Disassembling tool and method for combined type rear oil seal of engine

Abstract

The invention discloses a dismounting tool and method for a combined rear oil seal of an engine, the dismounting tool comprises a boss positioning disc, a guide rod, a threaded ejector rod, an arc pull claw and a fastening screw, the boss positioning disc is provided with a guide hole, the center of the boss positioning disc is provided with a center threaded hole, the end part of the guide rod is screwed into the end surface of a timing gear, and the end part of the guide rod is screwed into the end surface of the timing gear. The boss positioning disc is in sliding connection with the guide rod through a guide hole, the threaded ejector rod is in screw pair connection with the boss positioning disc through a center threaded hole, the two arc pull claws are symmetrically arranged on the two sides of the boss positioning disc, the fastening screws penetrate through the arc pull claws to be screwed on the boss positioning disc, and the boss positioning disc is fixed on the boss positioning disc on the premise of no destructiveness. The combined type rear oil seal is convenient to disassemble, the disassembly difficulty is reduced, the disassembled combined type rear oil seal is intact and can be continuously used, and overhaul and maintenance of an engine are convenient. Operation is simple, and stability is good.

Description

technical field [0001] The invention belongs to the technical field of engine tooling, and in particular, the invention relates to a disassembling tooling and a method for a combined rear oil seal of an engine. Background technique [0002] In the process of engine assembly, in order to ensure the tightness of oil lubrication, an oil seal is provided between the engine timing gear and the flywheel housing. The traditional oil seal is screwed on the flywheel housing, but the sealing performance is poor. Now use as figure 1 The combined oil seal shown has better sealing performance and is more convenient and quick to install. However, the combined oil seal composed of the inner spring ring, the outer spring ring and the sealing ring is nested, due to the interference between the inner spring ring and the outer ring of the timing gear. The outer spring ring and the inner wall of the flywheel housing are connected by interference fit connection, which makes it difficult to disa...

AI Technical Summary

Problems solved by technology

[0002] During the engine assembly process, in order to ensure the sealing performance of the oil lubrication, an oil seal is provided between the engine timing gear and the flywheel housing. The traditional oil seal is screwed on the flywheel housing, but the sealing performance is poor.

Now use as figure 1 The combined oil seal shown has better sealing performance and more convenient and quick installation. However, the combined oil seal composed of the inner spring ring and the outer spring ring and the sealing ring is nested. Due to the interference between the inner spring ring and the outer ring of the timing gear Fitting connection, the outer spring ring is connected with the inner wall of the flywheel housing with interference fit, which makes it difficult to disassemble the combined oil seal and brings great trouble to the maintenance of the engine

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