Suzuki XL7 2007 Service Manual page 1080

2D-16 Wheels and Tires:
Vibration Analysis - Tire and Wheel
Test Description
The numbers below refer to the step numbers in the
diagnostic table:
4.
A build-up of foreign material on a tire and wheel
assembly and/or a damaged, abnormally or excessively
worn tire and wheel assembly could cause a vibration
disturbance.
6.
Tire and wheel assemblies that exhibit excessive runout
when measured while mounted on the vehicle, may or
may not be contributing to, or causing a vibration
disturbance. On-vehicle runout, if present, could
contribute to, or cause a vibration disturbance, but the
cause of the on-vehicle runout may not be the tire and
wheel assemblies.
7.
Tire and wheel assemblies that exhibit excessive runout
when measured off of the vehicle could cause a vibration
disturbance.
9.
Tire and wheel assemblies that exhibit marginal runout—
within acceptable limits, but close to the maximum—
when measured off of the vehicle could still be
contributing to a vibration disturbance, if its mating hub/
axle flange also exhibits marginal runout. When the tire
and wheel assembly and the hub axle flange are
mounted to each other, the combined stack-up of their
marginal amounts of runout could combine to produce
an excessive amount of runout, which could cause a
vibration disturbance.
Step
Has the Vibration Analysis - Road Testing table been
1 completed?
Based on the Vibration Analysis - Road Testing table, is the
2
concern first-order tire and wheel assembly related?
Based on the Vibration Analysis - Road Testing table, is the
3 concern second-order, or higher-order tire and wheel
assembly related?
Visually inspect the tire and wheel assemblies for the
following:
• Debris build-up, such as packed mud, undercoating, ice/
snow buildup, road tar, etc.
4
• Damage, abnormal or excessive wear
Refer to "Tire and Wheel Inspection".
Do any of the tire and wheel assemblies exhibit any of the
conditions listed?
1. Remove the debris from the tire and wheel assemblies.
2. Replace the damaged, abnormally or excessively worn
5
wheels or tires as necessary.
Did you complete the repair or replacement?
Measure the on-vehicle runout of the tire and wheel
assemblies. Refer to "Tire and Wheel Assembly Runout
6
Measurement - On-Vehicle".
Does the runout measurement indicate a runout concern?
14.
Brake rotors and/or brake drums, if equipped, that
exhibit excessive imbalance could contribute to, or
possibly cause a vibration disturbance.
15.
A hub/axle flange and/or wheel studs that exhibit
excessive runout could cause a vibration disturbance.
16.
When the tire and wheel assembly and the hub axle
flange are mounted to each other, the combined stack-
up of their marginal amounts of runout could combine to
produce an excessive amount of runout, which could
cause a vibration disturbance. Match-mounting or
vectoring the tire and wheel assembly to the hub/axle
flange will modify the amount of combined runout.
18.
Force variation may be present in a tire and wheel
assembly that exhibited acceptable balance and runout.
Force variation, if present, could contribute to, or cause
a vibration disturbance.
20.
Vibration disturbances could be affected by, or possibly
caused by, components that are susceptible to steering
input and/or torque-load input.
22.
On-vehicle balancing, or finish-balancing can be used to
reduce small amounts of imbalance which may be
present as a result of the combined stack-up of the tire
and wheel assembly with other components which may
exhibit marginal balance.
Action Yes
Go to "Vibration
Go to Step 2 Analysis - Road
Go to Step 4 Go to Step 3
Go to "Vibration
Go to Step 18 Analysis - Road
Go to Step 5 Go to Step 6
Go to Step 23
Go to Step 7 Go to Step 12
No
Testing: "
Testing: "
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