A Fuel Injection Pump

Claims:1. A fuel injection pump (100), said fuel injection pump (100) comprising at least a camshaft chamber (115) and an inspection window (105), characterized in said inspection window (105) of said fuel injection pump 10 (100): - a hole (110) on said inspection window (105); - a conduit (200) fitted in said hole (110) on said inspection window (105), said conduit’s head (210) remains outside said inspection window (105); - a hollow passage (225) in said conduit (200) to facilitate pre-filling said 15 camshaft chamber (115) with oil. 2. The fuel injection pump as claimed in claim 1, wherein said conduit (200) is a retractable conduit (200). 3. The fuel injection pump as claimed in claim 1, wherein said retractable 20 conduit (200) comprising a first opening (220) of said hollow passage in said retractable conduit (200), said first opening (220) in proximity of said retractable conduit’s head (210). 4. The fuel injection pump as claimed in claim 1, wherein said retractable conduit (200) comprising a second opening (230) of said hollow 25 passage(225) in said retractable conduit (200), said second opening (230) opening up to said camshaft chamber (115) of said fuel injection pump (100). 5. The fuel injection pump as claimed in claim 1, wherein a mechanical seal (205) is fitted to said retractable conduit’s head (210). , Description:A fuel injection pump (100) comprising at least a camshaft chamber (115) and an inspection window (105), said inspection window (105) comprising a hole (110) and a retractable conduit (200) assembled in said hole (110). The retractable conduit’s head (210) remains outside said inspection window (105). 15 Said retractable conduit (200) also comprises a hollow passage (225) to facilitate pre-filling said camshaft chamber (115) with engine oil.