A cambelt or timing belt is a very crucial rubber timing belt that keeps the engines moving parts timed correctly.
Fan Belt
(Pictured above is image of typical components replaced when changing cambelts.)

Some engines run 2 belts, a timing belt and a balance shaft belt.

When a cambelt breaks, the valves stop turning and the crankshaft doesn’t, normally resulting in the engines pistons coming up and hitting the valves, causing major engine damage.

Most manufacturers recommend cambelt replacement every 80 - 100,000km, or 5 years.
While replacing the cambelt it is recommended to replace the waterpump, idler and tensioner bearings, oil seals, and in some cases a hydraulic tensioner.

"It makes sense to replace these parts once inside as they have done the same mileage as the cambelt, and can often be the cause of premature cambelt failure."

In some cases the fanbelts, or drive belts will also need replacing. After fanbelt/drive belt replacement, it is common for a readjustment due to stretching, causing a squealing noise, usually when cold.

Any readjustment is done
on the spot, free of charge.