TO THE READER This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism, service and maintenance of 07-E3B series. It is divided into three parts, “General”, “Mechanism” and “Servicing”. General Information on the engine identification, the general precautions, maintenance check list, check and maintenance and special tools are described. Mechanism Information on the construction and function are included. This part should be understood before proceeding with troubleshooting, disassembling and servicing. Refer to Diesel Engine Mechanism Workshop Manual (Code No. 9Y021-01876) for the one which has not been described to this workshop manual. Servicing Information on the troubleshooting, servicing specification lists, tightening torque, checking and adjusting, disassembling and assembling, and servicing which cover procedures, precautions, factory specifications and allowable limits.
1 SERIE 07-E3B, WSM SAFETY INSTRUCTIONS BEFORE SERVICING AND REPAIRING • Read all instructions and safety instructions in this manual and on your engine safety decals. • Clean the work area and engine. • Park the machine on a firm and level ground. • Allow the engine to cool before proceeding. • Stop the engine, and remove the key. • Disconnect the battery negative cable. • Hang a “DO NOT OPERATE” tag in operator station. SAFETY FIRST This symbol, the industry’s “Safety Alert Symbol”, is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to repair or use this unit. DANGER : Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING : Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION : Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. IMPORTANT : Indicates that equipment or property damage could result if instructions are not followed. NOTE : Gives helpful information. KiSC issued 09, 2008 A
2 SERIE 07-E3B, WSM SAFETY INSTRUCTIONS SAFETY STARTING • Do not start the engine by shorting across starter terminals or bypassing the safety start switch. • Unauthorized modifications to the engine may impair the function and / or safety and affect engine life. SAFETY WORKING • Do not work on the machine while under the influence of alcohol, medication, or other substances or while fatigued. • Wear close fitting clothing and safety equipment appropriate to the job. • Use tools appropriate to the work. Makeshift tools, parts, and procedures are not recommended. • When servicing is performed together by two or more persons, take care to perform all work safely. • Do not touch the rotating or hot parts while the engine is running. • Never remove the radiator cap while the engine is running, or immediately after stopping. Otherwise, hot water will spout out from radiator. Only remove radiator cap when cool enough to touch with bare hands. Slowly loosen the cap to first stop to relieve pressure before removing completely. • Escaping fluid (fuel or hydraulic oil) under pressure can penetrate the skin causing serious injury. Relieve pressure before disconnecting hydraulic or fuel lines. Tighten all connections before applying pressure. • Wear a suitable hearing protective device such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises. • Do not open high-pressure fuel system. High-pressure fluid remaining in fuel lines can cause serious injury. Do not disconnect or attempt to repair fuel lines, sensors, or any other components between the high-pressure fuel pump and injectors on engines with high pressure common rail fuel system. • High voltage exceeding 100 V is generated in the ECU, and is applied to the injector. Pay sufficient caution to electric shock when performing work activities. KiSC issued 09, 2008 A
3 SERIE 07-E3B, WSM SAFETY INSTRUCTIONS AVOID FIRES • Fuel is extremely flammable and explosive under certain conditions. Do not smoke or allow flames or sparks in your working area. • To avoid sparks from an accidental short circuit, always disconnect the battery negative cable first and connect it last. • Battery gas can explode. Keep sparks and open flame away from the top of battery, especially when charging the battery. • Make sure that no fuel has been spilled on the engine. VENTILATE WORK AREA • If the engine must be running to do some work, make sure the area is well ventilated. Never run the engine in a closed area. The exhaust gas contains poisonous carbon monoxide. PREVENT ACID BURNS • Sulfuric acid in battery electrolyte is poisonous. It is strong enough to burn skin, clothing and cause blindness if splashed into eyes. Keep electrolyte away from eyes, hands and clothing. If you spill electrolyte on yourself, flush with water, and get medical attention immediately. DISPOSE OF FLUIDS PROPERLY • Do not pour fluids into the ground, down a drain, or into a stream, pond, or lake. Observe relevant environmental protection regulations when disposing of oil, fuel, coolant, electrolyte and other harmful waste. KiSC issued 09, 2008 A
4 SERIE 07-E3B, WSM SAFETY INSTRUCTIONS PREPARE FOR EMERGENCIES • Keep a first aid kit and fire extinguisher handy at all times. • Keep emergency numbers for doctors, ambulance service, hospital and fire department near your telephone. KiSC issued 09, 2008 A
5 SERIE 07-E3B, WSM SPECIFICATIONS SPECIFICATIONS * The specification described above is of the standard engine of each model. * Conversion Formula : HP = 0.746 kW, PS = 0.7355 kW W1028103 Model V2607-DI-T-E3B V3007-DI-T-E3B V3307-DI-T-E3B Number of Cylinder 4 Type Vertical, water-cooled, 4-cycle DI diesel engine Bore × Stroke 87.0 × 110 mm (3.43 × 4.33 in.) 94.0 × 110 mm (3.70 × 4.33 in.) 94.0 × 120 mm (3.70 × 4.72 in.) Total Displacement 2615 cm 3 (159.6 cu.in.) 3053 cm 3 (186.3 cu.in.) 3331 cm 3 (203.3 cu.in.) ISO Net Continuous 41.3 kW / 2700 min -1 (rpm) (55.4 HP / 2700 min -1 (rpm)) 39.8 kW / 2600 min -1 (rpm) (53.4 HP / 2600 min -1 (rpm)) 45.6 kW / 2600 min -1 (rpm) (61.2 HP / 2600 min -1 (rpm)) ISO / SAE Net Intermittent 47.5 kW / 2700 min -1 (rpm) (63.7 HP / 2700 min -1 (rpm)) 46.9 kW / 2600 min -1 (rpm) (62.9 HP / 2600 min -1 (rpm)) 53.7 kW / 2600 min -1 (rpm) (72.0 HP / 2600 min -1 (rpm)) SAE Gross Intermittent 49.2 kW / 2700 min -1 (rpm) (66.0 HP / 2700 min -1 (rpm)) 48.5 kW / 2600 min -1 (rpm) (65.0 HP / 2600 min -1 (rpm)) 55.4 kW / 2600 min -1 (rpm) (74.3 HP / 2600 min -1 (rpm)) Maximum Bare Speed 2920 min -1 (rpm) 2820 min -1 (rpm) Minimum Bare Idling Speed 825 to 875 min -1 (rpm) 775 to 825 min -1 (rpm) Combustion Chamber Reentrant Type, Center Direct Injection Type (E-CDIS) Fuel Injection Pump Bosch PFR4KZ Type Mini Pump Governor All speed mechanical governor Direction of Rotation Counter-clockwise (Viewed from flywheel side) Injection Nozzle Bosch P Type Injection Timing 0.0044 rad (0.25 °) after T.D.C. 0.010 rad (0.60 °) after T.D.C. 0.023 rad (1.3 °) after T.D.C. Firing Order 1-3-4-2 Injection Pressure 1st stage 18.63 MPa (190.0 kgf/cm 2 , 2702 psi), 2nd stage 21.57 MPa (220.0 kgf/cm 2 , 3129 psi), 1st stage 18.63 MPa (190.0 kgf/cm 2 , 2702 psi), 2nd stage 22.56 MPa (230.0 kgf/cm 2 , 3271 psi), Compression Ratio 19.0 20.0 Lubricating System Forced lubrication by trochoid pump Oil Pressure Indicating Electrical Type Switch Lubricating Filter Full Flow Paper Filter (Cartridge Type) Cooling System Pressurized radiator, forced circulation with water pump Starting System Electric Starting with Starter Starting Motor 12 V, 2.5 kW 12 V, 3.0 kW Starting Support Device By Glow Plug in Combustion Chamber EGR External EGR (EGR Cooler + Mechanical water-cooled EGR Valve + Reed Valve) Battery 12 V, 92 AH equivalent 12 V, 120 AH equivalent Charging Alternator 12 V, 540 W Fuel Recommended fuels vary depending on the contents of the emission control regulations, the ambient temperature, and the fuel specifications. Therefore, please refer to the detailed description on page G-6. Lubricating Oil Class CF lubricating oil as per API classification is recommended. For details on recommended lubricating oils, see page G-6 and page G-9. Lubricating Oil Capacity 10.2 L (2.69 U.S.gals) 11.2 L (2.96 U.S.gals) Weight (Dry) 235 kg (518 lbs) 263 kg (580 lbs) 275 kg (606 lbs) KiSC issued 09, 2008 A
This Kubota diesel engine service and repair manual is the factory-issued reference for maintaining the 07-E3B series engines, specifically the V2607-DI-T-E3B, V3007-DI-T-E3B, and V3307-DI-T-E3B. These are 4-cylinder, direct injection diesel engines used across a range of industrial, construction, and agricultural equipment. This manual provides detailed procedures, inspection criteria, and technical data for anyone responsible for the upkeep or overhaul of these engines.
Whether you're tackling scheduled oil changes, adjusting valve clearances, troubleshooting injection timing, or performing a full disassembly, this manual offers step-by-step guidance backed by Kubota's factory standards. It’s an essential resource for workshops, fleet maintenance teams, and engine rebuilders who demand accuracy and long-term reliability.
Contents Overview:
General Information – Engine identification, serial number structure, emission compliance notes, maintenance intervals, and safety protocols.
Engine Mechanism – In-depth diagrams and explanations of each system’s construction and operating principles.
Specifications – Torque values, tolerances, injection pressures, timing marks, and standard service limits.
Maintenance & Inspection Procedures – Scheduled checks from daily up to 3000-hour intervals, including coolant flushes, fuel system inspections, air/fuel/oil filter replacements, and turbocharger condition checks.
Troubleshooting – Diagnostic techniques for starting issues, fuel delivery problems, overheating, loss of power, and more.
Servicing Instructions – Disassembly/reassembly steps for major engine components including cylinder head, turbocharger, fuel pump, and cooling system.
Performance Curves – Charts illustrating horsepower, torque, and fuel consumption at various engine speeds.
Special Tools – List of recommended tools for professional servicing.
This manual is an indispensable tool for ensuring compliance with emissions regulations, maintaining peak engine performance, and extending service life. Designed for skilled technicians and advanced users, it includes everything needed to keep Kubota’s 07-E3B series engines operating within factory specs.
Printable: Yes Language: English Compatibility: Pretty much any electronic device, incl. PC & Mac computers, Android and Apple smartphones & tablet, etc. Requirements: Adobe Reader (free)