OEM Scion Timing Chain

Scion Timing Chain Parts Questions & Experts Answers

• Timing Chain
  13506-21050
  Q: How to replace the timing chain on Scion xB?

  A: You must start replacement of the timing chain by first taking out the front wheel RH and subsequently removing the 4 nuts from the cylinder head cover No. 2. Start by disconnecting ignition coil No.1 by pulling out its 4 ignition coils after removing their 4 securing bolts. The cylinder head cover sub-assembly can be taken out after removing 9 bolts combined with 2 nuts and disconnecting the ventilation hoses from both sides of the cover. The next step requires elimination of the fan and generator V-belt then removal of the generator assembly before proceeding with draining engine oil and coolant and removing engine under cover RH. The worker needs to align the timing marks and use Special Service Tools 09213-58012 (91111-50845), 09330-00021 to remove the crankshaft damper sub-assembly pulley bolt. The damper can be taken off with Special Service Tool: 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021). Remove the oil control valve connector and its bolt and the valve along with the O-ring. Detach the crankshaft position sensor and engine mounting insulator sub-assembly RH by setting a wooden block on a jack under the engine before removing the bolt securing the liquid tube followed by taking 5 bolts and a nut along with the bolt fixing the mount pad. Start by removing the 4 bolts securing the transverse engine mounting bracket then proceed with taking out the oil pump assembly together with its seal. First rotate the camshaft counterclockwise 40 degrees from TDC before proceeding with removing chain tensioner assembly No. 1 while keeping the crankshaft from rotating due to the missing tensioner. Insert the plunger of the tensioner while using a 2.5 mm (0.098 inch) diameter bar for stable holding. The chain tensioner slipper and chain vibration damper Number One needs removal so you can pull out the disjointed chain components. Installation requires positioning the crankshaft to ATDC 40 to 140 degrees then correctly positioning the intake and exhaust timing sprockets at ATDC 20 degrees before resetting the crankshaft to ATDC 20 degrees. The chain vibration damper receives 2 bolts implemented with a torque of 9.0 Nm. Subsequently, align the matchmarks between the camshaft timing sprocket, camshaft timing gear, and crankshaft timing sprocket before installing the chain tensioner slipper and chain tensioner through bolts tightened to 9.0 Nm. Use the bar removed from the chain tensioner to measure the proper tension of the timing sprockets between intake and exhaust camshafts. Before installing the oil pump seal with Special Service Tool: 09950-60010 (09951-00250, 09951-00380, 09952-06010), 09950-70010 (09951-07100) you should place the oil pump assembly then the water pump assembly. Fit the transverse engine mounting bracket using 4 bolts at 55 Nm torque value followed by engine mounting insulator sub-assembly RH with 5 bolts and a nut where Bolt A receives 45 Nm torque and Bolt B achieves 52 Nm torque while Nut acquires 52 Nm torque then finish with a bolt installation of the liquid tube at 9.8 Nm torque value. Lay down the camshaft timing oil control valve assembly with its new O-ring first (Torque: 7.5 Nm) and afterward set the crankshaft position sensor and water pump pulley and crankshaft damper sub-assembly (Torque: 128 Nm). Seal packing (Part No. 08826-00080 or equivalent) needs application to the cylinder head cover sub-assembly before installation with 9 bolts and 2 seal washers and 2 nuts (Torque: 10 Nm). Reinstallation of ignition coil No. 1 (Torque: 9.0 Nm) and cylinder head cover No. 2 (Torque: 7.0 Nm) follows. Allow the generator assembly and the vane pump V-belt and the fan and generator V-belt to mount back into the system, conducting adjustments when required on both belts. The first step requires inspection of drive belt deflection and tension before installing the new gasket on the oil pan drain plug (Torque: 38 Nm) followed by engine under cover RH installation (Using 5.0 Nm torque for bolt and nut). After completing the tasks end with engine oil addition and leak inspection before adding engine coolant and confirming no coolant leakage.
• Timing Chain
  13506-0H011
  Q: How to replace the timing chain on Scion tC?

  A: The first step to replace the 2AZ-FE engine timing chain requires removal of the timing chain cover oil seal through screwdriver tapping combined with hammer usage. Place the oil seal retainer on wooden blocks and use Special Service Tool: 09223-22010 together with a hammer to fasten the new oil seal until it meets the timing gear case edge. Shield the lip of the oil seal while keeping it free of foreign substances and tap straight into the seal rather than at any angle. Caretakers should use MP grease sparingly when lubricating the new oil seal lip.
• Timing Chain
  13506-21050
  Q: How to replace the timing chain on Scion xA?

  A: The timing chain replacement process starts with removing the front wheel RH and then proceeding to uninstall the cylinder head cover No.2 by removing its 4 nuts. Commence by unscrewing four bolts that secure the ignition coil No.1 and draw forth the attached four ignition coils. Start by disconnecting both ventilation hoses then proceed to remove the cylinder head cover sub-assembly by uninstalling 9 bolts in addition to 2 nuts. Start by removing the fan together with the generator V-belt and generator assembly and engine under cover RH from the system. Eliminate engine fluid before proceeding to take out the vane pump V-belt along with the water pump pulley and water pump assembly. To access the crankshaft damper sub-assembly set the No.1 cylinder to TDC/compression and match the timing notch with timing mark "0" of the chain cover while keeping the camshaft timing sprocket and gear facing up; if alignment is off adjust the crankshaft 360 degrees so they match. The pulley bolt requires removal with Special Service Tool: 09213-58012 (91111-50845), 09330-00021, while Special Service Tool: 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05021) assists in taking out the damper. Remove the bolt and oil control valve as well as O-ring from the oil control valve connector. Beginning by placing a wooden block under the engine on a jack you should remove the liquid tube bolt holding the insulator before taking out five bolts and the nut. To proceed with the replacement start by unfastening 4 bolts from the engine mounting bracket RH and then unfasten the oil pump assembly along with its accompanying oil pump seal. Avoid crankshaft rotation when chain tensioner assembly No.1 is removed before pushing the plunger while raising the stopper plate upward then holding this plate with a 2.5 mm (0.098 inch) diameter bar. To remove the configuration begin by extracting the chain tensioner slipper and chain vibration damper No.1 from their positions before taking off the chain sub-assembly. To install the components set the crankshaft at ATDC 40 to 140 degrees first then set the intake and exhaust timing sprockets at ATDC 20 degrees before resetting the crankshaft to ATDC 20 degrees. Fasten the chain vibration damper with two bolts which require 9.0 Nm torque before aligning the sprocket matchmarks of the camshaft timing gear with the camshaft timing sprocket and crankshaft timing sprocket. Next, install the chain tensioner slipper (Torque: 9.0 Nm) followed by the chain tensioner (Torque: 9.0 Nm) and finally remove the holding bar from the chain tensioner to check the tension between the exhaust and intake camshaft timing sprockets. Begin installation with the oil pump seal by using Special Service Tool: 09950-60010 (09951-00250, 09951-00380, 09952-06010) combined with 09950-70010 (09951-07100) then install the oil pump assembly and water pump assembly. The procedure involves mounting the RH engine bracket with four bolts at 55 Nm torque strength while adding the RH insulator bracket through five bolts and one nut (A: 45 Nm, B: 52 Nm and C: 52 Nm) followed by liquid tube bolt attachment at 9.8 Nm torque value. Place the camshaft timing oil control valve assembly along with a new O-ring (Torque: 7.5 Nm), afterward install the crankshaft position sensor and water pump pulley through Special Service Tool: 09960-10010 (09962-01000, 09963-00600). The crankshaft damper sub-assembly requires installation with proper alignment of the pin hole toward its designated position while using a pulley bolt that reaches 128 Nm torque. Obtain seal packing (Part No 08826-00080 or equivalent) to apply on the cylinder head cover sub-assembly followed by installation of 9 bolts, 2 seal washers, and 2 nuts (Torque: 10 Nm), later install ignition coil No.1 (Torque: 9.0 Nm) and cylinder head cover No.2 (Nut A: 7.0 Nm, Bolt B: 7.0 Nm). End the process by putting back the generator assembly followed by vane pump V-belt and fan and generator V-belt. At this stage adjust the vane pump V-belt while checking the drive belt deflection and tension. The procedure ends with installing the new gasket on the oil pan drain plug (Torque: 38 Nm) while adding engine oil before leak inspection and engine coolant addition and leak inspection.