Part of the Kubota Repair Manuals.
This Kubota workshop manual covers the M5640SU and M5640DT-SU utility tractors, both built around the V2403-M-TE3 diesel engine. Across 358 pages it walks servicing personnel through the mechanism, adjustment, and full repair of every major system on these machines.
Sections run from engine teardown and clutch service to the transmission, rear and front axle, brakes, steering, hydraulics, and the complete electrical system with wiring diagrams. Each area carries troubleshooting charts, servicing specifications, and tightening torques, so you can diagnose a fault and rebuild to factory figures.
Whether you are chasing a no-start, fixing sluggish hydraulics, or setting valve clearance, this PDF gives you the same information Kubota supplies its dealer technicians. It is a repair-level document, not a basic operator guide, aimed at owners and independent mechanics doing their own work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| I Information | 3-14 | |
| G General | 15-83 | Tractor Identification, General Precautions, Handling Precautions for Electrical Parts and Wiring, Lubricants, Fuel and Coolant, Tightening Torques, Check and Maintenance |
| Engine | 84-149 | EGR (Exhaust Gas Recirculation) System, EGR Valve, EGR Cooler, Engine Body, Lubricating System, Cooling System, Fuel System, Turbocharger |
| Clutch | 150-176 | Travelling Clutch, PTO Clutch, Clutch Pedal, Clutch Disc, Diaphragm Spring, Pressure Plate, PTO Clutch Valve, PTO Clutch Pack |
| Transmission | 177-213 | 4WD Model, 2WD Model, Traveling System, PTO System, Shift Linkage Mechanism, Four Wheel Drive Section |
| Rear Axle | 214-225 | Planetary Gear, Rear Axle Nut, Rear Axle Cover |
| Brakes | 226-236 | Brake Shaft, Brake Plate, Brake Disc, Cam Plate, Brake Cam, Brake Cam Lever, Brake Pedal, Brake Pedal Shaft |
| Front Axle | 237-264 | Front Wheel, Differential Case, Pinion Shaft, Spiral Bevel Pinion Shaft, Bevel Gear, Front Axle Cover, Front Gear Case |
| Steering | 265-284 | Steering Mechanism, Steering Controller, Power Steering Hydraulic Pump, Steering Cylinder (4WD Model), Steering Cylinder (2WD Model) |
| Hydraulic System | 285-308 | Hydraulic Circuit, Hydraulic Pump, Relief and Safety Valve, Position Control Linkage, Hydraulic Cylinder, Position Control |
| Electrical System | 309-358 | Wiring Diagram, Starting System, Charging System, Lighting System, Meter Panel, Opc (Operator Presence Control) |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| M5640SU, M5640DT-SU (4WD model) | ||
| Front wheel mounting nut (4WD) | 168 to 196 N·m (17.1 to 20.0 kgf·m, 124 to 145 lbf·ft) | p. 36 |
| M5640SU, M5640DT-SU (2WD model) | ||
| Front axle mounting bolt (2WD) | 124 to 147 N·m (12.6 to 15.0 kgf·m, 91.5 to 108.9 lbf·ft) | p. 75 |
| All Models | ||
| Cylinder head screws | 93.2 to 98.0 N·m (9.5 to 10.0 kgf·m, 68.8 to 72.3 lbf·ft) | p. 98 |
| M10 (7T) general use screws, bolts and nuts | 48 to 55 N·m (4.9 to 5.7 kgf·m, 36 to 41 lbf·ft) | p. 28 |
| Fuel filter replacement interval | every 400 Hr | p. 30 |
| Engine oil filter replacement interval | every 400 Hr | p. 30 |
| Engine oil filter tightening | Tighten the filter quickly until it contacts the mounting surface. Tighten filter by hand an additional 1/2 turn only. | p. 33 |
| Hydraulic oil filter replacement interval | every 300 Hr | p. 30 |
| Hydraulic oil filter tightening | Tighten filter by hand an additional 1/2 turn only. | p. 34 |
| Air cleaner primary element cleaning interval | every 100 Hr | p. 30 |
| Air cleaner primary element replacement interval | every 1 year | p. 30 |
| Radiator cap pressure fall time | More than 10 seconds for pressure fall from 88 to 59 kPa (from 0.9 to 0.6 kgf/cm², from 13 to 9 psi) | p. 102 |
