Description

Dana Spicer 28000 1995 Service Manual

You’ve got a Dana Spicer 28000 1995 Service Manual in your hands — or you should. I’ve seen too many guys tear into one of these powershift transmissions with a generic guide and end up chasing torque values that don’t exist. That’s how you snap bolts or ruin a clutch pack. This is the real deal: 92 pages, factory-issued by Dana Spicer Off-Highway Products Division, covering the R & HR Model 3 and 6 speed long drop with range shift. If you’re planning to crack open a 28000, you need this on the bench, not a PDF you found on some forum.

Back in ’95 when this manual came out, Dana Spicer was still printing these for dealer techs. The Transmission section walks you through disassembly, cleaning, inspection, and reassembly in the order you’d actually do the work. There’s a dedicated chapter on the Valve control assembly (Fig. G) and another on the axle disconnect and mechanical parking Brake (Fig. H). You get sectional views for the converter, clutch groups, regulator valve, charging pump, and filter group. These aren’t photoshopped diagrams — they’re the same drawings the assembly line used.

Aftermarket manuals love to skip the hard stuff. This one doesn’t. It tells you how to tow or push-start (hint: you can’t — lift the rear wheels or disconnect the driveline). It gives you the exact procedure for shielded bearing installation and ring gear setup across four pages. The troubleshooting guide on page 31 covers hydraulic pressure drops, slipping clutches, and shifting issues that’ll make you want to throw a wrench. But if you follow the sequence, you’ll fix it on the first go.

92 Pages of Factory Service Data

The Specification and Service Data section on page 30 is where you’ll live. Fluid capacities, lube specs, and torque values for every critical fastener. I don’t trust a torque wrench reading until I’ve cross-checked it with this page. The lubrication chart tells you exactly what weight oil to use and when to change it. Skip that step and you’re rebuilding again in six months. The manual also includes the HR Model external plumbing diagram and the three-speed power flow chart — stuff you won’t find in any aftermarket reprint.

What Does This Manual Cover?

Models: 28000 series, R & HR with 3-speed or 6-speed, long drop with range shift. Includes the converter assembly, clutch packs, control valve, and the mechanical parking brake. Does not cover the earlier 27000 or the newer ES series, but for that you can check out the Dana Spicer 1372-A Service Manual – Factory Specs & Rebuild Guide or the Dana Spicer ES60-5, CM59, ES60-5A, ES60-5C, ES60-5D Service Manual if you need the later models. For more on transmission fundamentals in general, Wikipedia has a decent overview of a Manual Transmission — but it won’t help you torque a valve body. That’s why you need the OEM manual.

Disassembly and Reassembly – The Real Work

Starts on page 1 with disassembly. You’ll remove the converter, then the transmission case groups. Each step references the corresponding figure (A through I). The cleaning and inspection section on page 14 is short but critical — check every clutch plate for warpage, measure spring heights, inspect bearings for pitting. If you skip the inspection, you’re gambling. The reassembly section from page 15 onward gives you the order for installing clutch packs, seals, and bearings. Pay attention to the shielded bearing installation on page 35 — that’s where I’ve seen guys press bearings in backwards and wreck the housing.

OEM Documentation vs Aftermarket Guesswork

I’ve used third-party manuals that claim to cover the 28000. Half of them don’t include the 6-speed section or the R-model variations. Some even list wrong torque specs for the converter-to-drive plate bolts. This manual came from Dana Spicer’s own Off-Highway Products Division. It’s copyrighted 1999 (revision 7-95) and distributed under limited license. No reprints, no photocopies, no generic parts lists. If you need a part, it tells you to give the dealer the serial and model number — because that’s the only way to get the right parts. That’s the level of accuracy you’re buying.

For a different Dana Spicer model, the Dana Spicer ES46-5 ES56-5 2002 Service Manual – 40 Pages of Factory Specs covers the ES-series. But the 28000 is a beast of its own. If you’re working on a Manual Transmission, the principles of hydraulics and clutch engagement are similar, but the specifics here are unique to the Spicer powershift.

Frequently Asked Questions

Does this manual cover the 6-speed version?

Yes. The R & HR Model 3 & 6 speed section starts on page 47. It includes the range shift and power flow diagrams for both speeds.

What torque values are listed in this manual?

Torque specs for converter-to-drive plate bolts, clutch pack retaining rings, valve body bolts, and other critical fasteners are given in the Specification and Service Data on page 30. Fluid capacities for the transmission and converter are also listed. However, you must use the manual’s sequence — don’t skip ahead. The specs are for specific bolt grades and lubrication conditions. I’ve seen guys use dry torque values on lubricated threads and snap bolts. Follow the note in the manual.

Can I use this manual for the Dana Spicer 28000 with a different drop length?

This manual covers the long drop with range shift. If you have a short drop or a different range configuration, some measurements may differ. The internal clutch and valve groups are the same, but check the sectional views (Fig. C through G) to confirm your housing variant.

Is this the same manual used by Dana Spicer dealers?

Yes. It is the exact OEM document from Dana Spicer Off-Highway Products Division, revision 7-95. The only difference is you get a digital copy instead of a paper binder. Page-for-page identical.

If you’re serious about rebuilding a 28000 powershift transmission, get the factory data on your screen or printed out. Don’t waste time on third-party rehashes that miss the brake assembly details or the valve body tuning. Access the Factory Manual and keep it within arm’s reach while you work. Your torque wrench will thank you.