TASK 32-51-02-404-014
 3.  Install Torque Limiter/Drum Assembly (Fig. 401)____________________________________
 A. References
 (1)
AMM 32-51-00/501, Nose Wheel Steering System Adjustment/Test

 B.
Equipment

 (1)  
Rig Pins from Set B20003-XX (AMM 20-10-24/201):

 (a)  
NS1 - P/N B20003-20

 (b)  
AIRPLANES WITH DUAL NWS TILLER;
 NS1A - P/N B20003-20

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757 MAINTENANCE MANUAL
 (c)  
NS2 - P/N B20003-24

 (d)  
NS3 - P/N B20003-5

 (e)  
NS5 - P/N B20003-5

 (2)  
Cable Tensiometer - 0 to 200 pound range for
 3/32 inch diameter cable (commercially
 available).

 (3)  
Towing Lever Lockpin - A09003-1

 C.
Consumable Material

 (1)  
D00015 Grease, Corrosion Preventive - BMS 3-24

 D.
Access

 (1)  
Location Zones 211 Control Cabin (Left Side) 117 Area Outboard and Above the NLG Wheel Well (Left Side)

 E.
Procedure

 S 494-081
 (1)  
AIRPLANES WITH SINGLE NWS TILLER;
 Make sure the rig pins NS2, NS3 and NS5 are installed
 (AMM 32-51-00/501).

 S 494-082

 (2)  
AIRPLANES WITH DUAL NWS TILLER;
 Make sure the rig pins NS1a, NS2, NS3 and NS5 are installed
 (AMM 32-51-00/501).

 S 494-017

 (3)  
Install the rig pin NS1 in the torque limiter/drum assembly you will install.

 (4)
Butter lubricate the splines of lower coupling of the torque shaft.

 S 424-019

 (5)  
Move the assembly up into its position to engage the coupling splines.

 S 644-018
 

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MAINTENANCE MANUAL

 (6)  S 424-020Align the assembly with the four holes in the adjacent structure (Detail A).
 (7)  S 824-021Make sure that the splines on the shaft show in not less than half of the inspection hole. This will make sure that the coupling is engaged sufficiently.
 (8)  S 424-022Hold the assembly in its position with the four bolts.
 (9)  S 434-083AIRPLANES WITH SINGLE NWS TILLER; Attach the ends of cables NWSA and NWSB on the drum and install new cotter pins to hold them (View A).
 S 434-084

 (10)
 AIRPLANES WITH DUAL NWS TILLER; Attach the ends of cables NWSA, NWSB, NWSBA and NWSBB on the quadrant drum and install new cotter pins to hold them (View A).

 S 434-085

 (11)
 AIRPLANES WITH SINGLE NWS TILLER; Tighten the cables NWSA and NWSB (AMM 32-51-00/501, Table I). Use the turnbuckles and the cable tensioner on the interconnect mechanism quadrant to do the procedure.

 S 434-086

 (12)
 AIRPLANES WITH DUAL NWS TILLER; Tighten the cables NWSA, NWSB, NWSBA and NWSBB (AMM 32-51-00/501, Table I). Use the turnbuckles and the cable tensioner on the interconnect mechanism quadrant to do the procedure.

 S 094-027

 (13)
 Make sure that you can install all the rig pins easily, and remove them if the fit is satisfactory.

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 S 834-028
 (14)
 If you cannot install the rig pins easily, adjust the nose wheel steering system (AMM 32-51-00/501).

 S 434-029

 (15)
 Install the turnbuckle locking clip(s) on the interconnect mechanism quadrant.

 S 434-030

 (16)
 Install the lockwire on the cable tensioner on the interconnect mechanism quadrant.

 S 714-031

 (17)
 Do the test for tiller handle steering in the system test for nose wheel steering (AMM 32-51-00/501).

 S 414-032

 (18)
 Install the summing mechanism cover.

 S 094-033

 (19)
 With the steering collar accurately in the center, remove the towing lever lockpin.

 S 864-034

 (20)
 Make sure the towing lever moves to the NORMAL position.

 WARNING:_______ MAKE SURE THE STEERING COLLAR IS ACCURATELY IN THE CENTER
 BEFORE YOU REMOVE THE TOWING LEVER LOCKPIN.  THE UPPER TORSION
 LINK AND STEERING COLLAR WILL TURN QUICKLY TO THE CENTER WHEN
　
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