Eaton Char-Lynn 2006 Parts Catalog

I’ve been turning wrenches since before some of you were born, and I’ve seen what happens when a tech grabs an aftermarket parts list for a Char-Lynn steering unit. You get the wrong seal kit, the wrong spool, and a truck that won’t steer. This Eaton Char-Lynn 2006 Parts Catalog is the real deal – factory issued by Eaton, 98 pages of part numbers and exploded views that match exactly what came off the assembly line. None of that re-drawn garbage from a third party.

Get the Right Part Numbers – Avoid Costly Returns

This catalog is built around exact OEM part numbers for every component in Eaton Char-Lynn steering control units, torque generators, and steering columns. The table of contents kicks off with “Description and Technologies” on page 4, covering open center, closed center, and load-sensing hydraulic circuits. If you’ve ever ordered a “universal” seal kit that didn’t fit, you’ll appreciate having the genuine Eaton part callout. Page 22 starts the breakdown for the Series 5 steering control units – spools, sleeves, housings, all with factory numbers. Don’t waste time cross-referencing aftermarket catalogs that guess at the specs.

Hydraulic Circuit Explanation: Neutral and Work Circuits

Pages 6 through 11 lay out the neutral circuits – Open Center, Open Center Power Beyond, Closed Center, and Load Sensing (both static and dynamic signal). Then the work circuits: Non-Load Reaction and Load Reaction. If your equipment has intermittent steering response or drift, tracing the hydraulic circuit from these diagrams is faster than any guesswork. The catalog also covers steering units with integral valves on page 12. This isn’t a repair sequence, but it’s the map you need to identify which valve configuration is in your machine.

Special Features: 2 Speed, Dual Displacement, and Q-Amp

Starting page 13 the catalog dives into Special Features: Manual Steering, 2 Speed, Dual Displacement, Eaton patented Q-Amp (Flow Amplification), Wide Angle, Cylinder Damping, VersaSteer, and STC Direct Porting. Each feature gets a dedicated section with the specific part numbers for the components that make it work. For instance, the Dual Displacement section (page 15) lists the part numbers for the displacement spool and spring kit – critical if you’re converting a fixed-displacement steering unit to dual displacement for lower engine speed steering.

98 Pages of Factory-Sourced Part Data

All 98 pages come from the original Eaton document C-STOV-MC001-E1, published July 2006. The catalog references other Eaton technical bulletins and catalogs (like Technical Bulletin 3-401 and the Gear Pumps Series 26 catalog) – you know it’s the same document the OEM uses. The Steering Control Units and Torque Generators section starts with Series 5 (page 22) and Series 10 (page later in the PDF). Each series has its own exploded-view diagram with callouts keyed to a parts list. You get the porting configurations, shaft options, and mounting flange variations.

Source Authenticity: Why Factory Eaton Documentation Beats Aftermarket

I’ve been burned by aftermarket parts catalogs that re-number parts or leave out revisions. This catalog is the actual factory scan – not a reprint, not a third-party compilation. Eaton’s own engineering team wrote the part numbers. When you look up a spool for a Series 5 unit, the number matches the one stamped on the factory part. If you’re working on a truck that uses the Eaton RTLO-16618A transmission, you’ll want that same level of accuracy – see the Eaton RTLO-16618A 2010 Parts Catalog – Factory Breakdown for Truck Shops for parallel documentation. For older Eaton transmissions, the Eaton RT-8908LL 2006 Parts Catalog – Factory PDF Manual is equally reliable. And if you need a newer manual for the RTXF series, the Eaton RTXF 2011 Parts Catalog – Factory Parts Breakdown follows the same factory format.

For a broader context on how these steering systems integrate with vehicle powertrains, the Automotive Industry Overview is a solid resource. And to understand the engine-side power takeoff that drives the steering pump, check Internal Combustion Engine.

Audience Fit: Who Needs This Catalog

If you’re a shop owner, fleet mechanic, or serious DIYer who maintains equipment with Eaton Char-Lynn steering – forklifts, skid steers, agricultural tractors, or heavy trucks – this catalog belongs in your digital library. It’s not a service manual, but without it you’re ordering parts blind. I’ve had to bench-bleed a steering unit three times because the parts counter sold me the wrong o-ring. This catalog prevents that.

Final word: If you work on these steering units, stop guessing on parts. Get the factory source. Download the Factory Manual now and have the exact part numbers Eaton intended.

Frequently Asked Questions

Does this catalog include torque specifications for steering unit bolts?

No, torque specs are not included; it is for part identification only.

Can I use this catalog to rebuild a Char-Lynn steering unit?

You can use it to identify every internal part with factory part numbers, which is critical for ordering correct seals, spools, and housings. But a rebuild requires a separate service manual with assembly steps and clearances. Many techs assume the parts catalog has enough detail – it doesn’t. You need both documents. This catalog gives you the exploded diagrams and part callouts. The service manual gives you the torque sequence, wear limits, and hydraulic test specs. I’ve seen guys ruin a brand-new steering unit because they used an aftermarket parts list and got the wrong o-ring. Don’t be that guy.

Is this the same document Eaton originally published in 2006?

Yes, this is a direct scan of the Eaton factory catalog C-STOV-MC001-E1 published July 2006. It’s the original OEM document, not a reprint or third-party interpretation.

Does the catalog cover the Series 5 and Series 10 steering control units?

Yes, both Series 5 and Series 10 are covered with full part number listings and exploded views.