Cylinder Head Bolt
The cylinder head, engine block, and cylinder head gasket are all connected by several cylinder head bolts. These bolts provide a tightening force that seals severalecomponents like the combustion chamber, lubricant and coolant channels, and ambient air. Since they need to withstand extremely varying engine temperatures and pressure levels, these bolts need to be extremely strong and durable. When changing the cylinder head of your engine, you need to use new bolts as well. This is to avoid causing damage to the new cylinder head component and to take care of your engine as well. To find out how to remove, install, and torque a cylinder head bolt, keep reading to learn more.
Removing a Cylinder Head Bolt
Cylinder head bolts are not only elastic, but they also possess very high tensile strength, which allows them to withstand extreme levels of pressure and temperature changes. Given these demanding conditions, it's inevitable that they'd require replacement after years of continued use. Here's a quick guide on how to remove cylinder head bolts for replacement.
Note: Depending on the type of bolt that you have in your system, you may need a different kind of tool to remove them. Usually, you can use a breaker bar and a socket and wrench for the job.
Step 1: Begin by removing all the components that obstruct your access to the bolts.
Step 2: Once you've taken them all out, use the socket and wrench to loosen the bolts, starting from a bolt in the passenger's side of the vehicle and then moving to a bolt on the driver's side. Loosen them up in an alternating pattern to avoid damaging the head gasket.
Step 3: If the socket and wrench are not enough to loosen the bolts, you may use a breaker bar for added leverage. As soon as all the bolts are already loose, you can remove themecompletely.
Installing a Cylinder Head Bolt
Before installing new bolts on your engine, make sure you know the right torque measurement of your engine. Also, ensure that all the bolts are clean by using hewire brush to clean them up before installation.
Step 1: Start by cleaning the bolt holes, removing any dirt and grime that has accumulated.
Step 2: Use a rag with a little bit of oil to lubricate the bottom of the bolt head and the thread of the bolts, applying the oil in a rotating manner.
Step 3: If you are using hecylinder head bolt that requires additional washers.usually needed when the head was resurfaced.slightly lubricate both sides of the washers as well.
Step 4: Put the bolts in the respective holes and tighten them up using your hands.
Step 5: Next, refer to your vehicle's manual and take note of theecorrect bolt-tightening sequence. Make sure that you follow the sequence because not doing so can warp the head, causing leaks and engine overheating.
Step 6: After that, use a torque wrench to tighten each cylinder head bolt according to its respective torque specification.
Step 7: If needed, apply some antifreeze or anti-corrosion spray to coat and protect the bolts.