Automobiles Truck Clutch

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Presentation Description

Automobiles Truck clutch Don Bosco Auto

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Presentation Transcript

Slide 1: 

Automobiles Topic My first Presentation Don Bosco Auto satish.namo@yahoo.com

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CLUTCH

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MODULE : TRUCK CLUTCH

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Learning outcome This Module Provides you with the skills To repair Truck clutch. To test and identify faults in the Truck clutch.

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Outcome On Completion of this module you should be able to: Identify clutch assemblies and explain single plate dry clutch operation. Identify faults in clutch. Remove , replace and repair clutch.

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CLUTCH LOCATION, FUNCTION AND TYPES

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Location Located between the Engine and Gear Box. ENGINE FRONT WHEEL CLUTCH TRANSMISSION UNIVEASAL JOINT GEAR REAR WHEEL

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Why is CLUTCH Required? IC engines develop low torque at starting speed and as the speed increases, develop enough torque to pick up the load.

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E.g. if the power from a running engine is transmitted to the drive wheels when the truck is at stand still The truck will jump out if the power is too large. The engine will stop or stall if the power is too small.

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To connect and disconnect the Power from Engine to Gearbox. FUNCTION

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Truck Clutches use SINGLE PLATE DRY CLUTCH which is Finger Type Types of clutch

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CLUTCH CONSTRUCTION AND WORKING

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MAIN PARTS of CLUTCH Assembly Driving members Consist of flywheel, Pressure plate, Pressure Pressure Springs Pressure plate Driven by Clutch cover Flywheel Release lever Release Levers Single plate dry clutch

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Driven members Consist of Clutch plate which slides on the splines of clutch shaft Clutch Plate Splines of clutch shaft Single plate dry clutch

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Operating members Consist of foot pedal, linkage, release bearing, release levers and pressure springs Pressure Springs Release Bearing Linkage Release Levers Foot Pedal Single plate dry clutch

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Cushion Springs - Are mounted on the clutch hub, these are wavy springs. This provision is made to ensure engaging of clutch without any sound or jerk. Cushion Spring Construction of clutch plate

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Facing - Clutch facings made of fiber asbestos are riveted on both side of the cushion spring for correct operation and functioning of the modern clutch assembly. Facing Construction of clutch plate

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Torsion Springs - To absorb vibrations when the clutch is engaged or disengaged Hub flange - To accommodate torsion spring Splined Hub - Can slide on primary shaft splines Torsion springs Hub flange Hub Construction of clutch plate

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CLUTCH OPERATING MECHANISM

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Clutch release lever should have adequate clearance in clutch housing for actuation. It should not slip at high torque It should be able to damp torsional vibrations of crank shaft Clutch Actuation System Requirements

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MECHANICAL TYPE Clutch Operation CLUTCH COVER E-RING CLUTCH RELEASE LEVER CLUTCH PEDAL CLUTCH RELEASE CAGLE RELEASE FORK

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Clutch Operation HYDRAULIC TYPE

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Adjustment should be perform when a pedal play is not correct Or when the clutch does not engage or disengage properly. Often pedal play can be increased or decreased by turning Treaded fastener located either under the dash at the clutch pedal or where the linkage attaches to the clutch fork Clutch pedal free play Adjustment

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Retracting spring Equalizer shaft Pedal-to-equalizer rod Release lever Pedal Over-center spring Retainer Link Bracket and bumper Release rod Clutch pedal free play adjustment

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Don Bosco Auto