The CAT 420 — Caterpillar's answer in the 8-ton TLB class
For contractors who prefer the CAT brand, dealer network and residual profile, the 420 is the natural TLB choice. It is heavier, torquier and generally better on rough ground than a comparable 3CX, and it sits inside the Barloworld support pipeline that anchors most CAT ownership.
420D, 420E, 420F — which one?
The 420D is the entry point. Mechanical, well understood, cheap parts. Fuel burn is 20 to 30 percent higher than the F-series and the cab is dated. Suited to buyers with strong workshops.
The 420E brought the C4.4 ACERT engine and a materially better cab. This is the value sweet spot at roughly R 650k to R 850k for a well-serviced machine.
The 420F / F2 is the modern machine — updated hydraulics, best fuel economy, optional pilot controls and Product Link telematics. Long-hold buyers should target this generation.
What to check on a used 420
- Loader arm pins and bushings — play here is the first sign of a hard-worked machine.
- Transmission — test all forward and reverse gears, check for slip under load.
- Hydraulic response — fit a bucket and check for lift shudder or slow curl.
- Boom welds — repair welds near the pivot points indicate rock or demolition duty.
- Cab condition — a tidy cab is usually a proxy for a tidy machine overall.