John Deere 450LC Excavator Operations & Test Shop Manual DCPA4. It is in good condition. DCPA4 is an internal code for our use. This item is an original. The item “John Deere 450LC Excavator Operations & Test Shop Manual DCPA4″ is in sale since Saturday, February 20, 2016. This item is in the category “Collectibles\Advertising\Agriculture\John Deere\Manuals”. The seller is “penndiana” and is located in Berlin, Pennsylvania. This item can be shipped worldwide.