OEM 2007 Toyota 4Runner Timing Chain

2007 Toyota 4Runner Timing Chain Parts Q&A

• Q: How to service the timing chain on 2007 Toyota 4Runner?

  A: The service of the timing chain requires initial removal of the power steering link assembly then front differential carrier assembly on 4WD models and finally draining engine coolant and oil. The next step requires removal of the battery along with V-bank cover and upper radiator support seal through the removal of 11 clips. First disconnect the fluid coupling assembly before removing the fan and generator V belt afterward and continuing with the fluid coupling assembly removal. Remove the No. 2 ventilation hose while unfastening the air cleaner assembly and extracting both the oil level gauge guide and its gauge and O-ring. The vane pump assembly needs separation by disconnecting the P/S oil pressure switch connector and removing two bolts. Take care not to damage the pulley against any other component. Users must remove the generator assembly along with the cooler compressor assembly and V-ribbed belt tensioner assembly after unbolting 5 pieces and then disassemble both No. 2 and No. 1 idler pulley sub-assemblies. The crankshaft pulley removal requires Special Service Tool: 09213-54015 (91651-60855), 09330-00021 to secure the pulley during bolt loosening before completely removing both components with a combination of 09950-50013 (09951-05010, 09952-05010, 09953-05020, 09954-05030). The No. 2 oil pan sub-assembly needs to be removed through the process of removing 10 bolts and 2 nuts while using Special Service Tool: 09032-00100 to cut off the applied sealer. Start the engine removal process by removing the oil strainer sub-assembly then the oil pan sub-assembly, intake air surge tank, ignition coil assembly along with both cylinder head cover sub-assemblies. The servicing steps begin with disconnecting the 2 connectors from the camshaft timing oil control valve assembly while removing 2 bolts before proceeding to remove the VVT sensor with the timing chain or belt cover sub-assembly. Set No. 1 cylinder at TDC/compression position by positioning the crankshaft set key on the cylinder block timing line while the camshaft timing gear marks must align with bearing caps. Before rotating the crankshaft remove the No. 1 chain tensioner assembly while using care and then take out the chain tensioner slipper followed by the No. 1 idle gear shaft and No. 2 chain vibration damper and chain sub-assembly. The installation process begins with the chain tensioner slipper and then leads to the No. 1 chain tensioner assembly but requires proper fixation of the stopper plate with a 3.5 mm bar. Install the chain sub-assembly by positioning the mark links with the timing marks before adding the No. 2 chain vibration damper, No. 1 idle gear shaft, and securing the No. 2 idle gear shaft with a 10 mm hexagon wrench. Position the timing gear case or timing chain case oil seal together with the timing chain or belt cover sub-assembly and VVT sensor and camshaft timing oil control valve assembly before tightening all bolts to 10 Nm. The system combination includes both cylinder head cover sub-assemblies and ignition coil assembly and intake air surge tank. The oil pan sub-assembly installation requires removal of old packing materials and addition of fresh parts including an oil pump O-ring along with Toyota Genuine Seal Packing Black or Three Bond 1207B or Equivalent seal packing materials applied before installing the assembly with 17 bolts and 2 nuts that should be equally tightened. Place the oil strainer sub-assembly with its new gasket before installing the No. 2 oil pan sub-assembly while the process requires applying seal packing to all components then uniformly tightening bolts and nuts. To install the crankshaft pulley you need Special Service Tool: 09213-54015 (91651-60855), 09330-00021 and you should torque the pulley set bolt to 250 Nm. The installation of No. 1 idler pulley sub-assembly together with No. 2 idler pulley sub-assembly and V-ribbed belt tensioner assembly requires proper torque on all bolts. The last step includes installation of the cooler compressor assembly and generator assembly with vane pump assembly followed by connecting the P/S oil pressure switch connector then proceeding to attach the water inlet and oil level gauge guide until completion with air cleaner assembly installation and final connection of the No. 2 ventilation hose. Place a fluid coupling assembly followed by generator V belt installations then perform a fluid coupling assembly torque procedure and finally install the upper radiator support seal and battery alongside the front differential carrier assembly and power steering link assembly. Seamlessly install the V-bank cover by torquing it to 7.5 Nm while checking for leaks and also checking the ignition timing.