ENGINE UNIT


  1. CONSTRUCTION


    1. Both the primary and secondary timing chains use roller chains with a pitch of 9.525 mm (0.375 in.).

    2. A chain tensioner is provided for each primary timing chain and secondary timing chain in each bank.

    3. Both types of chain tensioner use a spring and oil pressure to maintain proper chain tension at all times. They suppress noise generated by the chains.

    4. The chain tensioner for the primary timing chain is a ratchet type with a non-return mechanism. Furthermore, an oil pocket creates oil pressure when the engine is started, and simultaneously applies oil pressure to the chain tensioner. This prevents the timing chain from flapping and reduces noise.

      A019QKWC01
      *1 Chain Tensioner (Secondary) RH *2 Ball
      *3 Ball Spring *4 Main Spring
      *5 Plunger *6 Chain Tensioner (Primary) RH
      *7 Spring *8 Cam Spring
      *9 Cam *10 Chain Tensioner (Primary) LH
      *11 Gasket *12 Oil Pocket
      *13 Secondary Timing Chain RH *14 Chain Damper RH
      *15 Chain Slipper LH *16 Chain Tensioner (Secondary) LH
      *17 Chain Slipper RH *18 Primary Timing Chain RH
      *19 Secondary Timing Chain LH *20 Chain Damper LH
      *21 Primary Timing Chain LH - -