|
|
发表于 2012-8-10 11:16:46
|
显示全部楼层
来自： 中国北京
(6) Examine the particles from the chip detector and scavenge screen to identify the
physical properties of the material (shape, size, quantity, magnetic properties, color)
to be used in (SUBTASK 79-00-00-240-001-F00).
(a) Any quantity of material that is less than or equal to 0.004 inch (0.10 mm) in all
dimension is satisfactory.
NOTE: Material that is greater than 0.004 inch (0.10 mm) in any dimension is
not normal fuzz.
(b) Use a 10x hand held magnifying lens, STD-1070 and a magnetic bar to examine
the magnetic particles from the chip detectors if more than 0.004 inch (0.10 mm)
in any dimension:
1) Refer to CFM NDT manual Part 10 "CFMI-TP.NT.11" and/or set, SPL-2450,
CD-ROM 856A2683G01 to identify possible source and/or refer to Figure 3
for examples of shapes that may be seen on a chip detector.
(c) Use a 10x hand held magnifying lens, STD-1070 to examine the non-magnetic
particles from the chip detectors if more than 0.004 inch (0.10 mm) in any
dimension:
1) Refer to CFM NDT manual Part 10 "CFMI-TP.NT.11" and/or set, SPL-2450,
CD-ROM 856A2683G01 to identify possible source and/or refer to Figure 3
for examples of shapes that may be seen on a chip detector.
SUBTASK 79-00-00-240-001-F00
(7) If you have identified the collected particles, do these steps:
(a) If you find magnetic rectangular tang [approximate size 0.12 X 0.16 X 0.06 inch
(3 X 4 X 1.5 mm)] from the AGB/TGB detector, it can be an AGB sealol seal antirotation
tab. Do these steps:
1) Continue the engine in service provided that the oil consumption is in the
limit. Refer to this task: Engine Operation Limits, AMM
TASK 71-00-00-800-806-F00.
2) If there is an AGB pad oil leakage, replace the affected sealol seal. These
are the tasks:
Sealol Seal Removal, AMM TASK 72-60-00-000-802-F00
Sealol Seal Installation, AMM TASK 72-60-00-400-802-F00.
(b) If you find magnetic material on the AGB/TGB scavenge screen or chip
detector, examine the starter magnetic plug for contamination. To examine it,
do this task: Starter Magnetic Plug Inspection, AMM
TASK 80-11-01-200-801-F00.
1) If the starter magnetic plug has contamination or if there was a recent
starter failure, do these steps:
a) Replace the scavenge oil filter element.
These are the tasks:
Scavenge Oil Filter Element Removal, AMM
TASK 79-21-06-000-801-F00
Scavenge Oil Filter Element Installation, AMM
TASK 79-21-06-400-801-F00.
b) Re-examine the AGB/TGB chip detector each 10 to 20 cycles until the
chip detector is found to be clean. Replace the scavenge oil filter
element each time you find contamination on the AGB/TGB chip
detector.
2) If you find that the material is not from the starter or from a recent starter
removal, do these steps:
a) Do this task: EEC Alternator and Alternator Rotor Removal, AMM
TASK 73-21-08-000-801-F00.
b) Do a visual check of EEC alternator and rotor and look for debris and
obvious damage.
c) If damage or debris is found, do these steps:
<1> Remove the debris from the alternator pad area and clean as
necessary.
<2> Install a new EEC alternator and rotor. Do this task: EEC
Alternator and Alternator Rotor Installation, AMM
TASK 73-21-08-400-801-F00.
<3> Do this task: Flush The Engine Oil System, AMM
TASK 12-13-11-100-801.
<4> Re-examine the AGB/TGB chip detector every 10 to 20 cycles
until it is found to be clean. Replace the scavenge oil filter
element each time you find contamination.
d) If no damage or debris is found, do this task: EEC Alternator and
Alternator Rotor Installation, AMM TASK 73-21-08-400-801-F00.
e) If no damage or debris is found, and bearing material (M50 material
from either the inner/outer race and/or rolling elements) has been
identified on the AGB/TGB chip detector, replace the AGB and TGB.
These are the tasks:
NOTE: M50 material has the appearance as thin shiny bright
laminated magnetic flakes.
Accessory Gearbox Removal, AMM TASK 72-63-00-000-804-F00
Accessory Gearbox Installation, AMM TASK 72-63-00-400-804-F00
Transfer Gearbox Assembly Removal, AMM
TASK 72-62-00-000-801-F00
Transfer Gearbox Assembly Installation, AMM
TASK 72-62-00-400-801-F00
(c) If you find non-magnetic flat piece with castellated portion in the AGB/TGB
scavenge screen, it can be a key lock, AGB stud or insert. Do this step:
1) Continue the engine in service provided there is no other metallic debris.
(d) If you find aluminum debris in the AGB/TGB sump scavenge screen, do these
steps:
NOTE: Aluminum on the AGB/TGB scavenge screen can indicate either a
failed alternator or AGB.
1) Do this task: EEC Alternator and Alternator Rotor Removal, AMM
TASK 73-21-08-000-801-F00.
2) Do a visual check of the EEC alternator and rotor and the AGB pad, look for
debris and obvious damage.
a) If there was no damage in the AGB, but debris was found, remove the
debris from the alternator pad area and clean as necessary.
b) Install a new EEC alternator and rotor. Do this task: EEC Alternator and
Alternator Rotor Installation, AMM TASK 73-21-08-400-801-F00.
c) Do this task: Flush The Engine Oil System, AMM
TASK 12-13-11-100-801.
d) Re-examine the AGB/TGB chip detector and the scavenge oil filter
element every 10 to 20 cycles until they are found to be clean.
3) If the damage is in the AGB alternator pad, replace the AGB. These are the
tasks:
Accessory Gearbox Removal, AMM TASK 72-63-00-000-804-F00
Accessory Gearbox Installation, AMM TASK 72-63-00-400-804-F00.
4) If the checks of the EEC alternator, rotor and AGB alternator pad are
satisfactory, do these steps for suspect AGB deterioration:
a) Clean or replace the scavenge oil filter.
Scavenge Oil Filter Assembly Removal, AMM
TASK 79-21-04-000-801-F00
Scavenge Oil Filter Assembly Installation, AMM
TASK 79-21-04-400-801-F00.
b) In 25 cycles or less, do one of these steps:
<1> Replace the engine, these are the tasks:
Power Plant Removal, AMM TASK 71-00-02-000-801-F00
Power Plant Installation, AMM TASK 71-00-02-400-801-F00.
<2> Or replace the AGB, these are the tasks:
Accessory Gearbox Removal, AMM
TASK 72-63-00-000-804-F00
Accessory Gearbox Installation, AMM
TASK 72-63-00-400-804-F00.
(e) If you find coke particles in some of the AGB/TGB, AFT and/or FWD screens, do
these steps:
1) Replace the scavenge oil filter element.
These are the tasks:
Scavenge Oil Filter Element Removal, AMM
TASK 79-21-06-000-801-F00
Scavenge Oil Filter Element Installation, AMM
TASK 79-21-06-400-801-F00.
(f) If you find coke particles in the AGB/TGB screen only, do these steps:
1) Do this task: EEC Alternator and Alternator Rotor Removal, AMM
TASK 73-21-08-000-801-F00.
2) Do a visual check of the EEC alternator and alternator rotor for coke
particles. If it is necessary, clean the coke particles.
3) Do this task: EEC Alternator and Alternator Rotor Installation, AMM
TASK 73-21-08-400-801-F00.
(g) If you find bearing material (material from either the inner/outer race and/or
rolling elements) on the Aft sump or Fwd sump scavenge screen or chip
detector, replace the engine. These are the tasks:
NOTE: Material from the inner/outer race and/or rolling elements has the
appearance as thin shiny bright laminated magnetic flakes. Refer to
CFM NDT manual Part 10 " CFMI-TP.NT.11" and/or set, SPL-2450, CDROM
856A2683G01 to identify possible source.
Power Plant Removal, AMM TASK 71-00-02-000-801-F00
Power Plant Installation, AMM TASK 71-00-02-400-801-F00.
(h) If you find plastic or organic material in the Fwd sump scavenge screen, do
these steps:
NOTE: The plastic or organic material is an indication of a deterioration of the
forward air/oil abradable seal or the forward air/oil separator ducts
and can include one or more of these:
1) Glass fiber with polyamide material with grooves (reddish-brown
color)
2) Phenolic or plastic material (greenish-white color)
3) Resin polyamide material (green or brown color).
1) Continue the engine in service provided that the oil consumption is in the
limits. Refer to this task: Engine Operation Limits, AMM
TASK 71-00-00-800-806-F00.
(i) If you find one or more 0.25 inch (6.4 mm) hex base nuts in the Fwd Sump,
replace the engine. These are the tasks:
NOTE: This nut came from the Inlet gearbox (IGB).
Power Plant Removal, AMM TASK 71-00-02-000-801-F00
Power Plant Installation, AMM TASK 71-00-02-400-801-F00.
(j) If you find hastelloy X material looks same as honeycomb or AS7G06 material
in the aft sump scavenge screen, it can be from the air/oil separator, replace
the engine. These are the tasks:
1) Do this task: Power Plant Removal, AMM TASK 71-00-02-000-801-F00
2) Do this task: Power Plant Installation, AMM TASK 71-00-02-400-801-F00.
(k) If you find one of the following materials in the Aft Sump scavenge screen,
continue the engine in service provided that the oil consumption is in the limit.
Refer to this task: Engine Operation Limits, AMM TASK 71-00-00-800-806-F00.
1) Non-magnetic, gray and granular debris - can be abradable material
2) Non-magnetic or metallic hair-like debris - can be rotating air/oil seal
material
3) Non-magnetic, silver sheath - can be air/oil seal coating material.
(l) If you find organic material from packings (O-rings), that has black broken
pieces from any sump, do these steps:
1) Make sure that the oil pressure and the oil consumption are in the limits
that are listed in this task: Engine Operation Limits, AMM
TASK 71-00-00-800-806-F00.
2) Examine the scavenge oil filter element for similar packing material. Do this
task: Scavenge Oil Filter Element Removal, AMM
TASK 79-21-06-000-801-F00.
CAUTION: THE OUTER SPOOL VALVE O-RING WILL BE CAPTURED IN THE
SCAVENGE FILTER. THE INNER SPOOL VALVE O-RING WILL BE
CAPTURED IN THE CHIP DETECTOR SCAVENGE SCREEN. IF
EITHER OF THE ABOVE O-RINGS ARE MISSING OR DAMAGED,
THE ENGINE OIL CAN LEAK OUT IF THE CHIP DETECTOR IS NOT
INSTALLED CORRECTLY.
3) If black packing debris is found in the scavenge screen, it is probably from
the inner sealing spool valve on the lubrication unit, do these steps.
a) Replace the packing for the inner and outer spool of the lubrication unit.
These are the tasks:
Packing Replacement On The Inner Sealing Spool (Lubrication
Unit Installed), AMM TASK 79-21-01-400-802-F00
Packing Replacement On The Inner and Outer Sealing Spools
(Lubrication Unit Removed),AMMTASK 79-21-01-400-803-F00.
b) If you do not replace these packings, a Continue-In-Service limit of 250
cycles is permitted with these conditions.
<1> All chip detectors are examined for correct installation [locked]
by two different persons prior to the close of the fan cowls (AMM
TASK 79-21-05-400-804-F00).
<2> Do the chip detector installation check again each time the fan
cowls are opened.
4) Do the chip detector installation check (by two people) again anytime the
chip detectors are removed and installed.
(m) If you find granular carbon material in the Aft Sump scavenge screen, it can be
from a cracked scavenge line in the TRF or coke buildup in the aft sump oil
system. Do these steps:
1) Do this task: Aft Sump Oil System Inspection, AMM
TASK 79-00-00-200-806-F01.
2) If the engine oil pressure trend does not show a gradual increase, do these
tasks at the next convenient opportunity.
a) Do this task: Oil Scavenge Line Cleaning, AMM
TASK 72-56-00-100-802-F00.
b) Do this task: Oil Supply Line Cleaning, AMM
TASK 72-56-00-000-801-F00 or Oil Supply Tube Replacement, AMM
TASK 72-56-00-300-801-F00.
3) If the engine oil pressure trend shows a gradual increase, do these tasks in
less than 25 cycles.
a) Do this task: Oil Scavenge Line Cleaning, AMM
TASK 72-56-00-100-802-F00.
b) Do this task: Oil Supply Line Cleaning, AMM
TASK 72-56-00-000-801-F00 or Oil Supply Tube Replacement, AMM
TASK 72-56-00-300-801-F00.
4) Replace the scavenge oil filter element.
These are the tasks:
Scavenge Oil Filter Element Removal, AMM
TASK 79-21-06-000-801-F00
Scavenge Oil Filter Element Installation, AMM
TASK 79-21-06-400-801-F00.
5) Monitor the engine oil pressure during the next 20 to 50 hours of operation.
(n) If you find the materials that follow from any sump, continue the engine in
service:
1) Machined chips that are shiny curls of metal or that have parallel marks
from machine tools when you see them with a 10x hand held magnifying
lens, STD-1070.
2) Rub strips from the labyrinth seal that are made of stainless steel that look
like silver shavings.
(o) If you find pure silver flakes from any sump, not related with bearing material,
continue the engine operation but decrease the chip detector inspection
interval at 50-75 hours. Return to usual inspection interval when the chip
detector is found to be clean for three consecutive checks.
(p) If the material identified per the laboratory analysis was not identified in one of
the above categories, continue the engine operation for one month but
decrease the chip detector inspection interval at 50-75 hours. Return to usuall
inspection interval when the chip detector is found to be clean for three
consecutive checks.
SUBTASK 79-00-00-210-009-F00
(8) If you find magnetic particles that you cannot identify, do these steps:
(a) SATISFACTORY CONDITION - If you find less than four particles with the
condition below, continue the engine in service.
1) The largest particle is more than 0.004 inch (0.10 mm) and less than 0.01
inch (0.25 mm) in any dimension.
(b) MARGINAL CONDITION - Do these steps for the limits, which are given below
(Table 1):
Table 1
PARTICLES
FOUND
LARGEST PARTICLE
DIMENSION
4 or More More than 0.004 inch (0.10 mm) and less than 0.01 inch (0.25 mm)
Less than 4 More than or equal to 0.01 inch (0.25 mm),
But less than 0.02 inch (0.50 mm)
1) Send the particles to the laboratory for analysis.
2) Do the inspection of the chip detectors for particles after each flight until you
get the analysis from the laboratory.
3) If you find magnetic particles during the post flight inspections that you
cannot identify limit the engine operation to 5 cycles or 25 hours which ever
comes first.
4) After you get the analysis from the laboratory, then do the applicable
corrective action for the type of material that you found as defined in
SUBTASK 79-00-00-240-001-F00.
NOTE: For more information on particle analysis, refer to the CFMI Non-
Destructive Test Manual, Part 9 and Part 10 or CD-ROM
856A2683G01.
(c) UNSATISFACTORY CONDITION - Do these steps for the limits, which are given
below (Table 2):
Table 2
PARTICLES
FOUND
LARGEST PARTICLE
DIMENSION
Any amount More than or equal to 0.02 inch (0.50 mm)
4 or more More than or equal to 0.01 inch (0.25 mm),
But less than 0.02 inch (0.50 mm)
1) Send the particles to the laboratory for analysis.
CAUTION: DO NOT INSTALL THE CHIP DETECTOR WITHOUT THE PACKING.
INSTALLATION OF THE CHIP DETECTOR WITHOUT THE
PACKING CAN CAUSE OIL LEAKAGE DURING ENGINE
OPERATION AND A POSSIBLE ENGINE FAILURE.
2) Do this task: Magnetic Chip Detector (MCD) Installation, AMM
TASK 79-21-05-400-804-F00.
3) Operate the engine at a minimum of 70 percent N1 for 10 minutes. Do this
task:Start the Engine Procedure (Selection), AMM
TASK 71-00-00-800-807-F00.
4) Do a check of the chip detectors where magnetic particles were identified.
a) If you do not find magnetic particles, do these steps:
<1> If you cannot get the analysis from the laboratory, do a check of
the chip detectors after each flight until you get the analysis from
the laboratory.
<2> If you find magnetic particles larger than 0.004 inch (0.10 mm) in
any dimension during any chip detector inspection, do not
operate the engine until the first sample of magnetic particles
have been identified.
b) If you find magnetic particles larger than 0.004 inch (0.10 mm) in any
dimension during any chip detector inspection, do not operate the
engine until the first sample of magnetic particles have been identified.
5) After you get the analysis from the laboratory, then do the applicable
corrective action for the type of material that you found as defined in
SUBTASK 79-00-00-240-001-F00.
NOTE: For more information on particle analysis, refer to the CFMI Non-
Destructive Test Manual, Part 9 and Part 10, or set, SPL-2450, CDROM
856A2683G01.
SUBTASK 79-00-00-210-010-F00
(9) If you find non-magnetic particles that you cannot identify in the Fwd or Aft Sump
scavenge screen or in the AGB/TGB chip detector which are not aluminum-like, do
these steps:
(a) SATISFACTORY CONDITION - If you find less than four particles with the
condition below, continue the engine in service.
1) The largest particle is less than 0.4 inch (10 mm) in all dimensions.
(b) UNSATISFACTORY CONDITION - Do these steps for the limits, which are given
below (Table 3):
Table 3
PARTICLES
FOUND
LARGEST PARTICLE
DIMENSION
Any amount More than or equal to 0.4 inch (10 mm)
4 or more Less than 0.4 inch (10 mm)
1) Send the particles to the laboratory for analysis.
CAUTION: DO NOT INSTALL THE CHIP DETECTOR WITHOUT A PACKING.
INSTALLATION OF THE CHIP DETECTOR WITHOUT A PACKING
CAN CAUSE OIL LEAKAGE DURING ENGINE OPERATION AND A
POSSIBLE ENGINE FAILURE.
2) Do this task: Magnetic Chip Detector (MCD) Installation, AMM
TASK 79-21-05-400-804-F00.
3) Operate the engine at a minimum of 70 percent N1 for 10 minutes. Do this
task: Start the Engine Procedure (Selection), AMM
TASK 71-00-00-800-807-F00.
4) Do a check of the scavenge screens where the particles were found.
a) If you do not find particles, continue the engine in operation until you get
the analysis from the laboratory.
b) If you find particles which are less than 0.2 inch (5 mm), do these steps:
<1> Do a check of the scavenge screens after each flight until you get
the analysis from the laboratory.
<2> If you find non-magnetic particles which are more than 0.4 inch
(10 mm) during post flight chip detector inspections, limit the
engine operation to 10 cycles.
c) If you find non-magnetic particles which are more than 0.2 inch (5 mm),
limit the engine operation to 10 cycles.
<1> Do a post flight check of the chip detector and scavenge screens
until you get the analysis from the laboratory.
5) After you get the analysis from the laboratory, then do the applicable
corrective action for the type of material that you found as defined in
SUBTASK 79-00-00-240-001-F00.
NOTE: For more information on particle analysis, refer to the CFMI Non-
Destructive Test Manual, Part 9 and Part 10, or set, SPL-2450, CDROM
856A2683G01.
SUBTASK 79-00-00-420-001-F00
CAUTION: DO NOT INSTALL THE CHIP DETECTOR WITHOUT A PACKING.
INSTALLATION OF THE CHIP DETECTOR WITHOUT A PACKING CAN
CAUSE OIL LEAKAGE DURING ENGINE OPERATION AND A POSSIBLE
ENGINE FAILURE.
因为是公司的手册，不方便上传，我就把TASK CARD涉及的内容都复制了上来，希望对你有所帮助！
于 2012-08-10 11:18:03 连续回帖自动追加:
有点刷屏的嫌疑了，斑竹勿怪啊！
于 2012-08-10 11:18:12 连续回帖自动追加:
有点刷屏的嫌疑了，斑竹勿怪啊！ |
|
飞机空调组件如何提供适宜的气体
好书分享第六期：《机身与飞机部件》
✈️ 新航m9维修执照英语2025年8月开课啦 
引气系统故障小结
