(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
IPC 32-53-51 Fig. 1
B.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
C.
Prepare for Removal
S 494-002
(1) Make sure that you install the ground locks of the landing gear (AMM 09-11-00/201).
S 494-003
WARNING: REFER TO AMM 32-00-30/201 FOR THE LOCK INSTALLATION PROCEDURE.
_______ THE FAST MOVEMENT OF THE DOORS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT IF YOU DO NOT CORRECTLY INSTALL THE LOCKS.
(2)
Install the door locks of the wheel well door of the wing and body gear (AMM 32-00-30/201).
(3)
Remove the hydraulic power of system No. 1 (AMM 29-11-00/201).
S 864-004
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A
747-400 MAINTENANCE MANUAL
D. Remove the Check Valve (Fig. 401)
S 024-005
(1)
Remove the check valve from the steering module the body gear.
(a)
Disconnect the return line from the check valve.
(b)
Remove the check valve from the module assembly and discard the O-ring and the packings.
TASK 32-53-14-404-006
3. Install the Body Gear Steering Module Return Line Check Valve_____________________________________________________________
A. Consumable Materials
(1)
D00153 - Hydraulic Fluid - BMS 3-11, Type II
B.
References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
IPC 32-53-51 Fig. 1
C.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
D.
Install the Check Valve (Fig. 401)
S 424-007
(1)
Install the check valve in the steering module of the body gear.
(a)
Lubricate the O-ring and the packings with hydraulic fluid.
(b)
Install the new O-ring and the packing on the check valve.
(c)
Install the check valve into the module assembly.
(d)
Connect the return line to the check valve.
(2)
Supply system No. 1 hydraulic power (AMM 29-11-00/201).
(3)
Do a check on the hydraulic connection for leaks.
(4)
Remove the hydraulic power of system No. 1 (AMM 29-11-00/201).
S 864-008
S 794-009
S 864-010
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747-400 MAINTENANCE MANUAL
SEE A
MOUNTING RETURN LINE
BRACKET
CHECK VALVE
PACKING
O-RING
PACKING
NUT
CONTROL
MODULE
A
Body Gear Steering Control Module Return Line Check Valve
Figure 401
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