WL-C Engine Mechanical
Valve Gear
• The valve gear comprises helical gears and a timing belt
• The timing belt drives two camshafts and is adjusted by an auto tensioner.
• Adjustable roller type rocker arms have been adopted to lower the friction between
camshaft lobe and rocker arm, reducing the engine’s mechanical loss.
BT-50_01009
1
Camshaft
pulley
5
Helical
gear
2 Camshaft 6 Timing belt auto tensioner
3 Rocker arm 7 Timing belt
4 Balancer shaft
NOTE: The construction of the helical gears and their adjustment procedure is identical to
that of the WLT-3 engine (refer to the engine W/M).
Service Training BT-50 01-7
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