Cat 236D3

Radial geometry with an unusually tall boom makes this the odd one out in Cat's small wheeled range, and the numbers are worth reading carefully because they are counterintuitive. It rates less than the cheaper vertical-lift 232D3 beside it, yet it lifts higher — 122.9 inches against 118.1 — and it moves substantially more oil. Buyers who compare only rated capacity and price conclude it is the worse machine, and for the work it is actually built for that conclusion is usually wrong.

The practical case rests on hydraulics, stability and driveline. Standard flow is 20 GPM at 39 hydraulic horsepower against the 232D3's 18, and H3 takes it to 30 GPM and 58 hp where the smaller machine stops at 26. Speed Sensitive Ride Control is standard on every configuration. The chain box is larger, which matters because drive chains are what fail on these machines rather than bearings — and that is also the warning. One example arrived at 885 hours with a broken chain wound around a locked rear wheel and chaincase oil that was both low and contaminated with water, which is the failure mode in a single sentence: neglected chaincase oil takes the chain with it. A Cat dealer technician's summary of the family was that they have been a pretty good machine, with the emphasis firmly on greasing — weekly at minimum, daily on bucket pins.

Genuinely digging-led work is the trigger — trenching, backfilling, grading, backdragging — but you still have to load trucks and run hydraulic attachments, a common combination that the usual radial machines serve badly. If almost all the work is lifting into trucks at height, the vertical 232D3 saves $5,315. If you want the current generation, the 250 is only about $5,300 above this machine but a whole size class up at 2,689 lb, so it is not a like-for-like swap. Price all three with the same hydraulic package and the same cab, because otherwise the quotes describe different machines — and on any used one, pull the chaincase inspection plug first.