-
the contact face of the Power Control Unit (PCU).

 (4)
 Prepare a small quantity of a mixture of 58 % SPECIAL MATERIALS (Material No. 05-002) and 42 % SPECIAL MATERIALS (Material No. 05-054).

 (5)
 Apply a quantity of the prepared mixture to:

 -
the contact face of the hydraulic motor,

 -
the contact faces of the POB,

 -
the contact face of the PCU.

 (6)
 Apply LUBRICANTS (Material No. 06-001) to the splined surfaces.

 Subtask 27-54-54-420-051
 B. Installation of the Hydraulic Motor
 WARNING : USE SOLVENTS/CLEANING AGENTS, SEALANTS AND OTHER SPECIAL
_______ MATERIALS ONLY WITH A GOOD SUPPLY OF AIR. OBEY THE MANUFACTURERS INSTRUCTIONS. PUT ON PROTECTIVE CLOTHING. DO NOT GET THEM IN YOUR MOUTH. DO NOT SMOKE. DO NOT BREATHE THE GAS. THESE MATERIALS ARE POISONOUS, FLAMMABLE AND SKIN IRRITANT. GET MEDICAL HELP IF YOUR SKIN OR EYES BECOME IRRITATED.
 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.
 CAUTION : YOU MUST INSTALL HYDRAULIC TUBES WITH HYDRAULIC FLUID AS
_______
 LUBRICANT.

 NOTE : The installation procedure for the hydraulic motor which is
____
 attached to the valve block 23CV is given. The installation
 procedure for the hydraulic motor which is attached to the valve R block 24CV is almost the same. The differences in the procedures R are given in the steps that follow.
 (1)
 Install the back-up rings (12), back-up rings (15) and the O-rings (13), O-rings (20) on the transfer tubes (14).

 (3)
 Pressurize the Green and the Yellow hydraulic systems (Ref. TASK 29-

10-00-863-001) (Ref. TASK 29-10-00-863-002).

 (4)
 Remove the LOCKING TOOL - FLAP/SLAT CONTROL LEVER (Ref. TASK 27-00-00-080-002) from the slat/flap control lever.

 (5)
 Remove the warning notice(s).

 (6)
 Make sure that the work area is clean and clear of tool(s) and other items.

R  (2) Install the O-ring (4) on the POB (41).
 (3) Install the new back-up rings (31), back-up rings (34) and the new O-rings (32), O-rings (35) on the transfer tube (33).
 (4) Put the transfer tubes (14),(33) in their related holes in the valve block assembly (23).
R  (5) Safety the transfer tubes (14),(33) with the new locking rings (21) and the new locking ring (30). 
R R R R  (6) This procedure gives the installation procedure of the hydraulic motor (7) at the same time with the POB (41) and the valve block assembly (23). If it is necessary to install only the hydraulic motor (7), refer to (Ref. TASK 27-54-54-400-002). 
R  (7) Install the hydraulic motor (7) with the POB (41) on the valve block assembly (23). 
R R  (8) Apply the SPECIAL MATERIALS (Material No. 05-002) to the threads of the bolts (6). 
R  (9) Carefully install the hydraulic motor (7) on the transfer tubes (14). 
R  (10) Carefully install the POB (41) on the transfer tube (33). 
R  (11) Attach the hydraulic motor (7) to the POB (41) with the washers (5) and the bolts (6). 
R  (12) TORQUE the bolts (6) to between 0.87 and 0.96 m.daN (76.99 and 84.95 lbf.in). 
R  (13) Install the hydraulic motor (7) and the POB (41) and the valve block assembly (23). 
R R  (a) Apply the SPECIAL MATERIALS (Material No. 05-002) to the threads of the studs (42) and to the threads of the bolts (3).
R  (b) Install the hydraulic motor (7), the POB (41) and the valve block assembly (23) at the same time to the differential gearbox (40).
R R  (c) Attach the POB (41) and the valve block assembly (23) to the differential gearbox (40) with: - the washers (2) - the bolts (3) - the washers (25).
 (d) TORQUE the bolts (3) and the nuts (24) to between 1.40 and 1.54 m.daN (10.32 and 11.35 lbf.ft).

R R R  (14) Do a bonding test between the main bonding point of the power control unit and the: - POB flange - hydraulic motor flange - valve block assembly flange. The resistance must not be more than 20 milliohms. 
R  (15) Connect the hydraulic lines.
 (a) Remove the blanking caps from the line ends (8),(10),(11).
 (b) Remove the blanking plugs from the ports of the PCU (1).
 (c) Make sure that the hydraulic line end-fittings are serviceable. 
R R  (d) Apply the HYDRAULIC FLUIDS (Material No. 02-003) to the threads of the line end-fittings.
 (e) Connect the case drain line (8) to the hydraulic motor (7).
　
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