Camshaft; Timing Chain And Chain Tensioner - Toyota 1NZ-FE User Manual

2. Camshaft

D Oil passages are provided in the intake camshaft in order to supply engine oil to the VVT-i system.
D A VVT-i controller is provided on the front of the intake camshaft to vary the timing of the intake valves.
D A Timing rotor is provided behind the intake camshaft to trigger the camshaft position sensor.
VVT-i Controller

3. Timing Chain and Chain Tensioner

D A roller type timing chain with an 8.0 mm (0.315 in.) pitch is used to make the engine compact and reduce
noise.
D The timing chain is lubricated by an oil jet.
D The chain tensioner uses a spring and oil pressure to maintain proper chain tensioner at all times. The chain
tensioner suppresses noise generated by the timing chain.
D A ratchet type non-return mechanism is used in the chain tensioner.
" A
Chain Tensioner
Spring
Check Ball
Cam Spring
ENGINE - 1NZ-FE ENGINE
Exhaust Camshaft
Plunger
Cam
Chain
Slipper
Oil Passage (Advance)
Oil Passage (Retard)
Oil Jet
EG-9
Timing Rotor
Intake Camshaft
247EG08
Timing Chain
Chain Damper
247EG09