Branson F36r - Page 185

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42hW-201601
CHAPTER 4 TRANSMISSION
4
3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
HST MODEL
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Thetorquedeliveredtotherangeshiftdriveshaft(1)turnstherangeshiftdrivegearshaft(4)throughthe26T
gear(2)and29Tgear(3).The29Tgearisrotatedcontinuously.Also,the20Tgear(8)and52Tgear(6)are
rotatedaswellastheyareengagedwiththe34Tgearand18Tgearoftherangeshiftdrivegearshaftand
36Tgear(5).
Ontheotherhand,therangeshiftdriveshaftandcountershaft(9)idlefromeachotherduetotheirinternal
needlebearings.Therefore,the20Tgear(8)and52Tgear(6)arerotated,sliding.
Whentherangeshiftdriven2ndgear(7)ispushedtotherightmostpositionforlowspeed(L)shiftoperation,
the spline inthe 52Tgear isengaged with the spline on therange shift driven2nd gear. Then, thetorque
reducedbyengagementofthe52Tgearand18Tgearoftherangeshiftdrivegearshaftisdeliveredtothe
countershaftthroughtherangeshiftdriven2ndgearwhichisxedtothecountershaftwithsplines.
For mid speed (M) shift operation, the torque is transferred to the countershaft after it is reduced by
engagementofthe34Tgearoftherangeshiftdrivegearshaftwiththe36Trangeshiftdriven2ndgear(7).
Whentherangeshiftdriven2ndgear(7)ismovedtotheleftmostpositionforhighspeed(H)shiftoperation,
itisengagedwiththe20Tgear(8).Then,thetorqueatthespeciedspeedratiowithengagementofthe20T
gear(8)withthe36Tgear(5)oftherangeshiftdrivegearshaftisdeliveredtothenalcountershaftthrough
therangeshiftdriven2ndgear.