D.
Access
(1)
Location Zone
114 Nose Gear Wheel Well, RH
E.
Procedure
S 495-002
(1) Make sure you install the landing gear ground locks. (AMM 09-11-00/201).
S 495-003
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Do this task: "Installation of the Door Locks on the Nose Landing Gear" (AMM 32-00-30/201).
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SHUTOFF VALVE
AIR VALVE
SEE A PRESSURE SWITCH
SHOCK STRUT
SEE B
A1
SHUTOFF VALVE PRESSURE GAGE TUBE
PRESSURE SWITCH
SHOCK STRUT
SHOCK STRUT
PRESSURE
GAGE TUBE
PRESSURE GAGE
FWD A2
AIR VALVE
1
AIRPLANES WITHOUT SHOCK STRUT PRESSURE GAGE 2 AIRPLANES WITH SHOCK STRUT PRESSURE GAGE B 2
Nose Gear Pressure Switch Functional Test
Figure 501
M29001
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S 735-034
(3)
If you broke the seal on any part of the nose gear pressure system, then do this task: "Nose Gear Pressure Switch Pressure Proof Test" (AMM 27-48-03/501).
S 725-035
(4)
Test the pressure switch:
(a)
Close the nose gear pressure switch shutoff valve and put a DO NOT OPEN tag on it. 1) Install the rig pin, G12001-50, in the rig pin hole.
(b)
Remove the cap from the air valve.
(c)
Make sure that you close these circuit breakers on the P6 panel: 1) 6F20, PILOTS MISC IND 2 2) 6F26, F/O IND LTS
(d)
Make sure that you close these circuit breakers on the P7, Overhead Circuit Breaker Panel: 1) 7A01, MAWEA PWR A 2) 7B01, MAWEA PWR B 3) 7F08, UPR EICAS 4) 7F09, EIU L 5) 7F10, EIU C 6) 7F11, EFIS CONT L 7) 7F14, LWR EICAS 8) 7F15, EIU R 9) 7F16, EFIS CONT R
(e)
Make sure that you close this circuit breaker on the P41 panel:
1) 41L08, CMC L
(f)
Make sure that you close this circuit breaker on the P41 panel:
1) 41L39, CMC R
(g)
Make sure that you close this circuit breaker on the P18 panel:
1) 18D16, CMC SW
(h)
Set the EIU Select Switches on the Captain's and the First Officer's Source Select Switch Panel, P1-1 and P3-1, to the AUTO positions.
(i)
Set the L-IRS and the C-IRS Mode Select Switches on the MSU, P5, panel to ALIGN or NAV mode.
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(j)
Set the CAPT'S IRS select switch on the Captain's Source Select Switch Panel, P1-1, to the LEFT position.
(k)
Set the First Officer's IRS select switch on the First Officer's Source Select Switch Panel, P1-3, to the RIGHT position.
(l)
Set the Captain's ADC Source Select switch on the Captain's Source Select Switch Panel, P1-1, to the L position.
(m)
Set the First Officer's ADC Source Select switch on the First Officer's Source Select Switch Panel, P3-1, to the R position.
(n)
Adjust the pressure in the nose landing gear manifold assembly until it is between 800 psi (5520 kPa) and 900 psi (6200 kPa).
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