The LA714AU and LA854AU call for different torque values, and this OEM Kubota manual (#9Y111-04020) covers both across 55 pages. It walks the parallel-linkage self-leveling system, the hydraulic circuit and oil flow, and the control valve assembly with its 4-position bucket control and 3rd-function option, then takes each model through full dismount and rebuild. Hydraulic schematics trace oil from pump to cylinder, 10 pages of exploded views show how the assemblies fit together, and wiring for the 3rd-function solenoid is here for electrical work. Torque tables run from general fasteners and stud bolts through metric and UNC/UNF hardware, hydraulic fittings, and plugs. Mind the model split: the LA714AU boom cylinder head takes 380-400 N·m, the LA854AU jumps to 580-600 N·m. Save it once and open it on a tablet at the machine.
What's Inside This Kubota LA714AU, LA854AU Manual
| System | Pages | Key Topics |
|---|---|---|
| Information | 3-12 | - |
| General | 13-24 | Loader Identification, Lubricants |
| Mechanism | 25-37 | Self-Leveling (Parallel Linkage Type, Port Relief Valve), Hydraulic Circuit (Oil Flow), Hydraulic Block, Control Valve Assembly (Position Bucket Control Type) |
| Servicing | 38-55 | Control Valve, Port Relief Valve, 3rd. Function Valve, Hydraulic Cylinders, Hydraulic Hoses, Piston Rod Assembly, Cylinder Head, Piston |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| LA714AU | ||
| Boom and bucket cylinder head mounting torque | 380 to 400 N·m (281 to 295 lbf·ft) | p. 41 |
| Boom cylinder piston mounting nut | 165 to 185 N·m (122 to 136 lbf·ft) | p. 41 |
| Relief valve setting pressure | 17.1 to 18.1 MPa (2480 to 2620 psi) | p. 44 |
| LA854AU | ||
| Boom cylinder head mounting torque | 580 to 600 N·m (428 to 442 lbf·ft) | p. 41 |
| Bucket cylinder head mounting torque | 460 to 480 N·m (340 to 354 lbf·ft) | p. 41 |
| Transmission case capacity | 45 L (11.9 U.S.gals, 9.9 Imp.gals) | p. 17 |
| Relief valve setting pressure | 18.1 to 19.1 MPa (2630 to 2770 psi) | p. 44 |
| All Models | ||
| Gap between boss and lock nut for hydraulic hose fitting | 2 to 3 mm (0.08 to 0.12 in.) | p. 50 |
| Tightening torque for Hose fitting, Flare nut (UNF) 9/16 thread size | 22 to 25 N·m (17 to 18 lbf·ft) | p. 20 |
| Main frame bolt tightening torque | 226 N·m (166 lbf·ft) | p. 23 |
| Main frame mounting bolt and nut | 226 N·m (166 lbf·ft) | p. 41 |
| LA714 | ||
| LA714 Wheel Base | 1895 mm | p. 11 |
Kubota LA714AU, LA854AU Common Problems This Manual Covers
Kubota LA714AU loader boom movement is slow, jerky, or completely weak under heavy load p. 44
Inspect the hydraulic filter and confirm fluid level first. Swap out transmission fluid if it's contaminated. Reset the main relief valve to 17.1 to 18.1 MPa (2480 to 2620 psi) per page 44, then clean any sticking relief valves to bring boom speed back.
Manual Section: TroubleshootingOne side of the loader frame twists or moves out of sync during attachment use p. 41
Examine the support bar and crossmember for damage after heavy brush work. Confirm the main frame mounting bolt and nut torque, then tighten all main frame bolts to 226 N·m (166 lbf·ft) per page 41. Replace any bent linkage right away.
Manual Section: Servicing SpecificationsFront end loader drops by its own weight or boom cylinder loses holding pressure p. 40
Measure the boom cylinder for tube wear and piston ring damage. Confirm piston rod bend stays within the 0.25 mm allowable limit shown on page 40. Look over the tube joints for oil seepage, and rebuild the cylinder if it's leaking internally.
Manual Section: TroubleshootingHydraulic fluid leaks around the control valve fittings or quick coupler hose connections p. 50
Check the clearance between the boss and lock nut on every hydraulic hose fitting. Set the gap to 2 to 3 mm (0.08 to 0.12 in.) per page 50, then torque the 9/16 UNF flare nuts to 22 to 25 N·m.
Manual Section: Servicing SpecificationsFrequently Asked Questions
What are the torque specs for Kubota LA714AU / LA854AU loader pins, bolts, and cylinders?
Torque values are broken out by model. On the LA714AU, the boom and bucket cylinder head mounts at 380 to 400 N·m (281 to 295 lbf·ft) and the boom cylinder piston nut at 165 to 185 N·m (122 to 136 lbf·ft). On the LA854AU, the boom cylinder head jumps to 580 to 600 N·m (428 to 442 lbf·ft) and the boom and bucket cylinder piston nut to 300 to 320 N·m (222 to 236 lbf·ft). General screws, bolts, and nuts carry their own specs by size and material grade, listed on page 18.
What do Kubota LA714AU / LA854AU error codes or hydraulic warning symptoms mean?
There are no error codes on this machine; instead you get a symptom-based troubleshooting guide. If the boom won't rise, suspect a malfunctioning control valve, a defective boom cylinder, or a clogged oil filter. If boom speed is insufficient, the cause is often a worn or damaged cylinder tube or piston ring, or relief valve pressure set too low, which the LA714AU wants adjusted to 17.1 to 18.1 MPa (2480 to 2620 psi).
How do I check and service the transmission fluid on a Kubota LA854?
Transmission fluid is part of the daily maintenance checklist on the LA854. Read the level at gauge (1) and top up to the prescribed mark if it sits low. Stick to KUBOTA UDT or SUPER UDT only, since other oils can damage the transmission or hydraulic system. The LA854 transmission case holds 45 L (11.9 U.S.gals, 9.9 Imp.gals).
What is the startup/shutdown procedure for a Kubota LA854 front loader?
Before you start, put all shift levers in neutral or disengaged and crank the engine only from the operator's seat. To shut down, park on stable, level ground, set the parking brake, lower the implement, stop the engine, and pull the key. Heading into service adds two steps: disconnect the battery negative cable and hang a 'DO NOT OPERATE' tag in the operator station.
How quickly can I access this Kubota LA714AU, LA854AU manual after buying?
Checkout gives you the 55-page searchable PDF as an instant download. Open it on a laptop, tablet, or phone and take it straight to the shop floor.
Can I print this Kubota LA714AU, LA854AU manual?
Yes, print as many copies as you like; there are no restrictions. Plenty of mechanics just print the section they're working on and keep it at the bench.
Are hydraulic system diagrams in this Kubota LA714AU, LA854AU Workshop Manual?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
Document Quality
This document is a high-quality, native digital PDF, not a scanned copy. You can search and copy the full text, as it includes a fully functional OCR layer. All text is exceptionally crisp and easy to read, with no blurriness or fading present on any page. Diagrams and illustrations are vector-based, ensuring they remain sharp at any zoom level, and all labels are clearly legible. The pages are clean, free of scan artifacts, stains, or skewed content, though there are a few intentional blank filler pages marking new sections.
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