Volvo Trucks VHD Service Manual

Volvo Trucks VHD Service Manual

Fifth wheel

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Service Manual
Trucks
922–502
Group
Fifth Wheel
VN, VHD
PV776-TSP194811

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Table of Contents
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Summarization of Contents

General Information
Fifth Wheel Overview
Introduces the Volvo fifth wheel and the scope of the manual.
Fifth Wheel Specifications
General Fifth Wheel Capacities
Details static vertical load and trailing load capacities.
Slider Specifications
Outlines available slider widths and travel.
Wear Tolerances and Torques
Specifies maximum allowable wear tolerances and torque values for bolts.
Fifth Wheel Height Options
Lists available fifth wheel height dimensions.
Tools
SAE Kingpin Gauge
Describes the SAE Kingpin Gauge tool for Volvo fifth wheels.
Design and Function
Fifth Wheel Components and Operation
Explains the fifth wheel's parts, locking mechanism, and operational positions.
Fifth Wheel Bracket Trunnions
Describes the trunnion arrangement for attaching the fifth wheel plate.
Fifth Wheel Slider System
Explains the air-operational slider for load distribution and adjustment.
Unlocking the Fifth Wheel
Step-by-step guide on how to unlock the fifth wheel.
Kingpin Air Release Switch Operation
Details the operation of the kingpin air release switch with safety warnings.
Operational Procedures
Fifth Wheel Coupling Procedures
Step-by-step instructions for safely coupling a trailer to the fifth wheel.
Fifth Wheel Uncoupling Procedures
Step-by-step instructions for safely uncoupling a trailer from the fifth wheel.
Operating the Slider
Instructions on how to operate the fifth wheel slider, including safety precautions.
Saddle Plate Assembly
Details the components and assembly of the saddle plate.
Troubleshooting
Fifth Wheel Coupling Issues
Lists common causes and repair procedures for fifth wheel coupling problems.
Fifth Wheel Uncoupling Issues
Lists common causes and repair procedures for fifth wheel uncoupling problems.
Service and Maintenance
General Fifth Wheel Inspection
General inspection checklist for fifth wheels, including damage and bolt torque.
Jaw to Kingpin Clearance Checking
Details how to check the clearance between the fifth wheel jaw and the kingpin.
Horizontal Movement Checking
Procedures for checking horizontal movement in the fifth wheel assembly.
Pivot Bracket Movement Checking
Procedure for checking movement between the pivot bracket pin and the bracket.
Fifth Wheel Jaw Adjustment
Step-by-step guide to adjust the fifth wheel jaw to kingpin clearance.
Slider Slack Checking
Procedures for checking longitudinal, lateral, and vertical slack in the slider.
Fifth Wheel Cleaning and Lubrication
Procedures for cleaning and lubricating the fifth wheel and slider assemblies.

Table of Contents