Monday 23 March 2015

On servicing the old 5 cylinder mercedes engines fond in pre 95 Hymers

If you don't have the original service book for the Merc chassis, you can find one on here or online. Your engine has a metal timing chain which should last almost for ever, and if it does get worn, will make a sound long before it gets serious - unlike the rubber belts in other engines that can snap and wreck your engine.
The most important thing is change the oil, religiously, every 10,000km or every year. Use the best oil - top quality synthetic diesel engine oil. Never skimp on oil changes.
Change or clean the air filter every year or so, depending on how many miles you have done. Same for the fuel filter - every few years, unless you spend a lot of time in a dirty fuel country - like Morocco or Azerbaijan......EU fuel is pretty clean.
That's about it for the engine - everything else will just carry on until it breakse, and just needs fixing - eg water pump or fanbelt. To give you an idea, I have the same engine, I have done 350,000km in 20 years, including trips to Africa Turkey and Russia. The engine has never missed a beat. I have had about 3 fanbelts, 2 alternators and a water pump. Brakes and exhaust you just have to keep an eye on - especially adjustment of the back brakes and the load balancing sensor. Again this depends on how many miles you do.
As for garages, find yourself a local traditional garage who does old fashioned engines and light commercials. Modern garages are all into plug in diagnostics - there are no electronics on these engines. Just keep looking till you find a mechanic, probably in his 50's or 60's who smiles when he sees your engine! having said that, anywhere can do an oil change. I pay about £50 for an oil change and filter.

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