(j)
Remove the bolt that holds the adjustable pushrods for the mechanism that operates the forward door to the bellcrank.
(k)
Do the steps (3)(c) through (3)(j) with the other door for the nose landing gear disconnected.
(l)
Connect the two adjustable pushrods to the bellcrank.
(m)
Install the bolt into the bellcrank and tighten.
S 822-042
(4)
Do the steps that follow to adjust the locked sensors for the nose landing gear (Fig. 203):
(a)
Make sure the clearance between the sensor and the target is
0.04 - 0.05 inch. If the clearance is in the tolerance do the test of the sensors. If the clearance is not in the tolerance, do the steps that follow to adjust the clearance.
(b)
Loosen the lock nut (7) on the sensor (9) until the nut is almost removed from the sensor.
(c)
Remove the nut (6) that holds the sensor target (10).
(d)
Add or remove spacer washers (12) to the stud of the target to decrease or increase the clearance between the target and the sensor.
NOTE: Use shims with layers (11) if you cannot do the
____ adjustment with the spacer washers alone. Remove 0.003 inch layers from the shims to get the clearance.
(e)
Install the target (10) into the forward lock link (5).
(f)
Install the nut (6) and tighten.
(g)
Tighten the nut on the sensor.
(h)
Make sure the clearance between the sensor and the target stayed correct.
(i)
Install lockwire on the nut (8) when you complete the adjustment.
TASK 32-61-03-742-043
5. Test of the Proximity Sensors for the Nose Landing Gear_______________________________________________________
A. General
(1)
Do the test of the proximity sensors with the airplane on the ground and not on jacks. On the Proximity Switch Electronics Unit (PSEU), you can do a target position test. This test will make sure the relation between the sensor and its target is correct.
B.
References
(1)
AMM 06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
(2)
AMM 24-22-00/201, Electrical Power - Control
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(3)
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System
(4)
AMM 32-00-15/201, Landing Gear Door Locks
(5)
AMM 32-00-20/201, Landing Gear Downlocks
C.
Prepare for the Test
S 492-044
(1) Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 492-045
WARNING:_______OBEY THE INSTALLATION PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(2) Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).
NOTE: The doors for the nose and the main landing gear open at
____ the same time when you use the ground release.
S 862-046
(3)
Make sure the pressure is removed from the left hydraulic system (AMM 29-11-00/201).
S 862-047
(4)
Make sure the control lever for the landing gear is in the DN position.
S 862-048
(5)
Make sure these circuit breakers on the overhead panel P11 are closed:
(a)
11C19, LANDING GEAR POS SYS 2 ALTN
(b)
11C30, LANDING GEAR POS SYS 1
(c)
11R36, PROX SW TEST
(d)
11S23, POS SYS 2
S 862-049
(6)
Supply electrical power (AMM 24-22-00/201).
D.
Do the Test of the Proximity Sensors
S 012-050
(1) Open the access door 119BL for the main equipment center
(AMM 06-41-00/201) and find the PSEU on the E3-4 shelf.
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MAIN EQUIPMENT CENTER ACCESS DOOR 119BL (REF) SWITCH ELEX UNIT
119BL (REF) (PSEU) (E3-4)
MAIN EQUIPMENT CENTER
PSEU BITE Target Test
Figure 204
