How do you set pinion depth?
1. Pinion Depth – The distance from the face of the pinion gear to the centerline of the ring gear. This is adjusted by adding or subtracting shims to the inner pinion bearing.
Where do you measure pinion depth?
Most aftermarket gear sets have the required pinion depth stamped on the head of the pinion gear. This measurement is usually taken from the rear face of the pinion gear to the centerline of the ring gear. Some aftermarket gears use the front face of the pinion gear as the reference point, as shown in Figure 4.
What happens if you have too much backlash in differential?
This distance is application-specific* and is critically important on all differentials because insufficient backlash causes the gears to bind, while excessive backlash causes excessive mechanical wear. Note that both inadequate and excessive backlash can cause varying mechanical noises.
What does a loose pinion nut sound like?
Whirring… A “whirring” noise while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload. This condition is typically always diagnosed as a bad ring and Pinion gear.
How much does it cost to adjust pinion depth?
0.005” to 0.015”
When changing pinion depth, make large changes until the pattern is close to ideal. Consider 0.005” to 0.015” a large change and 0.002” to 0.004” a small change. Intentionally, make adjustments that move the pinion too far at first.
How do you measure backlash on ring and pinion?
Gently rock the carrier back and forth to measure your backlash. You’ll want to do this in three separate locations on the ring gear to check for runout. If the backlash is too tight, move the carrier away from the pinion by adjusting the carrier shim. If the backlash is too wide, adjust the carrier toward the pinion.
How is backlash adjusted?
The common way to control backlash of bevel gear meshes is to adjust the mounting distance (axial backlash) by adding shims. When adjusting the mounting distance, it is important to keep proper tooth contact in consideration of the gears and pinions in balance.
How does pinion Depth Affect rear end backlash?
Decreasing pinion depth also increases backlash and moves the drive pattern slightly towards the heel, and the coast pattern slightly towards the toe. Increasing pinion depth will also increase pinion-bearing preload unless the outer pinion shims are adjusted.
What is ring and pinion backlash?
Once you have installed and set the proper pinion gear depth with either a pinion depth gauge or by the pattern revealed when using a gear marking compound, it’s time to address backlash. Ring and pinion backlash refers to the amount of play between the gears.
What is pinion depth and why is it important?
Think of it as: How close the head of the pinion is to the center-line of the ring-gear. Proper pinion depth makes sure the pinion teeth mesh with the middle of the teeth on the ring-gear – between the top and the root.
What happens if you don’t set pinion depth before assembly?
This part is properly setting pinion depth and backlash prior to final assembly. If you don’t do this before you close everything up, you’re most likely going to eat those new gears and end up having to go through the whole process again. You may even end up having to replace the whole differential.