3
-
Chain guide (intake side)
4
-
Tensioner arm (exhaust side)
6
-
Hydraulic chain tensioner
The overhead camshaft is driven from the crankshaft by the timing chain.
The steel camshaft sprocket has 38 teeth and is produced by the "fine blanking" process which enables the flat design. The camshaft sprocket position is fixed by a guide lug to a slot in the camshaft. The timing mark is stamped into the face of the sprocket.
The sintered steel crankshaft sprocket has 19 teeth and is positioned by a woodruff key. The timing mark is stamped into the sprocket.
The single timing chain has 114 links. Chain and sprocket alignment is indicated by colored chain links.
The plastic chain guide and tensioner arm and are fixed to the cylinder block with one bolt each. The chain guide and tensioner arm reduce chain vibration and noise.
The hydraulic chain tensioner is operated by engine oil pressure.
Coolant Flow Control Housing
The coolant flow control housing is made of plastic and bolts to the rear of the cylinder head.
The ECT sensor is fixed by a clip to its mounting which is integrated in the coolant flow control housing.
WARNING:The cooling system must be de-pressurized before the retaining clip of the ECT sensor is removed.
NOTE:Install a new gasket if the original is damaged.
The gasket is made of rubber.