Toyota 13529-20900 Gear, Camshaft Sub

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To begin the removal process, start by disconnecting the negative battery cable and ensure the rear wheels are blocked while the parking brake is engaged. Loosen the lug nuts on the right front wheel, raise the vehicle, and securely support the front on jackstands. Proceed to remove the right front wheel and fender apron seal. Following this, remove the coolant overflow tank and the spark plugs and drive belts. Take out the alternator and its bracket and support the engine from beneath with a jack (using a wood block to avoid the oil pan drain plug). Remove the right engine mount and engine support rod. Afterward, remove the upper timing belt cover screws and pull up the wiring harness, then remove the upper (no.timing belt cover and gaskets. Ensure the number one piston is at TDC on the compression stroke and verify alignment between the small hole in the camshaft pulley and the TDC mark on the cam bearing cap. Optionally, apply match marks on the sprocket and belt if reusing the timing belt. Loosen the upper (no.idler pulley set bolt and unhook the spring to slip the timing belt off the sprocket. If the camshaft sprocket requires removal, hold the rear camshaft with a wrench and remove the bolt. Remove the crankshaft pulley bolt, secure the engine from turning, and use a breaker bar and socket to loosen and remove the pulley. Proceed to remove the lower (no.timing belt cover and gaskets, slipping the belt guide off the crankshaft if needed. If reusing the timing belt, apply match marks on the sprocket and belt. Slip the timing belt off the sprocket and remove it. Inspect the idler pulleys for smooth operation and the spring for damage, and assess the belt for cracks, wear, or damage. Replace the timing belt with a new one if wear or damage is evident or if there are concerns. When installing the new belt, ensure the timing marks on the camshaft and crankshaft are correctly aligned. Reinstall idler pulleys and the tension spring, check timing mark alignment again, and fit the timing belt onto the appropriate components. Slip on the belt guide with the cupped side facing out and reinstall the lower timing belt cover and crankshaft pulley, verifying TDC marks. Place the timing belt over the camshaft sprocket while maintaining tension on one side, loosen the upper idler pulley bolt, and allow the spring to apply pressure. Slowly turn the crankshaft clockwise until the marks align correctly, then tighten the idler pulley. Rotate the crankshaft two revolutions and recheck the timing marks. If they align as required, reinstall the remaining components in reverse order, paying attention to gasket material on covers if necessary. Finally, run the engine to verify proper operation.

To begin the removal process, first, disconnect the negative battery cable and proceed by removing the coolant overflow and windshield washer tanks, and if applicable, the front suspension upper brace on Solara models. Then, remove the drive belts from the alternator and power steering pump, followed by loosening the lug nuts on the right front wheel but leaving them in place. Raise the front of the vehicle, ensuring secure support on jack stands, and remove the right front wheel, inner fender apron, and the spark plugs. Position the number one cylinder at Top Dead Center (TDC) and support the engine from below, removing the engine movement control rod and its bracket, using a wooden block on the jack head for support. Additionally, remove the upper timing belt cover and gasket, ensuring the wiring harness is unclipped and pushed back. Verify installation marks on the timing belt or make new ones if obscured, and ensure proper alignment of the camshaft pulley timing marks. Remove the timing belt tensioner, release tension between the rear and front camshaft sprockets, and detach the timing belt from the camshaft sprockets. If needed, the camshaft sprockets can be removed after removing the valve cover. Next, remove the upper idler pulley, the crankshaft pulley bolt, and the crankshaft pulley itself, being cautious not to disturb the TDC position of the crankshaft. Remove the lower timing belt cover, the timing belt guide, and the timing belt itself, ensuring alignment marks are present or adding new ones. Remove the no. 1 idler pulley and plate washer using an Allen wrench, and if necessary, the crankshaft sprocket, taking care not to damage the crankshaft sensor portion. Inspect the belt tensioner for leaks and proper protrusion, and check the idler pulleys for smooth rotation. For installation, clean the timing belt area thoroughly, align the crankshaft timing sprocket keyway with the crankshaft key and install the sprocket, being cautious with the crankshaft sensor portion. Apply thread-locking compound to the lower idler pulley bolt and position the idler pulley and washer, tightening the bolt. Install the timing belt, starting with the crankshaft sprocket, ensuring alignment with marks on the belt, sprockets, and covers if reusing the original belt. Place the belt over the lower idler and water pump pulleys, slip the belt guide over the crankshaft, and install the lower timing belt cover and gasket. Fit the crankshaft pulley onto the crankshaft, aligning the keyway, and tighten the bolt while preventing the crankshaft from turning. Reinstall the upper idler pulley, ensuring smooth rotation. Place the front camshaft sprocket on the camshaft with the flange side out, aligning the pin hole with the camshaft pin, and install the retaining bolt while preventing camshaft movement. Double-check timing marks for alignment. If applicable, adjust the rear camshaft sprocket to align with the mark on the rear cover and place it on the camshaft with the flange side in, aligning the pin hole with the camshaft pin, and install the retaining bolt, again preventing camshaft movement. Slightly turn the front camshaft sprocket clockwise to add tension to the belt, then slip the belt onto the rear sprocket. Compress the timing belt tensioner pushrod, insert a pin, drill bit, or Allen wrench through the holes, and release the pressure. Install the timing belt tensioner, tighten the bolts, and remove the retaining pin. Rotate the crankshaft clockwise through two complete revolutions to recheck timing marks. Finally, reinstall the engine movement control rod's mounting bracket, upper timing belt cover and gasket, engine movement control rod and braces, and all other previously removed parts in reverse order.

Before beginning, make sure you have the necessary special tools and equipment ready. Disconnect the battery's negative terminal and proceed to remove the drive belt, alternator, valve cover, and ABS actuator if applicable.

Remove the engine movement control rod and its bracket, as well as the spark plugs. Remove the upper timing belt cover and check for installation marks on the timing belt.

The coolant overflow tank, spark plugs, drive belts, alternator, engine mount, and engine support rod are removed to access the timing belt and related components.

After timing belt removal, you should inspect the timing belt tensioner for leaks and proper protrusion. Additionally, you should check the idler pulleys for smooth rotation.

Remove the crankshaft pulley bolt and remove the pulley.

Inspect all components for wear and damage, including the timing chain, sprockets, and chain guides. Replace any components that fail inspection. Ensure the chain guides are within specified wear limits.