36-11-05
ALL ú ú 01 Page 623 ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
2) No leakage is found, continue.
S 716-117
(24)
Turn the NO. 1 pressure regulator counterclockwise until (0.0) psig. is indicated on test set gauge No. 3.
S 716-118
(25)
Set the SYSTEM SELECTOR handle to the OFF position.
S 036-119
(26)
Remove the cap from test set fitting NO. 1.
S 036-120
(27)
Disconnect the TYPE A hose from test set fitting No. 4.
S 436-121
(28)
Connect the TYPE A hose to test set fitting No. 1.
S 436-122
(29)
Install cap on test set fitting No. 4.
S 036-123
(30)
Disconnect the TYPE B test hose from the High Stage Regulator port B and the test set.
S 436-124
(31)
Install cap on test set fitting No. 2.
S 426-125
(32)
Install relief valve into port B on the High Stage Regulator.
NOTE: Make sure to instal the relief valve with a new O-ring
____
and lockwire.
S 716-126
(33) Set the SYSTEM SELECTOR handle to the B position. (See Fig. 604 Sheet 3)
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36-11-05
ALL ú ú 01 Page 624 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
HIGH STAGE REGULATOR
SEE C
PORTABLE VALVE ACTUATING TEST SET (EXAMPLE)
TEST SET FITTING NO. 1 HIGH STAGE REGULATOR
HIGH STAGE
VALVE
PRESSURE VISUAL
CONTROL POSITION
LINE INDICATOR C
TYPE A PRESSURE HOSE SUPPLY PRESSURE LINE
High Stage Regulator and High Stage Valve System Inspection/Check
Figure 604 (Sheet 3)
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36-11-05
ALL ú ú 01 Page 625 ú Jul 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 716-127
(34)
Slowly adjust the Primary Regulator until (110.0 | 5.0) psig. is indicated on the Primary System Gauge.
S 216-144
(35)
Examine the position indicator on the high stage valve.
(a)
If the position indicator is NOT in the full-closed position, replace the high stage regulator (AMM 36-11-86/401), then go to step I.(36).
(b)
If the position indicator is in the full-closed position, continue.
S 716-128
(36)
Turn the Primary Regulator counter clockwise until (0.0) psig. is indicated on the Primary System Gauge.
S 716-129
(37)
Set the SYSTEM SELECTOR handle to the OFF position.
S 726-130
(38)
Do The Engine Bleed Air Control System Operational Test (ENGINE) (Ref 36-11-05/501).
J. Put the Airplane and the Test Set Back To Their Usual Condition
S 416-131
(1)
Close the thrust reverser assemblies (Ref 78-31-00/201).
(2)
Close the fan cowl assemblies (Ref 78-31-00/201).
S 866-133
(3)
Remove the electrical power from the airplane if it is no longer necessary (AMM 24-22-00/201).
S 416-132
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