OEM Toyota 4Runner Timing Chain

Toyota 4Runner Timing Chain Parts and Q&A

• Secondary Chain
  13507-AD010
  Q: How to remove the timing chain on Toyota 4Runner?

  A:

  The procedure of timing chain removal on the 1GR-FE engine begins with disconnecting first the power steering link assembly followed by differential carrier assembly front installation for 4WD then draining engine coolant and oil. Start by taking out both the battery and the V-bank cover then continue with the removal of the radiator support seal upper by unclipping its 11 fasteners. Start by releasing the fluid coupling assembly and then take off the fan and generator V belt before proceeding to remove the fluid coupling assembly. The air cleaner assembly along with the oil level gauge guide and water inlet needs removal after disconnecting the No. 2 ventilation hose. The vane pump assembly requires disconnecting the P/S oil pressure switch connector as well as removing its 2 bolts while safeguarding the pulley from contact with all other components. The service technician should take apart the generator assembly together with the cooler compressor assembly and V-ribbed belt tensioner assembly while removing the No. 2 and No. 1 idler pulley sub-assemblies. Special Service Tools: 09213-54015 91651-60855 along with a pulley set bolt are required to remove the crankshaft pulley through its set bolt and Special Service Tool: 09950-50013. Removal of the No. 2 oil pan sub-assembly requires unfastening its 10 bolts, 2 nuts, removing the applied sealer, and maintaining safe contact surface integrity. The service must continue with the removal of the oil strainer sub-assembly and the oil pan sub-assembly and the intake air surge tank along with the Ignition Coil assembly and two cylinder head cover sub-assemblies. Detach the camshaft timing oil control valve assembly by removing its 2 connectors and 2 bolts and 2 valves. Commence the process by taking away the VVT sensor as well as the timing chain or belt cover sub-assembly followed by separating the timing gear case or timing chain case oil seal. To set the No. 1 cylinder for TDC/compression position install the crankshaft pulley set bolt and put the crankshaft set key at the timing line of the cylinder block and make sure camshaft timing gears match the bearing caps. The crankshaft needs one complete revolution before obtaining correct timing mark alignment. Proceed with caution when removing the No. 1 chain tensioner assembly because rotating the crankshaft should not occur without the tensioner in place. Continue to fix the stopper plate by pushing the plunger inside during the process. The procedure requires users to remove the 2 bolts and chain tensioner along with the chain tensioner slipper and No. 1 idle gear shaft using a 10 mm hexagon wrench followed by the removal of the No. 2 chain vibration damper before collecting the chain sub-assembly.
• Timing Chain
  13506-AD010
  Q: How to install the timing chain on Toyota 4Runner?

  A:

  The procedure to install the 1GR-FE timing chain requires starting with the chain tensioner slipper installation followed by the No. 1 chain tensioner assembly including pushing the plunger while doing clockwise and counterclockwise rotations with a 3.5 mm (0.138 in.) bar until fixed before torquing the 2 bolts at 10 Nm (102 kgf-cm, 7 ft-lbf). Follow this by positioning the No. 1 cylinder at TDC/compression while your alignment task focuses on matching the timing marks of camshaft timing gears and bearing caps. At this point you can install the crankshaft pulley set bolt before using the crankshaft to make the set key match the timing line. Before lifting the chain into place you should position the yellow mark link adjacent to the crankshaft timing gear and the orange mark links should be applied to the camshaft timing gears. Place the No. 2 chain vibration dampers before you apply engine oil to the No. 1 idle gear shaft and fasten both components together through their knock pin position. Use the 10 mm hexagon wrench to fasten the No. 2 idle gear shaft to 60 Nm (612 kgf-cm, 44 ft-lbf) before taking out the bar from the chain tensioner. Embed the timing gear case oil seal, timing chain or belt cover sub-assembly, VVT sensor and camshaft timing oil control valve assembly with both 10 Nm (102 kgf-cm, 7 ft-lbf) bolts. Proceed to install the cylinder head cover sub-assemblies, Ignition Coil assembly at 10 Nm (102 kgf-cm, 7 ft-lbf), intake air surge tank, and oil pan sub-assembly, ensuring to remove old packing and apply a new O-ring to the oil pump, followed by a continuous bead of seal packing (3 to 4 mm (0.12 to 0.16 in.)) before tightening the oil pan bolts and nuts uniformly: bolt A at 21 Nm (214 kgf-cm, 15 ft-lbf), bolt B at 21 Nm (214 kgf-cm, 15 ft-lbf), bolt C at 10 Nm (102 kgf-cm, 7 ft-lbf), and nut at 21 Nm (214 kgf-cm, 15 ft-lbf). Install the 4 housing bolts at 37 Nm (377 kgf-cm, 27 ft-lbf) and the flywheel housing under the cover. After installing the new gasket and 2 nuts at 9.0 Nm (92 kgf-cm, 80 in-lbf) onto the oil strainer sub-assembly proceed with installing the No. 2 oil pan sub-assembly by applying seal packing then tightening the bolts and nuts uniformly at 10 Nm (102 kgf-cm, 7 ft-lbf). Apply Special Service Tools 09213-54015 91651-60855 and 09330-00021 to install the crankshaft pulley before mounting the No. 1 idler pulley sub-assembly at 54 Nm (551 kgf-cm, 40 ft-lbf). When installing the No. 2 idler pulley sub-assembly obey specific guidelines that depend on whether the idler pulley cover plate exists and perform needed replacements. Place the V-ribbed belt tensioner assembly then tightening bolt 1 and 2 to 36 Nm (367 kgf-cm, 27 ft-lbf) while following by additional bolt installation at the same torque value. After attaching the vane pump assembly with 2 bolts at 43 Nm (438 kgf-cm, 32 ft-lbf) you should connect the P/S oil pressure switch connector before installing the water inlet. The oil level gauge guide needs installation following application of a new O-ring with a 9.0 Nm (92 kgf-cm, 80 in-lbf) torque setting, then install the oil level gauge, air cleaner assembly and connect the No. 2 ventilation hose. Fitting the fluid coupling assembly together with the fan and generator V belt requires a complete torque tightening of the fluid coupling assembly. The service procedure includes first installing the radiator support seal upper before placing the battery and Differential carrier assembly front and power steering link assembly. Along with oil and coolant addition follow a leak check then secure the V-bank cover using 2 nuts at 7.5 Nm (76 kgf-cm, 66 in-lbf) before inspecting the ignition timing.