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R  door opening. 
R  (5) Install the PIN RIGGING FLAPS (98D27504006000) at the left and right 
R  flap track positions 1. 
R  (6) Install the LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT 
R  (98D27504030001) at the left torque shaft (6256CM) to lock the flap 
R  transmission outboard of the left angle gearbox (6253CM) (Ref. TASK 
R  27-50-00-400-003). 
R  (7) Install the LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT 
R  (98D27504030001) at the right torque shaft (6206CM) to lock the flap 
R  transmission outboard of the right angle gearbox (6203CM) (Ref. TASK 
R  27-50-00-400-003). 
R  (8) Put a CONTAINER 5 L(1 1/2 USGAL) in position below the Power Control 
R  Unit (PCU) (1).

 

R **ON A/C ALL

 4. Procedure
_________ (Ref. Fig. 401/TASK 27-54-51-991-001, 402/TASK 27-54-51-991-002) Subtask 27-54-51-020-050
 A. Removal of the Power Control Unit 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.
 (1)
 Disconnect the right torque shaft 6252CM (32) as follows:

 (a)
 Remove the nuts (11) and the bolts (12) which connect the torque shaft (32) to the input universal joint (35) of the PCU (1).

 (b)
 Disconnect the torque shaft (32) from the input universal joint (35).

 (c)
 Remove the input universal joint (35) from the PCU (1).

 

 (2)
 Disconnect the left torque shaft 6202CM (13) as follows:

 (a)
 Remove the nuts (11) and the bolts (12) which connect the torque shaft (13) to the input universal joint (10) of the PCU (1).

 (b)
 Disconnect the torque shaft (13) from the input universal joint (10).

 (c)
 Remove the input universal joint (10) from the PCU (1).

 

 (3)
 Prepare the PCU (1) for removal as follows:

 (a)
 Disconnect the hydraulic lines (52).

 (b)
 Disconnect the case drain lines (59) and (60).

 (c)
 Remove the tie wraps (46) and disconnect the seal drain lines (45).

 (d)
 Install the blanking caps or the blanking plugs on the open line

 (52)
 ends and on the PCU (1).

 

 

 Power Control Unit of the Flap System Figure 401/TASK 27-54-51-991-001
 1EFF : 1 1R 1CES  ALL  1 11 1 27-54-51 Page 407 May 01/04

 

 Power Control Unit of the Flap System - Electrical and Hydraulic Connections Figure 402/TASK 27-54-51-991-002
 1EFF : ALL 1 27-54-51Page 408 1 1 May 01/04R 1 1 1CES 1

 (e)
 Disconnect the electrical connectors 27CV-A, 27CV-B, 23CV-A, 24CV-A, 3CN-B and 3CN-A.

 (f)
 Put blanking caps on the disconnected electrical connectors.

 (g)
 Disconnect the electrical leads from the clamps which connect them to the PCU (1).

 (h)
 Remove the cotter pin (8), the nut (9) and the washer (7) from the bolt (5) which connects the PCU (1) to the attachment rod assembly (3).

 (i)
 Remove the cotter pin (8), the nut (9) and the washer (7) from the bolt (5) which connects the PCU (1) to the adjustable rod assembly (4).

 (j)
 Cut, remove and discard the lockwire from the nut (17).

 (k)
 Remove the nut (17), the washer (18) and the bolt (31).

 (l)
 Remove the nut (19) and the washer (20) from the attachment bolt (30).

 (m)
 Remove the screw (42), the washer (41) and the bonding jumper (40).

 (4) Remove the PCU (1) as follows: NOTE : The PCU weighs approximately 20 kg (44.0924 lb).
____
 (a)
 Hold the PCU (1) so that it can not fall.

 (b)
 Remove the bolts (5) and the bushes (6) from the attachment rod assembly and from the adjustable rod assembly.

 (c)
 Remove the attachment bolt (30).

 (d)
 Remove the PCU (1).

 1EFF : ALL 1 27-54-51Page 409 1 1 May 01/04R 1 1 1CES 1

 TASK 27-54-51-400-001
 Installation of the Power Control Unit 6201CM of the Flap System
 WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

 WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
 CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
　
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