Genuine Volvo 940 Valve Lifter

Volvo 940 Valve Lifter Parts and Q&A

• Valve Lifters
  463075
  Q: What are the steps involved in removing and installing Camshaft, Camshaft Bearing and Valve Lifter on Volvo 940?

  A:

  The 2.3L 4-cylinder, 2.9L 6-cylinder and 2.3 and 2.4L 5-cylinder engines use camshafts that ride directly over the followers, allowing one to inspect after removal. It is important to mark the followers for the correct placement if removal is a necessity. The 2.8L 6-cylinder engine has rocker shaft mounted followers. When installing a camshaft, lubricate the camshaft, seats and lifters with the correct camshaft lube or moly grease. For the 2.3L 4-cylinder engines, start by disconnecting the negative battery cable, removing drive belts and setting the engine to TDC of the No. 1 cylinder, removing the Timing Belt and valve cover. After removing the camshaft center bearing cap and the other bearing caps, remove the camshaft. To install, apply sealant to the caps, lubricate the camshaft and check for end-play before tightening the bolts. For 2.8L 6 cylinder engine, disconnect the battery, set engine to TDC, take off the cylinder head cover and the camshaft rear cover plate and pull the camshaft out. Installation includes oiling of the camshaft and followers, tightening the retaining bolt and reassembling the head. The 2.9L 6-cylinder engine requires similar first steps, including removing the battery and drive belts, and carefully removing the camshaft pulleys and the cylinder head. Installation involves lubrication of camshafts, holding tools and correct alignment of timing marks. For the 2.3L and 2.4L 5-cylinder engines, the procedure begins by disconnecting the battery and removing the drive belt, and then removing various parts, with care taken to obtain the camshafts. Installation involves lubrication, correct alignment and tightening of holding bolts, as well as checks for bearing noise and clean contact surfaces before final assembly and testing for leaks after bringing the engine to life.
• Valve Lifters
  9180681
  Q: What is the recommended maintenance interval for valve lifter adjustment and what tools are required for the process on Volvo 940?

  A:

  The recommended maintenance interval for valve clearance adjustment is 30,000 miles (48,000 km) and the clearance can be checked with the engine either hot or cold. Not all Volvo engines have adjustable valves, some of them (B230F and B230FT engines) have them, others are using hydraulic tappets and no adjustable. For valve clearance adjustment on these engines, special tools are required; these include a valve tappet depressor tool, a special pair of pliers specially made to remove and install the valve adjusting disc, a set of varying thickness valve adjusting discs, and a feeler gauge. The procedure starts by disconnecting the negative battery cable and removing the valve cover. The engine is then rotated to bring the No. 1 cylinder to Top Dead Center (TDC) where the valve clearance is checked by the feeler gauge. If the clearance is wrong, valve depressors are aligned, and the valve is depressed using the appropriate tool for getting rid of the adjusting disc. The thickness of the disc is measured and a new disc is chosen depending on the difference calculated. Following the lubrication and installation of the new disc, the same procedure is followed with the No. 3, 4 and 2 cylinders followed by rechecking of all cylinders after engine rotation. Finally, the valve cover is fitted with a new gasket, the negative battery cable is connected, and engine operation is tested. For the B280F engine, the steps are to remove the negative battery cable, the engine will remove some parts to get to the valve covers, after which they will check the clearance of certain valves by rotating the crankshaft and feeler gauge. After adjustments the valve covers are reinstalled, components are reattached, the negative battery cable is connected and engine operation is checked.