Terex put the Titan into service with Kaiser Steel at its iron mine at Eagle Mountain, California, in January 1975. The Titan experienced frequent downtime, but hauled approximately 3.5 million tons of earth over the course of its four years of service at the Eagle Mountain mine.

In late 1978, the Titan was sent to Kaiser Steel's mine at Sparwood, British Columbia, Canada. The mine was acquired from Kaiser Steel by B.C. Resources in 1980.[9] When the mine was subsequently acquired by Westar Mining in 1983, the Titan was repainted from its original Terex lime green livery to Westar Mining's blue and yellow livery. Shortly after, Westar Mining purchased the Titan from General Motors for US$200,000 ($540,000 today) and $1 million of spare parts ($3 million today). During Westar Mining's ownership, the Titan had an uptime rate of more than 70% and regularly hauled loads exceeding 350 short tons (320 t). Westar Mining retired the Titan from service in 1991.
After acquiring the Sparwood Mine in late 1992, Teck Corporation offered the Titan for preservation as a public monument in 1993. The Sparwood, British Columbia Chamber of Commerce completed a fund raising effort, restored the Titan, and promotes it as a tourist attraction. The Titan is on static display off Highway 3 in Titan Park, 126B Aspen Drive, Sparwood, British Columbia, Canada] Although the 3319 "Titan" was restored, the engine has been removed.

The Titan played a starring role in a 1977 Terex television commercial [alongside golfing great Jack Nicklaus. The commercial opens with Nicklaus standing in the loaded bed of the Titan, hitting golf balls, and ends with a panorama of Nicklaus standing amidst several of Terex' thencurrent products.