a) Tighten the coupling nuts to 135-150 pound-inches (15-17 N.m).
4) Install the line from the P7 T-fitting to the port identified P7 on the gage assembly. a) Tighten the coupling nuts to 135-150 pound-inches
(15-17 N.m).
S 815-025-C00
(3)
Do the T2/CIT Sensor Test
(a)
Get and write down the ambient air temperature in the shade of the airplane.
(b)
Start and operate the engine (AMM 71-00-00/201) at low idle.
WARNING: OBEY THE GROUND SAFETY PRECAUTIONS IN AMM 71-00-00/201.
_______ IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT COULD OCCUR.
(c)
Read the gages on the Sensor Tester and make a record.
(d)
Stop the engine (AMM 71-00-00/201).
(e)
Use the T2/CIT Sensor Limits (Table 501) and do a check of the sensors. 1) Find the correct sensor limits for the air temperature. 2) Compare the gage values with the correct limits.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
TEST NO. 11 - T2/CIT SENSOR TEST
________________________________
3) If the CIT sensor is out of the limits, replace the CIT sensor (AMM 73-21-02/401).
NOTE: If you examine the CIT sensor as part of slow
____ engine acceleration trounbleshooting, and your results are in the upper limit on the table, a CIT sensor replacement could make engine acceleration time better.
4) If the T2 sensor is out of the limits, replace the T2 sensor (AMM 73-21-09/401). 5) If the sensors are in the limits, continue with this procedure.
S 085-026-C00
(4)
Remove the FIT/CIT Sensor Tester as follows:
(a)
Remove the P7 T-fitting from the P7 line as follows: 1) Disconnect the P7 line between the T-fitting and gages. 2) Remove the T-fitting from the P7 line and MEC. 3) Install the P7 line to the P7 nipple on the MEC.
a) Tighten the coupling nuts to 135-150 pound-inches (15-17 N.m).
(b)
Remove the P6 T-fitting from the P6 line as follwos: 1) Disconnect the P6 line between the T-fitting and gages. 2) Remove the T-fitting from the P6 line and MEC. 3) Install the flexible P6 hose to the metal P6 tube.
a) Tighten the coupling nuts to 135-150 pound-inches (15-17 N.m).
(c)
Remove the PB T-fitting from the PB line as follows: 1) Disconnect the PB line between the T-fitting and gages. 2) Remove the T-fitting from the PB line and MEC. 3) Install the flexible PB line to the PB metal tube.
a) Tighten the coupling nuts to 135-150 pound-inches (15-17 N.m).
(d)
Remove the Sensor Tester from the engine.
(5)
Do an Idle Leak Check (AMM 71-00-00/501, Test No. 3).
S 715-027-C00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
~....................................... | T2/CIT Sensor Limits | | Table 501 | ......................................... | AMBIENT AIR | T2 | CIT | | TEMPERATURE | P7-PB | P6-PB | | °F (°C) | PSID | PSID | ......................................... | -40 (-40) | 48-68 | 29-49 | ......................................... | -38 (-39) | 50-70 | 30-50 | ......................................... | -36 (-38) | 51-71 | 31-51 | ......................................... | -34 (-37) | 52-72 | 32-52 | ......................................... | -32 (-36) | 53-73 | 32-52 | ......................................... | -30 (-34) | 54-74 | 33-53 | ......................................... | -28 (-33) | 55-75 | 34-54 | ......................................... | -26 (-32) | 56-76 | 34-54 | ......................................... | -24 (-31) | 57-77 | 35-55 | ......................................... | -22 (-30) | 58-78 | 35-55 | ......................................... | -20 (-29) | 59-79 | 36-56 | ......................................... | -18 (-28) | 60-80 | 37-57 | ......................................... | -16 (-27) | 61-81 | 38-58 | ......................................... | -14 (-26) | 62-82 | 39-59 | ......................................... | -12 (-24) | 63-83 | 39-59 | ......................................... | -10 (-23) | 64-84 | 40-60 | ......................................... | -08 (-22) | 65-85 | 41-61 | ......................................... | -06 (-21) | 66-86 | 41-61 | ......................................... | -04 (-20) | 67-87 | 42-62 | ......................................... | -02 (-19) | 68-88 | 43-63 | ......................................... | 0 (-18) | 69-89 | 43-63 | .........................................
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