Question 1

How to remove and refit the Belt Tensioner and Timing Belt on engine components for 2.0 litre 4-cylinder diesel engine on Volvo S40?

Accepted Answer

To remove the engine parts, first disconnect the battery negative lead and remove the plastic cover on top of the engine. Lift the coolant expansion tank without disconnecting the hoses and move it aside. Loosen the front right hand roadwheel bolts, raise the car on axle stands, and place the car on axle stands securely before removing the roadwheel. Remove the engine undershield by releasing the 7 Torx screws and take the auxiliary drivebelt off. Support the engine before removing right hand mounting, by engine support bar or crane and attach lifting gear to engine lifting eye. With the engine supported, remove the right hand engine mounting, remove cable clip on timing belt cover, remove bolts to remove top timing belt cover. Loosen the crankshaft pulley bolt without losing the old bolt for reassembling. Use special tools to set the engine at TDC for No 1 cylinder or you can use an 8mm drill bit and rod. Remove the bolts from the starter motor and set it to one side to reveal the crankshaft setting tool hole. Rotate the engine clockwise until the camshaft sprocket hole and the cylinder head hole are aligned, insert the crankshaft setting tool and have an assistant rotate the crankshaft to align the holes. Insert the camshaft locking tool through the camshaft sprocket into the cylinder head, adjusting the camshaft sprocket a bit if necessary. Disconnect the wiring plug from the crankshaft position sensor, undo the bolt and remove the sensor. Remove the crankshaft pulley and sensor ring/spacer and undo the bolts to remove the lower timing belt cover. Raise the engine a bit and release the timing belt tension by loosening the bolt of the timing belt tensioning pulley, and remove the timing belt, which is not allowed to be used again. Loosen the bolts and remove the engine mounting bracket and idler pulley, and remove the tensioner bolt, the tensioner, and idler pulleys. If it is not immediately to be provided with a new timing belt, then temporarily refit the right-hand engine mounting and tighten the bolts. To refit, make sure that the crankshaft and camshaft are still at TDC on No 1 cylinder, fit the new idler pulley, and insert the retaining bolt. Refit the engine mounting bracket and tighten the bolts to the recommended torque. Fit the new timing belt tensioner and tighten it finger tight. Fit the new timing belt over the sprockets properly (the arrows on the timing belt should point to the direction of rotation). Turn the tensioner arm anti-clockwise until the pointer is in the correct position and then tighten the tensioner retaining bolt firmly. Refit timing belt lower cover and tighten bolts and then sensor ring/spacer and crankshaft pulley, tighten old pulley bolt to specified torque. Remove the setting/locking tools, then rotate the crankshaft two complete revolutions clockwise and check to see if the camshaft locking tool can be reinserted. Adjust the tensioner pointer, if required, and tighten the retaining bolt tightly. Replace the old crankshaft pulley bolt with a new one, tightening the new bolt to the specified torque, and not rotating the crankshaft. Finally, remove the locking tools and complete the refitting process, making sure to tighten all fasteners to their specified torque.

Question 2

Should the Belt Tensioner and Cam Gear be replaced whenever the timing belt is renewed on Volvo V70?

Accepted Answer

Whenever the timing belt is renewed, the tensioner and idler pulley should also be renewed at the same time. To remove the timing belt tensioner, remove the timing belt and then remove the center bolt and tensioner. Roll the tensioner roller to see if there is any sort of rough or noise (indicating bearing wear), if in doubt renew the tensioner. For refitting, the tensioner must be put back in place, then the bolt can be put in place without tighten it completely by making sure the tensioner fork finds the right place over the rib on the cylinder block, then refit and tension the timing belt. To remove the camshaft sprocket, remove the timing belt, unscrew the bolts on the sprocket, while holding the sprocket in place, remove it from the camshaft. For refitting, take out the vacuum pump from the left-hand end of the exhaust camshaft and put a camshaft locking pin in the cylinder head and camshaft sprocket, and inspect the alignment of the crankshaft sprocket and oil pump housing. Turn the crankshaft clockwise about 15 degrees and then refit the sprocket to the camshaft, tightening the bolts to the point where there is still some movement between the two. Remove the blanking plug from the cylinder block, insert the crankshaft stop tool, and rotate the crankshaft counter-clockwise to the point where the crankshaft web of No 5 cylinder rests against the stop tool and check the marks on the alignment. Refit timing belt, have all the marks line up, and tighten camshaft sprocket bolts to the recommended torque, remove the locking tool and crankshaft stop tool, and refit vacuum pump and blanking plug. For the crankshaft sprocket removal, remove the timing belt, and if need be, use a puller to remove the sprocket, not levering it off to avoid damage. For refitting, clean the mating surfaces, ins attach the timing marks and fit the timing belt around the crankshaft sprocket, idler pulley, camshaft sprocket, coolant pump and tensioner pulley, refit the pulley to the sprocket and crankshaft nut (tighten it finger tight) and rotate the crankshaft in an anti-clockwise direction approximately 45 degrees. Stop the movement of the crankshaft, tighten the pulley nut and bolts to the specified torque, tension the timing belt and finish the refitting procedure. To remove the idler pulley, remove the timing belt, remove the bolt, and remove the idler pulley, and refitting is a reverse operation of removal and make sure all the bolts are tightened to their specified torque.

Genuine Volvo Belt Tensioner

24 Belt Tensioners found

Volvo Tensioner Part Number: 31316106

Volvo Belt Tensioner Part Number: 30638276

Volvo Belt Tensioner Part Number: 30638277

Volvo Belt Tensioner Part Number: 30637955

Volvo Tension Pulley Part Number: 9135036

Volvo Belt Tensioner Part Number: 31258153

Volvo Belt Tensioner Part Number: 30650957

Volvo Belt Tensioner Part Number: 30711320

Volvo Serpentine Tensioner Part Number: 31251250

Volvo Belt Tensioner Part Number: 31251653

Volvo Belt Tensioner Part Number: 31251654

Volvo Belt Tensioner Part Number: 31401286

Volvo Belt Tensioner Part Number: 31359881

Volvo Belt Tensioner Part Number: 32249369

Volvo Belt Tensioner Part Number: 32249371

Volvo Tension Pulley Part Number: 30684210

Volvo Belt Tensioner Part Number: 31216199

Volvo Belt Tensioner Part Number: 32312720

Volvo Serpentine Tensioner Part Number: 6842019

Volvo Tensioner Part Number: 32298826

Volvo Belt Tensioner Parts and Q&A

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