Fuller RTO-10910B-DM2, RTO-12910B-DM2, RTO-14910B-DM2, RTO-16910B-DM2 2007 Installation Manual

Working on a Fuller RTO-10910B-DM2, RTO-12910B-DM2, RTO-14910B-DM2, RTO-16910B-DM2 2007 Installation Manual job without the right documentation is how you turn a $6,000 transmission into scrap. I’ve pulled wrenches long enough to know that third-party printouts or blurry PDFs from some forum get you stuck halfway through a clutch swap or a wiring hookup. This 80-page OEM factory manual from Fuller is what you need on the bench beside you. Not a reprint. Not a compilation. Original factory print with specs the engineers signed off on.

10-Speed RTO-XX910X-DM2: What the Manual Covers

Chapter 3 in the TOC starts with the 10-Speed RTO-XX910X-DM2 section. That’s the core transmission identification and dimensional data. Page 5 specifically spells out the differences between the four models — RTO-10910B-DM2 through RTO-16910B-DM2 — so you don’t misidentify a rear support or lube line. The manual also includes rear support installation, lubrication requirements that list the exact oil grade and capacity in quarts, and air supply requirements for 10-speed transmissions. If you’re hanging a transmission in a Peterbilt or a Kenworth, these are the numbers you follow.

Mounting Transmission to Engine: Page 62 Procedure

Turning the clutch and transmission into the engine block is where most mistakes happen. Page 62 covers the mounting sequence step by step: alignment pins, bolt torque pattern, and the bellhousing fit. The torque specs are listed in foot-pounds right there. Don’t guess — the spec is in the book. If you skip the heavy and medium duty DM clutch installation procedure on page 59, you’ll be pulling the unit back out inside a week. The manual includes inertia brake relocation instructions for 8 to 6-bolt PTO openings on page 56.

Does This Manual Cover the Wiring Diagrams?

It does — and it doesn’t leave the wiring to your imagination. The OEM responsibility section on page 20 tells you exactly what the vehicle builder provides versus what the transmission harness needs. Typical dash mounted system and tower system diagrams start on page 21. You get the transmission interface (page 23), power harness (page 25), typical dash harness (page 27), gear display module (page 29), and ignition circuit detail (page 31). The J-1587 diagnostic link and J-1939 data link details are included. There’s even a connector pin description table for the 10-speed DM2 wiring diagram. You can trace every wire from the shift console to the ECU without guessing.

Line Inspection: Skip It and Pay the Price

After installation, this manual has a dedicated line inspection section. Page 63 gives the inspection instructions, page 64 shows the actual line inspection form, and page 65 covers the dyno/road test procedure. I’ve had to rebuild transmissions because a shop skipped line inspection and missed a low air pressure issue or a loose sensor. The form on page 66 is a checklist you can photocopy and stick on the clipboard. Use it.

3 Reasons OEM Documentation Beats Aftermarket Manuals

• Torque specs – The torque specifications section in this manual lists values for the transmission-to-engine bolts, clutch cover bolts, and PTO cover fasteners. Aftermarket manuals often round or combine values. Wrong torque = stripped threads or oil leaks.
• Wiring accuracy – Aftermarket wiring diagrams sometimes omit the dimmer control input connection or the start enable circuit. This 2007 manual has those details because Fuller designed them.
• Tool list – The suggested tools page lists the specific spanner sizes and pullers required. You can pull your tool tray before the transmission is on the jack.

Get the Right Torque Data

Torque specifications appear in their own section near the back of the book. I see guys using generic flange bolt specs from the internet and wondering why the transmission leaks oil within 500 miles. Stick with the OEM numbers. The manual also covers power take-off (countershaft driven) mounting and the heavy/medium duty DM clutch installation. Every fastener has a spec.

FAQ – Four Questions I Get Asked

Does this manual cover the RTO-14910B-DM2?

Yes. It covers all four: RTO-10910B-DM2, RTO-12910B-DM2, RTO-14910B-DM2, and RTO-16910B-DM2.

Can I use this for a 2009 model?

This is a 2007 publication. Fuller made changes to the shift console wiring and the J-1939 data link pinout after 2008. For a 2009, you need the later revision. This manual is correct for 2007 model year installations and earlier retrofits.

Does it have the air supply requirement in PSI?

Yes. The air supply requirements for 10-speed transmissions section gives the pressure range and the line size in inches. It also covers the engine retarder requirements and the shift console space dimensions.

Where do I find the clutch adjustment specs?

The heavy and medium duty DM clutch installation chapter starting on page 59 covers the clutch brake alignment and the release bearing clearance. Torque values are in foot-pounds.

Whether you’re a shop owner stocking the reference shelf or a DIY guy doing a one-off swap, having this OEM installation manual on your bench means you stop relying on memory or secondhand advice. The wiring diagrams, torque specs, and line inspection form are factory-approved. Download the Factory Manual now and keep this transmission from becoming a core return.

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External reference: Manual Transmission