OEM Toyota Celica Timing Chain

Toyota Celica Timing Chain Parts and Q&A

• Timing Chain
  13506-88600
  Q: How to inspect and replace the timing chain, sprockets, and crankshaft front oil seal on Toyota Celica?

  A:

  A proper inspection of timing chain and sprockets requires vernier caliper measurement of expanded link number 16 when fully stretched; excessive length exceeding 122.6 mm (4.827 inch) calls for replacement of the chain. Vernier calipers should touch both chain rollers to measure the timing sprocket diameter when the chain is around it; camshaft and crankshaft sprocket minimum diameters stand at 97.3 mm (3.831 inch) and 51.6 mm (2.031 inch). If either sprocket measures below these sizes, the chain and sprockets must be replaced. Replace the slipper or damper of the chain tensioner system if wear measurement exceeds 1.0 mm (0.039 inch). The chain tensioner function should allow the plunger to move effortlessly upward until the ratchet pawl secures itself in position during the release cycle. Perform necessary inspection on the oil jet. The procedure to replace crankshaft front oil seal requires removing the timing chain cover and requires the use of Special Service Tool: 09309-37010 to tap in a new seal while applying MP grease to the seal lip until it is flush with the cover edge. For this operation use a screwdriver and hammer to tap out the old seal. To replace the front oil seal on the crankshaft the timing chain cover should first be removed. Trimming the oil seal lip then using a screwdriver to gently pry out the old seal without harming the crankshaft follows. The next step requires Special Service Tool: 09309-37010 to insert the new seal until it reaches the cover edge while applying MP grease to this area.
• Timing Chain
  13506-0D010
  Q: How to remove the timing chain on Toyota Celica?

  A:

  Start the timing chain removal process by uninstalling upper front fender apron seal and upper radiator support seal followed by draining engine coolant and right-hand front wheel and engine under cover removal. The next step requires removal of the Drive Belt and generator while engineers disconnect the Power Steering Pump through two nuts and through bolts. The suspended pump must be supported with a string. The timing chain removal process starts with using a jack with a wooden block to remove the right-hand engine mounting insulator while for the 1ZZ-FE model the cylinder head cover requires removal of its bolts followed by Ignition Coil, PCV hose, and cover gasket detachment. To service the 2ZZ-GE engine according to the similar approach users need to separate ventilation hoses and extract the ventilation pipe and its gasket. First set the No. 1 cylinder to TDC by having the crankshaft pulley groove align with "0" timing mark and ensuring the sprocket marks of the camshaft line up. Special Service Tools comprising 09213-70010, 09330-00021, along with two nuts allow technicians to remove the crankshaft pulley. During the procedure, the technician must also disconnect the Crankshaft Position Sensor and extract the drive belt tensioner, right-hand engine mounting bracket, chain tensioner, and Water Pump. You must remove all bolts from the timing chain cover and utilize a torx wrench socket of type E8 for the stud bolt for the 1ZZ-FE. The 2ZZ-GE requires the additional components and gasket removal before removing the cover. The service requires technicians to take off the crank angle sensor plate together with the chain tensioner slipper, timing chain and crankshaft timing sprocket, chain vibration damper, and valve timing control assembly that holds the camshaft timing sprocket while making sure to protect the cylinder head from damage. The duration and condition of both timing components must be inspected for proper maintenance before making a replacement decision. The process of replacing oil seals includes using Special Service Tool: 09309-37010 for installation when the timing chain cover is removed or cutting and removing the old seal lip when the cover stays on. Engine oil application needs to precede the assembly of the valve timing controller together with the camshaft timing sprocket before tightening the bolt to its specified torque value. Set the No. 1 cylinder at TDC/compression position then install the chain vibration damper and timing chain followed by the crankshaft timing sprocket while maintaining the correct position of yellow or orange links. The installation requires the chain tensioner slipper and crank angle sensor plate alongside the timing chain cover and water pump. Use seal packing (Part No. 08826-00100 and 08826-00080) per specifications and secure the bolts at their correct torque point. Hydraulic torque tools should be used to tighten the right-hand engine mounting bracket while the drive belt tensioner and crankshaft position sensor and crankshaft pulley need correct tightness according to specifications. After installation of remaining components complete the engine coolant fill-up procedure before starting the engine to inspect for leakage.