How do you reduce diff backlash?
The simplest and most common way to reduce backlash in a pair of gears is to shorten the distance between their centers. This moves the gears into a tighter mesh with low or even zero clearance between teeth. It eliminates the effect of variations in center distance, tooth dimensions, and bearing eccentricities.
What is backlash in a diff?
NOTE: Differential backlash is somewhat analogous to valve clearances. The result is that gear teeth slam into each other on either the drive or coast sides of the ring gear teeth (depending on operating conditions) which is what creates the whining noises in differentials that we all love to hate.
How is total carrier preload calculated?
Yes there is an easy way to tell if you have the proper preload on the side bearings. Here is the formula. Total preload (in/lbs. with the unit totally assembled) minus the pinion bearing preload (with only the pinion assembly) multiplied by the gear ratio = side bearing preload.
Do you need to torque your preload and backlash?
To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. The following table contains the proper specifications for all popular axles. NEW! – Need help with your ring and pinion gear set up?
How to set differential backlash in Moss motoring?
When the bearings are dry, they tend to not want to rotate freely but when fitted and full of oil, the bearings lose their preload quickly. The carrier can then be fitted complete with crown wheel and the bearing shimmed up to set the backlash.
What should the backlash be on a Dodge 9.25?
Obtain backlash of 0.003-0.004 (0.076-0.102mm) with each adjuster tightened to 10 ft. lbs. (14 Nm). Tighten the differential bearing cap bolts. On 9.25″ diameter (100 ft. lbs.). Measure the ring gear backlash.
What’s the best way to tighten a front differential?
Make sure you always end with pushing the carrier towards the pinion, ie tightening the right side last because when the pinion is applying power it pushes away from the ring gear increasing the backlash. This is probably too late though…
How is the backlash set on an axle?
Once the proper pinion depth is set, so that the mesh pattern is centered on the faces of the ring gear teeth, the backlash is set by varying the shims that position the differential carrier, and thus the ring gear, from left to right or vice versa, in the axle housing.
To install your ring and pinion gears and/or differential correctly, it is critical to torque your bolts and set your preload and backlash correctly. The following table contains the proper specifications for all popular axles. NEW! – Need help with your ring and pinion gear set up?
When the bearings are dry, they tend to not want to rotate freely but when fitted and full of oil, the bearings lose their preload quickly. The carrier can then be fitted complete with crown wheel and the bearing shimmed up to set the backlash.
Obtain backlash of 0.003-0.004 (0.076-0.102mm) with each adjuster tightened to 10 ft. lbs. (14 Nm). Tighten the differential bearing cap bolts. On 9.25″ diameter (100 ft. lbs.). Measure the ring gear backlash.