S 216-018

 (5)  
Examine the brake keyway inserts for wear and signs that they have been hit repeatedly.

 S 216-019

 (6)  
Examine the tiebolt installations for:

 (a)  
Loose tiebolts and tiebolt nuts

 (b)  
Damaged tiebolts

 (c)  
Tiebolt locations that do not have tiebolts.

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757
MAINTENANCE MANUAL

 S 356-020
 (7)  If you found a loose or damaged tiebolt or a tiebolt location without a tiebolt, do the steps that follow:
 NOTE: Refer to the Component Maintenance Manual for the wheel for
____ the procedure to lubricate and install the tiebolts. The torque values for the tiebolt nuts are for a wheel with a tire that is deflated.
 WARNING:_______DEFLATE THE TIRE BEFORE YOU REMOVE ANY TIEBOLTS. IF PRESSURE IS NOT RELEASED FROM THE TIRES AND THE WHEEL HALVES COME APART, THEY CAN HIT YOU WITH FORCE AND CAUSE INJURY.
 (a)  
Deflate the tire.

 (b)  
Remove damaged or loose tiebolts.

 (c)  
Remove the tiebolts on the two sides of tiebolt locations that had damaged or loose tiebolts.

 (d)  
Remove the tiebolts on the two sides of tiebolt locations that did not have tiebolts.

 (e)  
Discard the tiebolts and tiebolt nuts that you removed.

 (f)  
Lubricate the new tiebolts and tiebolt nuts.

 S 216-021
 (8)  
Examine the wheels for melted thermal fuses and put tags on wheels that have melted thermal fuses to show that they require special attention.

 S 216-022

 (9)  
Examine a wheel that has overheated or has a melted thermal fuse that is still in the wheel for out-of-round condition as follows:

 (a)  
Measure the largest and smallest outer diameters on each wheel half (Detail A).

 (b)  
Make sure that the diameter difference does not exceed 0.020 inch.

 S 216-023
 (10)
 Examine the thermal fuse retainer to make sure that it is tightly attached, and tighten it if it is necessary.

 S 216-024

 (11)
 Examine the balance weights to make sure that they are tightly attached.

 S 216-025

 (12)
 Examine the axle sleeve and the inboard and outboard bearings for wear.

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757 MAINTENANCE MANUAL
TIE BOLTS (16 LOCATIONS)
BRAKE ALIGNMENT BRACKET
ROTOR DRIVE KEY (8 LOCATIONS)
A
KEYWAY INSERT (EXAMPLE)
HEAT SHIELD (EXAMPLE-ALL AROUND)
A
SEE A
INNER WHEEL HALF
A-A
1 MEASURE THE DIAMETER OF EACH WHEEL HALF AT THE OUTER EDGE OF THE WHEEL FLANGE
Main Gear Wheel Check Figure 601
INFLATION VALVE
BEARING (2 LOCATIONS)
OVER INFLATION VALVE (NOT SHOWN)
THERMAL PLUG (4 LOCATIONS)
A
TIRE
OUTER WHEEL
HALF

INFLATION VALVE
BEARINGS
SEALS
SEAL RETAINERS

HUBCAP

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 ú  Sep 28/01 

 
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757 MAINTENANCE MANUAL
TIE BOLTS SAFETY (18 LOCATIONS) PLUG
HEAT SHIELD (EXAMPLE)  INFLATION VALVE (NOT SHOWN) 
BEARING (2 LOCATIONS)  1 
A 
A  BRAKE ROTOR DRIVE KEY (9 LOCATIONS) THERMAL FUSE PLUG (3 LOCATIONS) DUNLOP WHEEL (FOR DUNLOP CARBON BRAKE) 

SEE A
A
INNER WHEEL HALF
DUNLOP
CARBON
BRAKE

A-A 1
MEASURE THE DIAMETER OF EACH WHEEL HALF AT THE OUTER EDGE OF THE WHEEL FLANGE Main Gear Wheel Check Figure 601A
TIRE
OUTER WHEEL
HALF

INFLATION VALVE
BEARINGS SEALS SEAL RETAINERS
HUBCAP
A09155
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. DUNLOP WHEELS ú

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757 MAINTENANCE MANUAL
 TIRES - INSPECTION/CHECK
________________________
 1.  General
_______
 A.  This section gives the procedures for an inspection of the landing gear tires when they are installed on the airplane. The data that follows is to be used to add life to the tires, and to decrease maintenance time.
　
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