500SEC (140.070) V8-5.0L (119.970) (1993)
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Removal and installation of camshafts
(only when camshaft lobes are not depressing any valve lifters). For this purpose position crankshaft at 45° before compression TDC of no.1 cylinder
(front right) and with the timing chain removed turn camshaft with open end wrench 119 589 00 01 00 accordingly.
Valves
The valves were made smaller and reduced in weight.
The exhaust valves have hardened seats and are sodium filled.
The Viton valve shaft seals are metal banded.
Valve springs
