roadmax

Can't find proper torque specs info on these 2 pulleys.
Tensioner puller center mounting bolt (center of the tension spring).

seanjordan20

This is for the belt tensioner

seanjordan20

Looks like idler pulley is 80Nm

twh

twh

you beat me to it

seanjordan20

We were both on it. 😂

roadmax

Thanks for responding.
So to confirm tensioner pulley spring mounting bolt 22 Nm
Is idler pulley mounting bolt 80 Nm or 19 Nm?

There are different and contradicting specs suggested on various websites such as for tensioner pulley 25 Nm plus 90 degrees, etc.

twh

The pulley that bolts into the alternator is 80 Nm. That bracket it screws into is steel and that's why it 80 Nm is fine.

The references you have seen that say 25 Nm + 90 degrees are for the N52 6 cylinder engine which is a magnesium block superstructure (with aluminum innards). The bolt for that one is made of aluminum and thus the torque to yield, one time use bolt.

roadmax

Done, replaced with new ones and applied the specified torque for both, thank you. What a difference between the 2 parts in terms of torque specs and if not followed can easy cause problems or damage.
So I did the alternator bracket seal replacement, what a ride, lot of work but well worth it. While there replaced the oil thermostat O rings as well, voltage regulator (no more voltage drop now), steering pump had missing the rear screw so I added it during mounting back parts.
Noticed the steering (2 connectors, 5 cables total) connector cables were kind of crumbling so applied cloth tape.
Still getting Dynamic Drive Malfunction red icon on dashboard, errors 005D4D and 00D1E4
Not fully clear what is the fix for this.




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seanjordan20

The SZL either needs to be cleaned or replaced