DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.
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Transcript of DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.
![Page 1: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/1.jpg)
DIT160
Front Axles
![Page 2: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/2.jpg)
Elizabethtown Technical College
Front Axles
Instructor: Doug Poteet
DIT160
![Page 3: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/3.jpg)
PARTS OF A MANUAL STEERING SYSTEM
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![Page 5: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/5.jpg)
AXLE FUNCTION The main function of the front-axle
assembly is to support some of the vehicles weight and to serve as the foundation for the steering components.
![Page 6: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/6.jpg)
CONVENTION CAB TYPE The front axle is designed to carry
about 25% of the gross vehicle weight.
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CAB OVER The front axle is designed to carry
up to 35% of the total vehicle weight.
![Page 8: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/8.jpg)
SET BACK For heavy hauling or construction
work, the conventional cab design with a set-back front axle is preferred.
The set-back axle allows greater weight transfer to the front axle, a tighter vehicle turning circle, and a softer ride.
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![Page 10: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/10.jpg)
TYPES OF STEER AXLES STANDARD I-BEAM ALUMINUM BEAM TUBULAR CENTER-POINT
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Q1-4 Name four different designs of
axles
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Q5-7 Name 3 different axle manufatures
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Q8-10 Name 3 different ways the axle ID
could be displayed on a axle
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![Page 15: DIT160 Front Axles. Elizabethtown Technical College Front Axles Instructor: Doug Poteet DIT160.](https://reader036.fdocuments.us/reader036/viewer/2022062519/5697bfa51a28abf838c97eed/html5/thumbnails/15.jpg)
STEERING KNUCKLE
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COMPONENTS OF A STEERING AXLE
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TAPERED KING PIN STRAIGHT KING PIN
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INSPECTING VERTICAL PLAY
.001-.025 new
.001-.065 inservice
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INSPECTING UPPER BUSHING FREE PLAY
Typically 0.010-.015 max
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MEASURING LOWER BUSHING FREE PLAY
Typically 0.010-.015 max
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TORQUE DEFLECTION
Typically 0.010-.015 max
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INSPECT BEARINGS
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INSPECT RACES
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R & R SHIMS
NOTE:
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TIE-ROD REMOVAL
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PICKLE FORK
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DRAW KEYS
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KNUCKLE PIN REMOVAL
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SEAL LIP MUST FACE THE AXLE
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DRIVING BUSHINGS
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HAND START BUSHING
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BUSHING AND SEAL INSTALLATION
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PRE-ASSEMBLY LUBE
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THRUST BEARING POSTION
THRUST BEARING
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VERTICAL PLAY
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USE JACK TO SIMULATE LOAD
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RTV
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KING PIN DRAW KEY ALIGNMENT
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DIT160
STEERING