I usually hold my breath when changing the pully, but some folks need air or they'll pass out.
To change the alternator belt on a Mazda 323, first remove the right hand air shield under the can. Then locate the pulley tensioner of the AC and loosen the bolts on the pulley. Finally, remove the alternator pivot bolt under the alternator to remove the old alternator belt and replace with a new one.
right side / pass. side has mark on outside rigtht and left has it on outside left, a arrow shape in the metal. bottom crankshaft pulley is 12 o'clock top center. i believe you need to repklace tensioner when doind tim belt replacement and i have been struggling to get the belt on due to cannot push back the spring loaded tensioner pulley. may be a stuck tensioner.
I will assume you are regarding the pulley for the power steering? If so to loosen it use a socket on the top of the pulley it should have a flat head style appearance.Loosen it clockwise and then the big nut on front of the pulley is a 7/8 inch combination wrench loosen it and the pulley should slide down to make the PS belt loose.This pulley is kind of weird but,by loosening the top bolt (metric) the bolt will come up as you take the tension off.Then YOU defenitely have to loosen the nut on the front of the pulley itself which alloys the pulley to move up or down.To adjust back with new belt on run the top bolt which is behind the pulley with the flat head cut in it run it down tight then tighten the nut on front of the pulley this locks the pulley in place so it will not move.Hope this helps.If this question is in reference to the tensioner for the timing belt resubmit your question.
On my 93 Mazda MPV I removed the shroud above the fan, loosened the tensioner on the right side (as you look at the engine) and that losens the outside belt. Then, go to the other side and losen the tensioner top and bottom for the alternator and second belt. Losen the bolt under the alternator and it will hit the pulley before you get it out - so you'll have to remove the pulley. Used a screwdriver to go through the small holes in the pulley and jam the pulley so I could losen with 5/8 socket. This may take a cheater. It is a regular thread (no reverse thread here) We did remove the bottom shroud but may not have been necessary as the pulley bolt was visibile and accessible from above. Once the pulley is off, remove the long bolt underneath the alternator and lift the alternator and tilt for access to the back - remove the 2 electrical wires sets and it should lift right out of there.
pull off mud flaps and find the belt tensioner turn the nut on the tensioner pulley clockwise to loosen serpentine belt. Take belt off. Take the three bolts out of the water pump pulley and take it of then you have three bolts connecting the water pump to the motor take them off problem may be the old water pump may stick if it does not slide it out replace it and dont forget to clean the gasket area with a wire brush and use sealant along with a gasket I hope this is helpful
Because its a Mazda! its normally part of the 75k service which costs anywhere between £500 and £850 depending on which Mazda garage you go to. Plus another potential £150 as apparently the auto tensioner can 'go' when replacing the belt. Mazda want £300 to change just the belt. But mazdas do seem to be excessively expensive compared to other cars for parts. My mazda6 diesel 2002 is due for a belt change. But am gonna get my mechanic to do it instead. Belt is £70-£80 plus labour charges. email@example.com
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