| 摘要 |
PURPOSE:To facilitate air bleeding operation and to prevent residual of air in a cooling fluid passage of an engine by providing a filler hole of a cooling device on the engine side. CONSTITUTION:A cooling water passage 66 through which cooling water flows is formed on at least a cylinder head 55 of an engine 16, the cooling water passage 66 is communicated with a radiator 70 for circulation of cooling water between the cooling water passage 66 and the radiator 70. Also, a filler hole 87 opened and closed by a cap 88 is provided at the highest position of a piping 86 of the cooling water arranged from the cooling water passage 66 to the radiator 70. Here, the filler hole 87 is provided on the side of the engine 16. By this, the cooling water can be filled directly into the cooling water passage 66 of the engine 16, and residual of air at the part which requires cooling the most in all the flow path of the cooling water is prevented. Thus, efficiency of cooling is improved, and as no attention should be paid to air bleeding opera tion, the air bleeding operation can be carried out easily. |
