Description

GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog

You’ve been there – the machine is down, you need a replacement seal, and the aftermarket diagram doesn’t even match the bolt pattern on your hydraulic block. That’s why you need the GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog. 286 pages of OEM exploded views, factory part numbers, and the kind of detail that only comes from the people who built the loader. No vague line drawings. No “reference only” crap from third-party publishers. This is the actual document GEHL dealers use to order parts – and now you have it on your screen.

I’ve been turning wrenches for 28 years, and I can tell you the difference between a factory parts book and a reprint. This one prints clean, pages are numbered, and the abbreviations table on page 2 will save you from calling the dealer to ask what “NILN” means. (It’s nylon insert lock nut, by the way.)

Engine Parts Breakdown: What’s Covered on Page 17

Section A kicks off with the Engine chapter starting on page 17. Air cleaner, muffler, coolers – it’s all there with exploded views and callouts. If you need a gasket for the intake manifold or a specific bolt for the turbo housing, you’ll see the part number next to the illustration. No flipping between pages guessing which fastener goes where. The manual also includes the standard attaching hardware torque values on the inside back cover – you won’t find that in a generic parts list.

286 Pages of Exploded Views

That’s 286 pages of nothing but parts. Chassis, wheel drives, hydraulics (chassis, lift arm, auxiliary), controls, electrical, ROPS, seat, decals, and all the hydraulic components in Section B – cylinders, drive motors, pumps, valves. Each section is broken down by subsystem. Need a solenoid for the brake? Check page 225 in Section B. The organization is logical, and the index at the front points you straight to the right section.

Does This Manual Include Torque Specs?

Yes, but only for standard attaching hardware – those are on the inside back cover. For non-standard torque values, the manual notes them in parentheses behind the part number description. If you need full engine overhaul torque specs with tightening sequences, you’ll want the service manual, not this parts catalog. Grab the Gehl SL4640 SL4840 SL5640 SL6640 Service Manual for that level of detail.

Source Validity: OEM vs Aftermarket Documentation

I’ve dealt with enough aftermarket parts catalogs to know they screw up part numbers and skip entire chapters. This one is published by GEHL Company, Revision E, dated 09/05. The introduction states clearly: “Use only genuine GEHL service parts.” That’s not a sales pitch – it means every part number here is traceable back to the factory. If you order a part using this manual, it will fit. There’s also a note on page 2 that “Items shown in the parts list that do not have part numbers are for reference only and NOT available for purchase.” That kind of honesty is rare in the aftermarket world.

Electrical – Chassis: Tracing Wiring Without Guessing

Electrical gremlins waste hours in any shop. The Electrical – Chassis chapter starting on page 157 gives you the exact part numbers for connectors, relays, and sensors. It won’t give you wiring diagrams – that’s in the service manual – but it will tell you which harness assembly to order. For the SL5640 with the two-speed option, the Drive Motors section on page 197 lists the specific motor variants. Pair this with the GEHL SL4640 SL4840 SL5640 SL6640 Engine Parts Manual if you’re rebuilding the powerplant.

For the SL6640 with the high-flow hydraulics, the High-Flow Valve section on page 231 shows every component from the cartridge to the O-rings. One wrong O-ring and you’ve got a puddle of hydraulic fluid. This manual prevents that.

Audience Fit: Who Benefits From This Manual?

If you own a GEHL skid-steer – SL4640, SL4840, SL5640, or SL6640 – and you plan to do your own parts ordering, this catalog saves you hours. Home garage enthusiasts who maintain their own equipment will find the exploded views helpful for understanding how assemblies go together. But be warned: this is not a repair guide. You won’t find step-by-step removal instructions. Pair it with a service manual for the full picture.

Read the Abbreviations Table First

Before you dive into the parts lists, flip to page 2 and study the abbreviations. “NILN,” “NPT,” “JIC” – know what you’re looking at. The manual uses these systematically. It also specifies that dimensions are in inches unless noted. No metric confusion.

Understanding basic diesel engine theory helps when you’re ordering engine parts. If you’re new to diesels, check out this Wikipedia article on diesel engines for fundamentals. For the bigger picture of automotive and equipment manufacturing standards, Automotive Industry Overview is a solid read.

3 Reasons to Choose OEM Documentation

First, you get the actual part numbers GEHL uses – no cross-referencing required. Second, the illustrations are accurate to the 2005 model year. Third, the manual tells you when a part is not available separately (reference items), so you don’t waste time ordering something that only comes in an assembly.

If you need an even more focused look at the engine internals, the GEHL SL4640 SL4840 SL5640 SL6640 2009 Parts Catalog covers later revisions. But for the 2005 models, this is the one.

Don’t trust a third-party reprint that lists parts from a different year. The factory document is the only one that matches the machine on your lot. Access the Factory Manual now and get the right parts the first time.

Can I use this manual for the SL5640 with a two-speed motor?

Yes. Section B covers both single and two-speed drive motors on page 197.

What if a part number is missing from the illustration?

Items without part numbers are reference-only and not available for purchase. You’ll need to buy the assembly or contact your GEHL dealer. The manual clearly notes this on page 2. For example, the main control valve on page 227 shows internal components – some are sold only as part of the valve stack. Cross-check with the service manual for disassembly guidance.