Originally posted by farmallmaniac
900 was made in 1957 only and they had a rotary injection pump. They went from a single plunger American Bosch to a multiple plunger Robert Bosch pump. The 1958 and 59 models had the inline injection pump
Seems we got side tracked on the main topic. As farmallmanic stated the 900 was only made in 1957 which replaced the Case 600. Case actually started producing the 600 in 57 and later that changed the sheetmetal and started the 900 in the same year.
In 1958 Case introduced the B series. The B series designation was intended to differentiate between the tractors of this series and any prior tractors with the same number designation.
The 900 became a 900B, which they was to be given a new injector pump. The 900B did not get the new pump until serial number 8141036 and after. The 900B's from serial 8120001-8141036 had the rotary. This means the 900B didn't get the inline pump till sometime in 1959.
I had always thought it was mid 1958 when the 900B got the new pump. According to the parts manual it was in 1959. Some please correct me on this. Serial number on the 59's start at 8140001. Hopefully I only confussed myself on this one.
caseman-d
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