Secure dial indicator to stud and place indicator pin against accessory drive gear tooth.
Rotate gear to right as far as it will move to take up backlash. Hold gear in that position.
Rotate gear to left as far as it will move.
Read backlash on indicator.
Replace accessory drive gear if backlash less than 0.0045 in. (0.1143 mm) or more than 0.0105
in. (0.2667 mm).
Install oil pump.
ENSURE OIL PASSAGES IN PUMP AND CYLINDER BLOCK MOUNT PAD ARE
OPEN. BLOCKED PASSAGE WILL RESULT IN RAPID ENGINE FAILURE.
Install new mount gasket on oil pump.
Install pump, meshing its drive gear with accessory drive gear.
Secure oil pump with capscrews.