Pair of Cletrac Crawlers Joins Old Iron Collection

By Bill Vossler
Published on May 20, 2010
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The 1951 Oliver-Cletrac HG in Leo Dahlberg's workshop.
The 1951 Oliver-Cletrac HG in Leo Dahlberg's workshop.
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Leo Dahlberg's 1951 Oliver-Cletrac HG-6 crawler needed basic restoration when he bought it.
Leo Dahlberg's 1951 Oliver-Cletrac HG-6 crawler needed basic restoration when he bought it.
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Leo Dahlberg's 1951 Oliver-Cletrac HG.
Leo Dahlberg's 1951 Oliver-Cletrac HG.

Adding a pair of Cletrac crawlers to his collection was a no-brainer for collector Leo Dahlberg.

After working in road construction for many years, he just loved crawlers. “I used to run construction and dozers and stuff, so it was pretty natural for me,” says the Wright, Minn., man. Though his 1951 Model HG and 1951 Model HG-6 are badged Oliver-Cletrac and one is green, they are simply Cletracs of a different color.

Major restoration

“In 2003, when a friend told me about an HG for sale at an auction, I went and bought it,” Leo says. The crawler needed work. “I had to winch it onto my lowboy,” he recalls. “It was pretty well worn out.”

Leo did most of the restoration himself but hired out work on the engine, which he had overhauled and rebored. Restoration of the tracks was the hard part, he says. “I rebuilt the old ones, doing a lot of welding with my wire-feed welder,” he says. “After that, I used a grinder to get them smooth. I also had to extend the grousers (the bars that stick down into the ground for traction) because they were pretty worn out.” He used a lathe to make bushings for the rollers.

He built a dozer blade for the crawler. “I bought the metal in Duluth, Minn., and a friend who has a big roller made it half round,” he says. “I designed the rest myself. The HG didn’t have a hydraulic pump, so I added live hydraulics off the end of the engine.”

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