Cub-cadet ZD Manuel d'utilisateur

EZT®Integrated Zero-Turn TransaxleService and Repair Manual(ZC & ZD Models)BLN-52622July 2010

EZT® 7Vehicle tires improperly inated Refer to vehicle manufacturer suggested pressureControl linkage bent or out of adjustment Repair or re

8 EZT®FLUIDSThe uids used in Hydro-Gear products have been carefully selected, and only equivalent, or better products should be s

EZT® 9FLUID CHANGE PROCEDUREThis transaxle is factory lled, sealed and does not require oil maintenance. However, in the event of oil

10 EZT®PURGING PROCEDURESDue to the effects air has on efciency in hy-drostatic drive applications, it is critical that it is purg

EZT® 11WARNINGPOTENTIAL FOR SERIOUS INJURY Inattention to proper safety, operation, or maintenance procedures could result in personal i

12 EZT®SECTION 5. REPAIRHOW TO USE THIS MANUALEach subassembly illustrated in this section is illustrated with an exploded view sho

EZT® 13Table 5. Required ToolsMiscellaneousEZT® Service & Repair ManualFlat Blade Screw Driver (2)Torque WrenchAir Impact WrenchRubber Mal

14 EZT®WHEEL HUB AND NUT (CODE - A, C, F, or H)EXAMPLE: Z HRefer to Figure 6.DisassemblyNOTE: This procedure is only necessar

EZT® 15WHEEL HUB AND NUT (CODE - P, R, T, or U) EXAMPLE: Z PRefer to Figure 7.Disassembly NOTE: The following procedure is used for te

16 EZT®Figure 8. Control Arm and Bypass ArmRefer to Figure 8.Disassembly1. Loosen and remove the lock nut (26) and at washer (24

EZT® 17Figure 9. Seal Kit ReplacementBefore disassembly, wipe the unit free of any debris to avoid contamination.Refer to Figure 9.Input Seal1

18 EZT®Refer to Figure 10.Disassembly1. Remove the control arm and bypass arm. See page 16.2. Remove the oil from the transaxle.

EZT® 19DISC BRAKE ASSEMBLY16015915874751571562X 155731541531512X 15010015310Figure 11. Disc Brake AssemblyRefer to Figure 11.Disassembly1. Re

20 EZT®12345678910111213141516Refer to gure 12.Disassembly1. Remove the control arm and bypass arm. See page 16. 2. Remove the o

EZT® 21Refer to Figure 13.Disassembly1. Remove the bypass arm and control arm. See page 16.2. Remove oil from the transaxle. See page 9.3.

22 EZT®Figure 14. Motor ShaftRefer to Figure 14.Disassembly1. Remove the control arm and bypass arm. See page 16.2. Drain the oil

EZT® 23Figure 15. Input Shaft and Bypass Rod AssemblyRefer to Figure 15.Disassembly1. Remove the control arm and bypass arm. See page 16.2.

24 EZT®Refer to Figures 16-25.Disassembly1. Remove the bypass arm and control arm. See page 16.2. Drain the oil from the transaxl

EZT® 25 19. Reassemble the pistons, springs and thrust washers into the cylinder block and set aside.20. Remove the thrust bearing

26 EZT®(Swashplate/Pump Block)11. (See Figure 19) Install the pump thrust bearing (35) in the trunnion machined swashpla

TABLE OF CONTENTSSection PageForeword ...

EZT® 27Figure 19.Figure 20.Figure 21.Figure 22.Figure 23.3561

28 EZT®Figure 24.Use the following procedure to complete the installation of the transaxle on the vehicle.1. Install and secure th

EZT® 29If the unit has been torn down completely, the following summary identies the assembly pro-cedures necessary to completely assemble th

30 EZT®NOTE: Prior to applying the new sealant, the old sealant must be removed from all sur-faces.A small consistent bead of the

EZT® 31NOTES

32 EZT®Figure 24. EZT®EZT® EXPLODED VIEWNOTES: 1. BRAKE AND CONTROL ARM CAN BE ON EITHER SIDE. 2. LH SIDE SHOWN. RH SIDE IS A MIR

EZT® 33EZT® ITEMS LISTNo. DESCRIPTION1 ASSEMBLY, MAIN HOUSINGBUSHING2 ASSEMBLY, SIDE COVERBUSHING3 PLATE, BYPASS4 ASSEMBLY, PUMP BLOCKBLOCK, C

34 EZT®Axial Piston: Type of design for hydraulic motors and pumps in which the pistons are arranged parallel with the spindle (inp

EZT® 35Hydrostatic Transmission: The combination of a hydraulic pump and motor in one housing to form a device for the control and transfer of

EZT® 1FOREWORDHeadquartered in Sullivan, Illinois, Hydro-Gear® is a world leader in the design, manufacture, and service of quality hydrostatic

36 EZT®©2010 Hydro-GearPrinted in U.S.A.Rev. P8

2 EZT®of the swashplate reverses the ow of oil from the pump and thus reverses the direction of the motor output rotation. The pum

EZT® 3HYDRAULIC SCHEMATICFigure 2 provides an illustration of the hydraulic oil circuit. The oil supply for the hydraulic sys-tem of the EZT® i

4 EZT®EXTERNAL FEATURES EZT®AXLE SHAFTBYPASS ARMMAIN HOUSINGFILL PORTINPUT SHAFTCONTROL ARMCOG BRAKE DISCBRAKE ARMSIDE COVERFANPUL

EZT® 5TECHNICAL SPECIFICATIONSTechnical specications for the EZT® are listed in Table 1.Table 1. Technical SpecicationsInput Speeds Weight

6 EZT® This symbol points out important safety instructions which, if not followed, could endan-ger the personal safety and/or