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21-4 Valve Mechanism 21-4 Valve Mechanism hr ae Valves, Adjustment sal i Or TT |J jh ®Bs Tools: 88800014 Rotation tool IMPORTANT! Clean thoroughly before removal NOTICE! Normal valve clearance is set when the engine is cold, or when it has been left to cool for at least a half hour Oil temperature < 80 °C (176 °F) Removal 1 Remove the upper valve cover according to: Upper valve cover, change, page 87 2 Remove the plug at the flywheel Install 88800014 Rotation tool HOnức pe) FL Bs/28F 7” ron L P0019449 3 NOTICE! Crank counterclockwise, on the engine flywheel side Crank the flywheel until the cylinder 1 mark aligns with the mark on the flywheel housing The camshaft gear has two marks which correspond to the mark on the flywheel P0019450 47705010 05-2017 © AB VOLVO PENTA 100 21-4 Valve Mechanism 4 Check that the gearwheel's marking (1) corresponds with the surface of the left side of the cylinder head If not, crank the flywheel one more turn Marking (1) facing surface of the cylinder head: e The Inlet valves for cylinders (1), (3) and (5) e The exhaust valves for cylinders (1), (2) and (4) “Né \V l // TPIT ED h ON A a A3) (2Ÿ ING cH Í Lh (LT CF ề HỊ— Ô | A a = Oo, @ ¬¬© © © © e—-© © ` —— Te eee a TT P0019452 A Inlet valve 1 Cylinder1 4 Cylinder4 B Exhaust valve 2 Cylinder2 5 Cylinder5 3 Cylinder 3 6 Cylinder 6 47705010 05-2017 © AB VOLVO PENTA 101 21-4 Valve Mechanism OREM 3 AYD$ØRE®E°S92 Checks and adjustment, inlet valves Sf 3 Xi C C Ơ CC VU 0 5 NOTICE! Cylinder (1) is on the opposite side in No ĐÀN) OlF o iFiR)O Y= Se relation to the engine flywheel/gearwheel an (GPa bạc Check the valve clearance on the inlet valves for lay" vate cylinders (1), (3) and (5) ee Ì Check (ae © et 6 Check the valve clearance for the inlet valves with the aid of a feeler gauge set The clearance must be 0.4 +0.05 mm In the value is not correct, adjust the valve P0019454 Adjustment P0019455 7 ~ Adjust inlet valve clearance between the rocker 102 arm and the valve yoke to 0.4 mm with the aid of a feeler gauge set Loosen the adjuster screw locking nut on the rocker arm Turn the adjuster screw until the right clearance is achieved Feeler gauges should be used when adjusting One 0.40 mm, the other 0.45 mm Set the clearance so that only the 0.40 mm feeler gauge can be inserted without any great resistance, and only slight resistance should be felt when the feeler gauge is pulled back and forth It should not be possible to insert the 0.45 mm feeler gauge without resistance Counterhold the adjuster screw while tightening the locking nut Tightening torque: 33 Nm (24.3 Ibf ft.) 47705010 05-2017 © AB VOLVO PENTA 21-4 Valve Mechanism 2 OF a ) |: Checks and adjustment, exhaust valves 8 NOTICE! Cylinder (1) is on the opposite side in relation to the engine flywheel/gearwheel Check the valve clearance on the exhaust valves for cylinders (1), (2) and (4) | fat EN †) Ne ite ehoom Check exhaust valves 9 Check the valve clearance for the mm with the aid of a feeler gauge set The clearance must be 0.5 +0.05 In the value is not correct, adjust the valve P0019458 Adjustment 10 Adjust exhaust valve clearance between the rocker arm and the valve yoke to 0.5 mm with the aid of a feeler gauge set Loosen the adjuster screw locking nut on the rocker arm Turn the adjuster screw until the right clearance is achieved Feeler gauges should be used when adjusting One 0.50 mm, the other 0.55 mm Set the clearance so that only the 0.50 mm feeler gauge can be inserted without any great resistance, and only slight resistance should be felt when the feeler gauge is pulled back and forth It should not be possible to insert the 0.55 mm feeler gauge without resistance Counterhold the adjuster screw while tightening the locking nut Tightening torque: 33 Nm (24.3 Ibf ft.) 47705010 05-2017 © AB VOLVO PENTA 103 21-4 Valve Mechanism 11 Engines equipped with exhaust brake 885812 systems (VCB) Adjustment of exhaust brake: P0019459 Use 885812 Timing tool Adjust the piston on the exhaust brakes for 104 cylinders (1), (2) and (4) Loosen the locking nut and adjust the screw until zero clearance is retained Loosen the adjuster screw, (403°) Counterhold the adjuster screw while tightening the locking nut Tightening torque: 15 Nm (11.1 Ibf ft.) 12 NOTICE! Crank counterclockwise, on the engine flywheel side Crank the flywheel one turn until the cylinder 1 mark aligns with the mark on the flywheel housing 13 Check that the gearwheel marking corresponds with the surface of the left side of the cylinder head If not, crank the flywheel one more turn Marking left facing surface of the cylinder head e The Inlet valves for cylinders (2), (4) and (6) e The exhaust valves for cylinders (3), (5) and (6) 47705010 05-2017 © AB VOLVO PENTA 21-4 Valve Mechanism Checks and adjustment, inlet valves 14 NOTICE! Cylinder (1) is on the opposite side in relation to the engine flywheel/gearwheel Check the valve clearance on the inlet valves for cylinders (2), (4) and (6) Check 15 Check the valve clearance for the inlet valves with the aid of a feeler gauge set The clearance must be 0.4 +0.05 mm In the value is not correct, adjust the valve P0019462 Adjustment 16 Adjust inlet valve clearance between the rocker arm and the valve yoke to 0.4 mm with the aid of a feeler gauge set Loosen the adjuster screw locking nut on the rocker arm Turn the adjuster screw until the right clearance is achieved Feeler gauges should be used when adjusting One 0.40 mm, the other 0.45 mm Set the clearance so that only the 0.40 mm feeler gauge can be inserted without any great resistance, and only slight resistance should be felt when the feeler gauge is pulled back and forth It should not be possible to insert the 0.45 mm feeler gauge without resistance Counterhold the adjuster screw while tightening the locking nut Tightening torque: 33 Nm (24.3 Ibf ft.) 47705010 05-2017 © AB VOLVO PENTA 105 21-4 Valve Mechanism “an o@ ghYb iQee ` f 1Á THẢ Checks and adjustment, exhaust valves ụ (5) a OK) 17 NOTICE! Cylinder (1) is on the opposite side in relation to the engine flywheel/gearwheel EISy a oP Check the valve clearance on the exhaust valves YI| PNỈ KI3] BOBYi Or NOK 1—) tO dÌÌ oan dÌÌ li for cylinders (3), (5) and (6) \= =jo —^ Ne Check exhaust valves 18 Check the valve clearance for the mm with the aid of a feeler gauge set The clearance must be 0.5 +0.05 In the value is not correct, adjust the valve P0019465 Adjustment 19 Adjust exhaust valve clearance between the 106 rocker arm and the valve yoke to 0.5 mm with the aid of a feeler gauge set Loosen the adjuster screw locking nut on the rocker arm Turn the adjuster screw until the right clearance is achieved Feeler gauges should be used when adjusting One 0.50 mm, the other 0.55 mm Set the clearance so that only the 0.50 mm feeler gauge can be inserted without any great resistance, and only slight resistance should be felt when the feeler gauge is pulled back and forth It should not be possible to insert the 0.55 mm feeler gauge without resistance Counterhold the adjuster screw while tightening the locking nut Tightening torque: 33 Nm (24.3 Ibf ft.) 47705010 05-2017 © AB VOLVO PENTA P0022851 21-4 Valve Mechanism 4 20 Engines equipped with exhaust brake systems (VCB) P0019449 Adjustment of exhaust brake: Use 885812 Timing tool Adjust the piston on the exhaust brakes for cylinders (3), (5) and (6) Loosen the locking nut and adjust the screw until zero clearance is retained Loosen the adjuster screw, (403°) Counterhold the adjuster screw while tightening the locking nut Tightening torque: 15 Nm (11.1 Ibf ft.) 21 Remove 88800014 Rotation tool from the gear ring Install the plug 22 Insert plug for the flywheel mark 23 Install the upper valve cover according to: Upper valve cover, change, page 87 P0019466 47705010 05-2017 © AB VOLVO PENTA 107