DI Diesel Engines M57/M67 - Common Rail Sec. 2 P.10
Course contents/Background material
Valve gear
The valve gear consists of the camshafts, rocker arms as well as
the
valves and springs.
The following features apply both to the M57 and M67:
Camshaft
• Chilled cast iron
• New inlet and exhaust camshafts
• Negative cam radius 67 mm
Rocker arm
• Roller-type rocker arm with one hydraulic valve lash per valve
(common part with M47)
• Mounted on valve lash adjuster with oil supply
Valves and springs
• Common part with M47
• Inlet and exhaust valves identical
• Bottom valve plate with integrated valve stem seal
KT-2617
Fig. 19: Valve gear - M47/M57/M67
© BMW AG, Service Training
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