-
the mating face of the Pressure-Off Brake (POB),
-
the mating face of the Power Control Unit (PCU).
(2)
Prepare a small quantity of a mixture of 58 % SPECIAL MATERIALS (Material No. 05-002) and 42 % SPECIAL MATERIALS (Material No. 05-054).
(3)
Apply a quantity of the mixture prepared to:
-
the mating face of the POB,
-
the mating face of the PCU.
(4)
Apply LUBRICANTS (Material No. 06-001) to the splined surfaces.
Subtask 27-54-53-420-050
B. Installation of the Valve Block
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.
(1)
Install the new back-up rings (12), back-up rings (15) and the new O-rings (13), O-rings (20) on the transfer tubes (14).
(2)
Install the O-ring (4) to 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).
(5)
Safety the transfer tubes (14),(33) with the new locking rings (21) and the new locking ring (30).
NOTE : Install the valve block assembly (23) together with the POB
____ (41) and the hydraulic motor (7) to the differential gear box (40).
(6) Install the POB (41) with the hydraulic motor (7) on the valve block assembly (23):
(a) Apply SPECIAL MATERIALS (Material No. 05-002) to the threads of the bolts (6).
1EFF : ALL 1 27-54-53Page 412 1 1 May 01/04R 1 1 1CES 1
(b)
Carefully install the hydraulic motor (7) on the transfer tubes
(14)
of the valve block assembly (23).
(c)
Carefully install the POB (41) on the transfer tube (33).
(d)
Attach the POB (41) to the hydraulic motor (7) with the washers
(5)
and the bolts (6).
(e)
TORQUE the bolts (6) to between 0.87 and 0.96 m.daN (76.99 and
84.95 lbf.in).
(7)
Install the POB (41), the hydraulic motor (7) and the valve block assembly (23):
(a)
Apply SPECIAL MATERIALS (Material No. 05-002) to the threads of the studs (42) and to the threads of the bolts (3).
(b)
Install the POB (41), the hydraulic motor (7) and the valve block assembly (23) together to the differential gearbox (40).
(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).
(8)
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.
(9)
Connect the hydraulic lines:
(a)
Remove the blanking caps from the line ends (8),(10),(11).
(b)
Make sure that the hydraulic line end-fittings are serviceable.
(c)
Apply HYDRAULIC FLUIDS (Material No. 02-003) to the threads of the line end-fittings.
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