Toro 08743 - Servicing the Wheel Motors

ServicingtheWheelMotors
g350211
Figure56
(FrontWheelMotorShown)
1.Dirtandwaterseal
9.Capscrew(7each)17.Commutatorring
2.Housing10.Plug
18.Commutator
3.Back-upwasher
11.O-Ring19.Manifold
4.Back-upring
12.Spring20.Stator
5.Shaftseal
13.Ball21.Wearplate
6.Couplingshaft
14.Endcover22.Rotor
7.Thrustbearing
15.Bodyseal(5each)23.Vane(7each)
8.Drivelink
16.Commutatorseal
ThewheelmotorsusedontheSandPromachineshavethesamebasic
construction.Themotorsdohoweverhaveinternaldifferencesthatmakethem
uniquetotheirlocationonthemachine(front,leftrear,andrightrear).
Thefrontwheelmotorhasa280cc(17.1cuinch)perrevolutiondisplacement
androtatesintheclockwisedirectionforforwardoperation.Thefrontmotoris
alsoequippedwithacheckvalvethatallowsthemotortooverrunduringtight
turnsinforwardoperationandby-passesowinreverseoperation.
Therightandleftrearwheelmotorshavea141cc(8.6cuinch)perrevolution
displacementbuthavedifferentrotationforforwardoperation.Therightrear
motorhasaclockwisedrivedirectionforforwardoperationandtheleftrear
motorhasacounter-clockwisedirectionforforwardoperation.Additionally,the
leftrearmotorhasahotoilshuttlevalvetobleedoffasmallamountofhydraulic
uidforcoolingtheclosedlooptractioncircuit.
SandPro
®
3040and5040
Page5–81
HydraulicSystem:ServiceandRepairs
20251SLRevA