OEM 2005 Toyota Celica Timing Chain

2005 Toyota Celica Parts Questions & Experts Answers

• Q: How to inspect and replace the timing chain, sprockets, and crankshaft front oil seal on 2005 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.