tbar numbers
#2
#5
#6
Yes and #1's are also used on some other Ranger 4x4's and on some Explorers, especially 5.0's. Spring rate is computer selected based on option content of the individual vehicle.
If you have a micrometer or caliper, you can measure the bar diameter and cross reference it to these bar codes:
Code 1 / highest rate / 1.09" diameter
Code B / medium rate / 1.06" diameter
Code F / lowest rate / 1.03" diameter
Torsion bars and other springs under load tend to deform over time and the greater the deflection, the faster that deformation can occur. Cranking the torsion bar preload causes greater deflection at full jounce travel and accelerates the sagging process.
If you have a micrometer or caliper, you can measure the bar diameter and cross reference it to these bar codes:
Code 1 / highest rate / 1.09" diameter
Code B / medium rate / 1.06" diameter
Code F / lowest rate / 1.03" diameter
Torsion bars and other springs under load tend to deform over time and the greater the deflection, the faster that deformation can occur. Cranking the torsion bar preload causes greater deflection at full jounce travel and accelerates the sagging process.
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