Mariner 2WD L4-2.3L VIN Z (2005)
Tires: All Technical Service Bulletins
Tires - Vibration Highway at Speeds
TSB 05-20-6
10/17/05
HIGHWAY SPEED VIBRATION - VEHICLES BUILT
BEFORE 7/1/2005 EQUIPPED WITH CONTITRAC
P235/70R16 104T TIRES
FORD:
2005-2006 Escape
MERCURY:
2005-2006 Mariner
This article supersedes TSB 05-9-13 to update the Service Procedure.
ISSUE
Some 2005-2006 Escapes/Mariners built before 7/1/2005 equipped with Continental Contitrac(TM) P235/70R16 104T tires only, may exhibit a
vibration at highway speeds over a wide speed range.
ACTION
Refer to the following Service Procedure to check the vehicle tires to determine if any need replacement. Only replace the individual tires identified as
requiring replacement by the Service Procedure.
SERVICE PROCEDURE
NOTE
THIS MESSAGE IS INTENDED TO ADDRESS FIRST ORDER TIRE VIBRATIONS.
NOTE
THE 20 MILE (32 KM) VIBRATION EVALUATION MUST BE PERFORMED TO REMOVE FLAT SPOTS. IF NOT, THE TIRE BALANCE
AND ROAD FORCE MEASUREMENTS WILL NOT BE ACCURATE.
1.
Drive the vehicle at highway speeds for 20 miles (32 km) to evaluate the vibration and eliminate flat spotting.
NOTE
IF THE VIBRATION GOES AWAY DURING THE 20 MILE (32 KM) VIBRATION EVALUATION, THE CONCERN IS DUE TO TIRE FLAT
SPOTTING, WHICH IS A NORMAL TIRE CONDITION. NO FURTHER DIAGNOSIS OR REPAIRS SHOULD BE PERFORMED.
2.
If road force measurement equipment (Hunter G5P9700/9712, or equivalent) is available, proceed to Step 3. If not, balance the tires with a
standard balancer and use a dial indicator to locate and mark the high point of each tire's centerline radial runout. Record the runout measurement
of each tire and wheel assembly. If this measurement exceeds .040" (1.02 mm) check to see if the wheel is bent or damaged. If the excess runout is
attributable to the tire, replace with the appropriate (BSW or OWL) Continental P235/70R16 tire. The Continental Part Number for BSW is 9002
1548250-0000, the OWL Part Number is 9002 1548100-0000. Proceed to Steps 5 and 6.
NOTE
DO NOT USE THE SPARE TIRE AS A REPLACEMENT.
NOTE
THE PROCEDURE IN THIS TSB IS FAR MORE EFFECTIVE WHEN USING ROAD FORCE MEASUREMENT EQUIPMENT. ONLY USE A
STANDARD BALANCER AND MANUALLY CHECK RUN OUT WHEN ABSOLUTELY NECESSARY. THERE IS A WEBSITE AVAILABLE
TO LOCATE THE NEAREST FACILITY WITH ROAD FORCE EQUIPMENT AVAILABLE.
NOTE
SUPPRESS ROUND OFF FUNCTION ON ROAD FORCE BALANCER TO ALLOW ACTUAL RESIDUALS TO BE DISPLAYED.
3.
Perform the road force measurement immediately after driving the vehicle. Remove the wheel assemblies. Measure the road force variation of all
four (4) tires. Measure and mark the tire HIGH road force variation point (R1H) on all four (4) tires prior to dismounting them from the road force
measurement equipment. Balance as required to 0.35 oz (log) or less of imbalance (check both two-plane and static). If any wheel assembly
measures more than 18 lbs (8 kg) for R1H then proceed to Step 4. If less proceed to Step 5.
4.
Using the road force measurement equipment, determine the low spot of the wheel run out. Match high point force variation on the tire with the
