Renault crankshaft pulley replacement, made easy
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Our expert insights into crankshaft pulley replacement
What does a crankshaft pulley do?
The crankshaft pulley is mounted on the end of the crankshaft. Its purpose is to transmit mechanical power and torque through the pulley system to turn the drive belts that operate the engine accessories (alternator, air conditioning compressor, etc.).
What are the symptoms of a bad crankshaft pulley?
Below are the top three symptoms that could indicate you need to replace your crankshaft pulley:
Engine vibrations
Alternator failure - flickering headlights, car struggles to start
Rough engine idle
What happens when we do a crankshaft pulley replacement on your car?
Our certified mechanics will:
Check the condition of the crankshaft pulley.
If necessary, they will replace the crankshaft pulley.
Advise if any other related parts need to be replaced.
Test drive the car to check everything has been fitted correctly.
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What does a crankshaft pulley do?
The crankshaft pulley is positioned on the end of the crankshaft. It transmits mechanical power and torque through the pulley system which then operates the engine's accessories (alternator, air conditioning compressor, etc.) through the use of a rubber belt or system of belts.
The crankshaft pulley is also essential in ensuring other engine components operate in unison to allow the vehicle to run smoothly. Doubling up as an internal dampener, crankshaft pulleys also reduce the risk of damage to certain engine components as they reduce the vibrations caused as the engine runs.
The car crankshaft pulley may seem like a minor part in a vehicle, but it is actually a very important part and is vital in the smooth operation of a healthy car.
Renault
Groupe Renault is a French multinational automobile manufacturer, established over 120 years ago in 1899.
How popular is Renault in the United Kingdom?
This French marque has around 1.4million vehicles on the road in the UK today. Their numbers peaked between 2007 and 2008 at over 2million vehicles, yet have been on a slow decline ever since.
Sensibly priced options for middle of the road vehicles
Renault makes a wide-ranging selection of respectable vehicles.
As you’ll find with most manufacturers in today’s market, the cream of their crop lies with their SUV models. Other stand-outs are the RS models built for a much more fun driving experience and the electric models that are also sitting impressively in a steadily growing market.
Renault: a constant contender in all manner of motorsports
In the 1970s, Renault set up a dedicated motorsport division that went on to take the winners title in the Le Mans 24 Hours in 1978, with the Renault Alpine A442. They have been competing and achieving successes in both rallying and Formula One ever since.
Renault Formula One
Renault debuted their first formula one car (and team) at Silverstone in 1977; it was the first of its kind to include a turbo engine. The team continued until 1986 and shortly after, in 1989, they began to supply engines to the successful Williams-Renault car.
The Benetton team was renamed Renault F1 in 2002, and the team went on to win the constructors championship in both 2005 and 2006 with Spaniard Fernando Alonso at the wheel.
More recently, Renault powered the winning Red Bull Racing team in 2010 and returned to racing as a team in their own right, from the 2016 season onwards.
How often should a crankshaft pulley need replacing?
A crankshaft pulley can last the lifetime of your car without failing, however unexpected issues can occur which may lead to your pulley needing to be replaced. In general, crankshaft pulleys are not part of regular maintenance so shouldn’t have to be repaired or replaced often
The car crankshaft pulley may seem like a minor part in a vehicle, but it is actually a very important component and is vital in the smooth operation of a healthy car. Therefore if you experience any of the symptoms above you should have your car inspected by a mechanic.
What happens during a crankshaft pulley repair?
Our certified mechanics will:
Check the condition of the crankshaft pulley.
If necessary, they will replace the crankshaft pulley.
Advise if any other related parts need to be replaced.
Test drive the car to check everything has been fitted correctly.
What causes a crankshaft pulley to break?
When an engine has a bearing failure, this can cause issues for the crankshaft and the pulley tension. Similarly, if the belt tension is too tight or the auxiliary equipment has failed the pulley will also fail.
Most crankshaft pulleys also have a rubber element that is prone to deterioration as it is exposed to continuously changing conditions. If this wears out a replacement pulley will need to be fitted.
What are the symptoms of a failing crankshaft pulley?
Usually, there a few signs you can look for:
Engine vibrations
Alternator failure - flickering headlights, car struggles to start
Rough engine idle
Difficulty moving the steering wheel
Difficulty changing gears due to gearbox damage
How often should you replace your crankshaft pulley?
Generally a crankshaft pulley should last the lifetime of the vehicle, however wear and tear does occur so occasionally one may need to be replaced.
What happens during a crankshaft pulley repair?
Our certified mechanics will:
Check the condition of the crankshaft pulley.
If necessary, they will replace the crankshaft pulley.
Advise if any other related parts need to be replaced.
Test drive the car to check everything has been fitted correctly.
What is the average life of a crankshaft pulley?
A crankshaft pulley can last the lifetime of your car without failing, however unexpected issues can occur which may lead to your pulley needing to be replaced. In general, crankshaft pulleys are not part of regular maintenance so shouldn’t cause you too many issues.
Can you drive with a broken crankshaft pulley?
You should avoid driving with a failing crankshaft pulley as it can cause serious and expensive damage to your engine. If the pulley breaks and the engine continues to run, serious damage could be done to the crankshaft, which would be a very extensive and costly repair. Other belts and components riding on the pulley could also break or become damaged.
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