OKIDATA ML320 Turbo Service Manual page 96

Verify the following.
(1) When the change lever is set at Friction position, all the pressure rollers shall be pressed to the platen.
(2) When the change lever is set at Rear or Bottom position, the gap between the platen and the pressure
roller at the rear side shall be 3mm. The front pressure rollers shall be pressed to the platen.
4-4-1 Rotation of the push tractor
Verify:
The tractor gear shall rotate smoothly when the change lever is set at Friction position.
4-4-2 Backlash between gears Approx. 0.05 to 0.11 mm