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Originally Posted by Blue-S
How does one clean the tensioners? Can the timing chains and guides/tension arms be replaced without complete engine disassembly? For example, on Mercedes engines it is possible (with the correct tools) to break the existing chain, temporarily link a new chain to it, bar the engine over manually to feed the new chain through, then connect the ends of the new chain permanently using a chain pin staking tool.
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Submerge the tensioner in clean engine oil & pump the plunger in & out to suck in the new oil & purge the old oil & hopefully any contaminants. This works better & easier if the oil is heated to 250 degrees & you "cook" the tensioners in the oil for several hours. The cams must be removed to replace chain or wearpads.