Part of the Kubota Repair Manuals.
This is the factory service manual for the Kubota 4540 backhoe attachment, delivered as a downloadable PDF you can open on any phone, tablet, or computer. It covers the 4540 and 4540a, walking through backhoe specifications, nomenclature, hydraulic troubleshooting, control valve service, PTO pump overhaul, and full cylinder rebuilding.
Owners and independent mechanics use it to diagnose weak or erratic hydraulics, rebuild the lift, crowd, curl, swing, and stabilizer cylinders, and set the correct relief pressures and torque values. Removal and reinstallation procedures, lubrication intervals, and a parts listing for the mainframe, boom, dipper, and operator's platform are all included.
Because it is the same information a dealer technician would reference, you can work through a repair step by step instead of guessing, whether you are chasing a hydraulic fault or servicing the machine for the season.
What's Inside This Kubota 4540 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Decals | Representations of Decals, Individual Numbers, Usage Location, Complete Kit | |
| Specifications | Digging Depth, Swing Arc, Loading Height, Reach, Digging Force, Lift Ability | |
| Backhoe Nomenclature | Swing Frame, Boom, Dipperstick, Bucket, Cylinders, Controls | |
| Torque Tightening Chart | U.S. Bolt Torque, Metric Bolt Torque, Special Torque Applications, Oil Filter Head, Hydraulic Pump Bracket, Control Valve Tie Rod Fasteners | |
| Hydraulic Troubleshooting | System Flow, Main System Relief, Workport Relief, Control Valve Port Connections, Hose Connections, Anti-Cavitation Fittings | |
| Backhoe Controls | Joystick System, Boom & Swing Lever, Crowd & Curl Lever, Stabilizer Control Levers | |
| Backhoe Control Valve | Open Center Valve, System Relief Valve, Workport Reliefs, Anti-Cavitation Fittings, Spools, O-Rings | |
| PTO Pump Overhaul | Pump Body, Gears, Pressure Plate, Shafts, Bearings, O-Rings | |
| Cylinder Service | Testing Cylinders, Internal Leakage, Swing Cylinders, Lift, Crowd, Curl & Stabilizer Cylinders, Rebuilding Procedures | |
| Removing & Reinstalling the Backhoe | Removal Instructions, Reinstallation Instructions | |
| Lubrication & Maintenance | Backhoe Lubrication Fittings, Backhoe Hydraulic System Service, Backhoe Bucket Service | |
| Mainframe & Stabilizers | Mainframe, Hydraulic Tank, Stabilizer Arm, Stabilizer Cylinder, Stabilizer Pad, Mount Brackets | |
| Swing Frame, Boom, Dipper & Bucket | Swing Frame, Boom, Dipperstick, Bucket, Lift Cylinder, Crowd Cylinder | |
| Operator's Platform & Controls | Operator Seat, Platform, Hand Rail, Console, Joystick Controls, Stabilizer Control Levers | |
| Hydraulic Pump & Hoses | PTO Pump, Pump Overhaul, Hydraulic Hoses, Oil Filter, Breather, Hydraulic Oil | |
| Cylinders | Lift Cylinder, Crowd Cylinder, Curl Cylinder, Stabilizer Cylinder, Swing Cylinder, Seal Kit |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Control Valve Tie Rod Fasteners Torque | 15 ft. lbs. (20 N·m) | p. 10 |
| Main System Relief Pressure | 2000 psi | p. 12 |
| Oil Filter Head to Platform Mount Plate Fastener Torque | 7-9 ft. lbs. (9-12 N·m) | p. 10 |
| Backhoe Hydraulic System Capacity (excluding cylinders) | 11-1/2 gallons | p. 23 |
| Control Valve Tie Rod Nut Torque (Final) | 15 ft. lbs. (20 Nm) | p. 16 |
| Cylinder Piston Locknut Torque | 160-180 ft. lbs. (215-245 N·m) | p. 20 |
| Relief Valve and Anti-Cavitation Fitting Installation Torque | 10 to 15 ft. lbs. (13-20 N·m) | p. 15 |
| Swing Workport Relief Pressure | 1400 psi | p. 12 |
| Cylinder Rod Locknut Torque | 160-180 ft. lbs. (215-245 N·m) | p. 20 |
| Hydraulic System Flow | 12.5 gpm | p. 12 |
| Crowd Workport Relief Pressure | 2300 psi | p. 12 |
| Digging Force (Curl Cylinder) | 3980 lbs | p. 8 |
