Volvo B 21 - Cylinder Head Screw Retorquing

Group 21 Reconditioning engine
Assembly
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Retorquing cylinder head $Crews
Applies ont y to early type screws
1. Warm-up engine. leave to cool for 30 minutes.
2. Slacken screw 1 approx. 30 °.
Retorque to 110 Nm (80 fI.tbs).
FB
3. Repeat for remaining screws in sequence shown
adjacent.
F9
Atter 1000 km (600 miles):
• Checkladjust new timing gear belts .
• If new parts have been titted to valve assembly,
recheck valve clearance.
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