Description

Dana Spicer 1541, R805, 7031, 8341 1974 Parts Catalog

If you’ve ever tried tracking down a replacement output shaft or shift fork for a top-mounted PTO and ended up with a part that doesn’t match the spline count or bearing cup, you already know the frustration. Aftermarket sources mix part numbers, skip supersessions, and leave you wasting time on returns. This Dana Spicer 1541, R805, 7031, 8341 1974 Parts Catalog is the original factory print – 17 pages of nothing but verified part numbers, exploded views, and the exact case bearing cage configurations used on the assembly line. No reprints, no guesswork.

Gears and Related Parts: Cup & Cone Style (Page 2)

Page 2 breaks down the output shaft and gear assembly for the cup and cone bearing style. You get reference numbers like Y-1 through W-19, with part numbers such as 70-362-15 for the output shaft and 70-8-31 for the 30T drive gear. Each model – 1541, R805, 7031, 8341 – has its own column showing quantity per assembly. Need the output sliding gear? Part 70-37-22 (32T) is listed alongside the sleeve and lockwire specs. The table also includes the tapered roller bearing cups (550449) and cones (550446), so you can order exactly what fits.

Does This Catalog Cover the 1541 and R805 Models?

Yes – and the 7031 and 8341 as well. The basic assembly table on page 2 lists all four models side by side. For example, the 1541 auxiliary uses assembly number 313032X, while the 8341 uses 313044X. Every subsequent parts column is keyed to those assemblies. If you’re working on an R8031 or 7603 auxiliary, those are also referenced in the same block. This catalog doesn’t treat them as generic; each model gets its own parts count.

17 Pages of Factory Part Numbers

Seventeen pages. That’s the entire scope – no fluff, no filler. The Dana Spicer engineers condensed everything you need into a compact reference. Inside you’ll find the gear sets, case bearing cages, shifting parts, companion flanges, flange yokes, and bearing kits. The cup and cone style is covered on pages 2-5, with cylindrical and tapered roller styles on pages 8-13. Page 14 holds the superseding list – critical for identifying obsolete part numbers. Page 15 covers companion flanges and yokes, and page 16 lists the bearing kits. That’s 17 pages of direct-from-1974 data.

Understand the Superseding List Before Ordering

Page 14 is where you check before you buy. The superseding list shows which older part numbers have been replaced by newer ones. For example, if a shift rod bushing was updated, you’ll see the cross-reference here. Skipping that step is how you end up with a part that looks right but won’t engage. The catalog uses the T210-59 revision dated May 1974, superseding a November 1973 version. That means any part number changes between those dates are captured. Don’t rely on aftermarket lists – use the factory supersession data.

Bearing Kits: What’s Included on Page 16

Bearing kits on page 16 bundle the cup, cone, and any required spacers or washers for each style. The cup and cone style uses tapered roller bearings (W-14 and W-15 on the output shaft). The cylindrical and tapered roller styles have their own kit numbers. If you’re rebuilding a 1541 top-mounted PTO, you can order the bearing kit by the reference number from the parts table. No need to measure cups and cones – the kit covers the entire bearing set. Companion flanges and flange yokes (page 15) also come with part numbers for the retaining nut and lock pin (500624-7).

For more context on how these power take-offs are used in drivetrain applications, see the Automotive Industry Overview. The internal lube design referenced in the T210-59 document keeps the gears running in heavy-duty environments. Understanding the gear ratios – such as the 24T, 28T, and 30T output drive gears – helps when matching PTO output to the transmission. For a deeper look at engine-driven components, check Internal Combustion Engine.

Does this manual include torque specifications?

No. This is a parts catalog, not a service manual. It lists part numbers and assemblies only. For torque values, you need the corresponding service repair manual.

How do I identify the correct bearing kit for a 1541 PTO?

Turn to page 16. The bearing kits are listed by the PTO model and bearing style. For the cup and cone style on the 1541, the output shaft uses tapered bearings: cup 550449, cone 550446. The kit will include both cups, cones, and the retainer washer. Cross-reference the basic assembly number (313032X) on page 2 with the kit list on page 16. If you have an older revision of the PTO, check the superseding list on page 14 to see if the bearing part number changed.

If you’re rebuilding a top-mounted PTO for a 1541 auxiliary or any of the R805, 7031, 8341 models, you need the original parts breakdown. Access the Factory Manual today and get the part numbers that actually fit. For later model coverage, see the Dana Spicer ES42-5 1990 Parts Catalog – OEM Factory Specs, the Dana Spicer T20000 2005 Parts Catalog – OEM Factory Specs, and the Dana Spicer T210 CM55 1991 Parts Catalog – OEM Factory Specs. All are factory-original, just like this 1974 catalog.