(b)
Clean the component interface and/or the adjacent area.
(c)
Do an inspection of the component interface and/or the adjacent area.
(d)
Make sure that mounting flanges of the bleed-air duct elbow (3) is positioned, without forces in the X, Y and Z direction, 0 +2 -2 mm (0.0000 +0.0787 -0.0787 in.) to the APU interface.
NOTE : If necessary adjust the position with the rods.
____
(e)
Put the clamp (2) over the mounting flanges of the bleed-air duct elbow (3) and APU bleed-air duct (1).
(f)
TORQUE the clamp (2) to between 0.4 and 0.5 m.daN (35.39 and
44.24 lbf.in).
R **ON A/C 001-003, 051-099, 401-499,
Subtask 49-11-11-865-052
F. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD, 1KT, 1QC, 2QC, 3QC, 1QF, 2QF, 1WF, 2WF, 3WF, 4WF, 30WF, 1WG.
Subtask 49-11-11-740-054
G. BITE test of the ECB
(1)
Do the self test of the ECB (Ref. TASK 49-00-00-710-001).
(2)
Update the APU hours and cycles in the DMU. NOTE : This workstep is only necessary if the TSO of the installed
____ APU is > 0 and operator wants to monitor TSO.
(a) Use the MCDU to do the update of the APU hours and cycles (Ref. TASK 31-36-00-740-004).
(3) Bleeding of the APU fuel line
(a)
Bleed the APU fuel line (Ref. TASK 28-22-00-710-001). Subtask 49-11-11-410-052
H.
Installation and closing of the APU access doors
(1) If removed install the APU access doors 315AL, 316AR (Ref. TASK 52-41-21-400-001) and (Ref. TASK 52-41-22-400-001).
(2)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001). Subtask 49-11-11-710-051
J.
Operational Test
CAUTION : DO NOT START THE APU WITH ACCESS DOORS 315AL AND 316AR
_______ OPEN/REMOVED. THE APU FIRE EXTINGUISHER SYSTEM IS NOT SUFFICIENT TO EXTINGUISH A FIRE IF THE ACCESS DOORS 315AL AND 316AR ARE OPEN/REMOVED.
CAUTION : OBEY THE SAFETY PRECAUTIONS.
_______ CAUTION : MAKE SURE THAT THE FUEL-FEED SYSTEM DOES NOT HAVE ANY LEAKS.
_______
LEAKS IN THE FUEL-FEED SYSTEM CAN CAUSE A FIRE.
CAUTION : MAKE SURE THAT THE APU OIL RESERVOIR IS FILLED BEFORE YOU START
_______ THE APU. IF YOU OPERATE THE APU WITHOUT OIL, DAMAGE WILL OCCUR.
(1) Do the operational test of the APU (Ref. TASK 49-00-00-710-004). NOTE : Do the ground air-preconditioning with the APU for a minimum
____ of 10 minutes during the first run of an APU after its installation. If you smell fumes in the cockpit and/or passenger compartment, remove the contamination from the air conditioning system (Ref. TASK 21-00-00-615-001), (Ref. TASK 21-00-00-615-002) and (Ref. TASK 21-00-00-100-001).
Subtask 49-11-11-865-056
K. Open, safety and tag this(these) circuit breaker(s):
1KD, 2KD
Subtask 49-11-11-010-053
L. Open the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-010-001). Subtask 49-11-11-210-053
M. Inspection of the APU after shutdown WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT
_______
BURNS WHEN YOU DO THE MAINTENANCE TASK(S).
(1) Carefully examine the APU, the vent and drain valve connections and the drain lines for fuel and/or oil leakage.
NOTE : Leaks are not permitted.
____
(2)
Do a check of the magnetic chip detector for unwanted metal (Ref. TASK 49-91-42-200-001).
(3)
Do a check of the APU oil level on the oil sight glass. If necessary add oil until the oil level reaches the full mark. (Ref. TASK 49-90-00-600-001).
5. Close-up
________ Subtask 49-11-11-410-053
A. Close Access
(1) Apply a thin layer of STORAGE PRESERVATION (Material No. 15-005) to the following surfaces and components:
WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
(a)
The brackets and the tie-rod ends on the top firewall of the APU compartment.
(b)
The APU mount brackets and the vibration isolators.
(c)
Tie rods and brackets of the APU bleed-air duct.
(d)
The bolts of the V-clamps attaching the bleed air duct to the APU.
