CMF_old_school
» CMF MemberIm on my 4th belt in 12 months so Its probally time to ask for some advice. Basically the belt stretches and then slips, which causes failure. You just keep re-tensioning till it brakes.
On my Micra the Aircon pulley and idler take a 4 rib belt, whilst the crank and alternator take a 5 rib belt. The air con appears to be original fitment and I assume was fitted when the car was purchased. However Nissan list a 5 rib belt as the replacement.
The problem is not so much the mis-match in pulleys but rather that the belt on the aircon pulley has a contact area about 1/4 of the circumference of the pulley. Due to the way the tensioner works.
However is this normal for Micras in Aust? And is the alternator bearing failing or maybe the air con compressor ceasing. Because the car has done 240,000 km and I think the first belt to fail was the original. And if you dont run air con the belt does not appear to fail.
Any Ideas? Thanks
On my Micra the Aircon pulley and idler take a 4 rib belt, whilst the crank and alternator take a 5 rib belt. The air con appears to be original fitment and I assume was fitted when the car was purchased. However Nissan list a 5 rib belt as the replacement.
The problem is not so much the mis-match in pulleys but rather that the belt on the aircon pulley has a contact area about 1/4 of the circumference of the pulley. Due to the way the tensioner works.
However is this normal for Micras in Aust? And is the alternator bearing failing or maybe the air con compressor ceasing. Because the car has done 240,000 km and I think the first belt to fail was the original. And if you dont run air con the belt does not appear to fail.
Any Ideas? Thanks