(1)  
Wheel Change Dolly - Commercially available

 C.
Consumable Materials

 (1)  
D50013 Grease - Aeroshell #22 (Preferred)

 (2)  
D00233 Grease - Mobil 28 (Optional)

 (3)  
D50005 Grease -Mobil Aviation Grease SHC 100 (Optional)

 D.
References

 (1)  
AMM 07-11-31/201, Jack Airplane Axles

 (2)  
AMM 12-15-51/301, Landing Gear Tire

 (3)  
AMM 32-21-71/601, Nose Gear Axle

 E.
Access

 (1)  
Location Zone
 204 Nose Landing Gear

 F.
Install the Nose Landing Gear Wheel (Fig. 401)

 S 214-016
 (1)  
Examine the axle.

 S 224-017

 (2)  
If the axle threads have nicks, burrs, or damaged threads, do a check on the axle and axle nut (AMM 32-21-71/601).

 NOTE: Make sure the correct part number wheel bearings are
____ installed or damage to the wheel and axle can occur.
 S 434-019
 (3)  
Put the spacer on the axle.

 (4)
Install the three cotter pins to hold the spacer on the axle.

 S 434-021

 (5)  
Install the grease seal, retaining ring, and inner bearing on the inboard side of the wheel.

 S 434-020
 NOTE: Make sure the inner bearing is installed on the side of the
____ wheel that is opposite the inflation valve.
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A
737-300/400/500MAINTENANCE MANUAL
 S 644-045
 CAUTION:_______ DO NOT APPLY GREASE TO THE AREA BETWEEN THE AXLE BEARING.
 HIGH TEMPERATURES IN THIS AREA DURING A LANDING CAN CAUSE
 ALL GREASE IN THIS AREA TO BURN.  THIS CAN CAUSE DAMAGE TO
 WHEELS, TIRES, AND BRAKES.
 (6)  Lubricate the bearing seals with Aeroshell 22 grease.
 S 424-023
 (7)  Put the wheel and tire assembly on the wheel change dolly.
 S 424-040
 (8)  Put the wheel and tire assembly on the axle.
 S 094-024
 (9)  Remove the axle thread protection.
 S 434-025

 (10)
 Install the outer bearing, grease seal, and retaining ring on the outboard side of the wheel.

 S 434-026

 (11)
 Align the key of the washer with the keyway of the axle to install the washer.

 S 644-027

 (12)
 Lubricate the threads on the axle nut.

 S 434-028

 (13)
 Do the steps that follow to install the axle nut:

 (a)  
While you turn the wheel, tighten the axle nut to 80-100 pound-feet.

 (b)  
Stop the wheel.

 (c)  
Loosen the nut to zero torque.

 (d)  
While you turn the wheel again, do the steps that follow: 1) Tighten the axle nut to 30 pound-feet 2) Continue tightening axle nut until two lockbolt holes in

 the axle nut align with threaded holes in the washer for the outer bearing.
 S 434-029
 (14)
 Install the two lockbolts for the axle nut.

 S 434-030

 (15)
 Install a lockwire between the two lockbolt heads.

 (16)
 Fill the tire (AMM 12-15-51/301).

 S 614-038
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A
737-300/400/500MAINTENANCE MANUAL
 S 094-032
 (17)
 Lower the nose gear and remove the jack (AMM 07-11-31/201).

 S 224-039

 (18)
 Do a check on the tire for correct pressure (AMM 12-15-51/301).

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