Installation of the Rotor Active Clearance Control (RACC) Valve [CFMI]

TASK 75-23-10-400-001-A
Installation of the Rotor Active Clearance Control (RACC) Valve

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 1M(3 FT)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 30 and 23 lbf.in (0.34 and 0.26 m.daN )
No specific	Torque wrench: range to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
No specific	Torque wrench: range to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )
No specific	Torque wrench: range to between 230 and 210 lbf.in (2.60 and 2.37 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2101)	graphite grease
(Material No.CP5070)	vaseline
(Material No.CP8001)	lockwire 0.032 in. (0.8 mm) dia.
(Material No.CP8002)	lockwire 0.032 in. (0.8 mm) dia

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
80	O-RINGS	AIPC 75-23-10-01-020
100	O-RING	AIPC 75-23-10-01-090
110	O-RINGS	AIPC 75-23-10-01-150
120	O-RINGS	AIPC 75-23-10-01-160
440	GASKETS	AIPC 75-23-10-01-190

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 70-21-00-918-001-A	Seals (Preformed Packings and O-rings) and Gaskets
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 73-29-00-710-040-A-01	FADEC Ground Test Without the CFDS
TASK 73-29-00-710-040-A	Operational Test of the FADEC on the ground (with Engine Motoring)
TASK 73-29-00-710-040-A-01	FADEC Ground Test Without the CFDS
TASK 73-29-00-710-040-A-02	Operational Test of the FADEC on the Ground (with Engine non Motoring)
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Rotor Active Clearance Control Valve sheet 1 of 4
Rotor Active Clearance Control Valve (Pre SB CFM56-5 75-007) sheet 2 of 4
Rotor Active Clearance Control valve sheet 4 of 4
Rotor Active Clearance Control Valve (Post SB CFM56-5 75-007) sheet 3 of 4

3. Job Set-up
Subtask 75-23-10-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) is in position to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 75-23-10-865-059-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 75-23-10-010-053-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 75-23-10-040-051-A ** ON A/C NOT FOR ALL

D. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 75-23-10-210-051-A ** ON A/C NOT FOR ALL

A. Do an inspection of the gasket assembly (440) (Ref. AMM TASK 70-21-00-918-001).
(1) Replace the C-seals in the gasket assemblies (130, 200) (Ref. AMM TASK 70-21-00-918-001).

Subtask 75-23-10-420-050-A ** ON A/C NOT FOR ALL

B. Install the RACC valve as follows:
(1) Remove the blanking caps from the electrical receptacles, open ports of the RACC valve (10), open ends of the upper and lower air tubes (40, 50) and the open ports of the HPC case.
(2) Temporarily install the insulation blanket (210) around the RACC valve (10).

NOTE: Do not wirelock the area around the electrical connectors of the insulation blanket (210) at this time.

(3) Put the RACC valve (10) in position between the upper and lower RACC air tubes (40, 50).
(4) Lubricate the bolts (150, 170) that attach the RACC valve (10) to the flange with graphite grease (Material No.CP2101)
(5) Loosely install the bolts (150, 170) and the nuts (160, 180) that attach the RACC valve (10) to the flange.

Install the bolts (150, 170) with the heads forward.
Do not torque the nuts (160, 180) at this time.

Subtask 75-23-10-420-051-A ** ON A/C NOT FOR ALL

C. Install the air tubes as follows:
(1) Install the seals (130, 200) between the RACC valve (10) and the upper and the lower air tubes (40, 50).

NOTE: The old seals (130, 200) can be used again if there is no damage.

(2) Install the Vee-band clamps (140, 190) between the RACC valve (10) and the upper and the lower air tubes (40, 50).
(3) Install the Vee-band clamps (140, 190) with the nuts outboard and aft.
(4) TORQUE the nuts (160, 180) that attach the RACC valve (10) to the flange to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
(5) TORQUE the nuts that attach the Vee-band clamps (140, 190) to the RACC valve (10) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia
(6) TORQUE the bolts that attach the upper air tubes (40) to the fifth stage bleed valve to between 230 and 210 lbf.in (2.60 and 2.37 m.daN )

and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
(7) TORQUE the bolts that attach the lower air tube (50) to the fan frame to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

Subtask 75-23-10-420-052-A ** ON A/C NOT FOR ALL

D. Install the fuel manifold as follows:
(1) Remove the protective covers from the fuel manifolds (60).
(2) Lubricate the new AIPC 75-23-10-01-150 O-RINGS (110) and the new AIPC 75-23-10-01-160 O-RINGS (120) with vaseline (Material No.CP5070) .
(3) Install the new O-rings (110, 120) in the fuel manifold (60).
(4) Loosely install the fuel manifold (60) on the RACC valve (10).
(5) Lubricate the fluid bolts (90) and the new AIPC 75-23-10-01-090 O-RING (100) with vaseline (Material No.CP5070) and install the new O-ring (100) on the fuel bolts (90).
(6) Install the fuel bolts (90) into the manifolds (60). TORQUE the fuel bolts to between 30 and 23 lbf.in (0.34 and 0.26 m.daN )

.
(7) Tighten the fuel manifold (60) by hand. Wirelock the fuel manifolds (60) with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia
(8) Lubricate the new AIPC 75-23-10-01-020 O-RINGS (80) for the drain connectors (70) with vaseline (Material No.CP5070)
(9) Install the new O-rings (80) in the drain connectors (70).
(10) Loosely install the drain connectors (70).
(11) Install the LPTCC fuel manifold as follows:
(a) Install the new AIPC 75-23-10-01-190 GASKETS (440) on both sides of the fuel manifold (480). And, install the fuel manifold (60) and the LPTCC fuel manifold (450) with the bolts (430) and the nuts (420). TORQUE the nuts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(12) Loosely install the clamps (300) that attach the fuel manifolds (60) to the upper bracket with the bolt (290) and the nut (280).

Install the clamps (300) with the loops forward.
Install the bolt (290) with the head outboard.
Do not torque the nut (280) at this time.

(13) Loosely install the clamps (360) that attach the fuel manifolds (60) to the VSV drain bracket with the bolts (340) and the nuts (350).

Install the clamps (360) with the loops forward and outboard.
Install the bolts (340) with the heads outboard.
Do not torque the nuts (350) at this time.

(14) Loosely install the clamps (400, 410) that attach the fuel manifolds (60) to the lower air tube (50) with the bolt (370), washer (380) and nut (390).

Install the clamp (410) with the loop inboard and aft.
Install the clamp (400) with the loop inboard and forward and on top of the clamp (410).
Install the washer (380) under the head of the bolt (370).
Install the bolt (370) with the head outboard.
Do not torque the nut (390) at this time.

(15) TORQUE the nut (280) that attaches the clamps (300) and the fuel manifolds (60) to the upper bracket to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(16) TORQUE the nuts (350) that attaches the clamps (360) to the VSV drain bracket to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(17) TORQUE the nut (390) that attaches the clamps (400, 410) to the lower air tube (50) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(18) Loosely connect the coupling nut (20) to the drain connector (70).
(19) Loosely connect coupling nut on the fuel drain manifold (20) to the nipple on the VSV actuator drain manifold.
(20) Loosely install the clamp (260) that attaches the fuel drain manifold (20) to the tabs on the fuel manifolds (60) with the bolt (220) and nut (230).

Install the clamp (260) with the loop outboard.
Install the bolt (220) with the head outboard.
Do not torque the nut (230) at this time.

(21) Loosely install the clamp (270) that attaches the fuel drain manifold (20) to the tabs on the fuel manifolds (60) with the bolt (240) and nut (250).

Install the clamp (270) with the loop outboard.
Install the bolt (240) with the head outboard.
Do not torque the nut (250) at this time.

(22) Loosely install the clamp (330) that attaches the fuel drain manifold (20) to the LPT cooling tube with the bolt (310) and nut (320).

Install the clamp (330) with the loop outboard and aft.
Install the bolt (310) with the head aft.
Do not torque the nut (320) at this time.

(23) Loosely connect the coupling nut of the fuel drain tube (30) to the drain connector (70). Do not torque the coupling nut at this time.
(24) Loosely connect the coupling nut of the fuel drain tube (30) to the nipple on the drain manifold (20). Do not torque the coupling nut at this time.
(25) Tighten the drain connectors (70) by hand. Wirelock the knurled nuts with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
(26) TORQUE these nut as follows:
(a) TORQUE the fuel drain manifold (20) and the fuel drain tube (30) coupling nuts to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(b) TORQUE the coupling nut of the fuel drain tube (30) to the nipple on the fuel drain manifold (20) to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(c) TORQUE the fuel drain manifold coupling nut (20) to the nipple on the VSV actuator drain manifold to between 150 and 135 lbf.in (1.70 and 1.53 m.daN )

.
(d) TORQUE the nuts (230, 250) that attach the clamps (260, 270) to the fuel manifolds (60) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(e) TORQUE the nut (320) that attaches the clamp (330) to the LPT cooling tube bracket to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

.
(f) TORQUE the nuts that attach the clamps to the lower air tube (50) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
(g) TORQUE the nuts that attach the clamps to the upper air tube (40) to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )

and wirelock with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.
(27) Connect the electrical connectors, Channel A (5) and Channel B (15) to the RACC valve (10). Tighten the connectors with your hand plus one-eighth of a turn.
(28) Wirelock the insulation blanket (210) by hand with CP8001lockwire 0.032 in. (0.8 mm) dia. or CP8002lockwire 0.032 in. (0.8 mm) dia.

Subtask 75-23-10-410-052-A ** ON A/C NOT FOR ALL

E. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close thrust reverser cowl doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

Subtask 75-23-10-440-050-A ** ON A/C NOT FOR ALL

F. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041)

Subtask 75-23-10-865-056-A ** ON A/C NOT FOR ALL

G. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
FOR FIN: 1000EM2 (ENGINE2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26

Subtask 75-23-10-710-050-A ** ON A/C NOT FOR ALL

H. Do a FADEC ground test (Ref. AMM TASK 73-29-00-710-040).

NOTE: As an alternative procedure, you can do this operational test without the CFDS (Ref. AMM TASK 73-29-00-710-040).

5. Close-up
Subtask 75-23-10-410-051-A ** ON A/C NOT FOR ALL

A. Close fan cowl doors: (Ref. AMM TASK 71-13-00-410-040)
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 75-23-10-862-050-A ** ON A/C NOT FOR ALL

B. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 03:09:17 UTC