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Looking through FMCSR 393.47, the only requirement I see in there is that the effective length of a slack adjuster on each end of an axle must be the same.
Yes there are slack adjusters on railroad cars. They work much like the automatic slack adjusters on large trucks, and do the same job
Loosen the axle nut and rotate the chain adjuster to the same position on both sides of the swingarm until you obtain the correct chain slack, then tighten the axle nut.
They all have to be the same size. They can be different brands but even then make sure the tires on the front axle are the same brand an the tires on the rear axle are the same brand. Do not mix brands on the same axle.
no they are different
It is ok as long as you have the same size on each axle. In other words you must have the exact same size tire on the front axle or the rear axle. Never mix sizes on an axle.
Yes - as long as the tyres on the same axle have the same tread pattern.
No. A tri-axle has one additional lift axle; a quad axle has two lift axles.
They are the adjusters on the rear drum brakes. There is usually a oval shaped hole on the rear of the backing plate where you can use a special adjuster screw or a large screwdriver to turn the adjustment star. You want to adjust them for a fair amount of drag without the wheel and tire mounted on it. 'After adjusting that way and after you remount the tires, , back the car up , in a straight line a few times to set them automatically and to the correct tension.
Both limp and slack can refer to lacking tightness or firmness. However, limp typically describes a lack of strength or vitality in something that should be firm or rigid, while slack often refers to something that is loose or hanging with excess material.
Yes
To check the rear axle ratio on your Suburban, you need to safely jack up the vehicle to get access to the the rear axle. Then there should be a metal tag on one of the bolts on the rear axle cover indicating the axle ratio. The ratio varies with different options and load capacities, so it's not the same for all Suburban's.