How to replace the timing chain on a Jaguar XJ8?
How to replace the primary timing chain on a Jaguar XJ8? First, take out the right hand bank primary chain. Then, detach the variable valve timing (VVT) solenoid and the bush carrier. Then, lodge the camshaft locking tool to the left hand bank camshaft and align the shafts as required.
What is the pivotted guide on a Jaguar XJ6?
Top left is the pivotted guide which maintains the tension on the chain when the chain tensioner is in place. The damper on the tension (right) side of the chain is straight and fixed. The chain is slack and has dropped in the picture, take care NOT TO TURN THE ENGINE in case it jumps a sprocket.
Do you need a timing belt replacement on a Jaguar?
Please advise! The main Jaguar dealer are telling me that I need a timing belt replacement, however, when I contacted the main dealer Stratstone from which the car was originally purchased from tells me that the car is chain driven and no need to change.
What causes a Jaguar camshaft timing chain to crack?
The tensioners tend to break after a period of time, causing the chains to jump and sometimes crack. In such a scenario, the best recourse is to check the engine for any abnormal noise on the initial startup as this is a sure indication of a failing tensioner. How to set a camshaft timing chain on a Jaguar?
How do you change the timing chain on a Jaguar?
First, take out the right hand bank primary chain. Then, detach the variable valve timing (VVT) solenoid and the bush carrier. Then, lodge the camshaft locking tool to the left hand bank camshaft and align the shafts as required. Next, unfasten the exhaust camshaft sprocket bolt and the intake VVT unit bolt.
Top left is the pivotted guide which maintains the tension on the chain when the chain tensioner is in place. The damper on the tension (right) side of the chain is straight and fixed. The chain is slack and has dropped in the picture, take care NOT TO TURN THE ENGINE in case it jumps a sprocket.
How is the chain on a Jaguar XJ6?
The damper on the tension (right) side of the chain is straight and fixed. The chain is slack and has dropped in the picture, take care NOT TO TURN THE ENGINE in case it jumps a sprocket. Looked at end-on you can clearly see the amount of wear on this tensioner. The new tensioner looked much better! this shows both secondary guides.
How to remove timing cover on Jaguar XJ6?
Disconnect the two large diameter water hoses and remove the pump and top hose to a place of safety. The preliminaries completed, you can now start removing the timing cover which is held on by a total of 19 bolts – see drawing – note that three of these holding the water pump in place are already removed.
Can a top chain tensioner be replaced on a Jaguars?
You MIGHT get away with just replacing the top chain tensioner which can be replaced without excessive dismantling. Firstly, Jaguars were not designed to be easy to repair? discover why the apparently simple task of checking the timing chains is far from simple.
What to do with chain guides on Jaguar XJ6?
Put rag in hole to avoid any possibility of anything dropping into the housing which would seriously upset your day. Remove the secondary chain tensioner held by two bolts (note wrong bolts in picture – they should be flanged head bolts M8 x 25mm – and are now!).
Why is my timing chain cracking on my Jaguar?
This could be due to a cracked timing chain tensioner and guide. The best way out is to inspect the plastic inside the valve covers for any crack. If so, replace the chains. Additionally, confirm if the noise is coming from the top front of the engine to repair, as needed.
How to replace the primary timing chain on a Jaguar XJ8? First, take out the right hand bank primary chain. Then, detach the variable valve timing (VVT) solenoid and the bush carrier. Then, lodge the camshaft locking tool to the left hand bank camshaft and align the shafts as required.
Put rag in hole to avoid any possibility of anything dropping into the housing which would seriously upset your day. Remove the secondary chain tensioner held by two bolts (note wrong bolts in picture – they should be flanged head bolts M8 x 25mm – and are now!).
You MIGHT get away with just replacing the top chain tensioner which can be replaced without excessive dismantling. Firstly, Jaguars were not designed to be easy to repair? discover why the apparently simple task of checking the timing chains is far from simple.
The tensioners tend to break after a period of time, causing the chains to jump and sometimes crack. In such a scenario, the best recourse is to check the engine for any abnormal noise on the initial startup as this is a sure indication of a failing tensioner. How to set a camshaft timing chain on a Jaguar?
What happens when the timing belt breaks on a car?
Interference refers to the fact the intake and/or exhaust valves occupy the same space as the pistons. The timing belt/chain keeps that from happening at the same time. If the timing belt or chain brakes, the valves and pistons will hit each other. Valves can bend and/or break and the pistons can be damaged.
Where is the secondary chain on a Jaguar?
Finally, remove the secondary timing chain from the VVT unit and the sprocket. Assemble the VVT unit, the exhaust camshaft sprocket and the secondary chain. Then, position the assembly to the camshaft.