill on the airplane, decontaminate the area (Ref Chapter 12, Cleaning and Washing).
2. Equipment and Materials
A. Skydrol Assembly Lube - MCS 352 or Fire Resistant Hydraulic Fluid - BMS\3-11 (Ref 20-30-21)
3. Replace Hydraulic Return Filter Elements
A. Remove Return Filter Elements (Fig. 301)
(1)
Depressurize hydraulic system A (Ref 29-11-0 MP).
(2)
Depressurize system A hydraulic reservoir (Ref 29-09-300 MP).
(3)
Remove locknut from coupling band.
(4)
Remove filter bowl.
(5)
Remove filter element and discard element.
(6)
Clean filter bowl thoroughly.
B. Install Return Filter Elements (Fig. 301)
(1)
Install O-rings as shown. Lubricate with assembly lube or hydraulic fluid.
(2)
Place filter element in filter bowl.
(3)
Insert filter bowl into filter head.
(4)
Secure coupling band around filter bowl and filter head. Tighten locknut to 48-60 pound-inches torque.
(a)
Aircract Porus Media, 120-144 lb. In.
(b)
Purolator, 60-70 lb. In.
(5)
Depress differential pressure indicator(s) if required.
(6)
Pressurize hydraulic reservoirs (Ref 29-09-300 MP).
(7)
Pressurize hydraulic system A (Ref 29-11-0 MP).
(8)
Check return filter for leaks.
(9)
Service hydraulic reservoir (Ref Chapter 12, Hydraulic Fluid Servicing).
559
Feb 15/80 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 29-11-111 Page 301
F87051
System A Hydraulic Return Filter Servicing 559
29-11-111 Figure 301 Aug 15/76
Page 302
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
SYSTEM A HYDRAULIC RETURN FILTER - REMOVAL/INSTALLATION
1. General
A. A container will be necessary to catch fluid drained from filter and disconnected lines. Should any fluid spill on the airplane, decontaminate the area. Refer to Chapter 12, Cleaning and Washing.
2. Equipment and Materials
A. Skydrol Assembly Lube - MCS 352 or Fire Resistant Hydraulic Fluid - BMS\3-11
3. Remove Return Filter
A. Depressurize hydraulic system A (Ref 29-11-0 MP).
B. Depressurize system A hydraulic reservoir (Ref 29-09-300 MP).
C. Disconnect hydraulic lines from filter and plug lines (Fig. 401).
D. Unscrew mounting bolts from support bracket and remove return filter.
Install Return Filter
A. Lubricate 0-rings and threaded fittings with assembly lube or hydraulic fluid.
B. Install union and O-ring in ports 1 and 3, and in case drain line port (Fig. 401).
C. Deleted
D. Place return filter in mounting position and install mounting bolts in support bracket.
E. Remove plug from lines and connect hydraulic lines.
F. Pressurize hydraulic reservoirs (Ref 29-09-300 MP).
G. Pressurize hydraulic system A (Ref 29-11-0 MP).
H Check return filter for leaks.
I. Service hydraulic reservoir (Ref Chapter 12, Hydraulic Fluid Servicing).
500
Jun 20/85 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 29-11-111 Page 401
F87150
System A Hydraulic Return Filter Installation 559
29-11-111 Figure 401 Aug 15/76
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