Build-up of the APU (131-9(A))

TASK 49-11-11-400-005-A
Build-up of the APU (131-9(A))

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 310
FIN: 4005KM ** ON A/C NOT FOR ALL

1. Reason for the Job
This Task gives the APU build-up of the APU (131-9(A)) ready for installation in the aircraft.

NOTE: Items under paragraph 2.C. Expendable Parts include all items necessary for the APU build-up, not only expendable parts.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	Torque wrench: range to between 3.0 and 2.6 m.daN (22.12 and 19.17 lbf.ft )
No specific	Torque wrench: range to between 4.4 and 3.9 m.daN (32.45 and 28.76 lbf.ft )
98D49207527000	1	SUPPORT FRAME FOR APU WITH TROLLEY
OR	OR
98D49209001000	1	APU SUPPORT FRAME
OR	OR
98D49209002000	1	APU INST TROLLEY
OR	OR
98D49209002001	1	APU INST TROLLEY
FRDH141	1	ADAPTER-TORQUE

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABA1)	Synthetic base Lubricating Oil-Turbine Engine - -
(Material No.03ABB1)	Synthetic base Lubricating Oil-Turbine Engine Low Temp. -
(Material No.04SAB2)	Varnish Polyurethane-- Marking Structure
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14QEB1)	Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
310	FUSLG TAIL SECTION AFT OF AFT PRESS BHD

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
21	GENERATOR	AIPC 24-23-04-01-010
22	PREFORMED PACKING	AIPC 24-23-04-01-010
25	SEAL	AIPC 24-23-04-01-010
24	NUTS	AIPC 24-23-04-01-020
26	COUNTERSUNK SCREWS	AIPC 24-23-04-01-030
23	SEAL PLATE	AIPC 24-23-04-01-040
24	NUTS	AIPC 24-23-84-01-020
0	AUXILIARY POWER UNIT	AIPC 49-11-09-01-010
3	FWD APU MOUNT BRACKET (LH)	AIPC 49-11-09-01-040
9	FWD APU MOUNT BRACKET (RH)	AIPC 49-11-09-01-050
2	REAR APU MOUNT BRACKET	AIPC 49-11-09-01-060
1	BOLTS	AIPC 49-11-09-01-070
8	SETSCREW	AIPC 49-11-09-01-090
4	WASHER	AIPC 49-11-09-01-100
7	NUT	AIPC 49-11-09-01-110
5	NUT	AIPC 49-11-09-01-120
6	BONDING STRAP	AIPC 49-12-04-03-160

E. Referenced Information

REFERENCE	DESIGNATION
TASK 49-11-11-400-004-A	Installation of the Power Plant (APU) (131-9(A))
APU on Support Frame
Mount Brackets
AC-Generator
APU Generator Cover

3. Job Set-up
Subtask 49-11-11-941-053-A ** ON A/C NOT FOR ALL

A. Preparation for Build-up
(1) Remove the AIPC 49-11-09-01-010 AUXILIARY POWER UNIT (0) from the transport container.
(2) Install the APU on the 98D49207527000 SUPPORT FRAME FOR APU WITH TROLLEY98D49209001000 APU SUPPORT FRAME98D49209002000 APU INST TROLLEY98D49209002001 APU INST TROLLEY.

APU on Support Frame ** ON A/C NOT FOR ALL

4. Procedure
Subtask 49-11-11-420-062-A ** ON A/C NOT FOR ALL

A. Installation of the APU Mount Brackets

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) Installation the FWD left and the FWD right APU mount-brackets.

Mount Brackets ** ON A/C NOT FOR ALL

(a) Carefully put the 49110901-040FWD APU MOUNT BRACKET (LH)3 and the 49110901-050FWD APU MOUNT BRACKET (RH)9 in position on the mount pad at the LH/RH side of the APU gearbox. Make sure that the spigot is correctly engaged in the APU.
(b) Install the 4 AIPC 49-11-09-01-070 BOLTS (1) at each of the FWD APU mount bracket (3) and (9).
(c) TORQUE the bolts (1) to between 3.0 and 2.6 m.daN (22.12 and 19.17 lbf.ft )

.
(d) Safety the bolts (1) with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.
(e) Install the one AIPC 49-11-09-01-090 SETSCREW (8) at each of the FWD APU mount-bracket (3) and (9) and lock it in position with the AIPC 49-11-09-01-110 NUT (7).
(f) Remove any contamination from the contact areas of the bonding strap.
(g) Install one AIPC 49-12-04-03-160 BONDING STRAP (6), a AIPC 49-11-09-01-100 WASHER (4) and a AIPC 49-11-09-01-120 NUT (5) on each setscrew (8).
(h) Apply Varnish Polyurethane-- Marking Structure (Material No.04SAB2) on the nuts (5) and (7) and the setscrews (8).
(2) Install the rear APU mount-bracket.

Mount Brackets ** ON A/C NOT FOR ALL

(a) Carefully put the AIPC 49-11-09-01-060 REAR APU MOUNT BRACKET (2) in position on the rear mount pad.
(b) Attach the rear APU mount-bracket (2) to the APU with the 4 AIPC 49-11-09-01-070 BOLTS (1).
(c) TORQUE the bolts (1) to between 3.0 and 2.6 m.daN (22.12 and 19.17 lbf.ft )

.
(d) Safety the bolts (1) with 14QEB1Wire-Locking Dia: 0.6 mm CRES Nickel Alloy -.

Subtask 49-11-11-420-063-A ** ON A/C NOT FOR ALL

B. Installation of the APU Generator

AC-Generator ** ON A/C NOT FOR ALL

(1) Install the seal plate (23):
(a) Lubricate the seals (29) and (30) of the new AIPC 24-23-04-01-040 SEAL PLATE (23) with a thin layer of the Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or the Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(b) Put the seal plate (23) and the seal (29) for the oil scavenge port in the 6 o'clock position on the flange of the APU generator (21).
(c) Make sure that the dowel pin (28) engages correctly with the pilot hole (27).
(d) Lubricate the new AIPC 24-23-04-01-030 COUNTERSUNK SCREWS (26) with the Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or the Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) and install them.
(2) Install the APU generator (21):
(a) Lubricate the new AIPC 24-23-04-01-010 PREFORMED PACKING (22) and the new AIPC 24-23-04-01-010 SEAL (25) with a thin layer of the Synthetic base Lubricating Oil-Turbine Engine - - (Material No.03ABA1) or the Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) .
(b) If the generator cover (1) is installed on the APU:

APU Generator Cover ** ON A/C NOT FOR ALL

1 Remove and discard the nuts (2) from the generator cover (1).

NOTE: The nuts (2) are only for the transportation and the storage of the APU.

2 Remove the generator cover (1).

WARNING: DO NOT CAUSE DAMAGE TO THE THREADS OF THE SET SCREWS WHEN YOU REMOVE OR INSTALL THE GENERATOR. THE GENERATOR WEIGHS APPROXIMATELY 23kg (50.7lb).

Install the seal (25) on the generator splined drive-shaft and the preformed packing (22) on the generator mount flange.

(d) Install the AIPC 24-23-04-01-010 GENERATOR (21) on the AIPC 24-23-04-01-020 NUTS (24) or the AIPC 24-23-84-01-020 NUTS (24) and turn it clockwise to engage the slots.
(e) Make sure that the dowel pin (28) fully engages in the mounting flange of the accessory drive gearbox.
(f) TORQUE the nuts (24) as follows:

For P/N NAS1291C6M to between 3.0 and 2.6 m.daN (22.12 and 19.17 lbf.ft )
For P/N MS21043-6 to between 4.4 and 3.9 m.daN (32.45 and 28.76 lbf.ft ) .

(g) TORQUE the nuts (24) behind the generator terminal with the FRDH141 ADAPTER-TORQUE.
(h) Clean the nuts (24) of the APU generator with the Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(i) Use the Varnish Polyurethane-- Marking Structure (Material No.04SAB2) to make marks on the generator nuts (24) that you tightened.

5. Close-up
Subtask 49-11-11-860-067-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the APU (Ref. AMM TASK 49-11-11-400-004).

[Rev.10 from 2021] 2026.04.01 01:26:47 UTC