changing altinator belt...???

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
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carlos9999
Posts: 414
Joined: Wed Jun 20, 2007 11:21 pm
Location: Torquay, Devon

changing altinator belt...???

Post by carlos9999 »

is it easy to do... eg: access
dantheman
Posts: 1205
Joined: Tue Nov 24, 2009 6:51 pm
Location: NW London

Re: changing altinator belt...???

Post by dantheman »

ive not changed it with the engine in, but im changing it now with my engine out. i imagine you will have to loosen the aircon pulley from above, take the aircon belt off, then probably get underneath the car, take the altenator belt off, put the new one on, then do the reverse.
carlos9999
Posts: 414
Joined: Wed Jun 20, 2007 11:21 pm
Location: Torquay, Devon

Re: changing altinator belt...???

Post by carlos9999 »

so its not just a case of loosening the altenator and then removing the belt then, im assuming you mean its behind another belt..??

can anyone else confirm this..!!
dantheman
Posts: 1205
Joined: Tue Nov 24, 2009 6:51 pm
Location: NW London

Re: changing altinator belt...???

Post by dantheman »

indeed. the crank pulley which drives the altenator belt is doubley thick. it has an aircon belt on the outside, and the altenator belt on the inside, closer to the engine. to put a new one on would require you take the aircon belt off first. you will not be able to get the altenator belt over that pulley unless you do so.
Image
this picture shows it well. you can see the altenator belt is on the inside of the crank pulley, behind where the aircon belt will be
carlos9999
Posts: 414
Joined: Wed Jun 20, 2007 11:21 pm
Location: Torquay, Devon

Re: changing altinator belt...???

Post by carlos9999 »

cheers for that bud..... the picture shows it well
so if i loosen the pulley will i have to readjust the tension on the aircon afterwards..??
tranx
Posts: 52
Joined: Tue Dec 22, 2009 10:43 pm
Location: Southampton

Re: changing altinator belt...???

Post by tranx »

You would have to take the aircon belt off to replace the alternator belt. Access is a bit tight but I had no trouble getting at it from underneath when the car was on ramps.

Remove the diagnostics block and horn from the back bulkhead and your access to the belt and adjusters from above is greatly increased.

I'm not sure on the removal of the aircon belt as my car doesn't have it.

Also be careful of the connector on the side of the engine below the pulley, this is for the oil level warning light. Mine was broken off when the alternator belt snapped. I have since found that the sensor is very expensive from Toyota and requires the whole sump to be dropped to replace. I've decided to just check my oil on the dipstick more often and ignore the light.
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