Description

O&K RH1.40SR, RH1.45SR 2004 Parts Catalog

Let me tell you something about parts catalogs. I’ve been wrenching since before torque wrenches had click adjustments, and I’ve seen what happens when a guy orders the wrong hydraulic seal because he used an aftermarket cross-reference. On an O&K excavator, that mistake costs you a day and a grand. This O&K RH1.40SR, RH1.45SR 2004 Parts Catalog is the only document that matters when you need to order a replacement part for these two models. Not a third-party CD with fuzzy diagrams. Not a PDF copied from a copy. Original OEM print from 2004, 676 pages, and it includes the full text in seven languages: English, French, German, Italian, Spanish, Portuguese, and Dutch. That means if your crew speaks different languages, everyone can read the same ordering rules without translation errors.

The manual starts on page 3 with the instructions for ordering spare parts. Page 4 gives you the ordering rules – the exact format O&K expects when you call your dealer. Ignore those rules and your order gets bounced. Page 22 lists every abbreviation used in the catalog. Page 23 has a conversion chart from inches to millimeters. If you’re rebuilding a track tensioner, you need that chart because O&K specs are often in inches, and your micrometer reads metric. I’ve had apprentices snap bolts because they guessed the conversion. Don’t guess.

Instructions for Ordering Spare Parts (Page 3)

Page 3 lays out the procedure step-by-step. You need the machine serial number, the part reference number from the exploded view, and the quantity. No shortcuts. If you skip the serial number check, you might order a part that fits the RH1.40SR but not the RH1.45SR. They look similar; the parts are not always interchangeable. The manual tells you exactly where to find the identification tag – pages 25-27 cover that. I’ve seen a guy order a main hydraulic pump based on a chassis plate alone, and it was the wrong pump because the model suffix was off. This catalog prevents that.

Ordering Rules – Why They Matter

Page 4 of this Parts Catalog details the ordering rules. O&K wants the part number, description, quantity, and delivery address in a specific order. If you send an email with the description first, some dealers will reject it. I know because I’ve had it happen. The manual also states that single-item numeration – the method used in this catalog – cannot be reproduced without written consent from O&K. That’s a legal note, but it also means the numbers are proprietary. Cross-reference lists from off-brand suppliers may map to the wrong item. Stick to the factory numbers here.

Conversion Chart Inch-MM (Page 23) and Identification List (Pages 25-27)

Page 23 gives you a conversion chart from inches to millimeters. Page 25-27 shows the identification and version list for both RH1.40SR and RH1.45SR. You need both. The identification list tells you which components changed between production years. For example, the undercarriage parts might differ if your machine was built before or after a certain serial number break. Write down your machine’s serial number before you open this catalog. Then cross-reference it against the version list on page 26. I’ve had guys skip this step and end up with a final drive motor that had the wrong flange bolt pattern. You can’t return a hydraulic motor once it’s been unpacked and tested – most dealers won’t take it. Save yourself the headache.

Maintenance Parts and Number Index (Pages 29-31 and Page 33)

Pages 29-31 list the maintenance parts – filters, belts, seals, and scheduled replacement items. Page 33 is the numerical index. If you have a part number from an old order or a worn tag, look it up in the number index first. It gives you the page and figure reference for the exploded diagram. Then you can verify the exact part you need. I’ve used this index to find a discontinued hydraulic line that had a supersession – the index pointed me to the replacement number. Without the catalog, I’d have been stuck ordering from a salvage yard and hoping.

For related manuals, check the O&K L45, 4500Z 1990 Parts Catalog – Parts Manual TB126 if you work on older O&K models, or the O&K L3000 Parts Catalog – Factory OEM Manual (236 Pages) for the L3000 series. There’s also the O&K L2500 Parts Catalog – Factory Specs for Part Ordering for that model line.

Why Factory OEM? Because Aftermarket Catalogs Lie

I’ve seen aftermarket parts catalogs that list a seal that’s close but not exact. That seal leaks under full hydraulic pressure. Then you bleed down the system, pull the cylinder, replace the seal again, and lose half a day. O&K wrote this catalog. They know the tolerances. The thread pitch for a banjo bolt on the RH1.45SR fuel line is specific – a generic catalog won’t tell you that it’s different from the RH1.40SR. Page 22 lists all abbreviations; page 23 gives you the exact conversion. This is the source. If you want to understand why the Automotive Industry Overview relies on OEM documentation, think about liability. A wrong part on a 40-ton excavator can kill someone. O&K’s catalog reduces that risk. The same applies to Automotive Industry Overview principles – you trust the factory spec.

Q: Can I use this Parts Catalog to rebuild the engine on my RH1.40SR?

A: This is a parts catalog, not a service manual. It lists every part with exploded diagrams and part numbers, but it doesn’t include disassembly or torque specs. You need the service repair manual for rebuild instructions.

Q: Does it cover both RH1.40SR and RH1.45SR?

A: Yes. The cover and first page list both models. The version list on pages 25-27 identifies which parts are specific to each model based on serial number breaks.

Q: I have a 2005 machine – will this 2004 catalog still be accurate?

O&K updated parts during production. This 1st edition from July 2004 covers the machines built up to that date. For later changes, you’d need the next edition or check with a dealer using your serial number. But for 2004 and earlier units, it’s correct.

Q: What language is the manual in?

It includes English, French, German, Italian, Spanish, Portuguese, and Dutch. Each section is separate with full page numbering. The ordering rules and notes are repeated in each language so you can hand the page to a mechanic who reads only Spanish, for example.

If you’re ordering parts for an O&K RH1.40SR or RH1.45SR, this is your reference. 676 pages, factory-verified part numbers, conversion charts, and a numerical index that finds any part in seconds. Don’t rely on aftermarket guesses. Access the Factory Manual now and keep it in your shop computer or tablet. You’ll use it every time a seal blows or a track needs replacing.