Sitework Systems TX420, TX425 Series Service Manual Form No.
ABOUT THIS MANUAL This service manual was written expressly for Toro service technicians. The Toro company has made every effort to make the information in this manual complete and correct. Basic shop safety knowledge and mechanical/electrical skills are assumed. The Table of Contents lists the systems and the related topics covered in this manual. For service information on drive systems, please refer to the Hydro-Gear BDP-10A/16A/21L Pump service manual (form no.
REVISIONS Revision 000 . . . . . . . . . . . . . Revision 001 . . . . . . . . . . . . . ii 8/01/08 1/01/09 Rev.
TABLE OF CONTENTS SAFETY INFORMATION General Information.......................................................................................................................1-1 Think Safety First..........................................................................................................................1-1 SPECIFICATIONS General Specifications..................................................................................................................2-1 Dimensions........................
TABLE OF CONTENTS ENGINE (A) TX420 & 425 250000399 & lower.............................................................................................. 4A-1 Engine Removal................................................................................................................... 4A-1 TX420 & 425 250000399 & lower............................................................................................ 4A-13 Engine Installation........................................................................
TABLE OF CONTENTS ELECTRICAL cont. Sensor, Hydraulic Temperature.....................................................................................................6-8 Purpose...................................................................................................................................6-8 Location..................................................................................................................................6-8 How It Works...............................................
TABLE OF CONTENTS ELECTRICAL cont. Diodes, Kohler Engine.................................................................................................................6-17 Purpose.................................................................................................................................6-17 Location................................................................................................................................6-17 How It Works............................................
TABLE OF CONTENTS HYDRAULICS (B) cont. TX420 & 425 240000299 & lower............................................................................................ 7B-67 2 Spool Loader Valve Removal.......................................................................................... 7B-67 2 Spool Loader Valve Installation....................................................................................... 7B-70 TX420 & 425 240000300 & lower................................................................
TABLE OF CONTENTS HYDRAULICS (C) cont. TX420 & 425 240000301 & up................................................................................................. 7C-80 Loader Valve Disassembly & Assembly............................................................................. 7C-80 Joystick Assembly Removal............................................................................................... 7C-81 Joystick Assembly Installation...................................................................
TABLE OF CONTENTS DRIVE SYSTEM cont. TX420 200000100 - 230000999..................................................................................................8-37 TX425 220000100 - 240000299..................................................................................................8-37 Wheel Motor Removal..........................................................................................................8-37 Wheel Motor Installation.............................................................
TABLE OF CONTENTS BRAKE ASSEMBLY cont. TX420 & 425 250000401 - 270000999.......................................................................................9-38 Brake Plate Removal............................................................................................................9-38 TX420 & 425 250000401 - 270000999.......................................................................................9-40 Brake Plate Installation...................................................................
TABLE OF CONTENTS HYDRAULIC TESTING cont. TX420 200000100 - 210000499................................................................................................12-14 Loader Circuit Pressure Test...............................................................................................12-14 Loader Circuit Pressure Test Procedures...........................................................................12-14 Hydrostatic Pump Flow Test..................................................................
TABLE OF CONTENTS MAIN FRAME TX420 & 425 250000401 & up....................................................................................................14-1 Main Frame Replacement...........................................................................................................14-1 Track Removal TX425..........................................................................................................14-1 Tensioner Arm Removal...................................................................
