Description

Case 26, 26B, 26S 1975 Parts Catalog

If you’ve ever ordered a part for a Case backhoe and got the wrong one because some aftermarket catalog had a fuzzy drawing and no serial number reference, you know the pain. This Case 26, 26B, 26S 1975 Parts Catalog is the factory original – G1109. 256 pages of exploded views, part numbers, quantities, and the exact instructions for ordering. None of that third-party reprint garbage where they scan a page and call it good. This is the actual document the Case dealer used. You want the right seal for the track roller? You look it up here, not on some forum.

Let’s be clear: a parts catalog isn’t a service manual. It won’t tell you how to rebuild the swing cylinder. But without it, you’re playing roulette with part numbers. The 26, 26B, and 26S backhoes were mounted on 480CK wheel tractors and 310G, 350, and 450 crawlers. Different mounts, different hydraulic lines, different wear parts. This catalog covers all three models from the factory. You get the exploded view, the part number, the quantity used, and the machining item code. No guesswork.

Indexes: Alphabetical and Numerical Navigation

The front of this catalog has an Alphabetical Index that lists major groups and assemblies. The rear holds a Numerical Index with part numbers and the page you’ll find them on. You want the backhoe swing cylinder? Look it up alphabetically, or find the part number in the numerical index if you already have one. This saves you flipping through 256 pages blind. The 1975 edition replaced previous issue F1109 – so if you’re still using that, throw it away. Parts change. The catalog tells you which revision supersedes what.

Orders: What You Must Include to Get the Right Part

Every order requires: correct part number, full description, quantity, machine model and engine model, machine and engine serial numbers, method of shipment, and shipping address. Miss the serial number and you’ll get the wrong bracket. Case had running changes. The manual spells it out on page 3. I’ve seen guys order a spool valve for a 26B without the serial number and end up with a 26S valve that doesn’t fit. Waste of time.

Illustrations: Exploded Views That Show What You’re Actually Ordering

Every assembly is shown in exploded-view style. Circled numbers correspond to the REF. column in the parts list. You see exactly how the parts go together. The illustration shows the relationship – so you know that nut (131-737) goes on the track roller before the washer (R29429). No assembly instructions, but the picture tells you if you’re ordering the right stack. The catalog uses indentation to show sub-assemblies. For example, a track roller assembly includes two nuts, two washers, two seal blocks, two O-rings, and two face seal assemblies. Line items indented under the main part are part of that assembly. You order the whole thing or individual pieces. That’s how you don’t end up with a box of loose bolts you can’t use.

Changes: Keep the Catalog Updated or Waste Money

Case issued revised pages to this catalog. When you get them, you insert them. The manual says: “Failure to keep your catalog up to date will result in confusion and may cause you to order wrong parts.” That’s not CYA talk. It’s fact. The moment you skip a revision, you risk ordering a part that was superseded. The catalog even tells you which pages to discard from the previous issue. Don’t ignore it.

Description, Quantity, and Machinery Items: Reading the Parts List

Each line gives you: REF number (if any), PART NO., DESCRIPTION, REQ’D (quantity), and MACH. ITEM if applicable. Machinery items (like a mounting frame) must be ordered from the Machinery Price List, not by part number. The example on page 3 shows a track roller assembly with six pieces. Underneath indented are the individual components. Notice that the face seal is further broken down into body, repair kit, rubber seal, and plastic retainer. If you need just the rubber seal, you order that, not the whole face seal assembly. This level of detail is what you get from OEM documentation. Aftermarket catalogs collapse all that into one number – good luck getting the right seal if you need one.

Right-Hand and Left-Hand Sides: Orientation Matters

Stand at the rear of the machine and face forward. That determines left and right. If you’re ordering a hydraulic hose for a 26S backhoe, get the side wrong and you’ll be rerouting it past the exhaust. The catalog uses R.H. and L.H. consistently. Don’t guess – use the reference.

Related Manuals Worth Owning

• Case 26 Backhoe Operators Manual – know how to run it.
• Case 26 & 26B Loader Parts Catalog E1124 – if you have the loader attachment.
• Case Model 26 Loader and Backhoe Operators Manual – combined operation guide.

For broader context on the automotive and equipment industry, check the Automotive Industry Overview and Automotive Industry Overview.

Is this the same as the service manual?

No. This is a parts catalog. It lists part numbers, quantities, and exploded views for ordering. It does not contain repair procedures or torque specs.

Can I use this to rebuild my backhoe bucket cylinder?

No. You need the Service Manual for disassembly and assembly torque procedures. But you will need this parts catalog to order the correct seals and O-rings. Both manuals are required for any teardown. The parts catalog tells you the part numbers; the service manual tells you how to put it together. Without both, you’ll either order wrong parts or install them incorrectly.

Don’t waste time with aftermarket reprints that give you blurry scans and missing pages. This is the original 1975 Case Parts Catalog, 256 pages, printed in the U.S.A. in December 1975. If you work on a 26, 26B, or 26S backhoe, you need this on your bench. Access the Factory Manual now.