OEM 2005 Toyota MR2 Spyder Timing Chain

2005 Toyota MR2 Spyder Parts Questions & Experts Answers

• Q: How to remove and install the timing chain on 2005 Toyota MR2 Spyder?

  A: One must begin by draining the engine coolant followed by removing the rear suspension upper brace and engine under covers and drive belt and generator along with drive belt idler by removing 2 bolts and 2 nuts. Install a jack under the oil pan with a wooden or rubber block in position, then take out the 3 bolts, 3 nuts and RH engine mounting insulator. There are multiple steps required for timing chain replacement starting with ignition coil and cylinder head cover removal after disconnecting two PCV hoses and noise filter and heated oxygen sensor (bank 1 sensor 1) connector then proceeding to remove 9 bolts combined with 2 nuts and 2 seal washers before disconnecting the engine wire to remove cylinder head cover and gasket. Start by aligning the No. 1 cylinder to TDC/compression through crankshaft pulley rotation which places the timing mark 0 onto groove position. Also confirm the straight alignment of the camshaft timing sprocket and VVT timing sprocket point marks. The crankshaft pulley removal requires Special Service Tools: 09213-70011, 09330-00021 while Special Service Tool: 09950-50013 will help if needed to remove the pulley. To reach the components of water pump, crankshaft position sensor, and timing chain cover you must carefully remove 11 bolts and a nut while prying off the drive belt tensioner, chain tensioner, RH engine mounting bracket. The service requires the removal of the crankshaft position sensor plate together with the chain tensioner slipper, timing chain, crankshaft timing sprocket, and chain vibration damper. During inspection you should verify the timing chain length with vernier calipers stands between 122.6 mm (4.827 inch) and check the timing sprocket diameter and perform a smooth rotation test of the drive belt idler. The measurement of chain tensioner slipper and vibration damper wear should not exceed 1.0 mm (0.039 inch) and the chain tensioner plunger movement should be smooth. If you remove the timing chain cover use Special Service Tool: 09309-37010 yet Special Service Tool: 09308-10010 is needed for installation when the cover stays in place to replace the crankshaft front oil seal. Install the drive belt idler bearing with the aid of Special Service Toolbox: 09950-60010 and 09950-70010. Engine oil should be applied to camshaft journals before camshafts get placed on the cylinder head while tightening bolts to their specified torque values. Setting the No. 1 cylinder to its TDC/compression position allows the installer to mount the chain vibration damper followed by the timing chain and crankshaft timing sprocket while aligning all timing marks. First install the chain tensioner slipper and crankshaft position sensor plate then the timing chain cover and water pump using specified seal packing types 08826-00100 and 08826-00080. You must install the RH engine mounting bracket and the drive belt tensioner along with the crankshaft position sensor and crankshaft pulley through the use of Special Service Tool: 09213-70011 to set the chain tension. The correct timing of valves can be checked when the crankshaft pulley groove lines up with Timing Mark 0 while the point marks on both the camshaft timing sprocket and VVT timing sprocket align. The procedure ends with oil dipstick installation followed by the cylinder head cover while completing the steps with RH engine mounting insulator then ignition coils then No. 2 cylinder head cover and drive belt idler before generator installation and drive belt attachment and engine under cover addition and suspension upper brace fitting before filling with engine coolant and engine start-up for coolant leak inspection.