Description

O&K TB 111 1986 Parts Catalog – Factory OEM Part Number Reference

If you’ve ever ordered a part for an O&K TB 111 and got the wrong one because the aftermarket catalog listed something close but not exact, you know the frustration. This manual ends that. It’s the factory-issued parts catalog for the TB 111 loader, serial numbers 45-1011 and up, published February 1986. 231 pages of indexed illustrations, part numbers, and ordering instructions. No generic reprint.

That factory accuracy matters when you’re pulling a $400 hydraulic cylinder only to find the mounting ears are reversed. The manual part number is 4602577 – that’s what you need to match your order. Page 1 lists it. Page 3 gives you the five pieces of information you must include when ordering: machine model number, machine serial number, part number, part name, and quantity. Skip one and expect delays.

O&K TB 111 1986 Parts Catalog: 231 Pages of Factory Specs

Each page in this catalog shows an exploded view of an assembly followed by a table of part numbers, descriptions, and quantities. The index at the front lists every system – engine, transmission, axles, hydraulics, loader attachment. You find the system, flip to the page, and locate the part in the illustration. That’s it. No flipping through generic PDFs that mash three model years together.

How to Use the Index to Find Your Part

Open the manual to the index. It lists assemblies like “Engine – air cleaner” or “Transmission – shift linkage.” Find your assembly, note the page number. Turn to that page. The illustration has callout numbers that match the parts list column. Write down the part number. Done. If the part isn’t serviced separately (N.S.S.), the manual tells you. If it’s not illustrated (N.I.), it still lists the part number.

Serial Numbers Matter More Than You Think

O&K made changes to the TB 111 during production. The manual covers serial 45-1011 and up. If your machine is older, some parts won’t match. The manual says so on page 1. Always write down your machine serial number before ordering. That single piece of data avoids an entire return loop. I’ve seen guys order a fuel tank for a 45-1005 and wonder why the mounting holes don’t line up.

Abbreviations That Save You Returns

Three abbreviations you need to know: A.R. (As Required – no set quantity because it varies per machine), N.S.S. (Not Serviced Separately – you buy the whole assembly), N.I. (Not Illustrated – part is on the machine but not drawn). The manual explains these on page 3. If you see N.S.S., don’t try to order that individual bolt – order the carrier subassembly.

Why OEM Documentation Over Aftermarket Copies?

Aftermarket parts catalogs often combine multiple models into one book, omit supersessions, or use blurry scanned illustrations. This manual is a clean factory print from O&K (Trojan Industries Inc.). The part numbers are the ones the dealer will recognize. When you call a parts counter and give them the number from this manual, they won’t argue. That’s worth the price of admission right there. For context on why OEM specs matter in the Automotive Industry Overview, think about the liability of a wrong bolt in a steering knuckle.

Ordering Parts: The Five Pieces of Information Required

Page 3 lists exactly what you need: Machine Model Number (4500? TB 111? – write it exactly), Machine Serial Number, Part Number of the desired part, Part Name, Quantity. If you send that to your O&K dealer, you get the right part the first time. I’ve seen guys skip the serial number and get a part that was superseded three revisions ago. Don’t be that guy.

Use only parts authorized by Trojan Industries. The manual says it. That’s not a suggestion – it’s a safety and reliability requirement. Aftermarket parts may save a few dollars but can change the fit or material spec. On a loader, that’s a safety hazard.

For related manuals that follow the same factory OEM philosophy, check these:

• O&K L45, 4500Z 1990 Parts Catalog – Parts Manual TB126
• O&K L3000 Parts Catalog – Factory OEM Manual (236 Pages)
• O&K L2500 Parts Catalog – Factory Specs for Part Ordering

The same principle applies across heavy equipment: factory documentation eliminates guesswork. If you’re serious about keeping your TB 111 running without extended downtime, this is the reference. Access the Factory Manual now.

Is this a repair manual or a parts catalog?

It’s strictly a parts catalog. No repair procedures, no torque specs, no troubleshooting. If you need service instructions, you’ll want the separate shop manual.

Does this cover all TB 111 serial numbers?

No. It covers serial 45-1011 and up. Older machines may have different part numbers. Check your serial before ordering.

Can I use this to order parts for an O&K L45 loader?

The L45 is a different model. While some drivetrain components might overlap, this catalog is specific to the TB 111. Order the correct manual for your machine.

What if my PDF format is missing pages or unclear?

Contact our support with your order number. This is a verified factory scan – if something is off, we’ll replace it. We don’t sell reprints.

External resource for general automotive/equipment parts standards: Automotive Industry Overview