Part of the Kubota Repair Manuals.
This Kubota workshop manual covers the LA1153AU and LA1353AU front loaders. Across 129 pages it provides the mechanism, servicing specifications, and repair procedures needed to service and rebuild these loaders.
The manual begins with loader specifications, safety, and terminology, then lays out the tightening torque tables for screws, stud bolts, plugs, and hydraulic fittings. A detailed mechanism section covers the hydraulic circuit, the self-leveling control valve assembly, the spill guard valve, and the optional third function and boom check valves.
The servicing section carries the troubleshooting charts, servicing specifications, tightening torques, and step by step guidance for dismounting the loader from the tractor, checking, and rebuilding the cylinders and valves. This is a repair-level PDF for owners and mechanics working on a Kubota LA1153AU or LA1353AU, not an operator's quick guide.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Information | 4-13 | Safety First, Safety Decal, Loader Terminology, Loader Specifications, Bucket Specifications, Dimensional and Operational Specifications |
| General | 14-24 | Loader Identification, General Precautions, Lubricants, Stud Bolts, Plugs, Hydraulic Fittings, Maintenance Check List, Check and Maintenance |
| Hydraulic Circuit | 28-30 | |
| Control Valve Assembly (Self-Leveling Valve) | 31-66 | |
| Relief Valve | 67-69 | |
| Spill Guard Valve | 70-76 | |
| 3rd Function Valve (Option) | 77-82 | Boom Cylinder and Bucket Cylinder |
| 3rd Function Valve Assembly (Option, Equipped with Shutoff Valve) | 83-87 | 3rd Function Valve Assembly (Option, Equipped with Shutoff Valve) |
| Boom Check Valve Assembly | 88 | |
| Hydraulic Accumulator (Option) | 89-92 | |
| Servicing | 93-129 | Dismounting Front Loader From Tractor, Chcking, Disassembling and Servicing |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Control valve stay mounting bolt | 48 to 55 N·m | p. 19 |
| Hose fitting, Flare nut (UNF) - Thread size 3/4 | 36.0 to 40.0 N·m | p. 21 |
| Main Frame Mounting Bolt Torque (M20) | 368 N·m | p. 24 |
| LA1353AU | ||
| Boom and bucket cylinder head | 575 to 605 N·m | p. 19 |
| Piston seal (LA1353AU) - Diameter C | 71.18 mm dia. | p. 119 |
| LA1353AU Rated Flow | 64.3 L/min. | p. 11 |
| LA1353AU Maximum Pressure | 20.7 MPa | p. 11 |
| LA1153AU | ||
| Piston seal (LA1153AU) - Diameter C | 60.31 mm dia. | p. 119 |
| LA1153AU Rated Flow | 42 L/min. | p. 11 |
| LA1153AU Maximum Pressure | 19.8 MPa | p. 11 |
| M5740, M7040 | ||
| Transmission Case Capacity (M5740, M7040) | 56.0 L | p. 18 |
| M8540, M9540 | ||
| Transmission Case Capacity (M8540, M9540) | 60.0 L | p. 18 |
