Installation of the Starter Air Control Valve [PW11]

TASK 80-11-03-400-801-A
Installation of the Starter Air Control Valve

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.

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

ZONE: 400
FIN: 4005KS ** ON A/C NOT FOR ALL

1. Reason for the Job
Use this procedure to install the starter air control valve.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	COVER - PROTECTION
No specific	1	MALLET - SOFT FACE
No specific	1	PLIERS - JAWED, SOFT
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 19.8 and 16.2 lbf.in (0.22 and 0.18 m.daN )
No specific	Torque wrench: range to between 125 and 115 lbf.in (1.41 and 1.30 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P03-001)	lubricant, aircraft turbine engine, (synthetic base)
(Material No.P05-395)	beeswax (was: P06-015)

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR, 452AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	SEAL	AIPC 36-11-86-20-270

E. Referenced Information

REFERENCE	DESIGNATION
TASK 71-00-00-720-809-A	Test No. 2 - Engine Motor Leak Test (Dry Method)
TASK 71-00-00-860-832-A	Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC
TASK 71-13-00-010-802-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-802-A	Closing of the Fan Cowl Doors
TASK 73-25-34-400-802-A	Installation of the Engine Interface Unit (EIU)
TASK 78-30-00-040-805-A	Deactivation of the Thrust Reverser System for Ground Maintenance
TASK 78-30-00-440-805-A	Reactivation of the Thrust Reverser System after Ground Maintenance
TASK 78-36-00-010-802-A	Opening of the Thrust Reverser Cowl-Doors
TASK 78-36-00-410-802-A	Closing of the Thrust Reverser Cowl-Doors
TASK 80-11-49-400-802-A	Installation of the Lower Starter Air Duct
Install the Starter Air Control Valve

3. Job Set-up
Subtask 80-11-03-941-051-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: IF IT IS NECESSARY TO ENERGIZE THE AIRCRAFT FOR A MAINTENANCE WORK WHILE YOU DO THIS MAINTENANCE PROCEDURE, MAKE SURE THAT ONLY EXTERNAL POWER IS USED. THE USE OF APU OR ENGINE POWER CAN CAUSE PRESSURIZED AIR LEAKAGE IN THE PNEUMATIC SYSTEM, AND INJURY CAN OCCUR.

(1) Make sure that you did the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832).
(2) On OVERHEAD CTL & IND panel 25VU:

Make sure that the ON legend of the APU MASTER SW pushbutton switch is off.
Make sure that the WARNING NOTICE(S) is in position to tell persons not to start the APU.

(3) On AIR COND panel 30VU:

Make sure that the APU BLEED pushbutton switch is released (the ON legend is off).
Make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the pneumatic system.
Make sure that the X-BLEED selector switch is in the SHUT position.

(4) On the HP ground connector, make sure that the WARNING NOTICE(S) is in position to tell persons not to pressurize the pneumatic system.

Subtask 80-11-03-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.

Subtask 80-11-03-040-051-A ** ON A/C NOT FOR ALL

C. Deactivation of the Thrust Reverser for Ground Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for ground maintenance (Ref. AMM TASK 78-30-00-040-805).

Subtask 80-11-03-010-053-A ** ON A/C NOT FOR ALL

D. Get Access
(1) Make sure that the right thrust reverser cowl-doors are open (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR.

4. Procedure
Subtask 80-11-03-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Starter Air Control Valve
(1) Removal of the protection covers:

CAUTION: REMOVE THE PROTECTION COVERS FROM THE OPENINGS AS NECESSARY TO PREVENT ENGINE DAMAGE.

CAUTION: WIPE CLEAN ALL PARTS AND TOOLS AS NECESSARY TO REMOVE UNWANTED DEBRIS AND PREVENT DAMAGE TO THE ENGINE.

(a) Make sure that you remove all the necessary COVER - PROTECTION to prevent damage to the engine.
(2) Install the starter air control valve (1) as follows:
(a) Attach the new AIPC 36-11-86-20-270 SEAL (3) to the upper starter air duct with P05-395beeswax (was: P06-015).
(b) Apply P03-001lubricant, aircraft turbine engine, (synthetic base) to the threads of the two V-band coupling (2).
(c) Put the V-band coupling (2) on the upper side of the starter air control valve (1).
(d) Put the starter air control valve (1) on the upper air duct and align the notches.
(e) Move the V-band coupling (2) to engage the duct and the starter air control valve (1).
1 Turn the coupling with the threads on the V-band coupling (2) pointed out.
(f) Tighten the V-band coupling (2) to hold the starter air control valve (1) in position.
(g) Torque the V-band clamp (2) as follows:
1 TORQUE the V-band clamp (2) to between 125 and 115 lbf.in (1.41 and 1.30 m.daN )

.
2 Tap the clamp retainer ring at several places around the perimeter lightly with a MALLET - SOFT FACE.
3 Torque the V-band clamp (2) again until the same indication holds.
(3) Install the lower starter air duct (Ref. AMM TASK 80-11-49-400-802).
(4) Connect the wiring harness to the starter air control valve (1) as follows:
(a) Examine, align and engage the connector.
(b) Push lightly inward on the connector while tightening the coupling ring.
(c) Use the PLIERS - JAWED, SOFT and tighten the connector against the receptacle.
(d) While you tighten, push the connector in and from side to side.
(e) Make sure that you can feel the ratchet feature.
(f) Tighten the connector until the PLIERS - JAWED, SOFT slip on the connector ring.
(5) Connect the cooling air hose to the starter air control valve (1) as follows:
(a) Engage the cooling air hose on the starter air control valve (1).
(b) Install the hose clamp (15) and cooling air hose on the starter air control valve (1).
(c) TORQUE the hose clamp (15) to between 19.8 and 16.2 lbf.in (0.22 and 0.18 m.daN )

max.
(6) Examine the assembly for unwanted objects, damage and correct assembly.

5. Close-up
Subtask 80-11-03-860-050-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the right thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
452AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
462AR.

Subtask 80-11-03-440-050-A ** ON A/C NOT FOR ALL

B. Do the reactivation of the thrust reverser system after ground maintenance (Ref. AMM TASK 78-30-00-440-805).

Subtask 80-11-03-410-050-A ** ON A/C NOT FOR ALL

C. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Remove the WARNING NOTICE(S).
(3) Make sure that all the circuit breakers shown in the paragraph Procedure of the engine interface unit installation are closed. If they are not, close them in the recommended sequence
(Ref. AMM TASK 73-25-34-400-802).

Subtask 80-11-03-720-050-A ** ON A/C NOT FOR ALL

D. Tests
(1) Do the test N°2 - leak check (engine motor - dry method) (Ref. AMM TASK 71-00-00-720-809).

[Rev.10 from 2021] 2026.04.01 03:45:13 UTC