757
MAINTENANCE MANUAL

 (2)  
D50005 Grease, Wheel Bearing -Mobil Aviation Grease SHC 100 (Optional)

 (3)  
D00388 Grease, Wheel Bearing -MIL-G-3545 Aeroshell 5 (Optional)

 C.
Parts

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT |FIG | ITEM | ................................................................................ | 401 | 1 | Wheel and Tire | 32-45-01 | 01 | 23, 25 | | | 2 | Washer, Tang | 32-11-01 | 10 | 154 | | | 3 | Nut, Retention | | | 156 | | | 4 | Hubcap Assembly | 32-45-01 | 01 | 21 | | | 5 | Bolt | | | 5 | | | 6 | Nut | | | 15 | | | 7 | Washer | | | 20 | | | 8 | Lockbolt | | | 10 | | | 9 | Washer | | | 15 | | | 10 | Nut | | | 20 | | | 11 | Spacer | 32-11-01 | 10 | 158 | 2.......….......…...................................…...........…....….........1
 D. References
 (1)  
AMM 07-11-03/201, Jacking Airplane Axles

 (2)  
AMM 12-15-03/301, Landing Gear Tire

 (3)  
AMM 12-21-14/301, Main Gear and Actuating Mechanisms - Servicing

 (4)  
AMM 24-22-00/201, Electrical Power, Control

 (5)  
AMM 32-11-26/601, Main Gear Axle

 (6)  
AMM 32-45-03/601, Wheels

 (7)  
AMM 32-45-04/601, Tires

 E.
Access

 (1)  
Location Zones
 211 Control Cabin, Left
 212 Control Cabin, Right
 731 Landing Gear Left
 741 Landing Gear Right

 F.
Procedure

 S 214-021
 (1)  
Examine all the components that are part of the installation for unwanted material and clean them if it is necessary.

 S 214-022

 (2)  
Examine the wheel and tire before you install it on the airplane (AMM 32-45-03/601, AMM 32-45-04/601).

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 S 214-023
 (3)  Look at the part of the axle that you can see for signs of scoring,
 galling, or corrosion.
 NOTE:____ Wear limits for the main gear axles are given in
 AMM 32-11-26/601.
 S 644-055
 (4)  Lubricate the grease fitting on the brake rod (AMM 12-21-14/301).
 S 494-024
 (5)  Make sure the thread protector is installed on the axle.
 S 644-025
 (6)  Lubricate the wheel spacer (11) with grease.
 S 424-062

 CAUTION: IF THE WHEEL SPACER IS NOT INSTALLED ON THE AXLE, THE WHEEL AND
_______ BRAKE WILL BIND AND CAUSE DAMAGE.
 MAKE SURE THE SPACER IS CORRECTLY INSTALLED ON THE AXLE. THE SPACER MAY MOVE WHEN THE WHEEL AND TIRE ASSEMBLY IS REMOVED. IF IT IS NOT IN ITS CORRECT POSITION, THE WHEEL AND TIRE ASSEMBLY WILL NOT INSTALL CORRECTLY. THIS CAN CAUSE DAMAGE TO EQUIPMENT.
 (7)  
Install the spacer (11) on the axle (Detail A).

 S 644-027

 (8)  
Put a thin layer of grease on the axle in the area that touches the wheel bearings.

 NOTE: Do not put grease on the surface of the axle between the
____ wheel bearings.
 S 644-028
 (9)  
Lubricate the wheel bearings with grease.

 S 094-029

 (10)
 Remove the protective cover (if it is installed) from the inner surface of the wheel assembly.

 S 424-030

 (11)
 Put the wheel and tire on the dolly and put it into position on the axle.

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 S 824-031
 (12)
 Make sure that the brake rotors are aligned with the keys on the wheel (Detail B).

 S 094-032

 (13)
 Remove the thread protector from the axle.

 S 644-033

 (14)
 Lubricate the axle threads, washer (2), and retention nut (3) with grease.

 S 424-034

 (15)
 Put the washer (2) on the axle.

 S 424-035

 (16)
 Put the retention nut (3) on the axle and tighten it by hand.

 S 424-036

 (17)
 Use the procedure that follows to tighten the wheel (3) retention nut to the necessary torque:

 (a)  
While you turn the wheel, tighten the nut to 235-260
 pound-feet.

 (b)  
　
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