Quote:
Originally Posted by Almuliman
From the service manual:
3AZ Belt pulley / vibration damper to hub
(lots of other engines...)
All / others
M8
22 Nm
1AZ Belt tensioner to engine block N51
M11x65
Jointing torque: 25 Nm
2AZ Deflection N51
M10x40
40 Nm
Torque angle 90 °
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Thanks Almuliman. I just measured the old bolts. The aluminum tensioner bolt is indeed M11X65. The FCP Euro guide calls for an additional 90 past the 25nm in the service manual. It is a torque to yield bolt so I would think the additional angle would be necessary as with any stretch-bolt. Possibly an updated torque spec?
The idler bolt measures M10X45 and is grade 10.9 steel. 40nm plus 90 on a hardened steel fastener into a cast aluminum case seems dangerously excessive to me. I think I'll stick with what the kit recommends and give both bolts a check after a short run. Thanks again for posting the specs from the manual.