3. Job Set-up
__________
Subtask 32-43-16-941-053
A. Safety Precautions
(1)
Make sure that the safety barriers are in position.
(2)
Make sure that the ground safety locks are on the landing gear (Ref. TASK 32-00-00-481-001).
(3)
On the panel 400VU:
-
make sure that the landing-gear control-lever 6GA is in the DOWN position
-
make sure that the warning notice is in position to tell persons not to operate the landing gear.
(4)
Make sure that the warning notice is in position on the ground service connection to tell persons not to pressurize the Yellow hydraulic system.
Subtask 32-43-16-860-054
B. Aircraft Maintenance Configuration
(1)
Make sure that the access platform is in position below the applicable false spar at the alternate brake manifold.
(2)
Make sure that the Isolation Coupling of the PTU is disconnected (Ref. TASK 29-23-00-860-001).
(3)
Make sure that the hydraulic systems have been depressurized (Ref. TASK 29-00-00-864-001).
(4)
Make sure that the applicable hydraulic reservoir has been depressurized (Ref. TASK 29-14-00-614-001).
(5)
Make sure that the container is below the applicable alternate brake manifold.
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C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY 4GG M36 121VU HYDRAULIC/BRAKING AND STEERING/SYS2/CTL 3GG M35 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/CTL 1GG M34 121VU HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY 2GG M33 121VU HYDRAULIC/PARK BRK/CTL/STBY 71GG N37 121VU HYDRAULIC/PARK BRK/CTL/NORM 70GG N36 121VU HYDRAULIC/HYD POWER/Y 3803GX N30 123VU Y HYD/ELEC/PUMP 3802GX AB06 123VU Y HYD/ELEC/ELEC PUMP/NORM 3801GX AB03
4. Procedure
_________
Subtask 32-43-16-420-051
A. Preparation for Installation
**ON A/C 001-002, 051-052,
(Ref. Fig. 401/TASK 32-43-16-991-001)
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Post SB 32-1190 For A/C 001-002,051-052,
(Ref. Fig. 402/TASK 32-43-16-991-004)
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
(1)
Clean the component interface and/or the adjacent area with a MISCELLANEOUS (Material No. 19-003) made moist with CLEANING AGENTS (Material No. 11-026).
(2)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(3)
Do an inspection of the component interface and/or the adjacent area.
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(4)
Remove the covers from the alternate brake manifold, the bobbin (10) and the filter (7).
(5)
Use HYDRAULIC FLUIDS (Material No. 02-003) to lubricate:
-
the new packing (3)
-
the new packing (6)
-
the new packings (8)
-
the new back-up ring (4)
-
the new back-up rings (9)
-
the new retainer (5).
Subtask 32-43-16-420-050
B. Installation of the Alternate Brake Safety-Valve
**ON A/C 001-002, 051-052,
(Ref. Fig. 401/TASK 32-43-16-991-001)
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
Post SB 32-1190 For A/C 001-002,051-052,
(Ref. Fig. 402/TASK 32-43-16-991-004)
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
(1)
Install the packings (3) and (6), the back-up ring (4) and the retainer (5) on the filter (7).
(2)
Install the packings (8) and the back-up rings (9) on the bobbin (10).
(3)
Install the filter (7) and the bobbin (10) in the alternate brake manifold.
(4)
Carefully install the safety-valve (1) on the alternate brake manifold. Make sure that you do not cause damage to:
-
the packings (3), (6) and (8)
-
the back-up rings (4) and (9)
-
the retainer (5)
-
the filter (7)
-
the bobbin (10).
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