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Teknik Kendaraan Ringan

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1 Teknik Kendaraan Ringan
CLUTCH SERVICE Teknik Kendaraan Ringan Semester 3 th Class XI Kompetensi Kejuruan SK-KD 7TH


3 Drive Train This mechanism consists of: Clutch (clutch) Transmission Propeller shaft Differential Axle & Drive shaft Mechanism changes energy generated by a machine called the "Power Train"

4 Clutch Terms: Can connected from engine to the transmission with smooth Can move the engine to power transmission without slip Can terminate the relationship with the quick and perfect Position: Between the engine and transmission Function: To connect and disconnect cycles engine to the transmission

5 Cluct systems are used to disengage the engine from road
When the clucth pedal is depressed, the clucth is disengaged from the engine When the clutch is engaged the engine, the engine power will transfer through the clucth to the road

6 SYSTEM COMPONENTS Flywheel: Transfer engine power the clucth
Input shaft: transfers power from clucth to the tranmission Clucth Disc : spilne to input sahft, transfer power from engine the input shaft Pressure plat assembly : Spring pressure tighttly holds the clucth to the flywheel

7 Release Bearing : Connected through linkage to the clucth pedal
Release Bearing : Connected through linkage to the clucth pedal. Provides a way for the pressure plate to release pressure on the clucth Clucth Fork : Slide the release bearing into and away from the pressure plat assembly Clucth Lingkage. Allows the driver to operate the clucth fork Clucth Housing : Encloses the clucth assembly

8 Clutches operation Pilot bushing or bearing in center
of flywheel or crankshaft, supports the end of input shaft (friction disk) splined to transmission Input shaft (throw-out bearing T/O bearing) allows to push on rotating clutch fingers Bolted to Crank Bolted to flywheel - Applies the spring force to clamp the friction disk to the flywheel (clutch fork) pushes T/O bearing to release rotating clutch

9 With you foot off of the pedal, the pressute plat hold the clucth against the flywheel, alloing power to travel through the clucth to the input shaft of the transmission

10 With the clucth disesaged, the pressure releases it’s clamp on the clucth disc, which interrupts the power flow from engine

11 Clutches Flywheel, Pressure plate, spring, end clucth cover are revolving. Clucth disc and clucth shaft are stopped to pressure plat Disengage Pressure plate engage- seizes clucth disc and entire unit revolves

12 Fly Wheels Mounted on the rear of crankshaft
Control speed fluctuations of the crankshaft Allows a method of starting the engine Friction surface for the clucth Cast iron or cold rolled steel

13 Transmission input shaft
Extends from the rear of engine crankshaft to the insade of the transmission case Splined area where the clucth hub rides Pilot area support front of input shaft in end of crankshaft Transmission front bearing supports the end of the input shaft Also called the clucth shaft


15 Clucth Disc Also called the friction disc
Located between the flywheel and pressure plat Transmits power from engine to the input shaft Made up of an outer disc assembly and central hub Contains many grooves cut across surface for heart dissipation, removal of dust and dirt, and to break and vacum

16 Construction of the Clutch
Splines to input shaft Of transmission Clutch Disk or Friction Disk

17 Outer disc assembly Thin steel sandwiched between friction material or friction facing Friction material is bonded or riveted Friction material is devaiced into segments for even distribution Spring steel between the facings help absorp the shock of engagement

18 Clucth Disc Facings Clucth Disc Facings
Like brake lining, asbeston was trasitionally used because of excellent coefficient of friction, heat dissipation. And low cost Fedeal low as banned the manufacture of asbeston containing clucth facings after Agustus of 1992 Asbeston is replaced with fiberglass and aramid nonmetallic compounds of metallic friction facings, using various mixtures of powdered iron copper, graphite, and ceramic

19 0,015 or less above rivets is considered worn out
When sectional lines come close to disappering is worn

20 Friction disks Often made of asbestos Must be put in only one way
Usually marked Clutch won’t release if wrong 12/2001

21 Friction disks Cushion springs Waved metal between clutch half's
Dampen clutch engagement

22 Friction disks Torsional springs Can be spring or rubber
Dampen power impulses from crankshaft 12/2001

23 Torsional Springs Has pins to limit amount of twist.
Springs try to keep it centered between pins. Springs sometimes get weak and start rattling or fall out

24 Disc clutch Function: Friction facing the field to play power forward from the engine to the transmission Cushion plate to soften when the clutch related Torsion damper for muted surprise when clutch related

25 Friction disks Torsional springs Can be spring or rubber
Dampen power impulses from crankshaft 12/2001

26 Hub flange Splined hub engage the splines on the transmission input shaft Made from cast iron Hub flange and outer disc are riveted together with”stop pins”

27 Types of Clutches (pressure plates)
Coil spring 9 spring 12 spring 3 fingers for T/O bearing to push on

28 Clutch cover tipe coil spring
Clutch cover type coil spring Advantages:    The emphasis on strong plate clutch Disadvantages:    Energy to pressure plate clutch weight    Construction complicated, so expensive price

29 Clutch cover type diagpragm
Diaphragm clutch cover model Advantages:    Light energy emphasis    Emphasis clutch plate more evenly    Pedal power is not reduced by the style centrifugal Disadvantages The emphasis of the plate clutch smaller

30 Mechanism of mechanical clutch
Freeplay is the distance between the pedal and diaprahgma cushion liberator Free play

31 Mechanism of hydraulic clutch
This type of movement on the clutch pedal to be changed by pressure hydraulic master cylinder which is then forwarded to the release fork through the release cylinder

32 Master Cylinder Function: To generate pressure hydrolic


34 Clutch Release Cylinder
Function: To forward the power of the master cylinder push release fork

35 Some are adjustable for free-play and some not

36 Automatic clutch (torque converter)
Note: Only used on vehicles equipped with automatic transmission

37 end

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