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Not an easy job if you are planning to do at home. A good socket set will help in removing most bolts. You will need the proper axle nut socket to remove the axle nut. This can be a very tedious procedure without the use of air tools. The CV axle may require a special removal tool that slips in behind the inner joint to seperate it from the transmission as these can be diffucult to remove.
Remove all the belts on the pulley. Remove the center retaining bolt which typically needs to keep the engine from turning to get it off unless you use an impact wrench. Then you need a puller to push against the end of the crank shaft and pull the pulley off.
You need to be pretty skilled to do this job. First you need a diagram of all the timing marks for the front of the engine. You start disconnecting the battery. Remove serpentine belt and tensioner. Remove any brackets or mounts then the front engine covers. With a socket rotate the crankshaft pulley to TDC. Un tension the timing belt and remove. With a cam holder tool loosen the cam pulley retaining bolt. Remove the pulley and seal. Clean the pulley and cam surface and install the new seal. Line up all the marks and reinstall the timing belt. Rotate the engine and recheck the timing marks. Reassemble.
Remove and isolate the keys from the ignition so the Optima cannot be accidentally started up during the belt replacement repair.
Remove the hubcap and then crack the front passenger wheel nuts with a
lug wrench. Just loosen the nuts and do not remove them.
Open the hood of the optima and then lift the passenger side
front quarter with a floor jack. Place jack stand under the front frame
rail to safely and securely support the minivan. Leave the floor jack in
place, but allow the weight of the minivan to rest on the jack stand.
Remove the wheel nuts and then the wheel.
Remove the inner wheel well splash shield. Depending on when
and where optima was manufactured, a variety of retaining devices
may be in place. Some plastic retaining clips can simply be unseated by
prying them with a screwdriver; others may have a small plastic screw
which will need to be unscrewed a quarter inch to contract the clip and
then be pried out. Yet other retaining devices may include metal screws
that will need to be unscrewed with a screwdriver.
Locate the outer belt tensioner pulley near the
alternator--in towards the lower front portion of the engine--revealed
by the removal of the splash shield.
Loosen the center bolt of the tensioner pulley with a hand
wrench. Parallel to the engine, locate the tension adjuster bolt
(located on the tensioner pulley) and turn it counterclockwise to
release tension on the belt with a hand wrench. Turn it enough to allow
wiggling movement of the tensioner pulley. If necessary, loosen the
tensioner pulley bolt some more to remove the belt from the pulleys.
If the front of the crankshaft pulley is accessible and you have removed all accessory belts you can remove the bolt on front of pulley with a pneumatic or electric torque wrench. It is very difficult with hand tools. I would not recommend.
the tensioner pulley is the only pulley that isnt attached to any type of fixture it is a pulley that sits alone, and all you need is a socket wrench to loosen it, loosen it until you can move the belt and take off, remeber what order the belt goes on to replace it, draw a diagram if you have to