Gear oil pump for forklift main pump

The gear oil pump for the forklift main pump comprises a front cover, a pump body, a rear cover, a wear-resisting side plate, a driving gear and a driven gear, the pump body, the front cover and the rear cover are positioned through positioning pins and sealed through outer sealing rings, and the end faces, facing the pump body, of the front cover and the rear cover are of plane structures. A first through type pin hole and a second through type pin hole are formed in the pump body, two positioning pins are arranged in the first through type pin hole and the second through type pin hole in a back-to-back mode respectively, one positioning pin is matched with a countersunk head pin hole formed in the front cover, and the other positioning pin is matched with a countersunk head pin hole formed in the rear cover. Positioning boss structures of the front cover and the rear cover are omitted, the machining process of the front cover and the rear cover is simplified, production efficiency is improved by 2-3 times,