Excavator Operator Certification Exam Prep · Question
An excavator's tracks are noticeably loose, causing poor traction and increasing the risk of de-tracking. According to manufacturer guidelines, the track sag should be approximately 10-20 mm at the idler. What adjustment is required?
Track tension on excavators is typically adjusted by adding grease to a tensioning cylinder, which pushes the idler wheel forward to tighten the track. Tighteni
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Question: An excavator's tracks are noticeably loose, causing poor traction and increasing the risk of de-tracking. According to manufacturer guidelines, the track sag should be approximately 10-20 mm at the idler. What adjustment is required?
Answer options:
- Tighten the track shoes bolts.
- Increase the tension of the track springs. ✅ Add grease to the track tensioning cylinder.
- Adjust the final drive gear backlash.
Correct answer: Add grease to the track tensioning cylinder.
Explanation: Track tension on excavators is typically adjusted by adding grease to a tensioning cylinder, which pushes the idler wheel forward to tighten the track. Tightening track shoe bolts would not affect overall tension. Track springs may provide some tension but the primary adjustment is via the grease cylinder. Adjusting final drive backlash is unrelated to track tension.
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Question explanations
- During a final inspection of an excavator, prior to beginning work, an operator notices significant play in th
- An excavator operator is preparing to dig a trench in cohesive soil. To achieve maximum breakout force, what a
- Which control typically governs the arm (or dipper arm) movement for an excavator?
- What condition might require sloping or shoring of a trench less than 1.2 meters (4 feet) deep?
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