How to say “Loosen this bench vise a little so I can turn the pipe.” in Japanese

In Japanese

パイプの向(む)きを変(か)えたいから、この万力(まんりき)を少(すこ)し緩(ゆる)めてくれる？

Paipu no muki o kaetai kara, kono manriki o sukoshi yurumete kureru?