Description

O&K 5500 Parts Catalog

I’ve seen more than my share of parts orders go sideways because someone tried to match a part by eye or used an aftermarket reference. You end up with the wrong seal, a bracket that doesn’t line up, and a machine down for an extra week. That’s why O&K 5500 Parts Catalog – the factory OEM document – belongs on every loader owner’s bench. It’s the same set of pages the dealer uses to pull part numbers. 337 pages, printed from the original Trojan Industries Inc. files, not a rehash. This thing has been around since September 1984 and it still beats any third-party compilation I’ve seen.

Flipping through this catalog, you get exploded views and a table of contents that points you straight to the system you need. It covers the Model 5500 with Manual TB093 (Part No. 2023051, Revision 11). That means every page matches the factory drawings from when these machines were built. The index lists Accelerator Pedal & Linkage for both GM and CD engines, Air Cleaner variants, the whole accessory control panel – right down to the wiring. If you’re a home-garage mechanic or run a small shop maintaining a single loader, this is your insurance against buying the wrong part and burning money

Accelerator Pedal & Linkage: Two Engine Variants (GM and CD)

The catalog separates the GM and CD engine versions on pages 34-35 and 42-43 respectively. That doesn’t sound like a big deal until you order a linkage rod for the CD engine and you own a GM. The drawings show each bracket, spring, and pin with its part number. No guesswork – you look at the illustration, match the callout, and write down the number. The manual tells you the exact quantity needed and whether the part is serviced as an assembly (N.S.S.) or not (N.S.S.). For a guy who has torqued more head bolts than he’s had hot meals, that level of specificity is what keeps a machine running.

Why Use a Factory Parts Catalog Instead of Aftermarket?

Aftermarket parts catalogs often group components by generic categories, missing the subtle differences between revisions. This OEM document was printed by Trojan Industries – the manufacturer – and includes a serial-number range check on page 2. You fill in the machine serial number, engine model, transmission part number, and axle part numbers. That single page ensures you’re ordering against your specific build. Aftermarket sources skip that step. I’ve watched guys order a water pump that looked like the picture only to find the bolt pattern was one inch off because their machine was built in ’86 and the aftermarket catalog used ’87 data. Not here.

7 Systems Covered: From Air Intake to Wiring

Pick any major system and the index gets you there. Air Intake (GM) page 44-45, Air Intake (CD) page 46-47, complete with hose clamps and duct part numbers. The Battery & Wiring section (pages 56-58A) covers the main harness routing and battery tray components. The Wiring section itself – from the Accessory Panel Wiring (pages 150-151) – shows the connector positions, wire colors, and terminal part numbers. If you’re chasing an electrical gremlin, having the factory wiring breakdown saves you hours of tracing with a multimeter. The same goes for hydraulic piping, brake controls, and the automatic lubrication system (pages 164-166). Seven major sections is a conservative count; the catalog actually covers every bolted-on assembly on the 5500.

Get the Right Part Number the First Time

When you open this catalog, you’ll see two columns: the illustration and the parts list. The list gives the part number, name, and quantity. For example, look up the Bucket Assembly (page 146-147) – you’ll see the cutting edge, teeth, weld-on plates, and hinge pins with their individual numbers. Ordering by that number instead of saying “I need a bucket pin for an O&K 5500” ensures the dealer ships you the right diameter. The manual even includes warnings about “As Required” (AR) items – parts where the quantity varies by machine configuration. That’s the kind of detail a factory manufacturer puts in because they know the machine, not because they scanned a spec sheet.

Wiring: Tracing Components on the Accessory Panel

Pages 150-151 cover the Accessory Panel Wiring – the terminal strip layout, fuse blocks, and the wiring to the boom and bucket solenoids. If you’ve ever had a loader that would only lift the boom and not curl the bucket, you’ll appreciate having the factory diagram to isolate which wire runs to which valve. The catalog also includes the Connector, Watertight (pages 144-145) and the Automatic Hoist Cut-Out (pages 60-61). These aren’t generic diagrams; they’re the exact schematics used on the production line. Use them to trace a broken wire or identify a corroded terminal without cutting into the harness blind.

Frequently Asked Questions

Will this parts catalog work for a 5500 loader built after 1985?

It covers up to the revision date (September 1984) and includes serial-number tracking. If your machine is newer, check the serial number against the range listed on page 2. Many later 5500 loaders share the same part numbers, but Trojan Industries made running changes. For ’85 and later builds, consider the companion O&K 5500 Parts Catalog – Factory OEM Parts Manual TB114 (209 Pages) which covers later revisions.

Does this manual include torque values for assembly?

No. This is a parts catalog, not a service manual. Torque specs are in the service manual for the 5500. Use O&K 5500 Parts Catalog for parts identification and a separate service manual for torque data.

If you’re tired of wasting time on wrong parts and waiting for return shipments, get the factory source. Access the Factory Manual and keep your 5500 loader producing. Pair it with the O&K L45, 4500Z 1990 Parts Catalog – Parts Manual TB126 if you work on other Trojan models. For more on equipment documentation standards, see this Automotive Industry Overview.