Vibration Diagnostic Aids; Vibration Diagnostic Aids - Vibration Intermittent Or Not Duplicated - Suzuki XL7 2007 Service Manual

Step
1. Select a smooth, level road and slowly accelerate the
vehicle up to the speed at which the disturbance occurs.
2. Decelerate and safely downshift by one gear range.
18
3. Operate the vehicle at the same VEHICLE SPEED at
which the disturbance occurs.
Does the same disturbance still occur while going the same
vehicle speed in a lower gear range?
If the J 38792-A is not available, refer to "Symptoms -
19 Vibration Diagnosis and Correction".
Did the J 38792-A detect a dominant frequency?
1. If the J 38792-VS IS available, use the drive axle final
drive ratio, the specific transmission gear ratio, and the
engine RPM to make a comparison to the dominant
frequency reading recorded.
20
2. If the J 38792-VS is NOT available, compare the dominant
frequency reading recorded to the component rotational
data which you calculated previously.
Does the frequency data clearly fall within the tire/wheel
parameters ONLY?
Does the frequency data clearly fall within the propeller shaft
21
parameters ONLY?
Is the vehicle equipped with a solid drive axle?
22

Vibration Diagnostic Aids

NOTE
If you have not reviewed the Diagnostic
Starting Point - Vibration Diagnosis and
completed the Vibration Analysis tables as
indicated, refer to "Diagnostic Starting Point -
Vibration Diagnosis and Correction"
BEFORE proceeding.
The diagnostic information contained in this Diagnostic
Aids section will help you determine the correct course
of action to take for the following 4 main conditions.
Refer to the appropriate condition from this list:
• "Vibration Diagnostic Aids - Vibration Intermittent or
Not Duplicated"
• "Vibration Diagnostic Aids - Vibration Duplicated,
Component Not Identified"
• "Vibration Diagnostic Aids - Vibration Duplicated,
Difficult to Isolate/Balance Component"
• "Vibration Diagnostic Aids - Vibration Duplicated,
Appears to be Potential Operating Characteristic"
Action
Vibration Diagnostic Aids - Vibration
Intermittent or Not Duplicated
If you have not been able to duplicate the vibration
concern or have only been able to duplicate the concern
intermittently, review the following information.
Most vibration concerns that cannot be duplicated are
due to either specific conditions that are not present
during the duplicating attempts, or due to not following
the procedures designed to duplicate concerns properly
and in the sequence indicated.
General Information:
Yes
Go to "Vibration
Analysis - Hub and/or
Axle Input: "
Go to Step 20
Go to "Vibration
Analysis - Tire and
Wheel: "
Go to "Vibration
Analysis - Driveline: "
Go to "Symptoms -
Vibration Diagnosis
and Correction"
NOTE
If you have not completed the Vibration
Analysis tables as indicated and reviewed
Vibration Diagnostic Aids, refer to "Vibration
Diagnostic Aids" BEFORE proceeding.
0A-64
No
Go to "Vibration
Analysis - Engine: "
Go to "Symptoms -
Vibration Diagnosis
and Correction"
Go to Step 21
Go to Step 22
Go to "Vibration
Analysis - Hub and/or
Axle Input: "