BRACKET 2541261 - Caterpillar

Illustration 7 g03833942
Magnetic base
Verify that all tires are inflated to the recommended pressure. Inflation pressures that are too low can lead to incorrect runout values.
Warm the tires by roading the machine for 5 to 10 minutes. Roading the machine will also eliminate any flat spots on the tires caused by the machine being parked.
A machine that has been parked needs only 15 to 20 minutes to develop significant flat spots.
To keep any new flat spots from forming on the tires, raise the tires off the ground as soon as possible after roading the machine.
The tires can be raised off the ground using several jacks.
Once the machine is up, be sure to use jack stands for safety and to prevent the tandems from pivoting
For overall simplicity start with the two front tires.
Illustration 8 g03833826
To measure the Total Indicated Runout (TIR) of each tire, you will measure the lug at the centerline of the tire.
Illustration 9 g03833825
Illustration 10 g03833844
Close up view of Illustration 9
Set the magnetic base on a block and mount the dial indictor on the magnetic base positioning it on the center line of the lug.
Mark this location as the starting point of the measurement process and "zero" the dial indicator.
Retract the indicator and rotate the tire to the next lug
Release the indicator to take the measurement.
Write the measurement of the lug for simplified tracking on the exterior wall of the tire next to the lug.
Repeat Steps 8 and 9 until the tire has been fully rotated.
If a lug measures greater than 5 mm (0.2 inch), this is considered to be a high spot.
Once that tire is completed, move to the next one and continue the process until all six tires have been measured.
Take the two tires with the greatest TIR and place them on the front axle. The tires with the lowest TIR should be placed on the front tandem under the cab and the remaining two on the rear tandem.
All jack stands should be removed and the machine lowered back to the ground
Take the machine for a test drive to determine if the Roading Bounce is resolved.
If the issue is resolved, return the machine to service.
If Roading Bounce persists return the machine to the service area and repeat Step 3.
Once the tires are off the ground, the TIR of the rim needs to be measured.
To measure the rim, the tire has to be removed from the rim.
Be sure to follow proper disassembly guidelines.
Illustration 11 g03833395
Using a dial indicator, measure the inner diameter of the rim.
Illustration 12 g03833429
View of rim (A) Weld seam (B) 50.8 mm (2 inch)
Find the rim weld seam (A) and mark 50.8 mm (2 inch) (B) on each side as you are not to measure that area.
Mark a starting point out and "zero" the dial indicator.
Retract the indicator and rotate the rim approximately 30°.
Release the indicator to take the measurement.
Write the measurement on the exterior of the rim.
Continue rotating the rim and taking measurements every 30° until the complete rim is measured.
If any point measures greater than 3.18 mm