(b)
If you find a large quantity of metal particles smaller than 1.50 mm (0.0590 in.) , do the following steps:
Magnetic Drain Plug Inspection
Figure 202/TASK 49-91-42-991-004
CES
WARNING : OBEY THE MANUFACTURER'S INSTRUCTIONS WHEN YOU USE
_______ THIS/THESE MATERIAL/S. USE PROTECTIVE CLOTHING, RUBBER GLOVES, GOGGLES AND A MASK.
WARNING : MAKE SURE THAT THERE IS A GOOD FLOW OF AIR THROUGH THE
_______ WORK AREA WHEN YOU USE SPECIAL MATERIALS. IF YOU GET ONE OF THESE MATERIALS ON YOUR SKIN, IN YOUR MOUTH OR IN YOUR EYES : -FLUSH IT AWAY WITH A FLOW OF CLEAN WATER FOR BETWEEN 10 AND 15 MINUTES. -GET IMMEDIATE MEDICAL AID IF IRRITATION OCCURS. DO NOT BREATHE THE FUMES FROM THE MATERIAL. DO NOT SMOKE WHEN YOU USE THE MATERIAL. DO NOT USE THE MATERIAL NEAR A FLAME, SPARKS OR SOURCES OF HEAT. THESE MATERIALS ARE DANGEROUS : THEY ARE POISONOUS, FLAMMABLE AND SKIN IRRITANTS.
CAUTION : DO NOT CLEAN THE OIL FILTER ELEMENTS. YOU MUST DISCARD
_______ THEM AND INSTALL NEW FILTER ELEMENTS. IF YOU CLEAN THE OIL FILTER ELEMENTS, YOU CAN CAUSE DAMAGE TO THEM. THIS WILL CAUSE DAMAGE TO THE APU.
1 Clean the magnetic element in the CLEANING AGENTS (Material
_
No. 11-002).
2 Dry the magnetic element with a clean, lint-free cloth.
_
3 Replace the oil filters (Ref. TASK 49-91-41-920-002) and
_
(Ref. TASK 49-91-41-920-001).
4 Install the magnetic element (Ref. TASK 49-91-42-400-002).
_
5 Do the servicing to change the oil in the APU oil reservoir
_
(Ref. TASK 49-90-00-600-005).
6 APU operation
_
a Start the APU (Ref. TASK 49-00-00-860-005) and operate it
_
for 15 minutes.
b Do the APU shutdown procedure (Ref. TASK 49-00-00-860-006).
_
7 Remove the magnetic element (Ref. TASK 49-91-42-000-002).
_
8 Remove the oil filters for inspection (Ref. TASK 49-91-41-920-
_ 001) and (Ref. TASK 49-91-41-920-002).
9 Inspect the magnetic element and the oil filter elements under
_ a source of white light for metal particles.
a If you find any metal particles on the magnetic element or
_
the oil filter elements:
-
Install the magnetic element in the drain plug (Ref. TASK 49-91-42-400-002).
-
Install the oil filters (Ref. TASK 49-91-41-920-001) and (Ref. TASK 49-91-41-920-002).
-Replace the APU (Ref. TASK 49-11-11-000-003) and (Ref. TASK 49-11-11-400-003).
b If you do not find any metal particles on the magnetic
_ element or in the oil filter elements :
-
Install the oil filters (Ref. TASK 49-91-41-920-001) and (Ref. TASK 49-91-41-920-002).
-
Install the magnetic element in the drain plug (Ref. TASK 49-91-42-400-002).
NOTE : Make entries in the logbook:
____
-that a check for metal particles was made, and what the result of the check was.
(c) If you find metal particles larger than 1.50 mm (0.0590 in.):
1 Install the magnetic element in the drain plug (Ref. TASK 49-
_
91-42-400-002).
2 Replace the APU (Ref. TASK 49-11-11-000-003) and (Ref. TASK
_
49-11-11-400-003).
5. Close-up
________
Subtask 49-91-42-410-053
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-410-001).
(3)
Remove the access platform(s). Subtask 49-91-42-865-059
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD
Subtask 49-91-42-860-054
C. Aircraft Maintenance Configuration
(1)
Pressurize the reservoirs of the hydraulic systems.
(Ref. TASK 29-14-00-614-002).
(2)
De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
(3)
Remove the warning notice(s).
VALVE - PRESSURE RELIEF - REMOVAL/INSTALLATION
______________________________________________ TASK 49-91-43-000-002 Removal of the Pressure Relief Valve (APS 3200) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
WARNING : DO NOT LET OIL STAY ON YOUR SKIN FOR A LONG TIME AS IT CAN CAUSE
_______ INJURY.
WARNING : BE CAREFUL WHEN YOU DRAIN THE ENGINE OIL AND/OR LOOSEN THE FILLER
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