Cat 320E L versus LRR: clearance, fronts and controls

320E LRR: shorter swing envelope, different front assumptions

The LRR's counterweight swings on a 2,080 mm radius; the conventional 320E L uses 2,830 mm. Reduced radius does not mean zero overhang. Caterpillar's North American brochure specifies a 500 mm overhang with the 790 mm shoes.

A track-width measurement alone cannot establish clearance beside a live traffic lane or wall. Use the swing envelope for that decision.

The same drawing distinguishes ground clearance, track gauge, overall track length and roller-centre distance. Earlier entries conflated those measurements. Ground clearance is 450 mm on the LRR; 2,380 mm is its gauge.

The 4,460 mm overall track dimension also exceeds the 3,650 mm roller-centre spacing. Both dimensions matter, but they describe different parts of the undercarriage.

North American minimum and maximum LRR masses use different equipment: heavy-duty versus extreme-service fronts, different counterweights and different shoe widths. A larger counterweight can accompany the compact tail; a short upper body does not guarantee a light transport load. Check which counterweight is installed before using a brochure minimum on a permit application.

The longer stick in the retained 320E L range table differs from the LRR's documented reach front. A deeper digging figure therefore cannot be attributed solely to the conventional tail. Establish the boom, stick and bucket combination first.

Otherwise a comparison would credit the upper structure with a difference created at the front linkage.

Regional editions change the control and rating descriptions

The European AEHQ6582-01 edition offers high-power and economy selections. The North American publication describes a standard mode as well. Do not diagnose an absent third selection from the model badge alone; establish which regional specification and software arrangement the excavator has.

The European power figure also names ISO 14396, while the retained American records distinguish gross and net standards.

Heavy Lift and boom regeneration serve different purposes. Heavy Lift raises hydraulic pressure while reducing engine speed for more controlled lifting. The electric boom-regeneration valve reduces pump demand as the boom descends; it is unrelated to cleaning an exhaust filter.

A service description saying only “regeneration problem” leaves the affected system unidentified.

The European cab monitor can display rear-camera images, and its shutdown setting allows an idle period to be selected before engine stop. During an inspection, distinguish a configured shutdown from a reported stall. Record the displayed settings and the circumstances of the event before calling it an engine fault.

The brochure establishes that the setting exists; it does not supply a diagnosis for an individual machine.