OEM 2004 Toyota MR2 Spyder Timing Chain

2004 Toyota MR2 Spyder Parts Questions & Experts Answers

• Q: How to service and repair the timing chain on 2004 Toyota MR2 Spyder?

  A: The first steps for timing chain servicing start with draining engine coolant followed by removing the rear suspension upper brace, engine under covers, drive belt and generator as well as drive belt idler. Completion of this step requires removal of two bolts, two nuts along with the idler component. Start by placing a jack with a wood or rubber block under the oil pan before uninstalling 3 engine mounting bolts and 3 nuts and then the right-hand insulator along with ignition coils and the cylinder head cover. After disconnecting 2 PCV hoses along with the noise filter and heated oxygen sensor (bank 1 sensor 1) connector, users should detach 9 bolts, 2 nuts and 2 seal washers. Take out the bolt that holds the oil dipstick and guide before disconnecting the two connectors and wire bracket. Set the No. 1 cylinder to TDC/compression position by lining up the crankshaft pulley groove with timing mark 0 and checking that camshaft timing sprocket and VVT timing sprocket point marks are properly positioned. Disengage the crankshaft pulley using Special Service Tool: 09213-70011, 09330-00021 and Stool: 09950-50013 (additional possible tools: 09951-05010, 09952-05010, 09953-05020 and 09950-05021). To perform the task remove 11 bolts and a nut along with the drive belt tensioner right-hand engine mounting bracket chain tensioner water pump crankshaft position sensor and timing chain cover by carefully prying off the components. The technician removes the crankshaft position sensor plate while also removing the chain tensioner slipper along with the timing chain, crankshaft timing sprocket, and VVT timing sprocket from the system but takes care to prevent damage to the cylinder head and valve lifter. The technical service procedure requires inspecting the timing chain along with its sprockets for elongation and diameter as well as checking the drive belt idler's rotation and measuring the chain tensioner slipper and vibration damper for wear. Additionally, inspect the chain tensioner and examine the oil jet. The technician should replace the crankshaft front oil seal through Special Service Tool: 09309-37010 while the timing chain cover is removed but should utilize Special Service Tool: 09308-10010 when it remains installed. Perform the drive belt idler bearing replacement using Special Service Tools: 09950-60010 (09951-00240), 09950-70010 (09951-07100) due to their bearing insertion and extraction capabilities. First install the camshaft timing sprocket and VVT timing sprocket while aligning their timing marks and set the No. 1 cylinder at TDC/compression position before adding the chain vibration damper and timing chain and crankshaft timing sprocket. Secure the chain tensioner slipper, crankshaft position sensor plate, timing chain cover, water pump with new O-rings while using Part No. 08826-00100 and 08826-00080 for the specified seal packing. Secure the right-hand engine mounting bracket to its threaded holes while using seal packing and then install the drive belt tensioner and crankshaft position sensor and crankshaft pulley by using Special Service Tools 09213-70011 and 09330-00021 and the chain tensioner. The chain tensioning procedure should be completed before installing the oil dipstick and guide along with the cylinder head cover using its new gasket and right-hand engine mounting insulator and a new gasket on the No. 2 cylinder head cover. The drive belt idler and generator with new drive belt are installed before placement of engine under covers and suspension upper brace. Engine start-up follows for coolant leak testing.