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Message: <blockquote data-quote="ljbshop" data-source="post: 87653" data-attributes="member: 12520"><p>All B series are the same as the regular 40 series. What happened is they started making the 50 series and they cost more, so they stripped the extras off the 40 series, called it a B series, and sold it as a cheaper alternative. You will find no insulation behind the cab, no auxillary hydraulics, no headlights. Some machines have this, but those are optional add-ons, not standard on the B like they were on other machines. I believe the B was produced from 1990 to 1994. The differences are the hydrostatic drive pump has a splined input shaft instead of a keyed tapered shaft. Halfway through production at sn ****18000 they went from a vane type hydraulic pump to a gear type hydraulic pump, and the chaincase, drive motors, and axles went to the 50 series design. These late Bs use 50 series drive motors, axles, seals, and bearings. Also has a 50 series quick attach on it.</p></blockquote><p></p>