(b) Disconnect the PS13 hose from the ECU and from the fan frame boss.
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(c) Inspect the connections as follows:
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. Fitting nuts for:
- damaged corners Any amount, provided
proper torque can be
obtained.
- damaged threads Any amount, provided Chase the threads.
effective threads are
not reduced by more than
one after chasing.
- safetywire hole Serviceable, provided
deformation and metal around hole is not
wear. cracked or torn.
2. Fittings seating surfaces for:
- circumferential Any amount not
scratches detectable with a 0.04
in. (1 mm) radius ball
scribe.
- axial scratches Not serviceable Replace the hose or the part.
- nicks, pits Not serviceable Replace the hose or the part.
(2) Clean the weep hole with white spirit (Material No. CP2010) and a plastic wire.
(3) Blow clean dry air into the PS13 connection to ECU to remove any dirt or water accumulation. Blocked hose is not serviceable. If necessary, replace the hose (Ref. TASK 72-23-00-000-029) and (Ref. TASK 72-23-00-400-029).
(4) Check the ECU nipple for dirt. If necessary, remove the dirt with a plastic wire. Take care to not introduce dirt inside the ECU.
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(5) Check the fan frame boss for dirt. If necessary, remove the dirt with stoddart solvent and a plastic wire. Blow clean dry air into the fan frame boss nipple.
(6) Lubricate the ECU and the fan frame boss nipples with engine fuel.
(7) Connect the PS13 line to the ECU and to the fan frame boss.
(8) TORQUE the ECU connection to between 180 and 200 lbf.in (2.03 and
2.26 m.daN).
(9) Safety with lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8001) or lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8002).
(10) TORQUE the fan frame boss connection to between 135 and 150 lbf.in
(1.52 and 1.69 m.daN).
(11) Safety with lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8001) or lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8002).
5. Close-up
________ Subtask 72-23-00-410-097
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(3) Remove the warning notice(s).
(4) Remove the access platform(s).
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TASK 72-23-00-280-002
Inspection/Check of the PS12 line
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific plastic wire
No specific warning notice
No specific access platform 1.5 m (4 ft. 11 in.)
No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP2010 * white spirit (Ref. 70-30-00) Material No. CP8001 * lockwire 0.032 in. (0.8 mm) dia. (Ref. 70-30-00) Material No. CP8002 * lockwire 0.032 in. (0.8 mm) dia. (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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