Genuine Volvo 780 Cam Gear

Volvo 780 Cam Gear Parts and Q&A

• Camshaft Gear
  247955
  Q: What are the essential steps and considerations for replacing the cam gear and timing belt on Volvo 780?

  A:

  The timing system is very complex and serious engine damage can occur when mistakes are made so only experienced individuals should attempt this procedure. Before starting the engine, turn the crankshaft by hand at least two complete turns, if there is any resistance, stop immediately to find the problem, because here may be valve and piston contact. It is recommended to replace the timing belt tensioner when replacing the timing belt because the tensioner may leak hydraulic fluid or seize causing a timing belt failure. For B23QF and B230FT engines, disconnect the negative battery cable, remove the timing belt cover, TDC the engine with respect to the No. 1 cylinder, loosen the tensioner nut and remove the timing belt carefully. When installing, make sure to align all of the shafts with their corresponding index marks and install the new belt without sharp tools and check that the timing marks align by rotating the crankshaft. For the B234F engine with two timing belts, follow similar steps being careful with the exact placement of belts and pulleys. For the 2.9L 6-cylinder engine, disconnect the battery, remove required engine covers and belts, align timing marks, and inspect the tensioner and idler pulleys before placing the new belt. For 2.3L and 2.4L 5 cylinder engines, follow a similar steps, taking care of tension and alignment. Adjustments for the B234F engine include a tension gauge to make sure the tension is correct, and the 2.9L engine has similar requirements. Regular inspection of the timing belt for wear and contamination is very important because if there is any indication of wear and debris, it will cause wear and tear of the timing belt very quickly and may cause engine failure. Following the manufacturer's recommended intervals for replacement is vital to ensure the health of the engine.