(b)
511-LPB Pressure Probe (alternative)
511-LPX Pressure Probe (alternative)
Solomat Instrumentation Division
Stamford, CT 06906
A-302 Static Pressure Probe (alternative)
Dwyer Instruments, Inc.
Michigan City, IN 46360
(c)
Thermometer - 0 to 160°F range with accuracy to |2°F
(d)
Plastic tubing - 1/8 inch ID, approximately 6 feet
(2)
Aluminum Foil Marker - BAC27DEX2015References
(1)
AMM 21-58-00/101, Equipment Cooling System
(2)
AMM 24-22-00/201, Electrical Power
(3)
AMM 34-62-11/401, FMCS Control Display UnitAccess
(1)
Location Zones 101 Control Cabin - Left 102 Control Cabin - Right 205 Electronic Compartment
Prepare for the Test
S 035-035
(1)
Release the fasteners at the modules on the main instrument panel.
S 015-036
(2)
Move the modules aft to the stops to get access to the test ports 11 through 18 (Fig. 502).
S 015-037
(3)
Remove the Control Display Units (CDUs) of the Flight Management Computer System (FMCS), on the P9 panel, to get access to the test ports 19 and 20 (Fig. 502) (AMM 34-62-11/401).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT EFIS ú
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A 737-300/400/500MAINTENANCE MANUAL
S 015-038
(4)
Remove the aluminum foil markers from the remaining test ports which are on the E/E racks in the electronic compartment (Fig. 502).
S 865-040
(5)
Supply electrical power (AMM 24-22-00/201).
S 215-041
(6)
Make sure these circuit breakers are closed on the P18 panel:
(a)
BLOWER NORMAL
(b)
BLOWER ALTERNATE
(c)
EQUIP COOLING CONT
S 865-042
(7)
Make sure that the EQUIP COOLING selector switch is at NORMAL, on the P5 panel.
S 865-043
(8)
Close the hatch in the electronic compartment if the ambient temperature outside of the airplane is below 40°F.
F. Do the System Performance Test
S 285-044
(1)
Measure the temperature in the electronics compartment between the E-2 and E-3 equipment racks.
S 975-045
(2)
Make a record of the temperature.
S 975-046
(3)
Make a record of the barometric pressure.
S 785-047
(4)
Measure the pressure at each test port (Fig. 502 and 503).
S 975-058
(5)
Make a record of the test port pressures (Fig. 505).
S 975-047
(6)
Correct the test port pressures for the ambient temperature and barometric pressure as shown in Fig. 504.
(7)
Make a second record of the test port pressures (Fig. 505).
S 975-048
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737-300/400/500MAINTENANCE MANUAL
S 975-050
(8) Make sure the test port pressures are more than the minimum
acceptable pressures shown in the Fig. 505.
NOTE: Refer to AMM 21-58-00/101 for fault isolation data if one or
____ more of the test port pressures are less than the minimum acceptable pressures.
G. Put the Airplane Back to Its Usual Condition
S 415-051
(1)
Install a new aluminum foil decal on the top of the test ports which are on the equipment racks in the electronic compartment (Fig. 502).
S 085-052
(2)
Remove the test equipment from the airplane.
S 415-053
(3)
Push the modules forward on the main instrument panel and engage the fasteners.
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