Part of the Kubota Repair Manuals.
This is the official Kubota AC60 workshop manual, a 70-page PDF covering the AC60 diesel engine and its AC60-Q, AC60-G, AC60-D, and AC60-R variants. It moves from performance curves and dimensions into the engine's mechanism, then into full disassembly and servicing.
You get the construction and function of the engine body, lubricating, fuel, and electrical systems, followed by troubleshooting, servicing specifications, tightening torques, a maintenance check list, and step-by-step checking, adjusting, disassembling, and assembling procedures for the engine body.
Use it to set valve clearance, torque the cylinder head and injector nozzle correctly, service the air and fuel filters, and diagnose the hard starting, smoke, and low-power problems these small diesels develop with age. Factory values are given so you rebuild to spec instead of by feel.
What's Inside This Kubota AC60 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Mechanism | Feature, Engine Body, Lubricating System, Fuel System, Electrical System | |
| Disassembling and Servicing | General, Troubleshooting, Servicing Specifications, Tightening Torques, Maintenance Check List, Check and Maintenance, Special Tools | |
| Engine Body (Servicing) | Checking and Adjusting, Disassembling and Assembling, Servicing |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Valve Clearance (Cold) | 0.14 to 0.18 mm | p. 23 |
| Cylinder Head Screws Torque | 51.9 to 56.8 N-m | p. 28 |
| Cleaning Air Pressure | must not exceed 690 kPa | p. 31 |
| Element Replacement Interval | Once a year or after 6 cleanings | p. 29 |
| Filtration Particle Size | as small as 30 μm | p. 15 |
| Strainer Net Mesh | 50 meshes | p. 10 |
| Injection Pressure | 22.41 to 23.44 MPa | p. 4 |
| Nozzle Holder Mounting Nuts Torque | 24.5 to 29.4 N-m | p. 28 |
| Commutator O.D. (Allowable Limit) | 27.0 mm | p. 27 |
| Mica Undercut (Allowable Limit) | 0.2 mm | p. 27 |
| Displacement | 276 cm³ | p. 4 |
| Compression Ratio | 20.5:1 | p. 4 |
