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1998 Volvo WAH Service and Repair Manual
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$29.99 USD
Unit price
Covers all 1998 WAH trims — WAH64T Tractor Truck - Short Conventional, WAH64 Straight Truck - Short Conventional, WAH42 Straight Truck - Short Conventional ·
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Complete repair procedures
Wiring diagrams & schematics
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1998 Volvo WAH Service and Repair Manual
Regular price
$29.99 USD
Unit price
1998 Volvo WAH 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
- WAH64T Tractor Truck - Short Conventional
- WAH64 Straight Truck - Short Conventional
- WAH42 Straight Truck - Short Conventional
Engines covered
- 12.7L 12686CC 774Cu. In. l6 DIESEL Turbo/Aftercooled
- 8.3L 8268CC 504Cu. In. l6 DIESEL Turbocharged
- 10.8L 10834CC 661Cu. In. l6 DIESEL Turbocharged
- 11.1L 11096CC 677Cu. In. l6 DIESEL Turbo/Aftercooled
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
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH HALDEX MANIFOLD DASH VALVES (MDV) USED IN TRACTOR AND TRAILER PARKING BRAKES. THESE VALVES DO NOT MEET THE REQUIREMENTS OF FMVSS NO. 121, "AIR B
Consequence
THE LOSS OF SERVICE BRAKES CAN OCCUR, INCREASING THE RISK OF A CRASH.
Remedy
DEALERS WILL REPLACE THE SUSPECT VALVES.
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS BUILT WITH BENDIX AIR ABS WITH AN EC-17 1030R ELECTRONIC CONTROL UNIT (ECU), THERE HAVE BEEN REPORTS OF UNWANTED ABS ACTIVATION AT LOW SPEEDS CAUSED BY 1) CHAF
Consequence
THIS CONDITION COULD CAUSE THE ABS ECU TO EXHAUST THE AIR AT THE AIR BRAKE MODULATORS FOR ONE OR MOR
Remedy
DEALERS WILL REPLACE THE ABS ECU.
VEHICLE DESCRIPTION: HEAVY DUTY TRUCKS EQUIPPED WITH AFTERMARKET ALUMINUM DUAL WHEELS, 22.5X8.25, ONE-PIECE, TUBELESS, SUPPLIED BY ACCURIDE/AKW. CERTAIN DESIGN REVISIONS COMBINED WITH PROCESS CONDIT
Consequence
THIS CONDITION CAN CAUSE FAILURE OF THESE WHEELS.
Remedy
ACCURIDE/AKW WILL REPLACE THESE WHEELS.
VEHICLE DESCRIPTION: CLASS 8 HEAVY DUTY TRUCKS. THE AIR SUSPENSION CONTROL VALVE SUPPLY LINE WAS NOT PLUMBED THROUGH AN AIR PRESSURE PROTECTION VALVE. IN THE EVENT OF A FAILURE, THERE WOULD BE LOSS
Consequence
THIS CONDITION WOULD RESULT IN INCREASED STOPPING DISTANCES.
Remedy
DEALERS WILL INSTALL THE NECESSARY AIR PRESSURE PROTECTION VALVE.
Volvo Chassis - Equipped with An Automated Manual Transmission (AMT, iShift) - SNV 19-002 - AMT Oil Filter Housing Corrosion
Volvo Chassis - Drag Link Inspection And Replacement Criteria
Programming Failure - Chassis With Cummins Engine And An Allison Transmission
DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer
AMT Control Housing Bench Testing - False Failures
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP)
DTC U012100 - Lost Communication With Anti-Lock Brake System (ABS) Control Module, No Additional Information
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions
Showing the 8 most recent of 26 technical service bulletins on file with NHTSA.
No complaints filed
No consumer complaints on file with NHTSA for the 1998 Volvo WAH.