Four Wheel Logic

To replace a radiator, drain the coolant, swap the unit, refill, bleed air, then check for leaks and correct temperature.

To replace a wheel bearing, lift the vehicle, remove the hub assembly, swap the bearing, then torque everything to the maker’s specs.

To change a car battery, make the car safe, remove the old unit, install the new one, then tighten and test every connection.

To change a key fob battery, open the case, match and swap the coin cell, then close the housing firmly and test the lock and unlock buttons.

To change a turn signal light bulb, reach the housing, release the socket, fit a matching bulb, and test both indicators and hazards.

To change the headlight on most cars, open the hood, release the bulb from the housing, plug in the new bulb, and test both beams.

Changing the cabin air filter takes 10–20 minutes with basic tools once you find its location in your vehicle.

To change a car radiator, drain the coolant, remove hoses and mounts, fit the new unit, then refill and bleed the cooling system.

Changing drum brakes means lifting the car, removing the drum, swapping shoes and springs, then adjusting and testing the brake action.

To change power steering fluid, remove the old fluid from the reservoir, refill with the correct fluid, and cycle the steering until clean fluid circulates.