Branson F42h - Operating Principle Of Brake

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CHAPTER 4 TRANSMISSION 3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
3.2.2 OPERATING PRINCIPLE OF BRAKE
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F42W426A
 (1)Brakelever
 (2)Camplate
 (3)Finalpinion
 (4)Boss
 (5)Disc
 (6)Pressureplate
 (7)Steelball
 (8)Brakeinsidearm
Whenthebrakelever(1)ispulledbytransferredpower,thebrakeinsidearm(8)xedbythespline
d
bossis
rotatedaswell.Also,astheprotrudedpartsonthebrakeinsidearmarettothegroovesofthecamplates
(LH/RH)(2),thecamplatesarerotatedaswell.
Ontheotherside,thenalpinion(3)isxedtothedifferentialsidegearwithsplines,rotatingtogether,andits
othersideisconnectedtotheboss(4)withsplines.Thisbossisxedto2discs(5)withsplinesasoneunit.
Also,thepressureplates(6)areinstalledinbetweenthefrictiondiscsandthesepressureplatesarexedto
therearaxlehousing.
Therefore,when the brakepedal is depressed,the brakeleveris movedtorotatethecamplate.Then,the
steel ball (7)installed inthe grooveon the slant of thecam plate pushes the cam plate inward, producing
drivingforce.Thisdrivingforcecompressesthefrictiondiscsandplates.Asthepressureplatesarexedby
therearaxlehousing,theystoprotating.
Asaresult,thenalpinionxedtothebossstopsrotatingaswell,leadingtostopofthevehicle.