Toyota 90916-02500 Belt, V

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A single auxiliary drivebelt is fitted at the right-hand side of the engine. The length of the drivebelt varies according to whether power steering or air conditioning is fitted. A manual tensioner is fitted, so the drivebelt tension should be checked at regular intervals and particularly after fitting a new drivebelt. Due to their function and material makeup, drivebelts are prone to failure after a long period of time, and should therefore be inspected regularly. The drivebelt is located very close to the right-hand side of the engine compartment, and better access can be gained by jacking up the right-hand front wheel and removing the engine right-hand lower cover panel. With the engine stopped, inspect the full length of the drivebelt for cracks and separation of the belt plies. Twist the belt between the pulleys to check its condition. Also check for fraying and glazing which gives the belt a shiny appearance. Check the pulleys for nicks, cracks, distortion, and corrosion. Small cracks in the belt ribs are not usually serious, but look closely to see whether the crack has extended into the belt plies. If the belt is in any way suspect or is known to have seen long service, renew it. Check the drivebelt tension by pressing on the belt at a point midway on the longest run between two pulleys. Compare the deflection noted with the figures quoted in the Specifications. If the drivebelt appears excessively taut or slack, adjust the belt tension. If the belt appears not to be too slack but has actually been slipping in service, check the belt for any sign of external contamination and cure the source of the leak before fitting a new belt.

To remove the alternator drivebelt, start by jacking up the right-hand front wheel and supporting the car with an axle stand. Remove the engine right-hand lower cover panel from under the car. Loosen the alternator lower pivot bolt and the lockbolt for the adjuster bolt. Unscrew the adjuster bolt and push the alternator forwards to release the drivebelt tension. Remove the belt from all the pulleys, noting the routing. For models with hydraulic power steering, loosen the adjuster bolt from the top of the power steering pump and the lower pivot bolt from beneath the vehicle. Push the top of the pump toward the engine to remove the belt from the power steering pump pulley and the crankshaft pulley. To refit the belt, feed it onto the pulleys, ensuring it is seated properly. Install the belt onto the alternator pulley last. If necessary, loosen the adjuster bolt to allow a new belt to fit. Tighten the adjuster bolt to take up the slack in the belt. Turn the engine in the normal direction of travel to settle the belt. Adjust the belt tension by turning the adjuster bolt in small steps. Check the tension by pressing on the belt midway between two pulleys. Repeat the tensioning procedure until satisfactory. Tighten the adjuster lockbolt and the alternator lower pivot bolt to the specified torque. Lower the car and run the engine to check for slipping. If a new belt has been fitted, recheck the tension after a month or 1000 kilometers.

The drivebelt tension can be checked by pressing on the belt at a point midway on the longest run between two pulleys. The deflection noted should be compared with the figures quoted in the Specifications.

After loosening the tension, the old drivebelt should be removed by sliding it off the pulleys.

The first step to refit the alternator drivebelt is to feed it onto the pulleys, ensuring it is seated properly.

The procedure for the auxiliary drivebelt includes the following materials: a wrench, a socket set, a pry bar, and a new drivebelt. Start by locating the tensioner pulley and using the wrench to loosen the tension. Then, remove the old drivebelt by sliding it off the pulleys. Next, install the new drivebelt by routing it around the pulleys according to the correct diagram. Use the pry bar to apply tension to the belt and tighten the tensioner pulley. Finally, double-check the belt's alignment and ensure it is properly seated on all the pulleys.