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Volvo MD2010, MD2020, MD2030, MD2040 Engine cylinder head installation
1. Clean the surface of the cylinder head and cylinder block. Remove any rust or soot from the screw hol es and threads for the cylinder head screws.
2. Fit on the new cylinder head gasket.
3. Apply grease containing molybdenum disulphide on the cylinder head screws.
NOTE! The screws are surface treated and must not be cleaned with a steel brush.
Note: I f the cylinder head is painted the mating surfaces for cylinder head screws must be free from paint, otherwise the clamping force in the screw union will be adversely affected.
4. Check that the tubular pins (guides) are fitted in the block. Place the two rear cylinder head screws in the cylinder head and fit the hea
5. Tighten the cylinder head screws in three stages as per the following. See tightening diagrams Fig. 30-31.
1st tightening
MD2O10. MD2020 10 Nm (7.40 ft.lbs)
MD2030 20 Nm (14.80 ft.lbs)
MD2040 30 Nm (22.10 ft.lbs
2nd tightening
MD2O10, MD2020 20 Nm (14.80 ft.lbs)
MD2030 35 Nm (25.80 ft.lbs)
MD2040 70 Nm (51.70 ft.lbs)
Final tightening
MD2O10, MD2020 35-40 Nm (26-30 ft.lbs)
MD2030 50-53 Nm (37-39 ft.lbs)
MD2040 90-95 Nm (66-70 ft.lbs
6. Fit the pull rods (2), valve caps (3, MD2040 and l ater versions of 2010, 2020,2030) and rocker mechanism (1).
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7. Adjust the valve clearance as per directions on page 34. Fit the valve cover.
Fig. 33. Fitting of oil pressure pipe (cylinder block
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