(5)
High Stage Regulator
(6)
390°F Thermostat (Precooler)
(7)
450°F Thermostat (PRSOV)
TASK 36-11-05-206-001
2. Do An Inspection/Check Of The Engine Bleed Air Control System_____________________________________________________________
A. General
(1) Three separate procedures are supplied in this task. Each task will examine a part of the engine bleed air control system. The first procedure will examine the Precooler Control Valve system. The second procedure will examine the PRSOV and Bleed Air Regulator system. The third procedure will examine the High Stage Valve and High Stage Regulator system.
NOTE: The Bleed Air Control System Operational Test is necessary
____ only once if all of three procedures are accomplished in the order given below.
Quick disconnect type fittings can be used on the Test Set Fittings.
(2) Make sure you apply anti-seize compound to all male threads before you reconnect the pneumatic control/supply lines.
B. Special Tools and Equipment
(1) Portable Valve Actuating Test Set (ITCAN)
(a) Garrett P/N 290121-3 or 290121-4 or 3792195-1
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A
737-300/400/500MAINTENANCE MANUAL
PORTABLE VALVE ACTUATING TEST SET
PRIMARY SYSTEM GAUGE
PRIMARY
REGULATOR
KNOB
NITROGEN
BOTTLE
PRESSURE
REGULATOR NO. 1
PRESSURE
REGULATOR NO. 2
TEST SET
FITTINGS
TEST SET
FITTINGS
GARRETT P/N 290121-3
Portable Valve Actuating Test Set
Figure 601 (Sheet 1)
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A
737-300/400/500
MAINTENANCE MANUAL
KNOB REGULATOR PRIMARY BOTTLE NITROGEN
PRIMARY SYSTEM GAUGE
TEST SET FITTINGS
PRESSURE REGULATOR NO. 1
NO. 2 REGULATOR PRESSURE
PORTABLE VALVE ACTUATING TEST SET
GARRETT P/N 3792195-1
Portable Valve Actuating Test Set Figure 601 (Sheet 2)
C45586
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C.
D.
E.
A
737-300/400/500MAINTENANCE MANUAL
(2)
Pressure Hoses:
(a)
TYPE A - (Quantity 2) - Pressure hose (12 ft.) rated at 300 psi. with these type of end fittings: 1) Female - which will fit MS33514-6 male type fittings
(Flareless) 2) Female - which will fit MS33656-4 male type fittings (Flared)
(b)
TYPE B - (Quantity 2) - Pressure Hose (12 ft.) rated at 300 psi. with female fittings which will mate with MS33656-4 male type fittings (Flared).
(3)
Pneumatic Fittings:
~............................................................ | QUANTITY | TYPE | SPECIFICATION | .............................................................. | 1 | TEE | AN784-4 | .............................................................. | 1 | CAP | MS21914-6 | .............................................................. | 1 | UNION | MS21902-6 | .............................................................. | 1 | UNION | AN815-4D | .............................................................. | 1 | O - RING | MS29513-12 | .............................................................. | 2 (OPTIONAL) | 90° ELBOW (Flareless) | NAS1762J0606 | 2..............….......................….....................1
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