Caterpillar TH580B

The Caterpillar TH580B is a high-capacity, rough-terrain telehandler and the largest model in Cat's original B-series telehandler lineup (TH220B through TH580B). It runs a Cat 3054E turbocharged four-cylinder diesel of 4.4 L displacement, rated at roughly 89-92 kW (120 hp) gross. Operating weight varies by configuration and source, from about 12,470 to 13,650 kg (27,500 to 30,100 lb), with a maximum rated load of 4,990-5,000 kg (11,000 lb). The B-series line was introduced in the early-to-mid 2000s; the factory manual for this TH580B covers serial numbers from TBJ00100 forward, and family parts compatibility spans roughly 2002 to 2012. Configuration options include a four-section boom reaching 17 m (56 ft) lift height and 12.7 m (42 ft) forward reach, three selectable steering modes (two-wheel, crab, and circle steer), a Cat Powersyncro four-speed-forward/three-speed-reverse power-shift transmission, and a hydraulic quick coupler with auxiliary hydraulics for work tools.

Caterpillar originally built the B-series telehandlers itself, with early production based in Leicester, England. In 2005 JLG acquired the design and tooling for Cat's telehandler line and signed a long-term agreement to keep building Cat-branded machines; production of B-series models such as the TH580B shifted to JLG's Belgium plant while Cat retained sales, warranty, and service through the transition. Because the TH580B shares its factory service and parts documentation with the rest of the B-series family, many wear items, filters, and fluid specs cross-reference across TH220B through TH560B, which keeps parts more available on the used market than a standalone model number would suggest. No single machine was branded as a direct successor; Cat's later C-series, D-series, and TL-series high-capacity telehandlers, built under the ongoing Cat-JLG alliance, now cover the segment this machine served. For buyers today, the TH580B remains a straightforward mechanical/hydraulic machine without the complexity of later Tier 4 emissions systems, which keeps upkeep predictable when the boom chains, wear pads, and final drives have been serviced on schedule.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.