What is the correct way to set backlash?
What is the correct way to set backlash?
Different backlash pattern markings—correct and incorrect. Setting backlash is done using a dial indicator to measure the free movement of the ring gear. A typical set of gears comes with a marking compound. This compound is used to show what the pattern actually is on the ring gear while adjusting the backlash.
How do you check backlash on gear mesh?
Proper setting of gears usually involves checking backlash and tooth contact pattern. Backlash can be checked using a dial test indicator applied to a tooth on one member of the mesh and moving that member back and forth while holding the other member still.
Where is the backlash setting on a car?
Once the pinion depth is properly set, the backlash needs to be adjusted and set. Some rear ends use adjusters that are located next to the differential carrier bearings, and others are adjusted by adding/removing shims. Finding the proper backlash setting can be found in a service manual for the vehicle you are working on.
Why do I need backlash on my rear end?
The purpose of backlash is to prevent the gears from binding. Lack of backlash may cause noise, overheating, or seizing and failure of the gears or bearings. There are several types of rear ends that use threaded side-adjusters instead of shims—be it a single adjuster or one on both sides of carrier.
Different backlash pattern markings—correct and incorrect. Setting backlash is done using a dial indicator to measure the free movement of the ring gear. A typical set of gears comes with a marking compound. This compound is used to show what the pattern actually is on the ring gear while adjusting the backlash.
What is the adjustment of backlash and pinion depth?
These adjustments are of backlash and pinion depth. The adjustment of backlash moves the contact patch lengthwise back and forth between the toe heel of the tooth. Moving the crownwheel nearer the pinion decreases the backlash, causing the contact patch to shift towards the toe portion of the tooth.
How does the adjustment of backlash work on a crownwheel?
The adjustment of backlash moves the contact patch lengthwise back and forth between the toe heel of the tooth. Moving the crownwheel nearer the pinion decreases the backlash, causing the contact patch to shift towards the toe portion of the tooth.
When do you change the tooth contact pattern?
A tooth contact pattern will appear and should be similar to the pattern shown in Illustration ‘C’. If the pattern is not in the approximate position shown, reset pinion depth and backlash to correct pattern. Pinion shims usually must be moved in .003 of an inch increments to notice a pattern change.
