Timing Chain Tensioners refit question
Discussion
You will only need to change the secondary chains if they worn or damaged. Kits of replacement split link chains and metal bodied tensioners are available and you can buy a chain breaking tool to cleanly break the old chain. Replacing the primary chain if that's FUBARD is a much bigger job
If you have to do any chain replacement it's essential to have the correct timing tools - at the minimum the crank locking peg and a cam locking bar before you start otherwise you'll never get the cam timing back.
If you are only changing the secondary tensioners then you can do so without any timing tools. All you need to do is secure the ex. cam drive chain to the ex. and in. cam sprockets with tie wraps in one position only to give maximum freedom of movement to preserve the valve timing, loosen in turn the ex. cam bearing caps then remove them and the camshaft. Make a location guide on paper or card to ensure the caps go back on in exactly the same position and orientation.
There will be just enough room to wriggle the old tensioner out and get the new one in with the ex cam lifted clear of the head with the chain still attached to it. You'll need a second pair of hands to help manouvre and support the cam and stuff clean rags down the timing cover so if you drop anything it won't fall into the depths of the engine.
If you have to do any chain replacement it's essential to have the correct timing tools - at the minimum the crank locking peg and a cam locking bar before you start otherwise you'll never get the cam timing back.
If you are only changing the secondary tensioners then you can do so without any timing tools. All you need to do is secure the ex. cam drive chain to the ex. and in. cam sprockets with tie wraps in one position only to give maximum freedom of movement to preserve the valve timing, loosen in turn the ex. cam bearing caps then remove them and the camshaft. Make a location guide on paper or card to ensure the caps go back on in exactly the same position and orientation.
There will be just enough room to wriggle the old tensioner out and get the new one in with the ex cam lifted clear of the head with the chain still attached to it. You'll need a second pair of hands to help manouvre and support the cam and stuff clean rags down the timing cover so if you drop anything it won't fall into the depths of the engine.
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