TASK 32-51-00-835-150
5. Rigging Check of the NWS System (Fig. 501, 502)_______________________________
A. General
(1)
The nose wheel steering system is correctly rigged if the conditions that follow occur:
(a)
You can use the Captain's tiller handle to operate the nose wheel steering through the full travel of 65 |1 degrees left and right. It is necessary to have the hydraulic power on.
(b)
The nose wheels go to a position that is less than |1-1/2 degrees from the center when you release the tiller handle from the full left and right steering travel. The shock strut must be fully serviced and the hydraulic power must be on.
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B.
C.
D.
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MAINTENANCE MANUAL
(c) All the rig pins can be installed easily with the nose wheels less than |1/2 degree from the center (hydraulic power off).
NOTE: The rig pins have a free fit if you can install or
____ remove them with two fingers. Some resistance is permitted in rig pin NS6 only.
(d)
The NWS cables for the nose wheel steering system have the correct tension (do the check with the hydraulic power off).
(2)
There must be no more than a 5°F difference between the inner and the outer temperatures of the airplane. The temperatures must be stable for one hour or more before you do the rigging check and also during the rigging.
Equipment
(1)
Rig Pins from Set B20003-XX (AMM 20-10-24/201):
(a)
NS1 - P/N B20003-20
(b)
NS2 - P/N B20003-24
(c)
NS3 - P/N B20003-5
(2)
Cable Tensiometer, 0 to 200 pound range for 3/32 inch diameter cable - Commercially Available
(3)
Line to hold the NLG Top Torsion Link (Rope or
Cord)Consumable Materials
(1)
C00308 Compound, Corrosion Preventive -MIL-C-11796
(2)
D00015 Grease, Corrosion Preventive - BMS 3-24References
(1)
AMM 06-41-00/201, Fuselage Access Doors and Panels
(2)
AMM 07-11-02/201, Jacking Airplane Nose
(3)
AMM 20-10-24/201, Rig Pins
(4)
AMM 24-22-00/201, Electrical Power - Control
(5)
AMM 27-21-00/501, Rudder Control System
(6)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(7)
AMM 32-00-15/201, Landing Gear Door Locks
(8)
AMM 32-00-20/201, Landing Gear Downlocks
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MAINTENANCE MANUAL
E. Access
(1)
Location Zones
115 NLG Wheel Well (Left)
116 NLG Wheel Well (Right)
119 Main Equipment Center (Left)
120 Main Equipment Center (Right)
211 Control Cabin (Left)
212 Control Cabin (Right)
711 Nose Landing Gear (NLG)
F.
Prepare to do the Rigging Check
S 495-161
(1) Make sure the downlocks are installed for the nose and main landing gear (AMM 32-00-20/201)
S 865-160
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 nose landing gear and install the door lock (AMM 32-00-15/201).
S 865-159
WARNING: MAKE SURE YOU REMOVE THE HYDRAULIC PRESSURE TO THE SYSTEM FOR
_______ THE NOSE WHEEL STEERING BEFORE YOU DO THE CHECK. IF YOU DO NOT REMOVE THE HYDRAULIC PRESSURE, THE NOSE WHEELS CAN TURN WHEN YOU MOVE THE TILLER. THE MOVEMENT OF THE NOSE WHEEL CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Remove the pressure from the left hydraulic system
(AMM 29-11-00/201).
G.
Do the Rigging Check
S 985-156
(1) Make sure the conditions of the rigging check that follow are satisfactory. If they are not, do the Rigging of the NWS
__________________ System.
______
S 585-157
(2) Look at the indicator (58) on the steering collar (Detail E, Fig. 502) to make sure the nose wheels are less than 1/2 degree from the center.
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