The most obvious reason to jack up a car is to change a tyre, but other jobs, such as inspecting brakes, may also
require you to get under the car. It is important to observe the following safety precautions before you jack up the car:
Use the jack only to get a car off the ground. Never, at any moment, use a jack to hold a car in place!
block the wheels, to
prevent them from rolling
before jacking up a car. Use bricks, wooden wedges,
or metal wheel chocks to block the wheels at the end of the unraised part of the car.
If you are changing a tyre and you have nothing to block the wheels with, park near the curb with the wheels turned in. this may not keep you from getting hurt if the car rolls off the jack, but at least innocent motorists and pedestrians will not have to deal with a runaway driver- less vehicle!
Never change a tyre on a road or major highway. Call road service
or an automobile association such as the AA of Kenya for assistance. ensure you have also parked the car away from the road to avoid block- ing other road users. place some lifesavers on each side of the road to alert other drivers.
Always park a car on level ground before you jack it up. If you get a flat tyre on a hill and cannot coast to the bottom, park close to the curb, turn the wheels toward the curb, and block the downside wheels securely to prevent the car from rolling.
put the car in park, or in First if you have a manual transmission, and engage the parking brake before you jack up the car.
After ensuring that you have followed, the precautions proceed to jack up the car:
place the jack under the part of the car that it should contact when raised. If you are using jack stands, place them near the jack. If you place your jack incorrectly, you can damage your car. to find the proper place to position the jack for your particular make and model of a car, check your owner’s manual.
If you have a scissor jack, insert the rod or wrench over the knob, and then crank. If you have a hydrau- lic jack, place the handle into the appropriate location, and pump up and down. Use nice, even strokes, taking the jack handle from its low- est point to its highest point on each stroke to cut down on the labour involved.
If you are using a scissor jack, simply turn the crank in the oppo- site direction. If you are using a hydraulic jack, use the rod to turn the pressure release valve. the jack will do the rest of the work for you