1996 Bronco/F-Series Contents/Index
Group 00: SERVICE INFORMATION

Section 00-04:
Noise, Vibration and Harshness

DESCRIPTION AND OPERATION

Noise, Vibration and Harshness (NVH)

Diagnostic Theory

Know the System

Know the History of the System

Know the History of the Condition

Know the Probability of Certain Conditions Developing

Do Not Cure the Symptom and Leave the Cause

Be Positive the Cause Is Found

Diagnosis Charts

DIAGNOSIS AND TESTING

Inspection and Verification

How to Use this Diagnostic Procedure Section

Customer Interview

Identifying the Condition

Noise Diagnostic Procedure

Non-Axle Noise

Noise Conditions

Vibration Conditions

Harshness Conditions

Leakage Conditions/Low Lube Level

Road Test

Neutral Engine Run-Up Test (NERU)

Drive Engine Run-Up Test (DERU)

Road Test Quick Checks

Road Conditions

Vehicle Preparation

Hoist Test

Symptom Charts

Pinpoint Tests

Components Tests

Noise or Vibration, 4-Wheel Drive Vehicles

Axle Pitch Line Runout and/or Boom

Hub Bearing, Rear

Analysis of Gear Noise

GLOSSARY OF TERMS

Terms

Acceleration

Ambient Temperature

Articulation

Belt Chirp

Belt Squeal

Boom

Bound Up

Brakes Applied

Camber

Caster

Chatter

Chuckle

Clunk

Coast/Deceleration

Coast/Neutral Coast

Controlled Rear Suspension Height

Coupling Shaft

CPS

Cruise

Deceleration

Driveline Angles

Driveshaft

Drivetrain

Drivetrain Damper

Engine Imbalance

Engine Misfire

Engine Run-Up Test

Flexible Coupling

Float

Gravelly Feel

Harshness

Hose Clamp

Hz

Imbalance

Inboard

In-Phase

Isolate

Knock

Neutral Engine Run-Up Test (NERU)

Neutralize (Normalize)

NVH

Outboard

Pinion Shaft

Pumping Feel

Radial/Lateral

Ring Gear

Road Test

Runout

Shake

Slip-Yoke (Slip-Spline)

Tip-In Moan

T.I.R.

Tire Deflection

Tire Force Vibration

Tires Flat Spots

Two-Plane Balance

Vibration

ADJUSTMENTS

Balancing, Brake Drum

Balancing, Driveshaft

Match Mounting Tires

Wheels, Distorted

SERVICE PROCEDURES

Engine/Transmission Mounts, Neutralizing

Exhaust System, Neutralizing

SPECIAL SERVICE TOOLS /EQUIPMENT

SPECIAL SERVICE TOOLS /EQUIPMENT