Description

GEHL AL20DX, AL200 Parts Catalog

You are rebuilding an AL20DX loader and need a steering cylinder seal kit. You grab a generic parts list from some website, order the seal, and it’s the wrong size. Now the machine sits, customer is calling, and you’re out the shipping cost. That’s why you buy the factory GEHL AL20DX, AL200 Parts Catalog. 28 pages of OEM part numbers, not guesses. I’ve been turning wrenches in San Antonio for 28 years, and I’ve seen more misordered parts than I’ve seen 10mm sockets disappear. This catalog stops that. It’s a parts manual, not a service manual – but if you don’t have the right part number, you can’t fix it anyway. Torque specs? They’re on the inside back cover. You need standard hardware torque values for Grade 5 cap screws? They’re there. Don’t trust aftermarket torque charts. Use the OEM data.

GEHL AL20DX, AL200 Parts Catalog – What’s Inside

This 28-page document starts with an introduction telling you how to order parts: specify part number, description, quantity, model and serial number. The serial number tag is behind the right front wheel. That detail alone saves you a call to the dealer. Then you get an Alphabetical Index and a Numerical Index – page 1 lists them. If you know the part name or the old number, you can find the new number. No flipping through 50 pages manually. Then the real meat: exploded view parts diagrams for every major assembly. Decal Locations (pages 2-3), Extendable Boom (page 4), Standard Boom (page 5), Front Chassis (pages 6-7), Rear Chassis (pages 8-9). Each diagram has reference numbers that correspond to a parts list with descriptions, quantities, and OEM numbers.

Torque Specifications: Inside Back Cover

Standard attaching hardware torque values are provided on the inside back cover. That’s page 28. Want to know the torque for a 1/2-inch Grade 5 cap screw? It’s in there. Do not use generic internet values – they vary by thread pitch, plating, and grade. This catalog lists the values that GEHL engineered into the machine. I have had to re-torque boom pivot bolts that were stripped by a previous tech who guessed. If the manual says 70 lb-ft, you run it to 70 lb-ft, not 65 because your arm felt tight. Use a calibrated torque wrench. The torque specs are also repeated in the section for each assembly where applicable.

Decal Locations – Pages 2-3 – Don’t Skip Them

Decals might seem unimportant until you need to know where a warning label goes for an inspection. Or you replace a hose and want to confirm the correct routing decal. The Decal Location section shows exactly which decal goes where on the machine, using the same reference number system. If you are sourcing a replacement decal, you get the part number directly. No guessing. This section also confirms right- and left-hand orientation from the operator’s seat. That matters when ordering mirror decals or control panel graphics.

Alphabetical and Numerical Index – How to Find Parts Fast

Two indexes in a 28-page manual might seem redundant. They are not. The Alphabetical Index lists part names in alphabetical order – “Bolt, Cap Screw,” “Cylinder, Steering,” “Filter, Hydraulic.” The Numerical Index lists all part numbers in numeric order. If you have a part number from the old catalog or from a cross-reference, you can find the new number and the diagram page. This is the fastest way to navigate on a phone or printed copy. I keep a printed version in the toolbox and the PDF on my tablet. GEHL AL20DX Parts Catalog and GEHL SL4640, SL4840, SL5640, SL6640 2005 Parts Catalog use similar indexing – once you learn one, you learn them all.

Extendable Boom vs Standard Boom – Parts Diagrams

Page 4 covers the Extendable Boom assembly, page 5 the Standard Boom. If you have an AL200 with the optional extendable boom, the diagram shows the extra components – the extension cylinder, wear pads, pins. The parts list calls out different bolt grades and lengths. The cap screws on boom sections are typically Grade 5, but the pivot pins may be retained with special lock nuts. The torque values on the inside back cover apply to the hardware, but the diagram also indicates special fasteners that may have their own torque requirements listed in the service manual (not included here). Use this catalog to order the correct pivot pin – they are not interchangeable between standard and extendable booms.

Front and Rear Chassis Breakdown – Pages 6-9

The front chassis pages cover the loader arms, linkage, steering cylinders, and front axle mounting. Rear chassis covers the engine mount, transmission, cooling package, and counterweight. If you need a hose for the steering cylinder, the diagram shows the hose routing and the correct fitting part numbers. The parts list includes O-rings and seal kits. GEHL SL7610, SL7710, SL7810 2005 Parts Catalog – OEM Factory Specs uses the same layout – exploded view on left, part list on right. After you’ve used one GEHL parts catalog, you can pick up any of them and navigate blindfolded. That’s factory design consistency.

Why OEM Parts Catalog Over Aftermarket?

Aftermarket parts vendors often list “replaces OEM #12345” but they may use a cross-reference that is close but not exact. I’ve seen aftermarket manuals that list a bolt as Grade 5 when the factory called for Grade 8. With this catalog, you see the OEM part number, the exact description (e.g., “Cap Screw, Hex Head, 5/8-11 x 4.00, Grade 5, Zinc”), and the quantity. You then order that genuine GEHL part or match it precisely from a reputable supplier. The catalog also includes notes about tire replacements – for example, company policy prohibits sale of replacement tires, but they sell wheel sets and call out tire size information. That kind of detail only comes from the factory. For those who want to understand the diesel engine theory behind the loader, see this Wikipedia article on diesel engines. For a deeper dive into how diesel engines work, this Wikipedia article on diesel engines provides the background.

Does this catalog include service procedures like timing belt replacement?

No. This is a Parts Catalog only. It contains exploded diagrams, part numbers, and torque specifications. You need the separate Service Manual for repair procedures.

How many pages are in the AL20DX and AL200 Parts Catalog?

28 pages total. That includes covers, indexes, decal locations, boom and chassis diagrams, and torque specs on the inside back cover.

Are torque values listed for every fastener in the machine?

The inside back cover provides standard hardware torque values for Grade 5 and Grade 8 cap screws and nuts. Some specific assemblies may reference unique torque values in their parts lists, but for general fasteners you use the chart. For critical fasteners like axle bolts, consult the Service Manual.

What if my AL200 serial number is outside the range covered?

This catalog replaces form number 908036 and covers AL20DX and AL200 models through the publication date. If your serial number is newer, compare the diagrams to your machine. GEHL may have updated parts after this catalog was printed. Contact a dealer with your serial number for the latest revision.

That covers what this catalog does and does not do. It saves you time by giving you the correct part number the first time. It saves you money by preventing returns and reorders. And it keeps your machine safe because you use the right fasteners with the right torque. If you work on GEHL loaders – or any equipment that uses bolts and parts – you need the factory numbers. Access the Factory Manual and put it on your phone, tablet, or print a copy for the toolbox. You will reference it on every job.