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29-10-00-863-001 Pressurize the Green Hydraulic System 29-10-00-864-001 Depressurize the Green Hydraulic System 32-00-00-481-001 Installation of the Safety Devices on the Landing
 Gears 32-12-00-010-001 Open the Main Gear Doors for Access 32-12-00-410-001 Close the Main Gear Doors after Access 32-31-73-991-021 Fig. 507 32-31-73-991-022 Fig. 508
 3. Job Set-up
__________
 Subtask 32-31-73-941-060
 A. Safety Precautions
 (1)
 Put the safety barriers in position.

 (2)
 Make sure that the ground safety locks are installed 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
 -put a warning notice in position to tell persons not to operate the landing gear and the MLG doors.
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 Subtask 32-31-73-010-058
 B. Get Access
 (1)
 Open the applicable MLG door (Ref. TASK 32-12-00-010-001).

 (2)
 Put the access platform in position at zone 734(744) for the applicable MLG door.

 (3)
 Put the GROUND LOCK SLEEVE (460005835) on the applicable MLG door actuator.

 Subtask 32-31-73-860-061
 C. Depressurize Hydraulic Systems
 (1) Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001). Subtask 32-31-73-865-073
 D. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
49VU L/G/LGCIU/SYS1/NORM 1GA C09 121VU HYDRAULIC/LGCIU/SYS2 2GA Q35 121VU HYDRAULIC/LGCIU/SYS1/GRND SPLY 52GA Q34
 4. Procedure
_________
 (Ref. Fig. 507/TASK 32-31-73-991-021, 508/TASK 32-31-73-991-022) Subtask 32-31-73-220-083
 A. Dimensional Check
 (1)
 Measure the dimension Z between each proximity sensor and its target. The correct dimension should be 2.0 mm (0.0787 in.) +/- 0.5 mm (0.0196 in.).

 (2)
 If the dimension Z is incorrect, do the adjustment procedure in Para 4.B.(1), steps (a) thru (n).

 (3)
 Measure the dimension X between the center line of each proximity sensor and its target. The correct dimension must be to a maximum of

 3.5 mm (0.1377 in.) each side of the center line.
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 MLG Door Open Proximity Sensors 32GA, 33GA, 34GA, 35GA - Adjustment Dimensions Figure 507/TASK 32-31-73-991-021
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 MLG Door Open Proximity Sensors 32GA, 33GA, 34GA, 35GA - Adjustment Figure 508/TASK 32-31-73-991-022
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 (4) If the dimension X is incorrect, do the adjustment procedure in Para 4.B.(2), steps (a) thru (i).
 Subtask 32-31-73-820-052
 B. Adjustment of the MLG Door Open Proximity Sensors 32GA, 33GA, 34GA, 35GA NOTE : It is permitted to install a sensor target without a spacer if the
____
 correct clearance can be set without the spacer.

 (1) If the dimension Z is incorrect, do the steps that follow:
 (a)
 Disconnect the electrical connector (3) from the applicable proximity sensor (4):

 -
for System 1, LH, disconnect FIN 33GA

 -
for System 1, RH, disconnect FIN 32GA

 -
for System 2, LH, disconnect FIN 35GA

 -
for System 2, RH, disconnect FIN 34GA.

 (b)
 Put a blanking cap on the disconnected electrical connector (3).

 (c)
 Remove the nuts (12), the washers (13) and the bolts (1).

 (d)
 Remove the proximity sensor (4) from the sensor mounting bracket

 (2) with the spacers (14) and/or (15) if installed.

 (e)
 Make sure that the sensor mounting bracket (2) is in the correct condition.

 (f)
 To decrease the dimension Z, add the 0.5 mm (0.0196 in.) spacer

 (14) and/or the 2.0 mm (0.0787 in.) spacer (15) as necessary.

 (g)
 To increase the dimension Z, remove the 0.5 mm (0.0196 in.) spacer (14) and/or the 2.0 mm (0.0787 in.) spacer (15) as required.

 (h)
 Put the proximity sensor (4) in position on the sensor mounting bracket (2) with the spacers (14) and/or (15) if necessary.

 (i)
 Install the bolts (1), the washers (13) and the nuts (12).
　
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