CONSTRUCTION
A chain sub-assembly with an 8 mm (0.315 in.) pitch is used for the camshafts and a No. 2 chain sub-assembly with a 7 mm (0.276 in.) pitch is used for the oil pump assembly to make the engine more compact and maintenance-free.
The chain sub-assembly is lubricated by a timing chain oil jet.
The No. 1 chain tensioner assembly uses a spring and oil pressure to maintain proper chain tension at all times. The No. 1 chain tensioner assembly suppresses noise generated by the chain sub-assembly.
The No. 1 chain tensioner assembly is a ratchet type tensioner with a non-return mechanism.
To achieve excellent serviceability, the No. 1 chain tensioner assembly is constructed so that it can be removed and installed from the outside of the timing chain or belt cover sub-assembly.
A resin chain tensioner slipper and a No. 1 chain vibration damper are used to reduce weight.
| *1 | Chain Sub-assembly | *2 | No. 1 Chain Tensioner Assembly |
| *3 | Chain Tensioner Slipper | *4 | No. 1 Chain Vibration Damper |
| *5 | No. 2 Chain Sub-assembly | - | - |