How to diagnose and replace overhead cam timing chains?
Place the drain pan under the radiator drain. Drain the cooling system. Place a block of wood on the jack and support the engine under the oil pan. Remove the front engine mount.
Where is the camshaft on an overhead cam engine?
Some engines have the camshaft on the cylinder head. These engines are called overhead cam (OHC) engines because the camshaft is on top of the cylinder head. OHC engines can have either a single camshaft (SOHC) per head or one for the intake and another for the exhaust valves (DOHC).
What kind of timing chain do I need for an OHC engine?
OHC engines can have either a single camshaft (SOHC) per head or one for the intake and another for the exhaust valves (DOHC). Timing chain kits for engines with overhead cams differ from engine to engine. The design does require extra attention to detail and often quite a bit more work and more parts to install than the cam-in-block design.
Where are the timing components located in an OHV engine?
Many OHV engine designs have the camshaft housed within the engine block and use lifters, pushrods and rocker arms to activate the valves in the cylinder head. Generally, the engine timing components are not included in the removal of the cylinder head, but if these components are removed, they must be installed in exactly the same order.
What kind of valve timing does a camshaft have?
This camshaft has VVT (variable valve timing ) and MDS ( multiple displacement system). The crank sensor for the VVT motor has 58 notches instead of the 32 notches that were used on the original engine that had NGC.
Many OHV engine designs have the camshaft housed within the engine block and use lifters, pushrods and rocker arms to activate the valves in the cylinder head. Generally, the engine timing components are not included in the removal of the cylinder head, but if these components are removed, they must be installed in exactly the same order.
Where is the head gasket on a 4 cylinder engine?
The cylinder head gasket is a seal located between the engine block and cylinder head assembly. An in-line engine design will have one cylinder head as the cylinders are arranged in a straight line along the engine block. This is true for many 4, 5 and 6 cylinder engines.
When to change head gasket on BMW Pelican?
The line by the yellow arrow will match up with the boss in the engine block (blue arrow) when the engine is at TDC for cylinder number 1 and cylinder number 6. Check the arrow on the exhaust camshaft sprocket shown in Photo 5—it should only pointing upward, not downward, when the engine is at TDC for cylinder number 1.