A real workshop example from AutoSavvy Mechanical in Noosaville

When people think about having a water pump replaced or an oil leak repaired, it can sound like a relatively straightforward mechanical repair.

Sometimes it is.

But on some vehicles, gaining access to the components that need to be repaired can be a substantial part of the job.

The 2013 Mercedes-Benz Vito 113 CDI pictured here is a good example.

This Vito came into AutoSavvy Mechanical in Noosaville with two separate problems: a leaking water pump and an oil leak from the oil cooler/filter housing area.

What makes this repair particularly interesting is what was required to gain proper access to the components.

Rather than simply reaching in from above and replacing a component, our technician Matt has removed the front section of the vehicle to create the access needed to carry out the repairs correctly.

This is the sort of job that demonstrates why mechanical experience, proper diagnostic skills and an understanding of how different vehicle systems are assembled can be just as important as having the right tools.

A leaking water pump should not be ignored

The water pump is a critical part of the engine’s cooling system.

Its job is to circulate coolant through the engine and cooling system so that the engine can maintain the correct operating temperature.

When a water pump begins leaking, it is more than just an inconvenience.

A coolant leak can gradually become worse, and if enough coolant is lost, the engine can overheat. An overheated engine can potentially result in much more serious and expensive damage.

In this Mercedes-Benz Vito, the water pump was showing signs of coolant leakage and needed to be replaced.

Finding the leak is only part of the job.

The technician also needs to consider where the coolant is coming from, whether surrounding components have been affected and what access is required to remove and replace the faulty component properly.

The oil cooler and filter housing has its own problem

At the same time, this Vito has an oil leak from the oil cooler/filter housing area.

Oil leaks can sometimes be difficult to identify because oil can travel across the engine and surrounding components before eventually appearing at the lowest point.

That means simply looking at where oil has accumulated does not necessarily tell a mechanic where the leak started.

A proper inspection involves identifying the source of the leak rather than simply replacing whatever component happens to be covered in oil.

In this case, the oil cooler/filter housing requires attention as part of the repair.

Having two separate leaks on the same vehicle also makes a thorough inspection particularly important. The technician needs to understand which components are responsible for each leak and what needs to be removed to gain safe and practical access.

Why has so much of the front of the Vito been removed?

This is the part of the repair that may surprise many vehicle owners.

Looking at the photograph, it may appear that the vehicle has been dismantled to an extraordinary degree just to replace a water pump and repair an oil leak.

There is, however, a very good reason.

Modern vehicles are tightly packaged. Engine bays contain cooling systems, air-conditioning components, electrical wiring, hoses, pipes, sensors, engine accessories and other equipment in a relatively confined space.

On some vehicles, access to particular engine components can be extremely restricted.

Removing the front section gives the technician considerably better access and working room.

That can allow the repair to be carried out properly rather than attempting to work around components in a cramped space.

It also provides the technician with an opportunity to inspect components that may otherwise be difficult to see.

This is where experience matters

Not every workshop will approach a job like this in exactly the same way.

That doesn’t necessarily mean one workshop is better than another. Different workshops have different equipment, experience and areas of expertise.

However, there are repairs that require a technician to be comfortable working on a wide range of systems and vehicle designs.

At AutoSavvy Mechanical, our technician Matt has the experience and knowledge required to tackle jobs such as this Mercedes-Benz Vito repair.

The ability to work on a vehicle like this is not simply about knowing how to replace a water pump.

It involves understanding how the vehicle is assembled, knowing how to gain access to the required components, understanding the cooling and lubrication systems, correctly identifying the source of leaks, safely removing and refitting components, and ensuring everything is correctly reassembled afterwards.

That broader mechanical knowledge is extremely valuable.

A major repair is also an opportunity for a thorough inspection

One of the benefits of having significant access to an engine bay is that the technician can see components that are normally hidden.

With the front of the Vito opened up, areas that are normally difficult to inspect become much more accessible.

This can allow a technician to look for things such as:

• Deteriorated hoses
• Coolant residue or staining
• Oil contamination
• Damaged wiring
• Worn or damaged pulleys
• Belt condition
• Cracked plastic components
• Leaking seals
• Corrosion
• Damaged connectors
• Signs of previous repairs
• Components that may require attention in the future

Not every problem needs to be repaired immediately.

But identifying a developing problem while the vehicle is already being worked on can give the owner the opportunity to make an informed decision.

Sometimes the most valuable thing a mechanic can do is find a small problem before it becomes a major one.

Why we believe inspection is such an important part of servicing

This is one of the reasons AutoSavvy Mechanical places so much emphasis on properly inspecting vehicles.

A car service shouldn’t necessarily be viewed as simply changing the oil and filters and handing the keys back.

A vehicle is a collection of mechanical, electrical and safety systems that wear at different rates.

Some problems are obvious.

Others are not.

A worn suspension bush might be difficult to see from above.

A small coolant leak might only become visible when the engine is warm.

An oil leak might be hidden behind another component.

A hose can look acceptable from the outside while deteriorating internally.

A technician who takes the time to inspect the vehicle thoroughly, including from underneath when it is safely on the hoist, has a much better opportunity to identify these developing problems.

That is where we believe real value in vehicle servicing comes from.

The importance of doing the job properly

There is often a temptation when repairing a vehicle to focus only on the faulty component.

The water pump is leaking — replace the water pump.

The oil cooler housing is leaking — replace the housing.

But good mechanical repair involves looking at the bigger picture.

Why did the component fail?

What condition are the surrounding components in?

Is there evidence of another problem?

Are there hoses, seals, belts, wiring or other components that should be inspected while access is available?

Has the vehicle been repaired correctly in the past?

Are there signs of another developing fault?

These questions are particularly important on older vehicles, where age and kilometres can affect many components at the same time.

AutoSavvy Mechanical — broad mechanical knowledge matters

This Mercedes-Benz Vito is just one example of the wide variety of vehicles and repairs that come through our Noosaville workshop.

Our technicians work on a broad range of makes and models, from everyday passenger vehicles and commercial vans through to European vehicles with more complex mechanical and electronic systems.

We don’t believe a mechanic should only be able to perform routine servicing.

A good workshop also needs the ability to investigate problems, understand how systems interact and take on more involved repairs when the vehicle requires it.

The photograph accompanying this article is a real example from our workshop.

It shows the extent to which a vehicle sometimes needs to be opened up simply to gain proper access to the components requiring repair.

Behind every repair is a process of diagnosis, planning, disassembly, inspection, repair and careful reassembly.

That’s the work that isn’t always visible to the customer.

Looking after your vehicle before a small problem becomes a big one

A leaking water pump or oil cooler housing might initially appear to be a relatively minor problem.

But leaks rarely improve by themselves.

Coolant loss can lead to overheating, while oil leaks can worsen and contaminate surrounding components or eventually result in insufficient oil levels.

The earlier a problem is identified, the more options the vehicle owner may have.

That is why we encourage vehicle owners to have their cars properly inspected and serviced rather than waiting until a warning light appears or a vehicle breaks down.

At AutoSavvy Mechanical in Noosaville, our approach is to look beyond the immediate complaint and consider the condition of the vehicle as a whole.

Because sometimes the most important part of a repair is not simply fixing what has already failed.

It is finding out what else needs attention before it fails too.

Need your Mercedes-Benz, European vehicle or other car inspected or repaired?

AutoSavvy Mechanical is an independent mechanical workshop in Noosaville on the Sunshine Coast, servicing a wide range of vehicles and carrying out everything from routine servicing and maintenance to diagnostics and more involved mechanical repairs.

If your vehicle has a coolant leak, oil leak, warning light, unusual noise or another problem that needs investigating, our experienced technicians can assess the vehicle and explain what needs to be done.

AutoSavvy Mechanical — thorough inspections, accurate diagnosis and quality mechanical repairs.