Difference between revisions of "DV20 Head Gasket"
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And the Cylinder Head. The grey material on both is the remains of the old head gasket. This must be completely removed by scraping with a piece of plastic. An old credit card works very well. | And the Cylinder Head. The grey material on both is the remains of the old head gasket. This must be completely removed by scraping with a piece of plastic. An old credit card works very well. | ||
| − | Before you start scraping the engine block put some rag or kitchen roll into the gantry to prevent as much debris as possible from entering the sump. | + | Before you start scraping the engine block put some rag or kitchen roll into the gantry on the right to prevent as much debris as possible from entering the sump. |
Revision as of 19:08, 30 April 2019
If you need to replace the head gasket these steps will help you.
Firstly do what you can to drain down the cooling system. If you have a vacuum extraction pump you may be able to extract the water from the T pipe behind the flywheel.
Remove the rocker cover. Undo the oil feed banjo on the side of the rocker bracket. Remove the plastic hose which goes to the air filter intake. Remove the rocker bracket by undoing it's two retaining nuts. You should now be able to lift the rocker bracket from the head.
Undo the the head nuts. The nuts should be undone in pairs. So looking at the engine head from the flywheel undo top left and bottom right, top right and bottom left. Do the same with the 4 inner bolts leaving the central one till last.
Once you have undone the the nuts and removed the washers put them on a piece of paper so they remain in the same sequence and can be replaced in the same order when you come to re-assemble the head.
You can now remove the valve rods which must be labelled so they go back in the same order.
The engine block.
And the Cylinder Head. The grey material on both is the remains of the old head gasket. This must be completely removed by scraping with a piece of plastic. An old credit card works very well.
Before you start scraping the engine block put some rag or kitchen roll into the gantry on the right to prevent as much debris as possible from entering the sump.
