Tape Stretches Track Life

September 28, 2010

Measure track sag to the grouser tip. If you measure to the shoe, you'll adjust chain tension too tightly.

The most controllable variable affecting undercarriage cost is track-chain adjustment, which requires measuring track sag accurately every day. Tight tracks wear up to three times faster than properly adjusted ones.

Most track chain should sag 2 inches, measured from a straight edge laid across the grousers to the grouser tip at the low point (check your operator manuals for each machine's specific recommendation). First let the machine roll to a stop. Then lay a straight edge over the grousers, and measure to the grouser tip.

To get a true reading, always measure and adjust chain tension under working conditions. Clean track, for example, will tighten up when mud starts packing in its sprockets.