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Torquing the crankshaft

Tiny
ENGINEERINGDAD
  • MEMBER
  • 2004 VOLVO S80
  • 2.9L
  • 6 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 129,000 MILES
After completing a full timing belt, pump, idler, tension-er, belts and serpentine replacements, I tighten my crankshaft pulley (center 30mm nut) to 187Nm's and the harmonic balancer (4 Bolts) to 90Nm's. Is that acceptable torque settings?
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Wednesday, August 22nd, 2018 AT 9:01 AM

5 Replies

Tiny
PATENTED_REPAIR_PRO
  • MECHANIC
  • 1,853 POSTS
Crankshaft center nut is 300 nm and harmonic balancer 4 bolts 35 nm, then an additional 50 degrees and it says use new screws.
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Wednesday, August 22nd, 2018 AT 9:42 AM
Tiny
ENGINEERINGDAD
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It has already been reassembled. My torque wrench only go to 203 Nm's any suggestions on how to get the other 97 Nm's without buying another Torque Wrench. The balancer bolts looked to be in excellent shape so that why I re-used.
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Wednesday, August 22nd, 2018 AT 3:02 PM
Tiny
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It is like the difference between putting on lug nuts with an impact which puts out 300+ ft lbs and using a torque wrench instead and torquing to 95 ft lbs, you just get it tight and hope for the best. There is not much I torque outside bolts during an engine rebuild. Now those I torque. When bolts demand so much torque I usually just hit them with an impact and try to judge the torque. I think you should be okay though with the torques you applied.
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Wednesday, August 22nd, 2018 AT 6:32 PM
Tiny
ENGINEERINGDAD
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  • 35 POSTS
Thank you. I am going to purchase a Porter Cable Electric Torque Wrench from Amazon anyway. It is corded, 450 ft. Lbs. Of torque at 2, 200 RPM and 2, 700 BPM for speed and cheap enough for what I do on periodic bases. I really need one between our four vehicles. I will loosen my work (one bolt at a time) and drive them back in at the proper torque settings you provided. The timing belt I do not need to worry about effecting.
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Thursday, August 23rd, 2018 AT 9:15 AM
Tiny
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Sounds like a good plan.
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Thursday, August 23rd, 2018 AT 10:41 AM

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