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Jack up the vehicle on one side. mark the drive shaft with a piece of chalk or tape a piece of string to the drive shaft, at a specific location, say at the point closest to the ground. Also mark the tire as well so that you can determine exactly how many revolutions you turn the wheel. If you don't use the string method, and simply mark the drive shaft, you'll need someone else to count how many rotations the drive shaft makes while you count the number of times the tire is turned.
If you just need a good estimate, turn the wheel exactly 2 times. Write down how many revolutions and partial revolutions the drive shaft turned, i.e. 4.3 or 3.7 or 4.5, etc. This should give you a good enough estimate to determine which gear ratio you have once you consult a dealership as to which possible gear ratios exist for that model vehicle. If you don't want to call a dealership, etc, you can get the EXACT ratio simply by turning the wheel 20 times (instead of 2), and then dividing the drive shaft revolutions by 10.
Why? Because normally one would turn the tire 10 times, and then divide the result by 10, but if the differential is an "open differential", meaning each tire can turn independently of the other, then the internal gears compensate when only one tire turns, and it takes twice as many tire revolutions to get the ratio, hence 20 turns, even though you're dividing the drive shaft revolutions by 10.
For example, let's say you turn the wheel 20 times and the drive shaft turns exactly 43 times. Then you have a 4.3 gear ratio because 43 / 10 is 4.3.
Hope this answered your question, and good luck!
What else can I help you with?
Why does my car jerk while backing up?
check your parking brake or check the ring and pinion in the rear end
How do you change a rear pinion bearing on a 1999 Dodge 1500 RAM 4X4?
remove rear drive shaft from vehicle.remove large nut ( pinion nut) at front of diff, which is generally hidden when driveshaft is in place.with a bearing puller remove pinion bearing, replace with new one. install new pinion seal. reinstall pinion cover and pinion nut. tighten to specified torgue.reinstall driveshaft check diff oil for proper amount
When to change a rack and pinion?
Change a rack and pinion when they begin to show signs of wear; check on them every few months. Modern racks and pinions last over three years.
How do you replace the pinion shaft seal on your F-350 dually?
to replace pinion shaft seal you need to drop the drive shaft from the rear end then with large socket remove pinion nut from front of yoke remove yoke remove old pinion seal install new pinion seal reinstall yoke and pinion nut to specified torque re install drive shaft note now is the time to check and see if U-joints need replacing
How do you replace the pinion shaft seal on your F 350 dually?
to replace pinion shaft seal you need to drop the drive shaft from the rear end then with large socket remove pinion nut from front of yoke remove yoke remove old pinion seal install new pinion seal reinstall yoke and pinion nut to specified torque re install drive shaft note now is the time to check and see if U-joints need replacing
What does thumb through that check mean?
Counting money!
Your steering wheel was jerking back and forth for about a week Can this be due to bad tires?
check powering steerimg pump, or check rack and pinion. 65;
What are the release dates for 17 Kids and Counting - 2008 Josh and Anna Check In?
17 Kids and Counting - 2008 Josh and Anna Check In was released on: USA: 21 February 2012
How do you change a pinion bearing?
To change a pinion bearing, first, remove the driveshaft and differential cover to access the differential assembly. Then, use a suitable puller to remove the pinion gear and bearing from the housing. Replace the old bearing with a new one, ensuring it's properly seated, and reassemble the components, including adjusting the pinion depth and backlash as needed. Finally, refill the differential with the appropriate lubricant and check for proper operation.
How do you find gear ratio 2003 silverado?
To find the gear ratio of a 2003 Chevrolet Silverado, you can check the vehicle's RPO (Regular Production Option) codes, which are typically located on a sticker in the glove compartment or on the driver's side door jamb. Look for the code that corresponds to the axle ratio (e.g., GU6 for a 3.42 ratio). Alternatively, you can calculate the gear ratio by counting the number of teeth on the ring and pinion gears in the differential and dividing the ring gear teeth by the pinion gear teeth.
What causes a clunking noise in the front suspension of a 1997 continental?
check rack and pinion. sounds like it needs to be replaced.
How do you determine the rear axle ratio 2003 F-150?
check for the data tag on the rear diffrental cover if not there you can jack up the truck make a mark on the pinion flange and one on the axle flange, lugnut or tire what ever will work for a refrence. turn pinion one turn while counting number of turns on axle end. the axle end number will be the gear ratio like 2.73 or 3.55 and so on. you can also look at the vin tag and use a brake down of the vin to determine the ratio
