Fresh tires going on, lift arm pivots due for a check, a safety interlock that won't release the controls: this 90-page Gehl SL7600, SL7800 operator manual PDF (form 908274) covers that kind of morning for both skid steer loaders. Controls and safety equipment take up the largest share of the book, from the operator restraint bar and interlock system to the lift arm support device, before the operation section covers starting the engine, changing attachments and working a bucket. Troubleshooting charts sort electrical, engine and hydrostatic faults; the maintenance schedule sets intervals for oils, drive chain, cooling and tire pressure. After mounting a wheel, recheck the nuts every two hours until they hold 180 ft-lbs (244 N·m), and torque your lift arm pivots to 240 ft-lbs (325 N·m). Guess at pivot torque and you pay for it in a wallowed pin bore. The file is bookmarked and text-searchable, and once you buy it, it stays yours for as long as you run this loader.
What's Inside This Gehl SL7600, SL7800 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 4-7 | Machine Maintenance, Service Procedures, Safe Operation, Attachment Usage, Service Parts |
| Safety | 8-17 | Potential Hazards |
| Controls and Safety Equipment | 18-36 | Operator Restraint Bar, Safety Interlock System, Lift Arm Support Device |
| Operation | 37-47 | Starting the Engine, Changing Attachments, Using a Bucket |
| Service | 48-65 | Dealer Services, Loader Raising Procedure, Engine Compartment Access |
| Troubleshooting | 66-73 | Electrical System, Engine, Hydrostatic System |
| Maintenance Schedule | 74-77 | Engine Oil, Hydraulic Oil, Drive Chain, Cooling System, Tire Pressure, Lift Arm Pivots |
| Specifications | 78-83 | Operating Weight, Engine Displacement, Hydraulic System Pressure, Electrical System, Fluid Capacities, Sound Levels |
| Torque Specifications | 86 | Grade 2 Hardware, Grade 5 Hardware, Grade 8 Hardware, Metric Grade Hardware |
| Warranty | 87-90 | Genuine Parts, Labor Costs, non-Gehl Warranties, Maintenance Service, Incidental Damages |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Wheel nut torque | 180 ft-lbs (244 N·m) | p. 61 |
| Lift arm pivot torque | 240 ft-lbs (325 N·m) | p. 61 |
| Battery voltage | 12 volt | p. 64 |
| Battery | 12 Volt DC with 950 CCA min. | p. 78 |
| Main Hydraulic System Pressure | 3300 psi | p. 78 |
| 7600 | ||
| Operating Weight (7600) | 9745 lb | p. 78 |
| SAE Rated Operating Load (7600) | 3150 lb | p. 78 |
| 7800 | ||
| Operating Weight (7800) | 9955 lb | p. 78 |
| SAE Rated Operating Load (7800) | 3600 lb | p. 78 |
Gehl SL7600, SL7800 Common Problems This Manual Covers
Gehl SL7600 and SL7800 starter will not engage when the key is turned to START
Check that the seat and restraint bar switches are activated, then clean, retighten and verify the battery terminals, cables and starter relay connections following page 66. Before touching the battery or wiring, turn the battery disconnect switch OFF (page 64). Recharge or replace a discharged battery. If a switch, starter relay or solenoid is faulty, contact your dealer; never bypass the interlock (page 19).
Manual Section: Electrical System Troubleshooting p. 66Engine turns over but will not start with slow cranking speed in cold temperatures
Return the control valves to neutral, refill an empty fuel tank and replace plugged fuel filters following page 68. Check connections and voltage at the glow plug module and fuel shut-off solenoid. Recharge or replace a weak battery (12 Volt DC, 950 CCA min., page 78) and install a block heater for cold weather. Never use ether with the preheat system (page 38), and crank no longer than 15 seconds (page 37).
Manual Section: Engine Troubleshooting p. 68Engine overheats during operation and the engine coolant temperature warning light comes on
Stop the engine, let hot components cool (page 58), and never remove the cap while coolant is hot (page 62). Add coolant if low, set crankcase oil to the correct level, and with the engine OFF clear blocked fan airflow following page 68. Replace a restricted air filter, tighten a loose fan belt, and remove exhaust restriction once it cools. Contact your dealer if the fan shroud is mispositioned.
Manual Section: Engine Troubleshooting p. 68One drive side does not move in either direction while the other side operates normally
Check the pump serving the dead side following page 70: the rear hydrostatic pump handles the left side, the front pump the right. Tighten a loose pump arm control lever and reattach disconnected control rod linkage. If both are secure, or the side fails in only one direction, the relief valves or pump are suspect: contact your dealer. Lower the lift arm before servicing the hydraulic system (page 60).
Manual Section: Hydrostatic System Troubleshooting p. 70Hydrostatic drive system is noisy when the hydraulic oil is cold and heavy
Allow a longer warm-up, or replace the oil with the proper viscosity oil following page 70. With the lift arm lowered (page 60), check the reservoir oil level and fill as needed. To purge air, cycle the lift and tilt cylinders to maximum stroke and hold pressure briefly. If the noise persists, contact your dealer about internal damage or leakage in the drive motors or hydrostatic pumps.
Manual Section: Hydrostatic System Troubleshooting p. 70Auxiliary hydraulics or high flow auxiliary will not function or runs slowly with an attachment connected
Lower the restraint bar first. With the lift arm lowered (page 60), check the spool lock solenoid connections and tighten or replace a loose or broken load sense signal line following page 73. For slow high flow, readjust the control linkage for full spool travel, raise engine speed, add hydraulic oil and allow longer warming. Never bypass the restraint bar or seat switch (page 19); contact your dealer for switch or compensator faults.
Manual Section: Hydraulic System Troubleshooting p. 73Frequently Asked Questions
How do I reset the air filter restriction indicator?
After fitting a clean element, push the reset button located at the end of the indicator to reset it. p. 56
What are the torque specifications for the Gehl SL7600/SL7800?
Torque values depend on the thread size and grade. For example, a 1/2-13 Grade 5 bolt has a dry torque of 75 ft-lbs and a lubed torque of 55 ft-lbs. Refer to the Torque Specifications chart on page 86 for all specific hardware values. p. 86
How do I troubleshoot a loader that will not start?
Check if the battery is discharged, the battery disconnect switch is OFF, or if the seat/restraint bar switches are not activated. Ensure the controls are in neutral and the parking brake is engaged. Refer to the Electrical System troubleshooting table on page 66 for more causes. p. 66
What are the engine oil filter replacement specs for the Gehl SL7600, SL7800 skid steer?
The Gehl part number for the engine oil filter element is 137500. When installing, put clean oil on the new gasket and tighten the filter 1/2 turn past the point where the gasket contacts the filter head. p. 48
What is the hydraulic reservoir capacity on the Gehl SL7600, SL7800 skid steer loader?
The hydraulic reservoir has a capacity of 15 U.S. gallons (56,8 liters). p. 78
What exactly do I receive with this Gehl SL7600 Operator Manual?
You get a 90-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print this Gehl SL7600 manual?
Yes. Print the sections you need to take out to the shop for your own use. Standard letter or A4 paper works.
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