Cub Cadet LTX Series Riding Tractor Service & Repair Manual

LTX Series Riding Tractors NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outdoor power equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals. These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperienced individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all instructions and use common sense when working on power equipment. This includes the contents of the product’s Oper- ators Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication, although care has been taken to make it as complete and accurate as possible at the time of publication. However, due to the variety of outdoor power equipment and continuing product changes that occur over time, updates will be made to these instructions from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a product. The company reserves the right to make changes at any time to this publication without prior notice and without incurring an obligation to make such changes to previously published versions. Instructions, photographs and illustrations used in this publication are for reference use only and may not depict actual model and component parts. © Copyright 2012 MTD Products Inc. All Rights Reserved

I Chapter 1: Introduction Professional Shop Manual intent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Fasteners. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Description of the 900 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Model and Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Chapter 2: Engine related parts Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Fuel tank removal/replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Fuel Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Evaporative (EVAP) emissions system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Roll over valve vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Chapter 3: Steering Steering alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Sector gear and steering pinion gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Steering shaft and hex bushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Pivot bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Chapter 6B: Electronic Power Steering Rubber Torsion Coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 EPS Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 EPS motor & gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Troubleshooting the EPS (without the 725-05419 EPS tester) . . . . . . . . . . 27 EPS removal/replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Chapter 4: Body panels What is covered by this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Hood components: Headlight removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Hood components: side vent removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Hood components: grill removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Hood components: pivot bracket removal . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Seat and Fenders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Dash Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Table of Contents

II Chapter 5: Hydro. Drive and brake system About this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Externally repairable drive system problems . . . . . . . . . . . . . . . . . . . . . . . . 56 Indications that a transaxle is not warrantable . . . . . . . . . . . . . . . . . . . . . . . 61 Brake adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Neutral control adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Linkage: pedal shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Pedal shaft assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Belt control; tensioner and idler pulleys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Drive belt replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Changing transaxle hydraulic fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Transaxle removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Chapter 6: CVT Drive and brake system About this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 About the variable speed drive system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 Externally repairable drive system problems: . . . . . . . . . . . . . . . . . . . . . . . . 94 Indications that a transaxle is not warrantable . . . . . . . . . . . . . . . . . . . . . . . 97 Brake adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Gear selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Tensioner pulley control rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Linkage: pedal shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Pedal shaft assembly removal: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Linkage: pedal tie strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Belt control: tension make-up pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Belt control: variable speed pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Belt control: tensioner pulleys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Drive belt replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Transaxle removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124 Transaxle repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Chapter 7: electrical system Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 RMC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Key switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 RMC Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 RMC module plug test (electric PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 RMC module plug test (manual PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Electric PTO switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 PTO relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 PTO switch (manual PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151 Brake switch (manual PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 Brake switch (electric PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Park brake switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 Reverse Safety Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Seat Safety Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Starter solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

III Start Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Run Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 Run Circuit / Reverse Caution mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Engine shutdown circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 Charging circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 PTO Circuit (electric PTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Reverse Mower Control (RMC) circuit operation . . . . . . . . . . . . . . . . . . . . 170 Electrical diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172 Electrical environment: AC Vs. DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Ohm’s Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Kirchhoff’s Current Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Kirchhoff’s Voltage Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 How the system is wired together . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Types of circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Parallel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Series/parallel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Shorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Opens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Increased resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 The Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Digital multimeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179 Wiring diagram or schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Fused jumper wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Test lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Self-powered continuity lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Ammeters and specialized charging system testers . . . . . . . . . . . . . . . . . 181 Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Charging the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 Checking battery condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183 Battery Testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 Adjustable load testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 Fixed load testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Conductance testers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Battery discharge test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Storage of batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186 Electrical Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187 Voltage Drop Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 Testing switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192 Diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193 Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

IV Chapter 8: Cutting Decks and lift shaft Cutting decks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201 Deck removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201 Cleaning the deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204 To clean the deck while it is removed: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204 Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Spindles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 PTO belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 Timing belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213 Leveling the deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Side to Side Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 Front To Rear Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216 Deck Wheel Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Deck lift shaft assembly bushings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Deck lift shaft assembly removal/replacement . . . . . . . . . . . . . . . . . . . . . . 218 Deck lift links and cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 Engine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 Chapter 9: Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 The spark plug(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Air filter and foam pre-cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 Oil change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Servicing the fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Clean the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 Lubricate the pedal shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228 Hydro-gear Appendix

Introduction 1 Professional Shop Manual intent This Manual is intended to provide service dealers with an introduction to the mechanical aspects of the LTX series of tractors. • Detailed service information about the engine will be provided by the engine manufacturer, in most cases. Disclaimer: The information contained in this manual is correct at the time of writing. Both the product and the information about the product are subject to change without notice. About the text format: NOTE: is used to point out information that is relevant to the procedure, but does not fit as a step in the procedure. • Bullet points: indicate sub-steps or points. Disclaimer: This manual is intended for use by trained, professional technicians. • Common sense in operation and safety is assumed. • In no event shall MTD or Cub Cadet be liable for poor text interpretation or poor execution of the procedures described in the text. • If the person using this manual is uncomfortable with any procedures they encounter, they should seek the help of a qualified technician or Cub Cadet Technical Support. Fasteners • Most of the fasteners used on these mowers are sized in fractional inches. The engine and transmissions are metric. For this reason, wrench sizes are frequently identified in the text, and measurements are given in U.S. and metric scales. • If a fastener has a locking feature that has worn, replace the fastener or apply a small amount of releas- able thread locking compound such as Loctite® 242 (blue). • Some fasteners like cotter pins are single-use items that are not to be reused. Other fasteners such as lock washers, retaining rings, and internal cotter pins (hairpin clips) may be reused if they do not show signs of wear or damage. This manual leaves that decision to the judgement of the technician. Caution is used to point out potential danger to the technician, operator, bystanders, or sur- rounding property. ! CAUTION Warning indicates a potentially hazardous situation that, if not avoided, could result in death of serious injury. ! WARNING ! DANGER Danger indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. This signal word is to be limited to the most extreme situations. CHAPTER 1: INTRODUCTION

LTX Tractors 2 • Be prepared in case of emergency: Keep a fire extinguisher nearby Keep a first aid kit nearby Keep emergency contact numbers handy • Replace any missing or damaged safety labels on shop equipment. • Replace any missing or damaged safety labels on equipment being serviced. ! CAUTION • Grooming and attire: Do not wear loose fitting clothing that may become entangled in equipment. Long hair should be secured to prevent entanglement in equipment. Jewelry is best removed. • Protective gear: includes, but is not limited to Clear eye protection ................................ while working around any machinery Protective gloves ..................................... where necessary Armored footwear .................................... when working around any machinery Hearing protection ................................... in noisy environments Chemically resistant gloves ..................... when working with chemicals or solvents Respirator ................................................ when working with chemical or solvents Appropriate tinted eye protection............. when cutting or welding Flame resistant headgear, jacket, chaps . when cutting or welding ! WARNING ! CAUTION • Remember that some hazards have a cumulative effect. A single exposure may cause little or no harm, but continual or repeated exposure may cause very serious harm. • Clean spills and fix obviously dangerous conditions as soon as they are noticed. • Lift and support heavy objects safely and securely. • Be aware of your surroundings and potential hazards that are inherent to all power equipment. All the labels in the world cannot protect a technician from an instant of carelessness. • Exhaust fumes from running engines contain carbon monoxide (CO). Carbon monoxide is a colorless odorless gas that is fatal if inhaled in sufficient quantity. Only run engines in well ventilated areas. If running engines indoors, use an exhaust evacuation system with adequate make-up air ventilated into the shop. ! DANGER

Introduction 3 Assembly Torque specifications may be noted in the part of the text that covers assembly, they may also be summarized in tables along with special instructions regarding locking or lubrication. Whichever method is more appropriate will be used. In many cases, both will be used so that the manual is handy as a quick-reference guide as well as a step-by- step procedure guide that does not require the user to hunt for information. The level of assembly instructions provided will be determined by the complexity of disassembly/reassembly, and by the potential for unsafe conditions to arise from mistakes made in assembly. Some instructions may refer to other parts of the manual for subsidiary procedures. This avoids repeating the same procedure two or three times in the manual. Description of the 900 series The 900 series is a new tractor platform introduced in the 2009 season. This platform replaces the traditional 600 series tractor. See Figure 1.1. New for the 900 series is: • New stronger frame • New hood and grill designs • A new 42” timed deck • A new 2 blade 46” deck • Tighter turning radius Figure 1.1

LTX Tractors 4 Model and Serial Numbers The model and serial number tag can be found under the seat. See Figure 1.2. The serial number is located to the right of the model number as shown above. See Figure 1.2. The model number is 13AX90AR010 The break down of what the character mean is as follows: 1 .............................................................................................. Cuts grass ....3 .......................................................................................... Lawn tractor .......A....................................................................................... Sales level/type of create ...........X................................................................................... Engine code .............9. ................................................................................ Frame .................0 ............................................................................. Drive system ....................A .......................................................................... Hood style .........................R..................................................................... Deck (S = 42”, T = 46”, P=50”, R=42” timed deck) .............................056 ............................................................. Customer number The serial number is 1J078H30003. The serial number reads as follows: 1 .............................................................................................. Engineering level ..J............................................................................................. Month of production (J = October) .....07 ....................................................................................... Day of the month .........8 ..................................................................................... Last digit of the year ...........H................................................................................... Plant it was built in (Martin, TN) ..............3 ................................................................................ Assembly line number .................0003 ....................................................................... Build number of unit Figure 1.2 Model number Serial number

Cub Cadet LTX Series Riding Tractor Service & Repair Manual

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