36-21-20
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A 737-300/400/500MAINTENANCE MANUAL
SEE
PACK TRIP OFFA
WING-BODY OVERHEATA
BLEED TRIP OFFA
PACK TRIP OFFA
WING-BODY OVERHEATA
BLEED TRIP OFFA
Dual Duct Pressure Indicator Installation
Figure 401 (Sheet 1)
H77125
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36-21-20
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
1. ELECTRICAL CONNECTOR
2. PRESSURE INDICATOR
4. CLAMP SCREW 3. CLAMP
FWD
6. BLEED AIR CONTROL PANEL B (6 LOCATIONS) FASTENER 5. QUARTER TURN
Dual Duct Pressure Indicator Installation
Figure 401 (Sheet 2)
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H77190
A
737-300/400/500MAINTENANCE MANUAL
TASK 36-21-20-364-008
3. Dual Duct Pressure Installation (Fig. 401)_______________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power
(2)
AMM 36-05-00/201, Pneumatic System (Selection)
B. Access
(1) Location Zone
212 Flight Compartment - Right
C. Install the Dual Duct Pressure Indicator
S 014-009
(1)
Put the pressure indicator (2) backward from the front of the bleed air control panel (6) through the clamp (3) on the back.
S 424-010
(2)
Tighten the clamp screw (4) to 15 to 18 pound-inches.
S 424-011
(3)
Install the electrical connector (1).
S 424-012
(4)
Install the bleed air control panel (6) into the P5 panel frame.
(a) Engage the quarter-turn fasteners (5) (6 locations).
D. Dual Duct Pressure Indicator Test
S 424-013
(1)
Remove the DO-NOT-CLOSE tag and close this circuit breaker:
(a) Circuit Breaker Panel, P6-4:
1) 6D01, AIR CONDITIONING PRESS IND
(2)
Do this task: Supply Electrical Power (AMM 24-22-00/201).
S 864-015
(3)
Do this task: Supply Pressure to the Pneumatic System (Selection) (AMM 36-05-00/201).
S 864-016
(4)
Put the ISOLATION VALVE switch on the bleed air control panel (6) to OPEN.
S 864-014
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737-300/400/500MAINTENANCE MANUAL
S 864-017
(5)
Make sure that the L and R duct pressure needles on the pressure indicator show approximately the same pressure.
S 864-018
(6)
Put the ISOLATION VALVE switch on the bleed air control panel (6) to CLOSE.
S 864-019
(7)
Make sure that one of the duct pressure needles shows a decrease in pressure.
E. Put the Airplane to Its Usual Condition
S 864-020
(1) Do this task: Remove Pressure from the Pneumatic System
(AMM 36-05-00/201).
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