Track tension is one of those things most operators don’t think about — until it costs them thousands.
Most people set it once when they buy the machine and forget it exists. That’s a mistake. Track tension changes constantly based on temperature, terrain, hours of use, and natural stretching of the rubber or steel.
Get it wrong, and the consequences are expensive.
Too Loose:
✔ Tracks can derail mid-job (rebuilding a derailed track costs hours and sometimes thousands)
✔ Increased wear on the sprocket
✔ Slipping under load
✔ Vibration that damages bearings
✔ Unpredictable handling on slopes
Too Tight:
✔ Rapid wear on rollers, idlers, and the entire undercarriage
✔ Stress on hydraulic motors
✔ Premature track failure (tracks costing $1,500–$3,000 to replace)
✔ Increased fuel consumption
✔ Hot bearings and seal damage
A new undercarriage rebuild can cost $8,000–$15,000. Track tension is what determines whether you’ll need one at 4,000 hours or 12,000 hours.
How to Get It Right:
The exact spec is in the operator’s manual — it varies by machine. But the general rule:
✔ Park on flat, level ground
✔ Lift the machine slightly using the boom and bucket
✔ Measure track sag in the middle of the upper run
✔ Most manufacturers spec 0.5″–1.5″ of sag, depending on the model
✔ Adjust the grease cylinder (or tensioner) accordingly
Do this weekly — or after operating in mud, snow, or extreme heat. Tracks expand and contract more than people realize.
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