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To break it in and also to test and be sure that it can withstand a load.
A rear axle adjustment is also known as a rear axle alignment. The perimeter chassis of the car needs to be measured before a rear alignment is performed.
Preload is the amount the pinion bearings are squeezed together by the pinion nut.
If this helps the sailsbury axle of a cortina details are crownwheel and pinion backlash 0.004-0.008" pinion bearing preload 0.001-0.003" collapsible spacer length 0.453-0.461".
I had new tires installed by Firestone on my 99 Cobra and a axle on the left rear where I had excessive wear on the tire. After the installation I was told they could not align the left rear because there was not adjustment available. They contacted Ford and told me the adjustment could only be done by Ford. Apparently from what I have read there is no adjustment to the rear on the Cobra and the front is suppose to be aligned to the rear. I am going to call Ford and get their take.
Only if the rear axle is a drive axle.
Yes
Inside the rear axle.Inside the rear axle.
On the rear axle?
Top of the rear axleTop of the rear axle
it has no rear axle
Vehicles with front wheel drive have a straight rear axle meaning there is no gear housing in the rear axle. Vehicles that are rear wheel drive have a gear box in the middle of the rear axle to change the rotation of a drive shaft to turn the rear axle. If you look under a full size pick up truck rear axle you will see a large gear box (typically referred to as a pumpkin) in the middle area of the axle. That is the gear box differential.