Rodeo S 2WD L4-2.2L (1999)
Steering Wheel: All Technical Service Bulletins
Steering - Steering Wheel Vibration/Shimmy
BULLETIN NUMBER:
SB 00-10-S001
ISSUE DATE:
MARCH 2000
GROUP:
STEERING
SUBJECT:
1998-99 RODEO (UE) Steering wheel vibration, shimmy, or nibble
AFFECTED VEHICLES
Some 1998-99 Rodeo (UE) models.
1999 Rodeo (UE) VIN break point: 8X4351792.
SERVICE INFORMATION
Condition:
Some owners may comment on the presence of steering wheel vibration or shimmy during vehicle operation at medium to high speed. A steering
"nibble" may be felt in the steering wheel when driving on smooth roads (such as concrete) at highway speeds. A "nibble" may be defined as "slight
rotational movement" in the steering wheel.
NOTE:
Depending on road conditions, some vibration that is felt through the steering column, floor, or seat is normal when the vehicle is driven at high
speeds.
Possible cause:
Possible cause may be one or a combination of the following:
^
Tire shake and harmonic vibration due to over-inflation, imbalance, and/or measured excessive tire RFV (radial force variation).
^
Body vibration that is transmitted through the No.1 body mounts (located behind the front bumper), due to insufficient isolation clearance at
the upper-half of those body mounts.
^
Steering feedback from insufficient dampening which is transmitted from the steering rack assembly to the steering column.
Correction:
To correct this condition, a three-phase procedure as summarized below must be followed:
1.
Tire pressure and wheel balance correction.
^
Adjust tire pressure to specification.
^
Rebalance all four wheels/tires (check for flat spots).
^
If the service facility is equipped with a Hunter DSP 9700 tire balance equipment, measure the tire RFV (radial force variation).
2.
Body mount clearance inspection and correction:
^
Inspect and measure the clearance gap of the No.1 body mount.
^
If necessary, install shims to the No.2 and No.3 body mounts to adjust the clearance gap to specification.
3.
Steering yoke spring installation and steering coupling inspection and adjustment:
^
Install new steering yoke spring.
^
Inspect the alignment of the rubber coupling at the 2nd steering shaft.
^
If necessary, adjust the position of the steering shaft to realign the rubber coupling.
