Factory-written for one machine, your 2005 All-Wheel-Steer Loader, this 172-page manual (OEM #918114 Revision A) runs from the fuel injection system to the variable displacement pump A 10 VG 28 DA and every axle seal between. Hydraulic schematics cover pilot control, float position, and the 4th control circuit; wiring diagrams spell out terminal descriptions, cable color coding, and full relay identification. The power train section walks pump adjustment and pressure cut-off step by step, and 12 pages of exploded views span the axles, hydraulics, and loader unit. Torque the hydraulic return filter cap to 15 lb.-ft. (20 Nm), and don't push that filter swap past 1,500 service hours. Stop chasing specs across forum threads: download it, jump to any section with built-in bookmarks, and put the machine back to work.
What's Inside This Gehl 280 Manual
| System | Pages | Key Topics |
|---|---|---|
| Specifications | 9-26 | Engine Type Decal |
| Maintenance | 27-64 | Fluids and Lubricants, Explanation of Symbols for the Maintenance Decal, Maintenance Schedule, Maintenance Items, Refueling (Stationary Fuel Pumps), Fuel Prefilter |
| Engine | 65-76 | Engine Overview, Fuel Injection System, Fuel Injection Nozzle, Engine Valve Tip Clearance, Engine Cooling: Overview, Fuel System: Overview, Engine Trouble |
| Power Train | 77-94 | Description: Variable Displacement Pump a 10 Vg 28 Da, Description: Hydraulic Motor Vm 45 Ez 6, Fuel System: Overview, Measuring Points: Variable Displacement Pump |
| Axles | 95-112 | Type Decal – Axle, Drain, Fill and Check Plug, Tightening Values Lb-Ft, Screw Connections |
| Brakes | 113-118 | Overview: Brake System, Readjustment: Parking Brake (Replacing Brake Linings), Basic Setting: Cables (for Inching, – Parking Brake, For Parking Brake) |
| Steering | 119-124 | Overview – Steering Circuit, Steering Diagram, Hydraulic Circuit: Steered to the Left, Hydraulic Circuit: Steered to the Right, Hydraulic Ports on Servostat |
| Electrical System | 125-148 | Ohm's Law; Power, Measuring Equipment, Measuring Methods, Terminal Description, Cable Color Coding |
| Hydraulics | 149-166 | Hydraulics Diagram – Pilot Control, Hydraulics Diagram – Float Position, Hydraulic Circuit: Pump – Control Valve – Tank, Overview: Control Valve, Hydraulic Ports on Control Valve |
| Heating | 167-170 | Heating Circuit: Overview, Heater Nozzle, Heater, Reflux |
| Torque Specifications | 171 | Torque Value Units and Conversion, Unified National Thread, Metric Course Thread |
| California Proposition 65 Warnings | 172 | Diesel Engine Exhaust and Constituents Warning, Battery Post, Terminals and Related Accessories Warning, Hand Washing After Battery Handling |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| General Torque Specifications Table | Refer to the table on page 171 for Unified National Thread and Metric Course Thread torque values (Dry and Lubed) for Grades 2, 5, 8, 8.8, 10.9, and 12.9. | p. 171 |
| Troubleshooting guide for hydraulic system | Refer to 'Test and setting instructions for work hydraulics' on page 164, which includes a 'Test report' model for various hydraulic parameters like work hydraulics pressure, tilt pressure, steering pressure, and additional control circuits. | p. 164 |
| Hydraulic oil return filter replacement interval | At the latest after 1500 service hours (yearly) | p. 49 |
| Hydraulic oil return filter cap tightening torque | 15 lb.-ft. [20 Nm] | p. 49 |
| Hydraulic hose replacement interval | every six years from the date of manufacture | p. 50 |
| Drain plug seal instruction | Only use new sealing rings for oil filler and drain plugs. | p. 27 |
| Hydraulic oil tank capacity | About 17 gal. (65 L) | p. 27 |
| Hydraulic oil type | HVLPD 46 (HYD0530) (ATF 46), AVILUB Syntofluid 46 (bio-oil), PANOLIN HLP Synth 46 (bio-oil) | p. 27 |
| Parking brake lever setting | 4 – 5 notches on the parking brake lever | p. 117 |
| Brake/inching pedal fastening clearance | 0.59 – 0.62'' (15 – 16 mm) | p. 118 |
| Engine Output | 38 hp (28 kW) at 2400 rpm | p. 16 |
| Max. Engine Torque | 97 –105 lb.-ft. (132 –143 Nm) @ 1600 rpm | p. 16 |
Gehl 280 Common Problems This Manual Covers
Lift and tilt run weak, slow, or quit responding altogether. p. 164
Test work-hydraulics pressure using the procedure on page 164. Confirm the system reaches its 3480 ±73 psi (240 ±5 bar) maximum service pressure. If it falls short, check the control valve ports and bleed air from the system.
Manual Section: Work Hydraulics: Test and Setting InstructionsHydraulic fluid leaking heavily around the return filter housing or reservoir drain plug area. p. 49
Inspect the hydraulic oil return filter cap on page 49 and torque it to 15 lb.-ft. (20 Nm). If the bottom still seeps, drain the 17 gal. (65 L) tank and fit a new drain-plug sealing ring.
Manual Section: MaintenanceEngine cranks but won't start, idles roughly, or loses power under moderate load. p. 74
Check the engine trouble charts on page 74 for no-start causes. Measure valve tip clearance on page 65, setting both intake and exhaust valves to .008'' (0.2 mm). Then drain any water from the fuel prefilter.
Manual Section: Engine TroubleLoader inches forward while parked or parking brake pedal linkage feels dangerously loose. p. 117
Adjust the parking brake so it bites firmly within 4 to 5 notches of lever travel, per page 117. Then verify the inching pedal fastening clearance on page 118 reads 0.59 to 0.62'' (15 to 16 mm).
Manual Section: Brakes: Readjustment and ReplacementFrequently Asked Questions
How do I reset the Gehl 280?
There's no whole-machine reset; the only one the manual documents is for the air filter maintenance indicator. After swapping the filter cartridge, press reset button A to clear red mark C in maintenance display B.
What are the torque specs for Gehl 280 wheel loader bolts?
The manual provides general torque values for Unified National Thread and Metric Course Thread fasteners, in lb-ft (Nm) for both dry and lubed conditions, across Grades 2, 5, 8, 8.8, 10.9, and 12.9. Specific components are called out as well: wheel nuts at 221 ±15 lb.-ft. (300 ±20 Nm), plus axle values like 26 lb-ft (35 Nm) and 88 lb-ft (120 Nm).
How do I clear the service light on a Gehl 280?
That service light is the air filter maintenance indicator. Once you've fitted a new filter cartridge, press reset button A; red mark C in maintenance display B then clears. The maintenance section covers the step.
How do I troubleshoot hydraulic problems on a Gehl 280?
Start by checking the hydraulic oil level glass for cloudiness, a sign that water or air has entered and may damage the pump. Use only sufficient, correct, uncontaminated oil. Page 164 (36-16) also gives a 'Test report model' for work hydraulics, with parameters such as max. engine speeds (3408 – 3480 psi) and tilt pressure (1668 – 1958 psi).
How will I receive this Gehl 280 Service Manual?
You'll get a 172-page searchable PDF to download right away. It opens on any device, so you can pull it up on your phone at the machine. No shipping, no waiting.
Can I print specific sections of this Gehl 280 Service Manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Does this Gehl 280 manual include wiring diagrams?
Complete wiring diagrams are included, covering all electrical circuits, harness routing, and connector pinouts for the Gehl 280.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and copy the full text. The text throughout is crisp and easy to read, with no blurriness or fading. Diagrams and illustrations are a mix of clear raster images and line drawings, with all labels remaining readable at various zoom levels. Pages are generally clean with no significant scan artifacts, stains, or skewed content. There are a few blank "NOTES" pages and one completely blank page at the beginning, which serve as filler.
Reviews
There are no reviews yet.