Passenger Service Unit (PSU) Oxygen Mask Installation
Figure 402
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S 014-005
(3) To remove the mask box cover, do the step that follows:
(a) Carefully lift the cover away from the mask box.
S 824-006
(4)
Pull the release cable through the slot into the mask box.
S 824-007
(5)
Move the release cable through and away from the mask lanyard rings.
S 014-008
(6)
Remove the mask tubing from the manifold outlets.
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(7)
Remove the masks.
S 164-010
(8)
If you install the same mask, make sure you clean the masks (Ref 35-22-31/701).
TASK 35-22-31-404-056
3. PSU Oxygen Mask Installation
____________________________
A. Standard Tools and Equipment
(1) Rod or Tool - 0.125 inch diameter
B. References
(1)
35-22-31/201, Oxygen
(2)
35-22-31/701, Oxygen
C. Access
(1) Location Zone
100 Upper Half of the Fuselage
D. Procedure - Install the Oxygen Masks
S 424-011
(1) Connect the mask tubing on the manifold outlets (Fig. 401).
(a) Push the mask tubing fully on the manifold outlets.
NOTE: If the oxygen box is not installed on the
____ airplane a heat gun can be used to make it easier to install (AMM 20-10-27/201).
S 864-012
(2) Pack the oxygen masks (Ref 35-22-31/201).
TASK 35-22-31-004-059
4. Attendant's and Lavatory Oxygen Mask Removal
____________________________________________
A. Standard Tools and Equipment
(1) Rod or Tool - 0.125 inch diameter
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737-300/400/500MAINTENANCE MANUAL
B. References
(1)
35-22-11/201, Oxygen
(2)
35-22-11/401, Oxygen
(3)
35-22-31/701, Oxygen
C. Access
(1) Location Zone
100 Upper Half of the Fuselage
D. Prepare to Remove the Oxygen Masks
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(1) If the forward or the aft left attendant's mask box door is closed, do the steps that follow (Fig. 405):
(a)
Put an 1/8-inch rod into the access hole in the service unit.
(b)
Push the rod and release the door latch.
(c)
Permit the oxygen masks to fall.
S 014-019
(2) If the door of the lavatory or the aft aisle right attendant's mask box is closed, do the steps that follow (Fig. 405):
(a)
Put a flat tool into the latch access hole, adjacent to the test stop button.
(b)
Push the tool and release the door latch.
(c)
Permit the oxygen masks to fall.
S 214-020
(3) To see if the generator fired, do the steps that follow:
(a)
When fired, the heat sensitive band on the generator is a black color.
(b)
When the heat sensitive band on the generator is not a black color, the generator did not fire.
S 044-021
(4) Before you install the generator that did not fire, deactivate the generator (Ref 35-22-11/201).
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