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Vehicle Lead/Pull Troubleshooting Guide

This flow chart provides steps to troubleshoot a vehicle that pulls to one side while driving. The steps include performing a preliminary check of tires, vehicle height, and brakes. Then road testing the vehicle and determining if the steering is off center or the vehicle pulls. Additional steps include checking wheel alignment, adjusting camber, and potentially replacing a tire if the issue persists. The goal is to eliminate any lead/pull through a series of tests and adjustments.

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salusfrank
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72 views1 page

Vehicle Lead/Pull Troubleshooting Guide

This flow chart provides steps to troubleshoot a vehicle that pulls to one side while driving. The steps include performing a preliminary check of tires, vehicle height, and brakes. Then road testing the vehicle and determining if the steering is off center or the vehicle pulls. Additional steps include checking wheel alignment, adjusting camber, and potentially replacing a tire if the issue persists. The goal is to eliminate any lead/pull through a series of tests and adjustments.

Uploaded by

salusfrank
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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SA-2

SUSPENSION AND AXLE - TROUBLESHOOTING


SA28V-01

REPAIR PROCEDURES
HINT:
This is a flow chart for vehicle pull.
START

Preliminary Check * ROAD TEST NO Is there steering NO


COMPLETE
 Tire pressure Does the vehicle lead/pull? off center?
 Vehicle height YES YES
 Brake dragging

Adjust front tie rods.


YES
Are the tires uni-directional type?
NO NO
Cross switch front tire & wheel ROAD TEST
assemblies (left & right). Does the vehicle still lead/pull?
YES
Choose the position of front tire & wheel YES Does the vehicle lead/pull in
assemblies where there is least amount of pull. same direction as before?
NO

Check front wheel alignment. YES NO Is the lead/pull stronger


Is it within specification? than before?
NO YES

Adjust front wheel alignment. Reverse the front left side


tire and rebalance it.

ROAD TEST
Does the vehicle still lead/pull? ROAD TEST NO
Does the vehicle still lead/pull?
NO YES
YES
Does the vehicle
COMPLETE lead/pull to the left?
NOTICE : Do not exceed 1° of cross camber.
YES NO Do not exceed adjustment range.

Increase right front camber and decrease Increase left front camber and decrease
left front camber until lead/pull is eliminated. right front camber until lead/pull is eliminated.

NO ROAD TEST YES


Contact your local retail tire distributor.
Does the vehicle still lead/pull?

* Select a flat road where the vehicle can be driven in a straight line for 100 meters at a constant speed
of 35mph. Please confirm safety and set the steering wheel to its straight position. Drive the vehicle in
a straight line for 100 meters at a constant speed of 35mph without holding the steering wheel.

(1) The vehicle can keep straight but the steering wheel has some angle.
STEERING OFF CENTER (See page SR-9 )
(2) The vehicle cannot keep straight.
STEERING PULL

2002 ECHO (RM884U)

Author: Date: 962

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