2004 Volvo VNL Service and Repair Manual

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Covers all 2004 VNL trims — Base Straight Truck - Long Conventional, Base Tractor Truck - Long Conventional ·
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2004 Volvo VNL service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Base Straight Truck - Long Conventional
  • Base Tractor Truck - Long Conventional

Engines covered

  • 12.1L 740Cu. In. 6 DIESEL
  • 14.9L 912Cu. In. l6 DIESEL Turbocharged

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #06V02100026/01/2006Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

ON CERTAIN TRUCKS EQUIPPED WITH D12D ENGINES, THE EXHAUST GAS RECIRCULATION (EGR) COOLER INLET PIPES OR THE PIPES THAT CONNECT THE EGR VALVES TO THE COOLER MAY CRACK OR BREAK.

Consequence

IF THE PIPES OR THE COOLER INLET PIPES FAIL AND ARE LEFT UNTREATED, THE AIR CLEANER AND INNER FENDER

Remedy

DEALERS WILL INSPECT AND REPAIR THE EGR COOLER PIPES AS REQUIRED AND INSTALL A HEAT SHIELD FREE OF C

NHTSA #10V28200024/06/2010Component: STEERING:LINKAGES:DRAG:LINK:CONNECTION

VOLVO TRUCKS IS RECALLING CERTAIN MODEL YEAR 2001-2006 VNL AND VNM TRUCKS MANUFACTURED WITH A TRW SEALED DRAG LINKS. CERTAIN FACTORS CAN EXIST, WHICH IF LEFT UNTREATED MAY RESULT IN A BALL SOCKET SE

Consequence

BALL SOCKET SEPARATION AT THE DRAG LINK RESULTS IN COMPLETE LOSS OF STEERING, AND THEREFORE CAN RESU

Remedy

DEALERS WILL INSPECT AND REPAIR THE BALL SOCKET OR THE DRAG LINK AS REQUIRED IF NECESSARY. AS PARTS

NHTSA #09V17300021/05/2009Component: VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR

VOLVO TRUCKS IS RECALLING 127,764 MY 2001-2008 VHD, VNL, VNM, AND MY 2005-2008 VT TRUCKS. A SEAL MAY FAIL ALLOWING WATER AND CONTAMINANTS TO SEEP INTO THE WINDSHIELD WIPER MOTOR.

Consequence

IF THIS HAPPENS A SHORT CIRCUIT MAY OCCUR, WHICH OVER TIME COULD POSSIBLY LEAD TO A VEHICLE FIRE.

Remedy

VOLVO WILL REPLACE THE WIPER MOTOR FREE OF CHARGE. SINCE THIS RECALL INVOLVES A LARGE NUMBER OF VE

NHTSA #05V49800002/11/2005Component: WHEELS

CERTAIN TRUCKS EQUIPPED WITH FRONT STEER AXLE AIR SUSPENSION MAY DEVELOP A FRONT WHEEL WOBBLE WHEN THE TIRES BECOME WORN.

Consequence

IF THE WOBBLE PERSISTS AND IS LEFT UNTREATED, DAMAGE MAY OCCUR WHICH COULD IMPAIR VEHICLE CONTROL AN

Remedy

DEALERS WILL REPAIR AND REPLACE THE FRONT VERTICAL SHOCKS ON EACH SIDE OF THE FRONT SUSPENSION AND A

NHTSA #05V34600001/08/2005Component: EQUIPMENT:OTHER:LABELS

CERTAIN HEAVY DUTY TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 120, "TIRE SELECTION AND RIMS FOR MOTOR VEHICLES OTHER THAN PASSENGER CARS." THE TIRE SIZE

Consequence

THE CERTIFICATION LABEL IS INCORRECT GIVING IMPROPER INFORMATION.

Remedy

DEALERS WILL REPLACE THE CERTIFICATION LABELS. THE RECALL BEGAN ON SEPTEMBER 12, 2005. OWNERS MAY

TSB #10241904

CBR: Volvo VHD & VN Models - Vehicle Wil Not Start, PTO Active Message Displayed In Cluster, PTO Light On When PTO Switch Is Turned Off

TSB #10241906

TSB: Barksdale Leveling Valve, Leak Test

TSB #10240244

CBR: Programming Failure - Chassis With Cummins Engine And An Allison Transmission

TSB #10219421

Engine Control Module (EMS) Software (MSW) Information August 2022; Improvement List (Change Log) - US21+OBD22 (13L VGT, TC) And US17+OBD22 (11L) Emissions

TSB #10215308

Volvo Chassis - Equipped with An Automated Manual Transmission (AMT, iShift) - SNV 19-002 - AMT Oil Filter Housing Corrosion

TSB #10215306

Volvo Chassis - Drag Link Inspection And Replacement Criteria

TSB #10215281

Programming Failure - Chassis With Cummins Engine And An Allison Transmission

TSB #10215282

DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer

Showing the 8 most recent of 43 technical service bulletins on file with NHTSA.

20091117Component: STEERINGCrash reported

DRAG LINK CAME LOOSE WHILE OUR DRIVER WAS PULLING A LOAD ON INTERSTATE 81. HE LOST ALL STEERING AND DROVE INTO A GUARDRAIL. THE TOTAL COSTS FOR REPAIRS TO US WAS $17,022.93. THE TRACTOR HAD JUST BE

20091204Component: STEERING:LINKAGES

WEST BOUND ON 288. DID MY PRE TRIP. I WAS FULLY LOADED. I WAS IN THE MIDDLE LANE. ALL OF THE SUDDEN MY STEERING WHEEL GOT LIGHT. IT DID NOT HAVE ANY CONTROL. THE TRUCK STARTED DRIFTING TO THE RI

20090417Component: ENGINE AND ENGINE COOLING

MY VOLVO TRUCK STARTED HAVING LOW POWER PROBLEM AFTER A CERTIFIED VOLVO DEALER REPLACED COPPER CUPS ON IT. TO FIX THAT PROBLEM, I TOOK THE TRUCK TO ANOTHER CERTIFIED VOLVO DEALER, WHO REPLACED EGR VAL

20050427Component: TIRES

THERE WERE TWO RECAPPED TIRES PLACED ON THE REAR-EXTENDED LIFT AXLE OF A DUMP TRUCK. WHILE DRIVING 55 MPH ONE TIRE BLEW OUT, AND THE OTHER TIRE SEPARATED WHILE CARRYING A LOAD. UPON SPEAKING WITH TH

20040121Component: VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

GLASS MIRRORS VIBRATED TO THE POINT WERE IT WAS DIFFICULT TO SEE. *AK

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