OEM Toyota Tundra Timing Belt

Toyota Tundra Timing Belt Parts Questions & Experts Answers

• Belt, Timing
  13568-09070
  Q: How to Properly Remove and Install a Timing Belt on Toyota Tundra?

  A: Engaging in the timing belt removal procedure needs the removal of engine under cover followed by draining engine coolant and disconnecting the upper radiator hose. The PS pump gets detached from the engine through removal of two PS air hoses from the air intake chamber and resonator along with a bolt holding the PS pressure tube clamp to the frame and through removal of the Drive Belt and the bolt and nut securing the PS pump. Users should detach the A/C Compressor from the engine by removing its connector along with drive belt and four bolts. The generator drive belt is removed first as technicians loosen the fan with fluid coupling and fan pulleys to replace the No.2 fan shroud. After removing the fan with fluid coupling and fan pulleys of the A/C-equipped vehicles follow the procedure to remove five bolts from the A/C compressor bracket. During the sequence of steps use disconnect the upper radiator hose before proceeding to remove the No.2 timing belt cover by disconnecting the Camshaft position sensor connector and four high-tension cord clamps then remove six bolts. The procedure to remove the fan bracket starts with taking out the nut and PS pump adjusting strut then moving on to the bolt and nut before removing the bracket. Align the groove of the crankshaft pulley to "0" timing mark of No.1 timing belt cover while setting the No.1 cylinder at TDC/compression until both camshaft timing pulleys and No.3 timing belt cover timing marks align; repeat this procedure if necessary by turning the crankshaft pulley once. Finishing the timing belt reuse requires setting matchmarks on both the timing belt and camshaft timing pulleys before positioning the timing belt at the end of the No.1 timing belt cover. Start by alternately unscrewing and removing two bolts from the timing belt tensioner before removing both components with their dust boot. LH camshaft timing pulley requires SST 09960-10011 (09962-01000, 09963-01000) for pulley bolt loosening before removing the bolt knock pin and pulley. Utilize SST 09213-54015 (90119-08216), 09330-00021 to free the pulley bolt of the crankshaft pulley and if extra help is needed SST 09950-50012 (09551-05010, 09552-05010, 09553-05020, 09554-05030) can be used. Removal of the timing belt guide and timing belt begins following bolt removal from the starter wire bracket and four indicating bolts securing the No.1 timing belt cover. The timing belt maintenance requires new installation marks to replace any vanished original marks so they match the pre-drilled marks of the crankshaft timing pulley. Start by extracting the No.2 idler pulley bolt before proceeding to uninstall the pivot bolt, No.1 idler pulley and plate washer using a 10 mm hexagon wrench. If the crankshaft timing pulley does not detach easily by hand use SST 09950-50010 (and its related parts) with service bolts to remove it. The inspection of the timing belt must confirm its free state from bending, twisting and turning inside out and its complete separation from oil, water and steam. You must examine the timing belt for a variety of conditions including premature parting, cracked or damaged teeth as well as visible wear or cracks and proper alignment of belt guide and pulleys. The inspection of idler pulleys should include checks for oil leakage while ensuring smooth operation and the timing belt tensioner should show no oil leakage while its push rod demonstrates correct motion. Check the push rod measurement between the housing end to ensure a range of 10.0 - 10.8 mm (0.394 - 0.425 inch). When installing the crankshaft timing pulley place the pulley set key into the key groove before sliding it on keeping the sensor part protected from damage. A 10 mm hexagon wrench should be used to install the No.1 idler pulley and No.2 idler pulley as per specified torque values. Proceed by installing the timing belt temporarily when the engine temperature is cool and then align the timing marks between the crankshaft timing pulley and oil pump body while maintaining proper clean condition of all pulleys. First place the timing belt guide with its cup side facing out before you install the No.1 timing belt cover together with the starter wire bracket. Verify that all gasket seals remain in good shape. Fitting the crankshaft pulley demands correct alignment while keeping to required torque values. The LH camshaft timing pulley needs installation through SST while maintaining alignment of the knock pin hole. Align the timing marks during the installation process by setting the No.1 cylinder to the TDC/compression position. Fit the timing belt onto the LH camshaft timing pulley while its installation mark faces the timing mark then verify the tension. The replacement of RH camshaft timing pulley requires both cleaning and alignment of established installation marks during the timing belt installation. Follow the correct procedure to set the timing belt tensioner while you implement a solid installation of the dust boot. The valve timing needs verification through crankshaft pulley revolution turns while confirming that all timing marks align correctly. You must install the fan bracket while setting the No.2 timing belt cover and A/C compressor bracket if present with proper torque requirements. Initially mount the fan through fluid coupling alongside fan pulleys before putting on the No.2 fan shroud. The generator drive belt installation and adjustment process follows while the fan receives coupling with fluid attachment along with fan pulleys installation. The A/C compressor must be connected to the engine if present. Use proper torque on the PS pump connection to the engine before reconnecting the upper radiator hose. Engine coolant completes the filling process before starting the engine to check for leaks and afterward installing the under cover. The road test follows this sequence to confirm normal operating conditions. The results will be assessed for noise, shock, slippage, correct shift points and smooth operation before engine coolant recheck.