2006 D3G LGP Track Tension and Undercarriage Concerns

[MikePhua]

Initial Situation
An owner of a 2006 CAT D3G LGP asked for input about his machine’s track tension and undercarriage condition. He was concerned about whether the tracks were too tight or too loose and wanted to know the best practice for adjusting them correctly.
Feedback on Track Tension
Several experienced operators chimed in, explaining that track tension on a low ground pressure (LGP) dozer is very important for both performance and undercarriage life. If tracks are too tight, they can wear out rollers, idlers, and bushings quickly. If they’re too loose, there’s a risk they could derail, especially when working on slopes or turning.
How to Check
Advice was given on the proper way to check tension: by lifting the machine slightly, rotating the track, and measuring the sag at the midpoint. Caterpillar typically specifies a certain amount of droop or sag, which can be found in the operator’s manual. Keeping the tracks clean, especially in muddy conditions, is also important because packed mud can tighten the tracks excessively.
Undercarriage Wear
Users discussed general undercarriage maintenance. The D3G LGP’s wider tracks can accelerate wear if tension isn’t correct or if the machine operates on abrasive ground. Greasing the tensioning system and inspecting the recoil springs were also suggested as routine checks.
Practical Tips
Some owners prefer running tracks slightly looser than the manual suggests when working in soft ground, to reduce wear. However, they warned to always stay within safe limits to avoid derailing.
Key Takeaway
Proper track tension is critical for the D3G LGP’s efficiency and longevity. Following the manual’s recommendations, inspecting tension regularly, and adjusting based on conditions will help maintain a healthy undercarriage and reduce repair costs in the long run.