(b)
Put blanking plugs on the disconnected line ends. NOTE : Watch that there is sufficient clearance between the APU
____ and exhaust-muffler drain pipe when the APU is removed.
(8) Disconnection of the Exhaust Muffler (Ref. Fig. 401/TASK 49-11-11-991-010)
(a) Removal of the Lockwire: WARNING : CUT, REMOVE AND DISCARD THE LOCKWIRE AS YOU DO THE
_______ TASK. LOOSE LOCKWIRE CAN CUT OR BLIND YOU.
-Remove and discard the lockwire between the studs on the insulation blanket (34) and (33) and the studs on the nozzle assy (31).
(b)
Remove and discard the lockwire between the two halves of the insulation blanket (33) and (34).
(c)
Remove the two halves of the insultion blanket (33) and (34).
(d)
Disconnect the exhaust coupling clamp (30) and push the exhaust muffler rearwards.
NOTE : Make sure that the clearance between the APU exhaust and
____ hot nozzle assy flange is sufficient to prevent damage when the APU is removed. Make sure that the exhaust muffler stays in position when the APU is removed.
(e) Put blanking covers on the hot nozzle assy flange (32).
(9) Disconnection of the Bonding Straps (Ref. Fig. 404/TASK 49-11-11-991-011)
(a)
Remove the nuts (43) and the washers (42) from the stud (40) at the LH and RH FWD tie-rods.
(b)
Disconnect the bonding straps (41) from the LH and RH FWD mount brackets (46).
(c)
Temporarily install the nuts (43), the washers (42) to the studs
(40) on the LH and RH FWD mount bracket (46).
(d)
To prevent damage when the APU is removed attach the bonding straps (41) with tape to the APU tie-rods.
APU Mounts and Tie Rods
Figure 404/TASK 49-11-11-991-011
CES R **ON A/C 107-107, 151-199, 204-210,
Subtask 49-11-11-020-057-A
A. Disconnection of the APU
(1) Disconnection of the APU Bleed-Air Duct Elbow
(a) Loosen the clamp (6)
(Ref. Fig. 401/TASK 49-11-11-991-010)
NOTE : Let the clamp (6) stay loosely on the bleed-air duct of
____
the APU.
(b) Put the blanking caps on the openings of the bleed-air duct elbow
(7) and the bleed-air duct of the APU.
(2)
Remove the oil-cooler outlet duct and put blanking plugs on the oil cooler outlet and oil cooler duct (Ref. TASK 49-52-41-000-003).
(3)
Disconnect the APU Fuel Line with Vent and Drain Valve from the APU WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
CAUTION : PUT PLASTIC CAPS OR PLUGS ON ALL FUEL AND/OR LUBRICATION
_______ SYSTEM COMPONENTS AND LINES. IF YOU USE TAPE, CLOTH, OR METAL CAPS ON THEM, YOU CAN DAMAGE THE APU.
CAUTION : YOU MUST USE TWO WRENCHES AND HOLD THE COMPONENT WHEN YOU
_______ REMOVE/INSTALL THE PIPE COUPLINGS AND/OR UNIONS. THIS PREVENTS DAMAGE TO THE COMPONENT.
(a)
Put the container in position below the fuel control unit and the vent and drain valve (21).
(b)
Remove the blanking cap (22) from the LP fuel inlet vent and drain valve (21).
(c)
Install the ADAPTER - VENT AND DRAIN VALVE, APU to vent and drain valve (21).
(d)
Drain the unwanted fuel into the container.
(e)
Remove the ADAPTER - VENT AND DRAIN VALVE, APU from the vent and drain valve.
(f)
Install the blanking cap (22).
(g)
Removal of the Lockwire: WARNING : CUT, REMOVE AND DISCARD THE LOCKWIRE AS YOU DO THE
_______ TASK. LOOSE LOCKWIRE CAN CUT OR BLIND YOU.
-Remove and discard the lockwire and disconnect the vent and drain valve (21) from the Union Assy (20).
(h)
Put blanking plugs on the disconnected line ends.
(i)
Put the main fuel inlet-pipe in the stowage bracket attached to the firewall of the APU compartment. This will prevent damage during the APU removal.
(j)
Remove the container below the vent and drain valve (21).
(4) Disconnection of the Electrical Harness (Ref. Fig. 402/TASK 49-11-11-991-012)
(a)
Disconnect the electrical connections (50) P1 , (51) P2 and (55) P3 from the front fire-wall of the APU compartment.
(b)
Put blanking plugs on all electrical connectors.
(c)
Remove the bolts (54) from the brackets at the APU compartment front fire-wall.
NOTE : Hold the spacers (52) in position when the bolts (54) are
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