Deere's big-class excavator — same priorities as any 35-tonne machine: undercarriage, hydraulics, and final drives, verified by measurement and samples.
The 350G is John Deere's production-class excavator and lives a hard digging life. As with any large excavator, the undercarriage and hydraulics carry the value, and cycle times plus oil samples reveal the condition a demo won't.
The largest wear cost on the machine.
CHECK Measure wear and estimate remaining undercarriage life.
Wear shows up as slow, weak, or drifting functions.
CHECK Time cycles, test for drift, and check pressures.
Final-drive and swing wear cause noise and leaks.
CHECK Listen while tracking and swinging and check for leaks.
Cracks, re-welds, and pin wear reveal hard use.
CHECK Inspect welds, pivots, and pin play.
Blowby and after-treatment health vary.
CHECK Check blowby, sample oil, and verify regen.
Heavy-duty diagnostic laptop with OEM adapters & software · Hydraulic pressure test kit with assorted fittings · Undercarriage wear gauges · Pin & bushing wear measurement tools · Ultrasonic thickness gauge for structural steel & buckets · Infrared thermometer / thermal camera · Oil & fluid sampling kit for lab analysis · Digital borescope …
See the full Heavy Equipment Inspection tool kit →
Pre-tagged for the John Deere 350G Excavator (All series).