(6)
Install the LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT (98D27504030001) to lock the right slat transmission.
(7)
Put a container in position below the Power Control Unit (PCU) (1).
4. Procedure
_________ (Ref. Fig. 401/TASK 27-84-52-991-001) Subtask 27-84-52-020-050
A. Removal of the Pressure-Off Brake CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN
_______ YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU USE THE SECOND WRENCH, YOU WILL NOT LOOSEN OR TIGHTEN THE UNION TOO MUCH.
NOTE : The removal procedure for the pressure-off brake at the valve
____ block 25CV is given. The removal procedure for the pressure-off brake at the valve block 26CV is almost the same. The differences in the procedures are given.
Pressure-Off Brake
Figure 401/TASK 27-84-52-991-001
1EFF : ALL 1 27-84-52 Page 404
1 1 Feb 01/98
1 1
1CES 1
(1)
Remove the pressure-off brake (POB) (41) together with the hydraulic motor (7) and the block assembly (23) from the differential gearbox (40).
(a)
Disconnect and remove the hydraulic lines (11) from the valve block assembly (23).
(b)
Remove and discard the tie wrap (9) and disconnect the seal drain line (10).
(c)
Disconnect and remove the case drain line (8) from the hydraulic motor (7).
(d)
Install the blanking caps on the open line ends (8),(10),(11).
(e)
Install the blanking plugs in the ports of the PCU (1).
(f)
Disconnect the electrical connector (22) from the valve block assembly (23).
(g)
Put blanking caps on the disconnected electrical connectors and receptacles.
(h)
Support the POB (41), the hydraulic motor (7) and the valve block assembly (23).
(i)
Remove the bolts (3) and the washers (2).
(j)
Remove the nuts (24) and the washers (25) from the studs (42).
(k)
Remove the POB (41) together with the hydraulic motor (7) and the valve block assembly (23).
(2)
Remove the POB (41) from the hydraulic motor (7) and the valve block assembly (23).
(a)
Remove the bolts (6) and the washers (5).
(b)
Carefully remove the hydraulic motor (7) and the POB (41) from the transfer tubes (14),(33) on the valve block assembly (23).
(c)
Remove and discard the O-ring (4).
(3)
Remove and discard the O-rings (13),(20), the back-up rings (12),(15) and the locking rings (21) from the transfer tubes (14).
(4)
Remove and discard the O-rings (32),(35), the back-up rings (31),(34)
and the locking ring (30) from the transfer tube (33).
TASK 27-84-52-400-001
Installation of the Pressure-Off Brake of the Slat Power Control Unit
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific container
No specific tie wrap
No specific warning notice
No specific access platform 2.2 m (7 ft. 3 in.)
R No specific Torque Wrench : range 0.00 to 1.20 m.daN R (0.00 to 9.00 lbf.ft) No specific Torque Wrench : range 0.20 to 3.60 m.daN
(2.00 to 26.00 lbf.ft) No specific Torque Wrench : range 1.00 to 10.00 m.daN
(8.00 to 75.00 lbf.ft) 98D27504030001 1 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT 98D27803000000 1 LOCKING TOOL - FLAP/SLAT CONTROL LEVER B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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