R 72-00-00-991-313 Fig. 610
3. Job Set-up
__________
Subtask 72-00-00-941-072
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
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Subtask 72-00-00-010-086
B. Open the fan cowl doors (Ref. TASK 71-13-00-010-040):
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
4. Procedure
_________
R (Ref. Fig. 610/TASK 72-00-00-991-313)
CAUTION : USE 2 WRENCHES TO REMOVE/INSTALL THE TUBE UNION NUT: ONE TO HOLD
_______ THE FITTING, THE OTHER TO LOOSE/TORQUE THE NUT. OTHERWISE, DAMAGE TO THE HARDWARE CAN OCCUR.
Subtask 72-00-00-210-068
A. Visual Inspection of the PS3 Line
(1) Inspect the PS3 line as follows:
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. The tubes for:
- cracks Not serviceable Replace the tube
- dents 4 per lineal foot,
spaced at least 1 in.
(25,4 mm) apart,
provided depht of each
dent does not exceed 20
percent of tube outer
diameter for straight
section or 10 percent of
tube outer diameter for
bend section
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R PS3 Line Figure 610/TASK 72-00-00-991-313- 14 (SHEET 1)
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R PS3 Line Figure 610/TASK 72-00-00-991-313- 24 (SHEET 2)
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R PS3 Line Figure 610/TASK 72-00-00-991-313- 34 (SHEET 3)
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R PS3 Line Figure 610/TASK 72-00-00-991-313- 44 (SHEET 4)
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-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
- flat areas Lenght shall not be
greater than 3 times the
tube outer diameter, and
contour change shall not
exceed 20 percent of
tube outer diameter for
straight section or 10
percent of tube outer
diameter for bend
section
- nicks, scratches 0.005 in. (0,13 mm) max.
depht
The hose for:
- broken hose braid 3 broken wires per
plait, and no more than
6 broken wires per
assembly, or per lineal
12 in. (305 mm) of hose
- crimps Not serviceable Replace the hose
- cuts, tears, Any number, provided
chaffing on fire maximum depth does not
sleeves exceed one-half of
sleeve thickness
Subtask 72-00-00-280-063
B. Dryout and Cleaning of the PS3 Line
(1) Cut and remove the lockwire.
(2) Disconnect the PS3 hose (20) from the ECU.
(3) Disconnect the PS3 tube from the core engine as follows:
(a) If necessary, get access to the PS3 restrictor: Remove the High Pressure Tee Duct (Ref. TASK 36-11-49-000-044).
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