A Toothed Belt is a mechanical tool that transfers motion to the
camshaft from the crankshaft of a reciprocating internal-combustion engine and
sometimes it also transfers motion to some of the engine driven accessories. By
connecting crankshaft to the camshaft, it will keep the cams turning at the
same rate as the crank at a certain variable ratio. It will make sure the right
valves are opened at the right time every time a stroke is made by a piston.
So for simplicity let's just say
that piston connects to crankshaft, and crankshaft connects to camshaft, and
camshaft connects to valve.
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| Toothed Belt - 5M Section |
Toothed Belt is cheaper to manufacture than timing chains or gears,
it's also quieter when operated. A timing belt doesn't need lubrication. But
one disadvantage of timing belt is you need to replace it every certain
interval.
When the Toothed Belt slips just by one tooth, the engine stops operating.
In several cars it will produce costly damage especially to the pistons and
valves. When the timing belt drops or fails, you will not be able to start the
engine. If this happens you should not try starting the engine again.
How to Check Belts:
1. Turn off your engine.
2. Open the hood of your car.
3. Find the Toothed Belts; they are located on the very front of your engine.
If you have a rear wheel drive car, the front of your engine is usually
adjacent to the front bumper and the radiator. Otherwise if it's a front wheel
drive car then the front of the engine is often adjacent to the fender.
4. Note that there are 2 or more belts;
it depends on the car models.
5. Press lightly with thumb at
the belt's longest part between pulleys. Do this on each belt.
6. Find out the normal tension
for your belts. It's in the car's manual. Normally belts cannot have more than
one inch of "give" in both directions.
7. Evaluate those belts as you
press them. If the belt is cracked or can be easily pushed more than one inch,
then it's highly advised to replace with a new one.
To prevent damage and costly repair, a timing
belt should be replaced every 60,000 miles.
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