Ford Explorer: Wheels and Tires / General Procedures - Wheel to Tire Runout Minimization
Check
NOTE:
Road Force® values in illustrations are shown in pounds.
NOTE:
Match mounting is a technique used to reduce radial runout
or road force on wheel and tire assemblies. Excessive runout is a source
of ride quality complaints and match mounting can be used to minimize
the runout. Match mounting can be accomplished by changing the position
of the tire on the wheel.
NOTE:
Position the wheel and tire assembly on a tire machine and
put a reference mark on the tire sidewall at the valve stem position.
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Valve stem.
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Reference mark.
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NOTICE:
For vehicles equipped with a TPMS,
the sensor may be damaged by incorrect tire mounting or dismounting.
Dismount the tire from the wheel as instructed in the procedure. Failure
to follow these instructions may result in TPMS component damage.
NOTE:
Always make sure that the final high spot and
measurement values are permanently marked on the inward sidewall of the
tire for reference during future wheel and tire service.
Marker. Using a suitable tire machine, separate the tire beads from the wheel.
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Lubricate the tire beads using a suitable fast drying,
corrosion inhibiting tire bead lubricant. Position the tire 180 degrees
(half-way around) on the rim so the valve stem reference mark is now
opposite the valve stem.
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Re-inflate the wheel and tire assembly to the specified
air pressure and measure the assembly again using a suitable dial
indicator or Hunter Road Force® 9700 Series Wheel Balancer. Mark the
second high spot on the tire.
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If the runout or Road Force is reduced to within
specifications, the concern has been resolved. Balance the assembly and
install on the vehicle using the Wheel-to-Hub Optimization procedure.
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If the second runout or Road Force® measurement is still
not within specification and both high spots are close to each other
(within 101.6 mm [4 in]), the root cause is probably the tire (the high
spot followed the tire).
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First high spot on the tire.
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Second high spot on the tire.
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To be SURE that the tire is causing the high runout, it
is necessary to have 2 runout or Road Force® measurements that are not
within specification and the high spots must be in approximately the
same location on the tire's sidewall. If the tire is the cause, install a
new tire, balance the assembly and install on the vehicle using the
Wheel-to-Hub Optimization procedure. If the second high spot is not
within 101.6 mm (4 in) of the first high spot, proceed to the next step.
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If the second high spot is still above specification and
is within 101.6 mm (4 in) of being opposite the first high spot on the
wheel, the root cause is probably the wheel (the high spot followed the
wheel). Dismount the tire from the wheel, mount the wheel on a balancer
and check the wheel runout. If the wheel runout exceeds 1.14 mm (0.0449
in), install a new wheel, balance the assembly and install on the
vehicle using the Wheel-to-Hub Optimization procedure.
Refer to: Wheel to Hub Runout Minimization (204-04A Wheels and Tires, General Procedures).
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First high spot on the tire.
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Second high spot on the tire.
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NOTE:
If the second high spot did not follow the wheel or
the tire and the runout is still not within specification, improvements
may be made by rotating the tire 90 degrees (one-fourth turn).
Draw an arrow on the tire sidewall from the second high
spot towards the first high spot (in the shortest direction).
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First high spot on the tire
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Second high spot on the tire
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Separate the tire beads from the wheel and rotate the
tire 90 degrees (one-fourth turn) in the direction of the arrow.
Check
NOTE:
Wheel-to-hub optimization is important. Clearance between
the wheel and hub can be used to offset or neutralize the Road Force® or
run-out of the wheel and tire assembly...
Materials
Name
Specification
Motorcraft® High Temperature Nickel Anti-Seize LubricantXL-2
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Motorcraft® Wheel and Tire CleanerZC-37-A
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Removal
With the..
Other information:
Check
NOTE:
Wheel-to-hub optimization is important. Clearance between
the wheel and hub can be used to offset or neutralize the Road Force® or
run-out of the wheel and tire assembly. For every 0.001 inch of
wheel-to-hub clearance, the Road Force® can be affected between 1 and 3
pounds depending on the tire stiffness...
Removal
NOTE:
Removal steps in this procedure may contain installation details.
Remove the brake pads.
Refer to: Brake Pads (206-04 Rear Disc Brake, Removal and Installation).
Remove the bolts and the anchor plate. Discard the bolts
Torque:
122 lb...
Categories
Note: You may not be able to shift out of park (P) unless the intelligent
access key is inside your vehicle.
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