Auxiliary tool for assembling fuel oil filter of fuel oil nozzle

The utility model discloses a fuel nozzle oil filter assembly auxiliary tool which comprises an integrally-formed fixing block, and a plurality of limiting grooves matched with a fuel nozzle are formed in the fixing block. The limiting groove comprises a flange surface limiting groove (1), an oil inlet limiting groove (2), an oil outlet limiting groove (3) and a shell limiting groove (4) which are communicated with one another; the shell limiting groove (4) is located in the middle of the fixing block. The oil inlet limiting groove (2) and the oil outlet limiting groove (3) are symmetrically distributed on the two sides of the shell limiting groove (4); a flange face limiting groove (1) is formed in the junction of the oil inlet limiting groove (2) and the shell limiting groove (4). According to the tool, the nozzle can be fixed, the situation that the nozzle is held unstably in the beating process is avoided, assembly is convenient, the success rate of assembly is increased, and the potential safety hazard t