Description

Yale MO20 Parts Catalog – Factory OEM Part Numbers & Exploded Views

If you’re trying to order parts for a Yale MO20 lift truck and you’re getting cross-eyed from aftermarket cross-reference charts, you’re not alone. I’ve seen guys waste a full shift chasing wrong numbers. That’s why you need the real deal – the factory Yale MO20 Parts Catalog. This is the parts manual, 70 pages of exploded diagrams and OEM part numbers. Not some third-party reprint that guesses at dimensions. This is the original document Yale shipped with the truck. The PDF is multilingual – English, Italian, French, German, Spanish – so if you’re working in a shop that handles imports, you won’t get tripped up by language. Page 2 lays out the entire figure index: Fork carriage, Frame-Foot board, Support and wheel, Drawbar control box, Steering column, Traction unit, Traction motor, Hydraulic system, Lifting cylinder, Adhesive labels, Battery trucks, Hydraulic diagram, Power cables diagram, Sheath diagram, Electronic diagram, Connectors and tools, and Console adapter. That’s everything from the mast down to the electronic control box. No guesswork.

Fork Carriage and Frame Assembly – Real Part Numbers

FIG.1 covers the fork carriage – the whole assembly that carries the forks and the load. You get the exact Yale part numbers for the carriage, load backrest, fork stops, and pins. FIG.2 is the frame and foot board. If you’ve got damage under the battery compartment or cracks in the foot plate, you need those numbers. I’ve had mechanics try to weld up a busted frame using aftermarket steel plate, only to find it doesn’t fit the bolt pattern. The factory drawing tells you exactly which bracket goes where. No measuring, no mickey-mouse.

Hydraulic System and Lifting Cylinder – Get the Right Seals

FIG.8 shows the entire hydraulic system – pump, manifold, hoses, and control valve. FIG.9 is the lifting cylinder. Leaking seals on an MO20? You need the correct O-ring and seal kit. This catalog gives you the part number for the cylinder kit, not a generic cross-reference. Saves you a call to Yale parts support and a half-day wait. Page 2 tells you how to use the handbook: each figure has item numbers that lead you to the part number list in the back. Straightforward, once you stop guessing.

Traction Unit and Motor – Electric and Mechanical Parts

FIG.6 breaks down the traction unit – gears, bearings, drive axle, and differential if equipped. FIG.7 is the traction motor itself. If your MO20 isn’t moving or makes grinding noises, you need the motor parts breakdown. The catalog includes the YY winding numbers and brush holder assemblies. You won’t find those stamped on the housing after twenty years of grime. Having the OEM part number means you order the correct armature from Yale, not some rebuild shop that says “this should fit.” Should doesn’t cut it in a working shop.

Electrical Diagrams – Power Cables and Electronics

FIG.13 is the power cables diagram – big honking cables from the battery to the controller. FIG.14 is the sheath diagram (think of it as the wire harness routing). FIG.15 is the electronic diagram – control board, mosfets, and sensors. If you’re chasing an intermittent fault on an MO20, you need to see how the factory wired it. Aftermarket wiring diagrams often miss the ground paths. This catalog shows the actual connector pinouts and wire colors. FIG.16 covers connectors, contacts, and tools – even the special tools you need to crimp the terminals. You might not think a parts catalog helps with diagnostics, but it does – when you can identify the exact sensor part number, you stop swapping parts.

3 Reasons to Choose OEM Documentation Over Aftermarket

First, aftermarket catalogs often reuse old drawings with wrong dimension callouts. I’ve seen a fork carriage listed with the wrong pin diameter – that’s a safety hazard. Second, OEM part numbers change over the production run; a factory catalog includes supersession notes. Third, the MO20 is built by Yale, so only their catalog has the legitimate warranty and compliance information. If you ever need to order a safety-critical part like a lifting cylinder or a steering column (FIG.5), you want the number that matches your truck’s serial T2500027 or T2500054. Page 2 shows how to match your truck model.

That’s why you see this catalog listed alongside other Yale production manuals like Yale OS 030 BC SS 030 BC 1997 Parts Catalog OEM and Yale MP, MPB 040 AC 1997 Parts Catalog Factory OEM. For older Eaton-Yale trucks, Eaton Yale & Towne 1700 1969 Service Manual – OEM Factory Data covers the service side. Get familiar with how OEM documentation works in the Automotive Industry Overview and Automotive Industry Overview – it’s about consistency and liability. Aftermarket catalogs don’t carry that weight.

Frequently Asked Questions

Does this manual include repair procedures or just parts?

It’s a parts catalog. You get exploded views, item numbers, and OEM part numbers. No step-by-step repair instructions. For repair procedures, you need the service manual.

Is this OEM or a reprint?

Factory OEM. This is the original PDF from Yale. No reprints, no photocopies, no scans of a scan. The watermark and page layout match the dealer release.

What years and serial numbers does it cover?

The catalog references truck models with serial prefixes T2500027 and T2500054 for the CE MO20. It covers production runs through the time of publication. If your MO20 serial falls outside those, verify with a dealer – but the part numbers are likely the same for earlier/later builds with minor variations noted in the parts list.

Can I use this to order parts online?

Yes. The part numbers are the same numbers you enter into Yale’s online system or give your parts supplier. Just match the item number from the figure to the table. That’s it. No cross-referencing.

Look, I’ve been turning wrenches for 28 years. I’ve seen too many jobs go sideways because someone ordered a part off an aftermarket number that turned out to be the wrong casting. The Yale MO20 Parts Catalog is 70 pages of factory-correct data. If you want to keep that lift truck running without ordering three different cylinders to find the right one, get this catalog. Access the Factory Manual before you order another part.