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About the Allis-Chalmers HD3

The Allis-Chalmers HD3 Industrial/Construction was manufactured between 1942 and 1968. Be sure to look for any serial number comments in the part fit notes. In some cases, the Allis-Chalmers HD3 Industrial/Construction parts you need depend on your serial number. Serial numbers include 1001 from 1960 models, 1250 from 1961, 3199 from 1962, 6001 from 1963, 6945 from 1964, 7890 from 1965, 8856 from 1966, 9483 from 1967, 9700 from 1968, 9949 from final. They also have mechanical contracting band brakes. The 3-point hitch is very reliable. It is also worth noting that the optional rear PTO runs at 540 rpms. The Allis-Chalmers HD3 has an open center hydraulics system with a 16.5 gal [62.5 L] capacity. The pump does the job pushing 15 gpm [56.8 lpm] fluids in the hydraulics system.

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