Branson F42r - Pto Shift

4
-
15
42hW-201601
CHAPTER 4 TRANSMISSION
4
3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
2.4 PTO SHIFT
)
5
3726+$)7
372
372
372
VKLIW
372
&/87&+
3$&.
7
7
7
7
7
7
10
8
9
3
1 2 6
11
12 5 4 7
F42W423A
Thisvehicle isequippedwithan independentPTOwhichreceivesenginepowercontinuously regardlessof
theengagementstatusofthemainclutchanditspoweriscontrolledbyitsseparatePTOclutch.Theengine
powertodrive the PTO is delivered through themain PTOshaft (inner)(1). This main PTOshaft (inner)is
xedtothePTOsleeve(3)oftheywheelwithsplines,passingthroughthemainshaft(outer)(2)whichisa
hollowshaft.Therefore,thisshaftisrotated,regardlessofthemainclutch,aslongastheengineruns,anditis
connectedtothePTOclutchandthejoint(4)inthemiddletodelivertherotatingforcetothePTOshiftsection
throughthePTOdrivegearshaft(7).
As the joint (11), which is xedtothe end of the main PTOshaft with splines, engages theclutch hub (12)
andtheclutchhubisconnectedtotheclutchdiscasoneunit,theyidletogetherinanormalcondition.When
oil is drawn to the PTO clutch for PTO operation, this oil pushes the internal piston so the pressure plate
iscompressed against theclutch disc, rotating the wholePTOclutchassembly. Then,thisrotating force is
transferredtothePTOclutchshaft(5)whichisconnectedtothePTOclutchassemblywithsplines.Therefore,
thePTOdriveshaft(7)isengagedwiththejoint,rotatingtogether.
WhenthePTOsleeve(8)ismovedtotheleftforthePTO1stgearshift,thespeedofthePTOisdetermined
bytheengagementratioofthe14gearand65gearandthePTOshaft(10)isrotatedatthisspeed.Whenitis
movedtotherightforthePTO2ndgearshift,thePTOspeedisdeterminedbytheengagementratioofthe18
gearand60gearandthisspeedistransmittedtothePTOshaftthroughthePTOhub(9).
PTO RPM
▶
PTO1stgear:engine2,600rpm
PTO2ndgear:engine2,600rpm
•
•
x
14
65
=
560rpm
x
18
60
=
780rpm
EnginespeedatPTO540rpm:2,507rpm
EnginespeedatPTO750rpm:2,500rpm
•
•
MEC. MODEL