Reasons for Crawler excavator Tracks off:
1. Tensioner devices: butter is not enough, springs of tensioner ruptured.
2. Too much abrasion on Connecting pins.
3. The chain-protecting armor get damaged
4. Driven Gear/teeth get badly damaged.
5. Severe abrasion on the Guide Pulley.
No matter the dealer give you what kind of guarantee, we should double-check all the components of Used Excavator. Check carefully the hydraulic system, oil leakage, hidden corrosion or rust, or there are other signs that may cause problems. We should test drive thoroughly, try the overall functions, only if by personal operating of digging, lifting and loading we can know the real performance of excavator.
Before purchasing a brand-new excavator or a used excavator, we need to consider carefully about the practical working conditions.
The used excavator may be much more attractive when you are faced with big investment about hundreds of thousands, even hundreds of million for new excavator, from an economic point of view, this may be a good idea to buy a used excavator, but not necessarily always like this. (more…)