how tight does the crank bolt need to be?
any one know how tight the crank bolt should be?:wonder:
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It's 122 to 137 nm.
Pretty tight really! Leaving it loose causes grief with the pulley and keyway. |
Thank you very much! it over 110nm will try and get it tighter this weekend!!!:eek2:
Any cunning idea the hold the crank still!:confused: |
Pull the starter out and lock the flywheel is the only certain way when it's in the car.
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two 10 or 12 mm bolts opposite each other in the holes provided on the pulley. Put a tyre lever or similar in between them and then turn the crank till it locks onto the lever. Now tighten the bolt keeping the crank still with the lever.
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Just to add to the confusion, I have copied the following directly from the Subaru workshop manual:
B: INSTALLATION 1) Install crankshaft pulley. 2) Install pulley bolt. To lock crankshaft, use ST. ST 499977100 CRANKSHAFT PULLEY WRENCH (1) Clean the crankshaft pulley thread using an air gun. (2) Apply engine oil to the crankshaft pulley bolt seat and thread. (3) Tighten the bolts temporarily with tightening torque of 44 N·m (4.5 kgf-m, 33 ft-lb). (4) Tighten the crankshaft pulley bolts. Tightening torque: 177 N·m (18.0 kgf-m, 130.2 ft-lb) 3) Confirm that the tightening angle of the crankshaft pulley bolt is 65 degrees or more. If not, conduct the following procedures (1) through (4). (1) Replace the crankshaft pulley bolts and clean them. Crankshaft pulley bolt: 12369AA011 (2) Clean the crankshaft thread using an air gun. (3) Tighten the bolt temporarily with tightening torque of 44 N·m (4.5 kgf-m, 33 ft-lb). (4) Tighten the crankshaft pulley bolt keeping it in an angle between 65 degrees and 75 degrees. Phil |
177 nm :freak3: :eek2: :cuckoo: :eek:
erm thats tight! could this be why its a common problem with the woodruff key and the pulley being eaten........ cus its just not being done up enough!:wonder: |
I would say so yes.
Some of the figures banded about are way off the official figure, so i can only assume that it has been incorectly published elswhere at some point. You will find that the pulley (if not tight enough) could start to Oscillate which in turn would wreck both the key & pulley and could also wreck the crankshaft keyway, which would then req'r a new crankshaft. |
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