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(2) Put the access platform in position. Subtask 79-00-00-040-051
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 79-00-00-010-054
D. Open the thrust reverser cowl doors (Ref. TASK 78-36-00-010-040):
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR.
4. Procedure
_________ Subtask 79-00-00-210-060
A. Inspection of the oil system components, scavenge and supply tubes.
(1) Inspect the components that follows:
(a) Internal parts of the fan cowls.
(b) Internal parts of the thrust reverser cowls.
(c) Engine surface
(d) Oil system components:
- oil tank
- antisiphon device
- lubrication unit.
(e) Transfer gearbox and fan frame interfaces.
(2) Inspect the tubes that follows: NOTE : To do this check, look for oil stripes and drops.
____
(a) Worn or cracked hoses are not serviceable.
(b) Tubes and tube couplings with cracks are not serviceable.
(c) There is no limit to the number of nicks and scratches that are permitted up to 0.01 in. (0.25 mm) depth (after removal of the high metal).
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(d) Two dents for each tube are permitted if they are of a smooth contour up to 0.05 in. (1.27 mm) depth.
(3) No leakage is allowed; staining or wetting are allowed.
(4) If you suspect leakage, do as follows:
R (a) Clean the suspected area with stoddart solvent (Material No.
R CP2011) or acetone (Material No. CP1039) or ardrox 552 (Material
R No. CP2559) or turco ind 79 (Material No. CP2560) or mag-chem
R teksol (Material No. CP2566) or degreasol 99 R (Material No.
R CP2584) or mag-chem skysol (Material No. CP2656) or white spirit (Material No. CP2010).
(b) Operate the engine at 70 percent of N1 or above is necessary to pressurize the oil system and to get accurate results during leakage check (Ref. TASK 71-00-00-710-008). One some marginal cases, leaks at AGB pad seal, or damaged O-rings at equipment drive shaft level can be isolated by conducting engine runs at higher engine power runs.
(c) Check the suspected area. If you identify leakage, tighten the connecting nuts to the appropriate torque value, and/or replace defective items.
Subtask 79-00-00-210-061
B. Inspect attachment part of the oil tubes.
(1) Replace broken or cracked brackets.
(2) Replace worn clamps.
(3) Replace nuts and bolts that are not there.
(4) Tighten loose nuts and bolts to the appropriate torque value.
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________ Subtask 79-00-00-410-053
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser doors: (Ref. TASK 78-36-00-410-040) FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
(3) Remove the access platform(s). Subtask 79-00-00-440-051
B. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041). Subtask 79-00-00-410-054
C. Close Access
(1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Remove the warning notice(s).
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Check of the Electrical Master Chip Detector for Particles
1. Reason for the Job
__________________
Refer to the MPD TASK: 792000-C8 (Inspection of the Electrical Master Chip Detector at scheduled intervals). This inspection is also required when the pop out on the visual indicator is extended during operation. This procedure gives instructions to check/inspect the EMCD and its hardware when there is a detection of particles and gives recommendations for Line Maintenance.
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