D. Procedure
S 862-014
(1)
Release the pressure from the pneumatic system (AMM 36-05-00/201).
(2)
Put a container below the vent to catch hydraulic fluid.
S 492-015
NOTE: Make sure the hydraulic fluid does not touch persons or
____
the airplane.
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737-300/400/500MAINTENANCE MANUAL
S 862-027
WARNING: PUT A RAG AROUND THE MANUAL DEPRESSURIZATION VALVES ON THE
_______ RESERVOIR PRESSURIZATION MODULE TO CATCH SPRAY OF HYDRAULIC FLUID. THE SPRAY OF HYDRAULIC FLUID CAN CAUSE INJURIES TO PERSONS. IF THE HYDRAULIC FLUID TOUCHES THE SKIN, FLUSH YOUR SKIN WITH WATER. IF THE HYDRAULIC FLUID TOUCHES YOUR EYES, FLUSH THE EYES WITH WATER AND GET MEDICAL AID.
(3)
Slowly open the depressurization (vent) valves to prevent a spray of hydraulic fluid.
S 492-017
(4)
Install the lock on each depressurization (vent) valve when the valve is fully open.
NOTE: To release the pressure from only one reservoir, put the
____ lock on the applicable depressurization (vent) valve. The pressure is removed from the reservoir when the air flow from the depressurization (vent) valve stops.
E. Put the Airplane Back to Its Usual Condition
S 092-018
(1)
Remove the lock(s) from the depressurization (vent) valve(s).
(2)
Do the procedure above to pressurize the hydraulic reservoirs.
S 862-019
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737-300/400/500MAINTENANCE MANUAL
HYDRAULIC RESERVOIR PRESSURIZATION SYSTEM - ADJUSTMENT/TEST
___________________________________________________________
1. General
_______
A. This procedure gives you a leakage test of the pressurization system for the hydraulic reservoirs .
TASK 29-09-00-795-074
2. Hydraulic Reservoir Pressurization System Test
______________________________________________
A. Special Tools and Equipment
(1) Applicable hydraulic caps and plugs
B. Standard Tools and Equipment
(1) Controlled source of clean, dry nitrogen, 0 to 70 psi
C. References
(1)
AMM 29-09-00/201, Hydraulic Reservoir Pressurization System
(2)
AMM 29-15-00/201, Hydraulic Systems A, B and Standby
D. Access
(1) Location Zone
216, 217 Main Wheel Well
E. Procedure
S 845-075
(1)
Make sure the two engines and the APU are off.
S 865-111
(2)
Release the pressure from the hydraulic reservoirs
(AMM 29-09-00/201).
S 615-077
(3)
Make sure the reservoirs for the hydraulic systems A and B are filled with hydraulic fluid (AMM 29-15-00/201).
S 035-078
(4)
Remove the vents from the lines leading to the reservoir pressurization module from the right and left ECS ducts.
NOTE: One vent is located at approximately RBL 25 on the forward
____ bulkhead. The other vent is located at approximately LBL 30 on the forward bulkhead.
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