Pinion Depth

PINION DEPTH

Special Tools:














PINION DEPTH VARIANCE

Ring gear and pinion are supplied as matched sets.





Compensation for pinion depth variance is achieved with select shims (3). The shims are sandwiched between the pinion head bearing cup (4) and axle housing.

If installing a new gear, note the depth variance number of the original and replacement pinion. Add or subtract this number from the original depth shim to compensate for the difference in the depth variances. The numbers represent deviation from the standard in thousandths of an inch. If the number is negative, add that value to the required thickness of the depth shims. If the number is positive, subtract that value from the thickness of the depth shim.

PINION DEPTH MEASUREMENT

Pinion depth measurement is taken with the pinion head and tail bearing cups pressed into the axle housing without the shim.





1. Press pinion head bearing cup into housing using Handle (1) and Installer (2).





2. Press pinion tail bearing cup into housing using Handle (1) and Installer (2).





3. Assemble Pinion Height Block (3), Pinion Head Bearing Cone (1), Screw (all these can be found in a Pinion Gauge Set such as ), and Pinion Height Gage Block (2). Install assembly into axle housing and through bearing cups.





4. Install pinion tail bearing and Cone (4). Tighten Cone by hand until 3.4 Nm (30 in. lbs.) of rotating torque is measured at Screw (5).





5. Install Arbor Discs (1).





6. Install Arbor Bar (1) from a Pinion Gauge Set such as.





7. Verify pinion depth setup is as shown.





8. Install Dial Indicator (1) to Scooter Block (2) ( from a Pinion Gauge Set such as ). Secure with set-screw (3).





9. Install Indicator/Block assembly to top of Pinion Height Block (1). Zero indicator on top surface.





10. Slide indicator probe off of height block and onto Arbor Bar (2). As indicator contacts Arbor Bar (2), indicator needle will rotate clockwise. Continue moving indicator probe to the crest of the arbor bar and record the highest reading.

11. Select a shim equal to the dial indicator reading minus 2.5 mm (0.09 in.). After shim installation, check the amount of pinion bearing preload, and adjust as required to achieve the correct turning torque.