Your excavator's manufacturer specifies a track sag of 150 mm when measured between the idler and the front carrier roller. You measure a sag of 200 mm. What does this indicate and what action should be taken?

Question: Your excavator's manufacturer specifies a track sag of 150 mm when measured between the idler and the front carrier roller. You measure a sag of 200 mm. What does this indicate and what action should be taken?

Answer options:

• The track tension is too tight; release some grease from the tensioning cylinder. ✅ The track tension is too loose; add grease to the tensioning cylinder.
• The track tension is optimal for soft ground conditions; no action required.
• The track requires replacement as it has stretched beyond repair.

Correct answer: The track tension is too loose; add grease to the tensioning cylinder.

Explanation: A sag of 200 mm when 150 mm is specified indicates the track is too loose. To correct this, grease should be added to the track tensioning cylinder to increase tension. This ensures proper track engagement and prevents de-tracking, aligning with manufacturer specifications.