Description

GEHL SL4640, SL4840, SL5640, SL4640E, SL4840E 2009 Parts Catalog

I’ve been turning wrenches long enough to know the difference between a parts diagram that saves your Saturday and one that leaves you holding a bag of wrong bolts. This GEHL SL4640, SL4840, SL5640, SL4640E, SL4840E 2009 Parts Catalog is the real deal – direct from the factory, not some aftermarket reprint that swaps metric for standard when you aren’t looking. You need the right part number the first time, or you’re waiting another week for the dealer. That’s not a gamble I take on my shop floor, and you shouldn’t either.

7 Systems Covered – From Chassis to Hydraulics

This Parts Catalog breaks down the entire machine into two main sections. Section A covers the main loader components: chassis and control covers, wheel drives, engine components, air cleaner and muffler, coolers, hydrostatic system drive motors, and the whole hydraulic group – chassis, lift arm, auxiliary. It also includes controls for auxiliary hydraulics, lift and tilt, traction, and engine, plus lift arm, All-Tach™ and Power-A-Tach™ attachment brackets, ROPS and interior, seat and seat belt options, restraint bar, grille and engine covers, electrical for chassis, ROPS, lights, ignition switch (earlier models), control, sound suppression, tires, and decals. That’s over 200 pages of part breakdowns with exploded views.

Section B dives into hydraulic components: lift cylinder, tilt cylinder, drive motors (single and two-speed), tandem pump, single and double gear pumps, self-level valve, solenoids for lift/tilt and brake, and the main control valve. Every page uses OEM part numbers – no guesswork about which bearing fits which pump. Page 19 shows the engine assembly with every seal, gasket, and bolt called out. Page 217 lists tire options with proper load ratings.

Does This Manual Cover the Fuel System?

Yes, indirectly through the engine section. The engine grouping includes fuel injection components, filters, and lines. But this is a parts catalog, not a service manual. It tells you the part numbers for injectors, nozzles, and lift pumps, not how to time the pump. If you need repair procedures, grab the Gehl SL4640 SL4840 SL5640 SL6640 Service Manual for torquing main bearing caps and setting valve lash. For engine-specific part numbers, the GEHL SL4640 SL4840 SL5640 SL6640 Engine Parts Manual has deeper coverage of internal engine components. And if you’re working on the E-series models, the GEHL SL4640E SL5240E 2010 Parts Catalog matches the later production changes.

Why You Need Factory OEM Documentation

I’ve had customers bring me aftermarket catalogs that list a $50 pump seal that turns out to be the wrong durometer – leaks within a week. GEHL published this manual in 2009 with revision J. It uses genuine GEHL part numbers, includes notes about equivalent-quality tires and locally purchased batteries (page 2), and flags nonstandard torque values behind the part description. You won’t find that level of accuracy in a third-party compilation. The manual explicitly says: “Items shown in the parts list that do not have part numbers are shown for reference purposes only and are NOT available for purchase.” That’s transparency you can trust.

3 Reasons to Choose OEM Documentation

• Every part number is verified against the factory assembly line – not a reverse‑engineered guess.
• The manual includes the manufacturer’s own abbreviations table (AMP, CCA, PSI, etc.) so you read the drawing correctly.
• Standard attaching hardware torque values are on the inside back cover – you can quickly check that the bolt holding your wheel motor is tight enough without damaging the housing.

Engine Overhaul Coverage

The engine section (starting on page 19 in the catalog) covers naturally‑aspirated and turbocharged variants as fitted to the SL4640, SL4840, SL5640, SL4640E, and SL4840E. You get exploded diagrams of the block, cylinder head, oil pan, and fuel system. If you’re rebuilding the power plant, use this catalog to order pistons, rings, bearings, and gaskets with the correct OEM numbers. For deeper understanding of diesel combustion principles, you can check this Wikipedia article on diesel engines. But for parts, stick to the factory source.

Audience Fit – Who Needs This Catalog

You’re a home garage enthusiast or a small shop owner who wants to order the right part without calling the dealer every time. If you own a SL5640 and need a new drive motor, flipping to page 235 gives you the exact part number for the single‑speed or two‑speed motor. If you’re tracking down a hydraulic leak on the tilt cylinder, page 233 shows the seal kit number. Beginners benefit from the clear exploded views – each component is numbered and cross‑referenced to a list with quantities and notes. No guesswork.

Source Validity – Why This Isn’t a Reprint

This is a direct digital copy of the official GEHL Parts Manual, form number 917000, revision J, dated 09/09. It includes the original page 2 introduction that states “use only genuine GEHL service parts.” The PDF is 350 pages of factory‑sourced content. Aftermarket catalogs often delete the notes about nonstandard torque values or omit the abbreviation table – that’s how you end up with a stripped thread. This manual keeps every detail intact.

Frequently Asked Questions

Is this the same manual a GEHL dealer uses?

Yes. This is the identical parts catalog that GEHL dealers pull part numbers from when you call the counter. It’s form 917000 revision J, dated 2009.

Does it include part numbers for the SL4640E and SL4840E?

Yes, the cover lists SL4640E and SL4840E. The engine and hydraulic sections cover both standard and E‑series models. Note that the SL5640E is not included in this specific catalog – you would need the SL6640 supplement for that variant.

Can I use this to rebuild my hydrostatic drive motor?

This catalog gives you the part numbers for seals, bearings, and the complete motor assembly. You still need a service manual for disassembly and torque specs. The catalog itself does not include step-by-step rebuild instructions.

What if I need a part that is listed as “N/A” or “REF”?

Items marked “N/A” are not applicable to that specific model. Items marked “REF” are shown for reference only and cannot be ordered – they are typically part of a larger assembly that must be purchased as a unit. Check the assembly diagram to see if the component is integral to a subassembly.

You’ve read the details. You know the risks of using a generic parts list. Get the factory numbers, the exploded views, and the torque note references that keep your machine running without comebacks. Access the Factory Manual now and keep a copy in your shop tablet.