Servicing of the Ram Air Turbine (RAT)

TASK 12-13-29-600-001-A
Servicing of the Ram Air Turbine (RAT)

FIN: 2GE

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	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)
No specific	Torque wrench: range to between 12.5 and 9.2 lbf.ft (1.69 and 1.25 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03ABB1)	Synthetic base Lubricating Oil-Turbine Engine Low Temp. -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195EB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	PACKING	AIPC 29-22-51-01-050

E. Referenced Information

REFERENCE	DESIGNATION
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-22-00-869-005-A	Extension of the Ram Air Turbine (RAT) on the Ground
TASK 29-22-00-869-006-A	Retraction of the Ram Air Turbine (RAT) on the Ground
Ram Air Turbine

3. Job Set-up
Subtask 12-13-29-860-050-A

A. Aircraft Maintenance Configuration
(1) Depressurize the Blue hydraulic system
(Ref. AMM TASK 29-10-00-864-003).
(2) Extend the Ram Air Turbine (RAT) (Ref. AMM TASK 29-22-00-869-005).
(3) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(4) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system:

in the cockpit on the hydraulic section 40VU of the overhead panel,
on the ground service panel of the Blue hydraulic system.

Subtask 12-13-29-010-050-A

B. Get Access
(1) Open the access door 195EB.

Subtask 12-13-29-865-050-A

C. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	HYD/RAT/CTL	2801GE	D14
** ON A/C NOT FOR ALL
49VU	HYD/RAT/CTL	2801GE	B13
** ON A/C ALL
106VU	CSM/G /EV/MAN/SPLY	6XE	B04
121VU	HYDRAULIC/RAT/SPLY/EXTN/SOL1	2803GE	P33

4. Procedure
Subtask 12-13-29-612-050-A

A. Oil Replenishing of the Lower RAT Gearbox

Ram Air Turbine

(1) Remove and discard the lockwire from the oil fill plug (1).
(2) Remove the oil fill plug (1).
(3) Fill the RAT gearbox with Synthetic base Lubricating Oil-Turbine Engine Low Temp. - (Material No.03ABB1) , until it spills from the fill port.
(4) Clean the oil fill plug (1) with a clean lint-free cloth Textile-Lint free Cotton - (Material No.14SBA1) .
(5) If necessary install a new AIPC 29-22-51-01-050 PACKING (2) on the fill plug (1).
(6) Install the fill plug (1) in the lower gearbox (3).
(7) TORQUE the fill plug (1) to between 12.5 and 9.2 lbf.ft (1.69 and 1.25 m.daN )

.
(8) Safety the oil fill plug (1) with the lockwire 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

5. Close-up
Subtask 12-13-29-865-051-A

A. 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
49VU	HYD/RAT/CTL	2801GE	D14
** ON A/C NOT FOR ALL
49VU	HYD/RAT/CTL	2801GE	B13
** ON A/C ALL
106VU	CSM/G /EV/MAN/SPLY	6XE	B04
121VU	HYDRAULIC/RAT/SPLY/EXTN/SOL1	2803GE	P33

Subtask 12-13-29-410-050-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 195EB.

Subtask 12-13-29-860-051-A

C. Put the aircraft back to its initial configuration.
(1) Retract the RAT (Ref. AMM TASK 29-22-00-869-006).
(2) Remove the SAFETY BARRIER(S).
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.03.31 22:55:16 UTC