Description

Dana Spicer CM50, T210-CM50, 5052-A, 5052-B, 5052-C 1980 Parts Catalog

You’ve got a CM50 on the bench. Maybe it’s a T210-CM50. Maybe one of the 5052 variants. Without the right part numbers, you’re guessing which gears, bearings, or yokes go back in. That costs time and money. This 54-page OEM parts catalog from Dana Spicer, published in 1980, gives you the factory breakdown so you order the exact piece the first time. No aftermarket sketchiness. No reprints. Original factory data.

Gears and Related Parts: Mainshaft and Countershaft

Pages 4 through 7 lay out the mainshaft and countershaft assemblies. You get exploded views with call-outs for every gear, spline, and spacer. Need to know which drive gear matches your ratio? The Drive Gear Table on page 8 cross-references tooth counts to model numbers. I’ve seen guys bolt in a wrong gear because they guessed from a generic diagram. Don’t be that guy. This catalog tells you exactly which part fits the CM50 or 5052-C.

Flanges and yokes live on page 9. The catalog lists component flanges, flange yokes, and end yokes with dimensions. If you’re swapping a transmission into a different chassis, you need the yoke bore size and spline count. Page 9 has it. Measure twice, order once.

Front Bearing Cap Chart with Clutch Applications – What It Tells You

Clutch housing dimensions are on page 16. The front bearing cap chart on page 14 includes clutch applications. That means you can match the cap to the clutch release mechanism without tearing everything apart twice. The Release Port Dimensions on page 26 and the Release Code Table on page 27 give you the exact specs for the hydraulic or mechanical release. If you’re rebuilding a T210-CM50 for a truck that hauls heavy, this saves a second teardown.

Remote Control Assemblies: High Rod and Two Lever Types

Pages 20 through 22 cover remote control setups. High rod type for cable or rod control, and two lever type. These sections show the bracket, rod ends, and lever part numbers. If your installation uses a remote shifter, you need these pages. I’ve watched DIY guys spend hours fabricating brackets because they didn’t have the OEM part number. The catalog lists them. Use it.

Tabulated Bills of Material – Discontinued vs Current Production

Pages 28 to 35 list discontinued parts. Pages 36 to 49 list current production parts as of 1980. Why does this matter? Because if a part is discontinued, you need to know what supersedes it. The catalog’s note on page 1 warns that some parts may no longer be available and directs you to the Transmission Superseding List. That list isn’t in this catalog, but knowing the original part number lets you cross-reference with Automotive Industry Overview databases or call Dana Spicer directly. Also check the Basic Overhaul Parts Kits on page 52 – those kits bundle seals and gaskets for a full rebuild. For related models, see Dana Spicer ES42-5 1990 Parts Catalog – OEM Factory Specs, Dana Spicer T20000 2005 Parts Catalog – OEM Factory Specs, and Dana Spicer T210 CM55 1991 Parts Catalog – OEM Factory Specs.

One more thing: the sectional view on page 17 (also inside the back cover) has part name call-outs. This is your quick reference when you’re holding a shaft and need to name it. Hang that page on your wall.

This catalog covers models 5052-A, 5052-B, 5052-C, and the CM55 replacement transmissions pages 50-51. So if you’re working on a CM55 replacement, the data is here too.

Does This Catalog Include Torque Specs?

No. This is a parts catalog, not a service manual. It lists part numbers, dimensions, and identification charts. You won’t find torque values or assembly instructions. For that you need the corresponding service manual. But the parts catalog is what you use before you order anything. Pair it with the factory service manual and you’re covered. For engine background, Internal Combustion Engine.

Who Should Buy This?

Any DIY mechanic or small shop rebuilding a Dana Spicer CM50, T210-CM50, or 5052-series transmission. If you own a medium-duty truck, farm equipment, or industrial machinery with one of these boxes, this catalog saves you from ordering blind. It’s 54 pages, direct from the OEM, no aftermarket assumptions.

Do I need a separate service manual for this transmission?

Yes. The parts catalog gives you part numbers and exploded views. The service manual gives you assembly steps and torque specs. Get both.

What if a part number in this catalog is now discontinued?

Page 1 warns you. Write down the original Dana Spicer part number and call your dealer. They can look up the supersession. That’s why having the OEM number is critical – aftermarket catalogs often skip supersession data.

Access the Factory Manual now and stop ordering wrong parts for your Dana Spicer CM50.