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yes. just take the kingpin bolt off and pull out the bushings and the hanger
how long idoes it take the weather to change
5 seconds
no
For any type of bushings you will need a special tool to take them off the bushings are pressed in
15 or more seconds
The Impala has two bushings. One vertical which is the outer bushings, and the second one which is the horizontal (inner) bushing. Best thing to do is buy the bushings at rock auto. Vertical is like $18 and Horizontal is about $16. These bushings need to be pressed into the control arm so u have to take it to a machine shop...its probably charge 1 hour labor rate for both sides. U need a special tool to press out the old ones and insert the new ones. Removing the control arm is necessary.
bigger hammer
That would depend on the size of your trailer. In order to make sure it fits you should take measurements of your trailer. A standard queen sized mattress measures 60" by 80" so if you trailer is at least that long you should be fine.
I would recommend you replace the entire hinge and forget about repairing it. In my experience this is the best route to take.
Mostly on the wheels but also on the bushings because you have your whole body weight rubbing metal trucks against rubber bushings.
Completing the average trailer driver program will take about 9 months. This is due to the fact that you must have a certain amount of real life driving before you are lisenced.