Description

GEHL SL3515, 3615 Parts Catalog – Factory OEM Parts Manual

When you’re ordering parts for a skid loader, the last thing you want is a wrong number that sends you back to the dealer. I’ve seen guys guess at part numbers from aftermarket catalogs and end up with the wrong hydraulic pump or a bracket that doesn’t line up. That’s wasted time and money. GEHL SL3515, 3615 Parts Catalog is the original factory document – 80 pages of exploded diagrams and part callouts that genuine GEHL service writers used. No guessing.

Most aftermarket parts lists skip the small details like which revision of a hydraulic motor fits which serial number range. This catalog doesn’t. It breaks every assembly down by model and serial number break. You get decal locations, fuel tank and rear grill assemblies, overhead guard and seat parts, axles and drive chains – everything down to the cotter pins. Need the wiring layout? Pages 12-13 show the instrument panel, wiring harness, and battery mount. Hand brake linkage is on pages 18-19 with the motor mounting plates. Every fastener is called out with grade and thread specification.

GEHL SL3515, 3615 Parts Catalog: 80 Pages of Factory Data

Fuel system components start on page 6 with the chassis, fuel tank, rear grill, and access covers. The catalog follows a logical flow from the frame outward. You’ll find the lift/tilt control lever and throttle linkages on pages 14-15, traction control lever on pages 16-17, and the complete hydrostatic system split by model – SL3515 only on pages 26-27, SL3615 only on pages 28-29. Each section has a clean exploded view with numbered balloons. The parts list sits beside the diagram with quantities, descriptions, and the GEHL part number. No cross-referencing two different pages to figure out which nut goes where.

Where Are the Wiring and Brake Diagrams?

Wiring is covered on pages 12-13 as part of the instrument panel assembly. You get the battery cables, key switch routing, and connector part numbers. Brake components appear on pages 18-19 under “Hand Brake & Motor Mounting Plates.” The hand brake lever, cable, and mounting hardware are all illustrated. If you need the brake linkage for a specific serial number range, the catalog flags it with “After SN” and “Before SN” notes – something aftermarket reprints routinely leave out. That kind of detail keeps you from ordering a cable that’s half an inch too short.

Gas Engine (SL3515) vs Diesel (SL3615): What’s Different?

Engine sections are separated by model. Gas engine for the SL3515 has two serial number splits – after SN6825 on pages 32-33, before SN6826 on pages 34-35. The diesel engine for the SL3615 is on pages 36-37. If you’re working on a diesel, this Wikipedia article on diesel engines gives background on common diesel principles, but the part numbers here are direct from GEHL. The muffler, air cleaner, and alternator sections also carry serial number splits – after SN6825 (SL3515) and SN5200 (SL3615) on pages 38-39, before those breaks on pages 40-41. Radiator sections are model-specific as well: SL3515 on pages 42-43, SL3615 after SN4225 on pages 44-45, before SN4226 on pages 46-47.

Understanding the Torque Spec and Hardware Tables

Inside the back cover you’ll find standard attaching hardware torque values. The manual specifically states that unless otherwise specified, all cap screws or bolts are Grade 5, cadmium or zinc plated, with hexagon nuts for Grade 5 bolts being Grade B. That’s not the engine head bolt torque – that information belongs in the service manual. But for the mounting hardware on every assembly listed in this catalog, the torque table gives you the number. There’s also an Attaching Hardware Table that cross-references fastener part numbers. When you order a replacement bolt, you get the correct grade and thread. No more guessing whether that M10 is a Grade 8 or a Grade 5.

Hydraulics and Options: The Dense Stuff

The hydraulic section (pages 48-55) covers pumps, motors, valves, and cylinders. Webster gear pump, Columbus tilt and lift cylinders, relief valves at 1000 and 1200 PSI, main control valve, drive piston pumps – left and right sides, each with serial number breaks. Hydrostatic drive motors and auxiliary control valves are also in there. Options and accessories run from page 59 to 68: horn kit, drawbar, grapple fork, buckets, heater and defroster kits, back-up alarm, pallet fork. Each option has its own exploded diagram and parts list. If you’re ordering a replacement alternator kit or an enclosed alternator kit, those are separate part numbers on page 65. The numerical index on pages 70-74 lets you look up any part number and find which page it appears on. That’s a time-saver when you’ve got a bucket of old parts and need to reorder from the numbers you can still read.

3 Reasons to Stick with Factory Parts Catalogs

First, the serial number splits eliminate the “maybe it fits” guesswork. Second, the hardware callouts include grade, thread, and torque reference – not just a generic bolt graphic. Third, the options section covers factory accessories that aftermarket lists rarely document. When you need a part for a SL3515 or 3615, this catalog is the source. For other GEHL models, GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog and GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs and GEHL RS6-34 2013 Parts Catalog – Factory OEM Manual follow the same factory format.

FAQ

Is this the same as a service or repair manual?

This is a parts catalog with exploded views and part numbers – not a service manual.

Does this catalog include torque specs for bolts?

Yes. The inside back cover contains a torque specification table for standard attaching hardware. The manual notes that unless otherwise specified, all cap screws or bolts are Grade 5, cadmium or zinc plated. Hexagon nuts for Grade 5 screws are Grade B. The torque values apply to the hardware listed in the assemblies. However, this is not a comprehensive repair manual – it lists torque for standard fasteners, not for specific engine or hydraulic components. For critical torque like cylinder head bolts, you need the service manual. That said, for most mounting bolts, the table on the inside back cover gives you the number you need. The catalog also references the Attaching Hardware Table for part numbers of related fasteners. So yes, torque specs are present, but limited to standard hardware.

How do I locate the correct part number for my SL3515?

Use the numerical index on pages 70-74. Find the part description or previous part number, then cross-reference to the exploded view page. Always verify model and serial number from the decal inside the right chassis riser.

What is the total page count and format?

80 pages, PDF format.

This catalog belongs on your tablet or printed out next to the machine. When you need a part, you verify the number here first. Stop playing the guessing game with aftermarket lists. this Wikipedia article on diesel engines covers the engine basics if you need background, but for parts ordering, stick with the factory data. Access the Factory Manual now and keep your parts ordering straight.