Backlash Inspection

Backlash Inspection
Special Tools Required
Universal Holder 07725-0030000

1. Remove the output shafts and differential case assembly.
2. Securely clamp the differential carrier assembly in a bench vise with wood blocks.
3. Thoroughly clean the ring gear and drive pinion teeth, and paint the ring gear teeth with Prussian Blue lightly and evenly.








4. Rotate the pinion three full turns forward and then backward to produce a contact pattern on the ring gear.





5. Measure the backlash of the ring gear.
^ Set the dial gauge tip at a right angle to the ring gear teeth.
^ Measure four points on the ring gear 90 degrees apart.
^ Backlash will be within the standard if at one point the ring gear backlash is within the standard, minimum measurement of 0.05 mm (0-0020 inch) or above and the difference between the maximum and minimum measurements do not exceed 0.07 mm (0.0028 inch). Both adjustment screws must be adjusted. For example; if you turn one adjustment screw one notch clockwise, you must turn the other adjustment screw one notch counterclockwise.