Jacobsen R-311T Technical/Repair Manual
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Jacobsen R-311T Technical/Repair Manual

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R-311T™
Rotary Mower
Technical/Repair Manual
69171

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Summary of Contents for Jacobsen R-311T

  • Page 1 R-311T™ Rotary Mower Technical/Repair Manual 69171...

  • Page 3: Rotary Mower

    ©2010 Jacobsen, A Textron Company. All rights reserved.
  • Page 5 Proposition 65 Warning This manual provides detailed information and procedures to safely repair and maintain the following: WARNING Jacobsen R-311T rotary mowers and associated accessory attachments Certain vehicle components contain or emit This manual is intended to introduce and guide the user...

  • Page 6: Safety

    Near the beginning of each chapter is a specifications listing. This listing contains any specifications contained within the chapter. Copyright 2010, Jacobsen, a Textron Company “All rights reserved, including the right to reproduce this material or portions thereof in any form.” 4234520 First Edition...
  • Page 7 Table of Contents Safety Specifications and General Information Engine Electrical Hydrostatic Power Train Hydraulics Steering Cutting Units Accessories and Miscellaneous Repair 4234520 First Edition...

  • Page 9: Table Of Contents

    Chapter 1 Safety Introduction ..............1-2 Prepare for the Job .

  • Page 10: Introduction

    SAFETY Introduction Safety Notices Safety is the most important element of any repair Throughout this manual, the following key safety words procedure. Knowledge of the procedure to be performed will be used to alert the reader of potential hazards. and safe work habits are essential to preventing death, Become familiar with these words and their meaning.
  • Page 11 SAFETY 418186 TN9965, TN9966 Figure 1-1 4234520 First Edition...
  • Page 12 SAFETY Refer to “Safety & Operation Manual” for decal descriptions. 4181865 4181863 NOTICE Do NOT fold this ROPS if a canopy is attached. Damage to the mower hood could result. 4234520 First Edition...
  • Page 13 SAFETY Refer to “Safety & Operation Manual” for decal descriptions 4181862 4181861 4199140 4221180 4181864 4221181 4234520 First Edition...

  • Page 14: Inspect Safety Labels

    SAFETY Inspect Safety Labels Park Mower Safely Safety decals are critical to the safe operation of the See Figures 1-2 and 1-3. mower. Inspect the mower for any damaged, missing, or WARNING unreadable decals. Replace decals as needed before placing the mower back in service. Before cleaning, adjusting, or repairing this equipment, disengage all drives, engage park Keep Work Area Clean...

  • Page 15: Use Lifting Equipment Safely

    SAFETY Use Lifting Equipment Safely Use Compressed Air and Air Tools Safely WARNING WARNING Always check the lifting capacity and condition of hoists, slings, cables, or chains before use. Always wear approved eye and ear protection Using underrated or worn lifting components can while using compressed air.

  • Page 16: Service Tires Safely

    SAFETY Service Tires Safely Handle Fuel Safely Handle fuel with care—it is highly flammable. WARNING WARNING An inflated tire contains explosive force. Use care when handling wheels and tires. • Never remove the fuel cap from the fuel tank, or add fuel, when the engine is running or while the engine is hot.

  • Page 17: Handle Chemical Products Safely

    SAFETY Handle Chemical Products Service Hydraulic System Safely Safely WARNING WARNING The hydraulic system is under pressure, and the oil may be hot! Exposure to chemical products could result in • Always allow the machine to cool completely serious injury. Handle chemical products with before performing service.

  • Page 18: Service Electrical Components Safely

    SAFETY Service Electrical Components Safely WARNING Always disconnect the negative terminal first and positive terminal last. Connect positive terminal first and negative terminal last. Use care when testing live circuits to prevent arcing. Arcing could result in death or serious injury. •...
  • Page 19 Chapter 2 Specifications and General Information Mower Identification ............2-2 Serial Number .

  • Page 20: Mower Identification

    The addition of accessories can affect certain troubleshooting, adjustment, and repair WIDE AREA ROTARY MOWERS 69171 procedures. 1651 R-311T TN9950 Figure 2-2 Serial Number An identification plate (1) listing the product number (2) and serial number (3) is attached to the frame of the mower and is located just ahead of the rear axle on the right side.

  • Page 21: Component Location

    SPECIFICATIONS AND GENERAL INFORMATION Component Location See Figures 2-4 and 2-5. CAUTION Become familiar with operator controls, machine components, and correct operating procedures before beginning repair procedures. TN9962 Seat Left Cutting Unit Instrument Panel Right Cutting Unit Steering Wheel Fuel Tank Traction Pedal Battery Center Cutting Unit...

  • Page 22: Specifications And General Information

    SPECIFICATIONS AND GENERAL INFORMATION TN9963 ROPS Control Valve Hydraulic Oil Tank Hood Rear Wheel Motor (2) Front Differential 4WD Valve Figure 2-5: Component Location—Right Side 4234520 First Edition...

  • Page 23: Hydrostatic Power Train

    SPECIFICATIONS AND GENERAL INFORMATION Specifications Quick Reference Specifications Electrical Test and Adjustment Specifications Resistance Across Solenoid Coil—Front Mow 7.1 ± 10% ohms Solenoid Coil at 68° F Resistance Across Solenoid Coil—Right Mow 7.1 ± 10% ohms Solenoid Coil at 68° F Resistance Across Solenoid Coil—...

  • Page 24: Hydraulics

    SPECIFICATIONS AND GENERAL INFORMATION Repair Specifications Front Axle Motor—Backplate Assembly Screw Torque 15–18 (20–24) lb-ft (N·m) Front (Drive) Axle Assembly—U-Bolt Nut Torque 50 (67.8) lb-ft (N·m) Front Axle—Ring Gear Screw Torque 45–60 (61–81) lb-ft (N·m) Front Axle—Pinion Nut Torque 200–220 (271–298) lb-ft (N·m) Front Axle—Pinion Rotation Torque 20–40 (2.3–4.5)

  • Page 25: Steering

    SPECIFICATIONS AND GENERAL INFORMATION Steering Test and Adjustment Specifications Steering System Leakage Test—Cylinder Leakage Zero–Nominal Amount pt (L) Rear Axle Alignment Toe-In Measurement 0.0625 (1.6) in. (mm) Rear Axle Spindle Arm-to-Axle Stop Measurement 0.030–0.060 (0.76–1.5) in. (mm) Repair Specifications Steering Wheel Nut 25–30 (34–41) lb-ft (N·m) Steering Column-to-Steering Unit Screw Torque...
  • Page 26 SPECIFICATIONS AND GENERAL INFORMATION Mower Speed Transport—2WD 0–14.9 (0–24) mph (km/h) Transport—4WD 0–7.8 (0–12.5) mph (km/h) Mowing 0–7.7 (0–12.4) mph (km/h) Reverse 0–6 (0–9.6) mph (km/h) Brakes Brake Pedal Adjusting Nut Torque 20 (27) lb-ft (N·m) Rotor Screw Torque 50 (5.65) lb-in.
  • Page 27 SPECIFICATIONS AND GENERAL INFORMATION Weights and Dimensions Overall Weight 4151 (1883) lb (kg) Width of Cut 134 (3404) in. (mm) Overall Width 139 (3531) in. (mm) Overall Height with ROPS 84 (2134) in. (mm) Overall Height with ROPS & Canopy 92 (2337) in.

  • Page 28: Standard Torque Values

    SPECIFICATIONS AND GENERAL INFORMATION Standard Torque Values NOTE NOTICE Jacobsen uses Grade 5 plated bolts as standard, unless All torque values included in these charts are otherwise noted. When tightening plated bolts, use the approximate and are for reference only. Use of value given for lubricated.
  • Page 29 Chapter 3 Engine Specifications ..............3-2 General Engine Specifications .

  • Page 30: Specifications

    ENGINE Specifications General Engine Specifications Engine ® Manufacturer/Model Kubota Tier 4i/V2403-M-T-E3B Engine Type 4-stroke, diesel Fuel Requirement No. 2-D low or ultra low sulfur diesel fuel (Cetane Rating-45) Number of Cylinders/Configuration 4, in-line Displacement 148.5 (2434) cu in. (cc) Bore x Stroke 3.43 x 4.03 (87 x 102.4) in.

  • Page 31: Component Location

    ENGINE Component Location Kubota V2403-M-E3B See Figures 3-1 and 3-2. TN9971 Engine Oil Cooler Starter Motor Alternator Radiator/Hydraulic Oil Cooler Engine Temperature Sensor Fan Drive Belt Thermostat Engine Coolant Temp Switch Fuel Pump Oil Pressure Sending Unit Air Cleaner Switch Hydraulic Tank Figure 3-1: Component Location—Right Side 4234520 First Edition...
  • Page 32 ENGINE TN9972 Return Filter Engine Oil Fill Cap Oil Filter Fuel Solenoid Charge Filter Air Filter Throttle Cable Coolant Bottle Radiator Cap Fuel Filter Figure 3-2: Component Location—Left Side 4234520 First Edition...

  • Page 33: Checks And Adjustments

    ENGINE Checks and Adjustments 7. Loosen nuts (11) and position throttle cable (12) in clamp (10) so that there is approximately 0.040 in. (1 mm) of clearance between the top of the throttle Throttle Cable cable slot (8) and the throttle handle stud (9). 8.

  • Page 34: Purging The Fuel System

    ENGINE Purging the Fuel System 7. Turn the ignition switch to the ON position to allow the fuel pump to operate. Adjustment 8. Close the air vent plug when bubbles disappear from the fuel flow and turn the ignition switch to the off See Figure 3-7.

  • Page 35: Repair

    ENGINE Repair Fan Belt Removal and Installation See Figures 3-8 and 3-9. NOTE Inspect and adjust the new engine belt after the first 50 hours of operation. Check and adjust annually thereafter. 1. Park the mower safely. (See “Park Mower Safely” on page 1-6.) 2.

  • Page 36: Air Cleaner Assembly

    ENGINE Air Cleaner Assembly Removal and Installation See Figures 3-10 and 3-11. CAUTION • Do not open the air cleaner assembly for inspection or cleaning. Unnecessary removal of the filter increases the risk of injecting dust and other impurities into the engine. •...

  • Page 37: Muffler

    ENGINE Muffler Removal, Inspection, and Installation See Figure 3-12.. CAUTION Do not attempt to service the exhaust system when the engine is hot. Serious personal injury can occur. 1. Park the mower safely. (See “Park Mower Safely” on page 1-6.) 2.

  • Page 38: Radiator/Oil Coolers

    ENGINE Radiator/Oil Coolers Removal and Installation See Figures 3-13. 11 12 TN9953 Upper Radiator Hose Radiator Draincock Adapter Hose Clamp (4) Oil Cooler Mounting Tie (4) Screw (2) O-Ring Screw (2) Flat Washer (4) Air Cleaner Support Engine Oil Filter Adapter Screw(4) Oil Cooler Spacer (4) Engine Oil Filter Head...
  • Page 39 ENGINE 1. Park the mower safely. (See “Park Mower Safely” on Radiator Removal page 1-6.) See Figures 3-15 through 3-16. 2. Lower mowing decks to ground. 1. Remove the engine oil cooler. (See “Engine Oil 3. Allow the engine to cool completely. Cooler Removal”...

  • Page 40: Thermostat

    ENGINE 5. When the engine reaches normal operating temperature, check and fill the coolant reservoir to the hot full level. Thermostat Removal and Installation See Figure 3-17. 1. Park the mower safely. (See “Park Mower Safely” on page 1-6.) 2. Allow the engine to cool completely. 3.

  • Page 41: Throttle Cable And Control Lever

    ENGINE Throttle Cable and Control Lever Removal and Installation See Figures 3-18 through 3-21. 1. Park the mower safely. (See “Park Mower Safely” on page 1-6.) 2. Remove the instrument panel. (See “Instrument Panel” on page 4-103.) 1 2 3 TN2298 TN2298 Figure 3-20...

  • Page 42: Fuel Filter

    ENGINE Fuel Filter Removal and Installation See Figures 3-22 and 3-23. CAUTION Diesel fuel is highly flammable. Handle with care. Use an approved container with a spout that will fit inside the fuel filler neck. Avoid using unapproved containers to transport fuel. Keep all fuel containers clean and closed when not in use.

  • Page 43: Fuel Pump

    ENGINE Fuel Pump Engine Removal and Installation Removal and Installation See Figure 3-24. See Figures 3-25 through 3-29. 1. Park the mower safely. (See “Park Mower Safely” on CAUTION page 1-6.) 2. Allow the engine to cool completely before Diesel fuel is highly flammable. Handle with care. attempting to service the engine.
  • Page 44 ENGINE 10. Disconnect and remove fuel hose (2) from outlet of fuel filter and from injection pump. Clean up any spilled fuel. 11. Remove two nuts (7), two lock washers (6), four washers (5), and two screws (4) to remove fuel filter assembly.
  • Page 45 ENGINE TN9954 Figure 3-27 TN9955 14. Loosen clamps (17) and remove air intake hose (19) Figure 3-28 and turbo intake hose (18). Cover the turbo air intake 19. Remove six screws (28) and lock washers (29) to opening. disconnect the flywheel drive plate (30) from the 15.
  • Page 46 ENGINE WARNING Prevent personal injury. Use a properly rated lifting device. Always be sure the load is balanced before lifting. TN9956 Figure 3-29 20. Using an engine hoist, support the engine (33) and 21. Check for any connected wires and components and remove the four engine mounting bolts (31) flat carefully remove the engine from the machine.

  • Page 47: Engine Service

    ENGINE Engine Service 22. Place the engine on a suitable stand or workbench that will support the full weight in a safe manner while A separate engine manual, prepared by the engine preventing damage to the engine. manufacturer, is supplied with this machine. Refer to the engine manufacturer’s manual for all engine-related NOTE service.
  • Page 48 ENGINE Page Intentionally Blank 3-20 4234520 First Edition...

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