Description

Paccar 579 2013 User Manual – Aftertreatment System Operations

If you’ve ever had a Paccar 579 shut down on you because the DPF was plugged and you couldn’t figure out how to start a parked regeneration, you know the frustration. The dash lights flash, the engine derates, and you’re stuck on the shoulder. The Paccar 579 2013 User Manual is the document that lets you avoid that. It’s not a repair manual—it’s the driver’s handbook for the aftertreatment system, and it covers exactly what you need to keep the truck moving. I’ve torqued head bolts for 28 years, and I still grab this when a driver calls about regen issues. It’s 63 pages of factory‑authorized content, straight from Paccar.

Paccar 579 2013 User Manual – Overview of Aftertreatment Systems

This manual is organized into three major sections: Sécurité (Safety), Commandes (Controls), and Information. Right on page 1 you see the Paccar logo and the emissions year. The table of contents lists exactly the systems you deal with daily: the Diesel Particulate Filter (DPF) and the Selective Catalytic Reduction (SCR) system. There’s no fluff here—just the procedures you need to operate and understand the aftertreatment hardware. Page 5 kicks off the safety alerts, and you better read those before you touch anything.

Sécurité Section: Safety Alerts You Must Heed

The safety chapter is where most drivers skip straight past. Don’t. The manual uses standard safety alert symbols and explains the risks of hot exhaust components during regeneration. It also covers proper use of the engine brake and idle management in cold weather. If you ignore the warnings about DEF contamination, you’ll be replacing a $2,000 SCR catalyst. That’s on you.

DPF Regeneration Procedure from the Factory

The manual walks you through the regeneration process in the Commandes chapter. You get the conditions required for automatic regen, how to initiate a parked regen, and how to interrupt it if something goes wrong. It also covers the cold‑weather idle feature—critical if you’re running in northern states. The procedure is direct: key positions, button presses, and indicator light interpretations. No guesswork.

SCR System and DEF Fluid Handling

In the Information section, the manual dedicates several pages to the SCR system and Diesel Exhaust Fluid (DEF). It specifies recommended DEF fluid characteristics, storage temperatures, handling, disposal, and what happens if you get contaminated fluid. The manual even covers how to handle frozen DEF—something most aftermarket guides get wrong. If you skip this, you’ll be dealing with crystallized injectors.

Does This Manual Include Torque Specs?

No, and it shouldn’t. This is a driver’s manual, not a service manual. What it does give you is the operational routine that keeps the aftertreatment system healthy. For torque specs on bolts or service intervals, you need the PACCAR Engine Aftertreatment Systems Operator’s Manual or the PACCAR PX-9 Driver’s Manual. Those are separate documents for the shop. This manual is for the person behind the wheel—or for the DIY owner who wants to understand why the regen light is on before calling a tow truck.

63 Pages of Driver‑Focused Guidance

At 63 pages, it’s slim by factory standards. But every page matters. You get the full aftertreatment system introduction, DPF overview, SCR overview, and the index. It’s produced by Paccar Inc., part number Y53‑1134‑1B1. The manual is printed in French, reflecting the Canadian market where these trucks are common. If you’re running a Paccar 579 and you haven’t read this, you’re working blind. For broader transmission education, check the Manual Transmission principles—understanding the entire drivetrain helps, but start with the aftertreatment.

Is this manual available in English?

This copy is the original French‑language edition for the Canadian market. English editions may be available separately. Check the related manuals below.

Does this manual cover repair procedures like replacing the DPF?

No, this is a driver’s manual for operating the aftertreatment system. It covers regeneration procedures, DEF handling, safety alerts, and system overview. For repair, you need the service manual. However, understanding regen logic helps avoid unnecessary service calls and prevents costly mistakes caused by driver error. Many techs keep this as a reference for explaining to customers why their DPF light is on.

I’ve seen too many drivers burn up a DPF because they didn’t know how to initiate a regen. Access the Factory Manual and keep it in the glovebox. It’s the difference between a derate and a completed route. For additional driver manuals, see PACCAR PX-7 Driver’s Manual and the Manual Transmission primer if you’re also running a stick shift.

• PACCAR Engine Aftertreatment Systems Operator’s Manual
• PACCAR PX-9 Driver’s Manual
• PACCAR PX-7 Driver’s Manual