I've been renting excavators for 12 years as we dont use them very often, but when we do, the bills are always pretty big. We occasionally dig about 30' deep and when we rent excavators, they're never brand new. Ive rarely had a piece of equipment break asides from a hose here or there. Ive been closely watching auctions an seeing 48K-70K lb machines with about 4000-6000 hours on them going for prices I think are pretty good. I've even gone so far as paying mechanics to go to the machines and make assessments of the machines before they sell so I can compare prices to the condition they are in. They check for leaking cylinders, take readings on the pressure the pumps are putting out, measure sprockets for the undercarriage, and just do an overall assessment of the machines. I've run excavators for years and own some telehandlers, bobcats, backhoes, and a mid size excavator.. But, Ive never owned a "big" excavator. Aside from what I listed above, what else should I be looking for so I don't get bit in the ass on a used sale? My use frequency does not warrant a brand new machine. Is there any secret or obvious industry knowledge when it comes to a larger excavator with 4000+ hours on it? Any help or advice (general or specific) is much appreciated. BTW-- Ive mostly been looking at Cat 320's and up, Kobelco SK210's and up. My ideal machine would weigh around 55K pounds with a quick coupler and wet kit.
Aside from what you have on your list.. just the obvious, engine blow-by, easy enough to check, check vent tube and remove oil cap while running. Turbo tightness, remove boot, wiggle shaft and visual on the oil leakage.. Its more than likely, a BIG NO on a compression test, but you might be able to make it a contingent..?? something like, sale final after engine inspection, within x amount of days..?? It sounds like you pretty well have it covered.. and know what you want.. that's 1/2 the battle.. Stay away from tier 4 engines.. way to costly to repair.. IF and that's a BIG IF, you can find someone who wont just throw parts at it.!! Guessing gets expensive FAST.
I've got a real nice 06 SK250LC. [email protected] if your interested. It's in SW Ga. no disappointments.