This Gehl service manual covers the AL140, AL240, and AL340 articulated loaders (Gehl form number 918274), built around the Yanmar 3TNV76-KGWL and 3TNV88-BKGWL diesel engines. It runs 360 pages with a full text layer, so you can search it on any device.The manual is organized by system: safety, maintenance, operation, chassis, engine, cooling, axles, hydraulics, electrical, and a dedicated troubleshooting section. It carries the maintenance schedule, fluid capacities, and torque values, plus removal and installation procedures for the engine, radiator and oil cooler, front and rear axles, and drive coupling.For diagnostics, the Hydraulics section includes troubleshooting flow charts for the hydrostatic drive system, lift and tilt circuits, and steering, while the Electrical System chapter documents the machine controller, its LED indicator assignments, and the complete electrical schematic for the AL100 series. That makes it practical for tracing weak hydraulic functions or controller faults instead of swapping parts on a guess.
What's Inside This Gehl AL140, AL240, AL340 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | - | Safety Symbol, Signal Words, Contents and Use of This Manual, Machine Orientation, Service Parts |
| Safety | - | - |
| Maintenance | - | Maintenance Schedule, Check, Clean and Inspect, Leakage Check, Lubrication and Filter Changes, Functional Check, Engine Maintenance, Fuel System |
| Operation | - | Operation Safety, Controls and Switches, Instrument Panel and Indicators, Cab Controls, Warning Indicators, Operator’s Seat and Ignition Switch, Steering Column, Hand Throttle |
| Chassis | - | Tilting the Platform, Lowering the Platform, Repairing or Replacing Platform Switch, Hood Removal, Hood Installation, Center/Steering Bearing Removal |
| Engine | - | Engine Removal, Engine Removal Preparation, AL100 Series Engine Removal, AL200 Series Engine Removal, AL300 Series Engine Removal, Engine Installation, Drive Coupling Removal |
| Cooling System | - | Radiator/Oil Cooler Removal, AL100 Series Radiator/Oil Cooler Removal, AL200 and 300 Series Radiator/Oil Cooler Removal, Radiator/Oil Cooler Installation |
| Axles | - | Service Brake Adjustment, Al 100/200 Series Service Brake Adjustment, Al 300 Series Service Brake Adjustment, Front Axle Removal, Front Axle Installation, Rear Axle Removal |
| Hydraulics | - | Work Hydraulics Troubleshooting, Hydrostatic Drive System, Hydraulics Troubleshooting Diagnostic Flow Charts, Lift and Tilt Hydraulics Diagnostics, Steering Hydraulics Diagnostics |
| Electrical System | - | Battery Removal, Battery Installation, Machine Controller, Machine Controller LED/Indicator Assignments, Machine Controller Logic, AL100 Series Complete Electrical Schematic |
| Troubleshooting | - | Indicator Lamps / Seals and Hoses, Hydraulic System, Hydrostatic Drive System, Electrical |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| AL100 Series | ||
| Wheel Fastener Torque | 165 N•m (122 lbf-ft) | p. 28 |
| Diesel Engine Oil Capacity | 4.4 L (4.6 qts.) | p. 20 |
| All Models | ||
| Hydraulic fluid and return filter replacement interval | 500 Hours (or annually) | p. 34 |
| Fuel filter replacement interval | 500 Hours (or annually) | p. 34 |
| Engine oil/filter replacement interval (after first 50 hours) | 250 Hours (or every six months) | p. 34 |
| Hydraulic fitting torque (example for M10X1.0, light application) | 13 lb.-ft. (18 N•m) | p. 356 |
| Pivot mounting bolt torque (center hinge) | 302 lb.-ft. (410 N•m) | p. 83 |
| AL100 Series (and similar for other models) | ||
| Drive coupler assembly bolts torque | 33 lb.-ft. (45 N•m) | p. 136 |
| AL200 Series | ||
| Diesel Engine Oil Capacity | 6.7 L (7.2 qts.) | p. 20 |
| AL300 Series | ||
| Diesel Engine Oil Capacity | 7.4 L (7.8 qts.) | p. 20 |
| Axle Oil (Hubs each) Capacity | 0.4 L (0.4 qt.) | p. 20 |
Gehl AL140, AL240, AL340 Common Problems This Manual Covers
Loader will not drive or loses drive
A machine that will not move or drops drive under load usually points to a transmission or hydrostatic drive fault, hydraulic pressure loss, or linkage trouble. The Hydraulics section covers the hydrostatic drive system and its diagnostics.
Manual Section: HydraulicsWeak, slow, or intermittent hydraulics
Lift and tilt functions that fade or respond slowly often trace to pump wear, low fluid, clogged filters, or internal leakage. Start with the troubleshooting diagnostic flow charts to isolate the circuit before opening components.
Manual Section: TroubleshootingSluggish or unresponsive steering
Because these loaders steer through the articulation joint, heavy or unresponsive steering usually means a hydraulic circuit issue, a steering valve problem, low fluid, or worn articulation linkage. The steering hydraulics diagnostics guide you through it.
Manual Section: HydraulicsFault indicator or controller warning
A lit warning lamp or an erratic machine controller often reflects a wiring, sensor, or logic fault. The Electrical System section documents the machine controller, its LED and indicator assignments, and its control logic.
Manual Section: Electrical SystemBrake or axle wear and adjustment
Poor braking or drivetrain noise can come from brakes out of adjustment or worn axle components. The Axles section covers service brake adjustment for the AL 100, 200, and 300 series along with front and rear axle removal.
Manual Section: AxlesPoor power or overheating after startup
A loader that runs poorly or heats up may have a restricted radiator or oil cooler, low coolant, or a lapse in maintenance. The Cooling System section covers radiator and oil cooler removal and installation for each series.
Manual Section: Cooling SystemFrequently Asked Questions
Which loaders and engines does this manual cover?
It covers the Gehl AL140, AL240, and AL340 articulated loaders under form number 918274, powered by the Yanmar 3TNV76-KGWL and 3TNV88-BKGWL diesel engines. Procedures are split across the AL100, AL200, and AL300 series where they differ.
Does it list wheel and hardware torque specs?
Yes. The maintenance material lists wheel fastener torque values, which differ by series, such as the AL100 figure versus the higher AL200 and AL300 value, so you can tighten hardware to the correct spec. p. 28
How do I troubleshoot weak or slow hydraulics?
The Troubleshooting section provides diagnostic flow charts for the work hydraulics, lift and tilt circuits, and steering, with troubleshooting tables listing possible causes and corrective actions to isolate the fault. p. 183
How is the manual delivered?
It is an instant digital download. After purchase you get the PDF to keep on your computer, tablet, or phone, with no shipping wait.
Is this Gehl AL140, AL240, AL340 Service Manual a digital download?
Instant PDF download. The full 360-page searchable Service Manual lands in your hands the moment payment clears. Open it on a laptop, tablet, or phone right in the shop.
Am I able to print pages from this Gehl AL140, AL240, AL340 manual?
Yes. The PDF carries no DRM, so print any page or section your shop needs. It works with any standard printer.
Are hydraulic system diagrams in this Gehl AL140, AL240, AL340 Service Manual?
Yes. It includes hydraulic system diagrams, circuit schematics, and component specifications.
Reviews
There are no reviews yet.