OEM 2007 Buick Rainier Timing Chain

2007 Buick Rainier Timing Chain Parts and Q&A

• Q: What tools are required to replace the timing chain, sprockets, or tensioner on 2007 Buick Rainier?

  A: The tools with which it is necessary to replace the Timing Chain, sprockets, or tensioner are: torque angle meter (J 36660-A) and camshaft holder tool (J 44221). Take the camshaft cover and the engine front cover off as the first step. Release tension on the Timing Chain by rolling the tensioner shoe in and insert a tee into the tensioner to lock the shoe there. Throw the top chain guide bolts and the top chain guide, along with the exhaust camshaft position actuator bolt and actuator, the intake camshaft sprocket bolt and sprocket, the Timing Chain, and the crankshaft sprocket. Then, take out the cylinder head access hole plugs, Timing Chain tensioner shoe bolt, Timing Chain tensioner shoe, Timing Chain tensioner guide bolts, guide, Timing Chain tensioner bolts and the tensioner. For the installation, secure the Timing Chain tensioner with bolts which should be tightened to 25 n.m (18 lb ft), before you can install the Timing Chain tensioner guide and shoe that should be tightened at 10 n.m (89 lb in) and 26 n.m (19 lb ft). Fasten the cylinder holes access plugs, tightening them to the limit of 5 n.m (44 lb in). Use the camshaft holding tool (J 44221) position the camshaft flats up and number 1 piston on tdc and install the crankshaft sprocket. Install the intake camshaft sprocket into the Timing Chain and fit in the head such that the dark link came into contact with the timing score on the sprocket and fed the chain down through the head. Mount the Timing Chain into the crankshaft sprocket making sure that the dark link goes in direction with the timing mark. Mount the intake camshaft sprocket onto the intake camshaft and thereafter, washer and bolt. Put the exhaust camshaft actuator in the Timing Chain with the dark piece and the timing mark. Then put the actuator on the exhaust camshaft making sure that it is fully advanced during the process. Tighten the exhaust camshaft actuator bolt to 25 n.m (18 lb ft) for one turn and finally use the torque angle meter (J 36660-A) with an additional 135 degrees. Tighten the intake camshaft sprocket bolt to a total angle of 20 n.m (15 ft lb) on the first pass and additional 100 degrees on the second one with the use of the torque angle meter (J 36660-A). Remove the tee from the Timing Chain tensioner, the camshaft holding tool (J 44221), making sure that the dark lines of the chain fuck together with the marks of the sprockets. Lastly, fit the top chain guide with threadlock in bolt threads and torque the top chain guide bolts to 10 n.m (89 lb in) and refit the engine front cover and camshaft cover.