Question 1

How to install new valve stem seals on the inlet valve guides in relation to the Camshaft and Cylinder Head on Volvo 244?

Accepted Answer

Fit new valve stem seals (inlet valve guides). Unless parts have been renewed, refit values, springs and tappets in their original positions, remembering to oil the valve stems before putting them into the guides in the valve. Over each valve put on the lower spring retainer, valve spring, and upper spring retainer. Use a valve spring compressing tool to compress the spring and fit the collets into the recess in the valve stem, release the compression tool and fit the rubber ring. Oil the bearing seats for the camshaft, bearing caps, camshaft and tappets and fit the tappets and adjuster washers before fitting the camshaft in the cylinder head. Coat the face of the front cap that mates with the cylinder head with a sealing compound, fit the caps with aligned markings, and secure the retaining nuts, tightening the nuts evenly to compress the valve springs and not to cause a stress on the camshaft unevenly, torquing the nuts to 15 lb ft. Before fitting the camshaft seal, mineral grease should be applied to the rubber lip of the seal and on the corresponding surface on the camshaft, without damaging the seal against the edge of the camshaft, and fitted to form a new wear surface. Fit the rear guide plate, gearwheel with the slot on the gear located at the end of the camshaft, then the front guide plate, washer and retaining bolt, restraining the gear wheel from turning and torque tightening the bolt to 37 lb ft. Finally torque tighten the spark plugs to 18-22 lb ft on carburettor engines or fit new 'O' ring seals for the retainers and injectors for fuel injection engines.

Question 2

How should the engine be turned and what steps are involved in removing and refitting the cylinder head for 1.8 and 2.0 litre petrol engines on Volvo S40?

Accepted Answer

Only turn the engine in the normal direction of rotation - clockwise from the right-hand side of the vehicle. Start by taking off the battery and the bottom part of the battery box. Clearly label any disconnected vacuum lines, coolant and emissions hoses, wiring loom connectors, earth straps and fuel lines for correct reassembly. Drain the cooling system and then remove the air cleaner, exhaust manifold and heat shields. Place rags around the pipes, depress the locking tab and disconnect the fuel feed pipe from the fuel rail. Undo the two screws to remove the fuel rail, plugging the openings to avoid the entrance of dirt, and then remove the intake manifold. Disconnect different wiring plugs from the components on the cylinder head, undoing any applicable wiring loom from retaining clips. Remove the coolant housing from the left-hand end of the cylinder head by undoing four bolts then remove the EGR valve by undoing two bolts and discarding the gasket. Remove the cylinder head cover, timing chain, camshafts and tappets, being sure to disconnect all associated coolant/vacuum hoses/wiring connectors. Progressively loosen the ten cylinder head bolts by one turn at a time being sure to remove each cylinder head bolt in turn and replace with new ones, because of the tremendous stresses they experience during service. Lift the cylinder head away with assistance if possible and remove the gasket taking note of the position of the dowels. Before refitting the head, you have to make sure the mating faces of the cylinder head and cylinder block are perfectly clean, using a scraper made from hard plastic or wood, to rub off all traces of gasket and carbon, and clean the crowns of the pistons. Take care to prevent carbon entering the oil and water passages and seal the water, oil and bolt holes in the cylinder block using adhesive tape and paper. Check the mating surfaces for nicks, deep scratches, etc., and, if warpage of the cylinder head gasket surface is suspected, use a straight-edge to check for distortion. Wipe clean the mating surfaces, making sure that the locating dowels are in position and that all the cylinder head bolt holes are oil free. Place a new gasket over the dowels on the surface of the cylinder block, making sure it is fitted properly. Rotate the crankshaft anti-clockwise so that the piston of No 1 cylinder is lowered to about 20mm before TDC to ensure that there is no valve/piston contact during reassembly. Refit the cylinder head, lubricate the threads and fit the new cylinder head bolts, screwing them in by hand till finger tight. Use of a torque wrench, and then an ordinary socket extension bar and an angle gauge to tighten the cylinder head bolts one at a time and in succession, completing this in stages as specified. Once tightened correctly, the cylinder head bolts do not require a check tightening and must not be re-torqued. Refit the tappets, camshafts, and timing chain and finish the rest of the reassembly in reverse order, making sure all the nuts and bolts are tightened to the recommended torque specifications, filling the cooling system, and toping up engine oil. Finally, inspect all disturbed joints for indications of leakage in the oil or coolant loss after restarting the engine and warming it up to the normal operating temperature.

Genuine Volvo Cylinder Head

24 Cylinder Heads found

Volvo Cylinder Head, Driver Side Part Number: 9146335

Volvo Cylinder Head Part Number: 36050234

Volvo Cylinder Head Part Number: 8251064

Volvo Cylinder Head Part Number: 8251140

Volvo Cylinder Head Part Number: 9122087

Volvo Cylinder Head Part Number: 36050243

Volvo Cylinder Head Part Number: 5003766

Volvo Cylinder Head Part Number: 36000472

Volvo Cylinder Head Part Number: 36001010

Volvo Cylinder Head Part Number: 36003603

Volvo Cylinder Head Part Number: 36012435

Volvo Cylinder Head Part Number: 36012530

Volvo Cylinder Head Part Number: 36012532

Volvo Cylinder Head Part Number: 36012999

Volvo Cylinder Head Part Number: 36013000

Volvo Cylinder Head Part Number: 36013561

Volvo Cylinder Head Part Number: 36050460

Volvo Cylinder Head Part Number: 36050502

Volvo Cylinder Head Part Number: 36050643

Volvo Cylinder Head Part Number: 8251451

Volvo Cylinder Head Parts and Q&A

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