(e)
Remove nuts, bolts and washers (4 locations) and remove the clamps.
(f)
Remove the surge accumulator.
(g)
Remove the reducer union and fittings from the surge accumualtor.
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A
747-400
MAINTENANCE MANUAL
HYDRAULIC PRESSURE SURGE ACCUMULATOR FOR THE WING LANDING GEAR
SEE A
HYDRAULIC PRESSURE
SURGE ACCUMULATOR
FOR THE WING
LANDING GEAR
SEE A
SEE B
HYDRAULIC PRESSURE
HYDRAULIC SURGE ACCUMULATOR
LINE
PLACARD
INBD
PRESSURE GAGE MANIFOLD GAS LINE FWD
CHARGING VALVE
HYDRAULIC PRESSURE SURGE ACCUMULATOR
FOR THE WING LANDING GEAR
(LEFT SIDE SHOWN, RIGHT SIDE ALMOST THE SAME)
A
Hydraulic Pressure Surge Accumulator Installation
Figure 401 (Sheet 1)
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A
747-400 MAINTENANCE MANUAL
HYDRAULIC PRESSURE SURGE ACCUMULATOR
SEE D
PRESSURE
GAGE
MANIFOLD SEE C
PLACARD
HYDRAULIC PRESSURE SURGE ACCUMLATOR HYDRAULIC
FOR THE BODY LANDING GEAR LINE
B
UNION
O-RING
CHARGING
VALVE ACCUMULATOR
CLAMP
VALVE
CAP
O-RING
MANIFOLD
UNION
C
TUBING TO PRESSURE GAGE AND CHARGING VALVE (GAS LINE)
HYDRAULIC PRESSURE SURGE ACCUMULATOR
D
Hydraulic Pressure Surge Accumulator Installation Figure 401 (Sheet 2)
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A
747-400 MAINTENANCE MANUAL
(h) Discard the O-rings.
TASK 32-41-22-404-010
3. Hydraulic Pressure Surge Accumulator - Installation (Fig. 401)
___________________________________________________
A. General
(1)
In subsequent steps the hydraulic pressure surge accumulator is referred to as the surge accumulator.
B.
Consumable Materials
(1)
D00288 Lubricant - MCS 352
(2)
D00196 Fluid, Hydraulic - BMS 3-11, Type IV, Class 1
NOTE: You may use either BMS 3-11 or MCS 352 to lubricate the
____ O-rings and fittings on the surge accumulator assembly.
C. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 12-15-11/301, Hydraulic Pressure Surge Accumulator
(3)
AMM 24-22-00/201, Manual Control
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 32-00-30/201, Landing Gear Door Locks
(6)
AIPC 32-41-32 Fig. 1
D.
Access
(1)
Location Zones 138 Body Landing Gear Well, RH (Body Gear Brake Pressure Surge Accumulator) 571 Rear Spar to Landing Gear Support Beam, LH (Left Wing Gear Brake Pressure Surge Accumulator)
671 Rear Spar to Landing Gear Support Beam, RH (Right Wing Gear Brake Pressure Surge Accumulator)
E. Procedure
S 494-011
(1) Make sure the landing gear ground locks are installed (AMM 09-11-00/201).
S 494-012
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
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