There seems to be an error in my Bentley Manual Stock #VG92 on page 6-16, it says:
"An approximate measure of belt tension can be made without a tension gauge by twisting the belt by hand. At the center between the injection pump sprocket and the camshaft sprocket, if the belt can be twisted 45 degrees but no further, it is tensioned correctly."
Well there seems to be a large intermediate shaft pulley in that area and half way would just about be touching the pulley. Is this a mis-reference to the gasoline engine which has no intermediate shaft pulley??