Fig. 12 Cylinder Head Oil Lubrication System—Left Side
1 – CAM JOURNALS
2 – OIL FEED TO CAMSHAFT (SECONDARY) CHAIN
TENSIONER
3 – LASH ADJUSTER BORES
4 – OIL FEED FROM BLOCK
5 – VENT HOLE
6 – ACCUMULATOR
FROM: TO:
Left Cylinder Head Oil Inlet Gallery (intake side of
head)
Oil Gallery and Accumulator – Rear of Head*
Oil Gallery and Accumulator – Rear of Head* 1. Exhaust Camshaft Oil Passage
2. Intake Camshaft Oil Passage
Left Exhaust Camshaft Oil Passage 1. Left Exhaust Camshaft Journals
2. Hydraulic Valve Lash Adjusters and Rocker Arms
3. Left Camshaft (Secondary) Chain Tensioner**
Left Intake Camshaft Oil Passage 1. Left Intake Camshaft Journals
2. Hydraulic Valve Lash Adjusters and Rocker Arms
* When oil reaches the back of the cylinder head, the oil gallery feeds oil into an accumulator chamber that is
located towards center of the head. The accumulator chamber is closed off with a pressed in core plug that has a
small orifice to act as a vent. Oil then travels down at a 45 degree angle from the accumulator into two passages,
one for the intake and one for the exhaust side of the cylinder head.
** The secondary camshaft chain tensioner is the last component to receive oil on the left cylinder head.
LH 2.7L ENGINE 9 - 11
DESCRIPTION AND OPERATION (Continued)
To Next Page
Loading...
Need help?
General
