Lexus 99367-C2090 Fan & Alternator V Belt

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Those crucial drive belts are located at the front part of the engine which enable the vehicle to run and also make its accessories work. As time goes by, these belts can fail in their purpose and should be regularly examined and adjusted so as to avoid severe damages. All V6s and four-cylinder models of 2009 and earlier use a single serpentine belt while those of 2010 and after use two serpentine belts. Automatic tensioners eliminate any need for adjustments. Open the hood with the engine off to inspect the drivebelt and carefully check for any signs of damaged such as severed core, separation of adhesive rubber or cracks in the ribs. If these conditions are observed, replace the belt. When changing the belt, it is advisable to carry along with you the old one so that you get a correct match in terms of length, width and design. The process of replacement is different, depending on the type of an engine used. For four-cylinder engines, right hand front wheel, fender apron seal, engine cover assembly must be removed. Next turn tensioner pulley bolt or hex-shaped lug to release tension on belt allowing removal thereof. In case you're changing power steering pump belt first remove alternator/water pump/air conditioning compressor belt. The new one should be installed ensuring that it is centered on all pulleys. Usually V6 engines require using wrench which rotates tensioner pulley away from belt hence releasing tension thus removing it. Before installing a new belt lock the tensioner using dowel pin or drill bit. Therefore properly route a new belt over one more pulleys making sure that it is centered on each pulley as well as adjust its tension. Take out drivebelt if drivebelt tensioner needs replacing then take out mounting fastener(s). Install a new tensioner ensuring that locking pin seats into housing correctly at last insert drivebelt properly to ensure that it is centered on the pulleys.

Adjusting belt tension is crucial for proper belt operation. Specific steps for tension adjustment may vary based on the engine model.

Inspect the belts with the engine off, looking for signs of damage like severed cores, adhesive rubber separation, core detachment, rib separation, cracking, fraying, or glazing.