That's a 3-ring group for 4" bore, fits D320A.
Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.
Chapter Nineteen
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| Booleroo Centre, 54 Arthur St, Booleroo Centre SA 5482, AustraliaChapter Fifteen
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Antique Caterpillar
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Salem, OR 97301
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