lhrocker Posted December 28, 2006 Share Posted December 28, 2006 What is the best way to tighten the bolt on a crank shaft pulley? Link to comment Share on other sites More sharing options...
idosubaru Posted December 28, 2006 Share Posted December 28, 2006 impact wrench or with a socket wrench and a long pipe or a breaker bar. bolt and crank are iron, you won't strip it. if you meant "how do i hold the engine in place while i do this", is it a manual or automatic transmission? for a manual put it in gear, put e-brake on and chock the wheels as best you can. for an auto remove the bell housing access plug and look for the hole in the flexplate, insert a stout 3/8" extension in the hole to keep the engine from turning over. this has been asked dozens of times as well, so there are plenty of useful threads on here if you run into issues or arent' comfortable with it. Link to comment Share on other sites More sharing options...
alexk02 Posted December 29, 2006 Share Posted December 29, 2006 Also, if you have a chain wrench (I got a 24" chain wrench from Harbor Freight for $20 including shipping), you can wrap the pulley with some old belts, secure them by duct tape for pulley protection and use that chain wrench to hold pulley in place. Same chain wrench can be used in the same manner for cam pulleys bolt tightening. It is quite simple for one person to do. If I could do it, I think anyone can. :cool: Good luck. Link to comment Share on other sites More sharing options...
porcupine73 Posted December 29, 2006 Share Posted December 29, 2006 Here's a pic of that 24" Harbor Freight chain wrench in use on the crank pulley on my '00obw. I'll be doing my '96 next and I think I'll try the 3/8" extension in the flexplate method. I don't like to use the chain wrench on the cam sprockets as I think it slightly deformed it. Also, it is fairly important to get the right torque on the crank pulley bolt when tightening. There are a number of posts showing how the crank keyway got all hogged out because the bolt loosened. Link to comment Share on other sites More sharing options...
outbackusjunkus Posted December 29, 2006 Share Posted December 29, 2006 I used a racheting strap, hooked under one frame rail, around the pully, then hooked to other frame rail. I cut a piece of serpentine belt to put around the pully first, for grip/to keep the strap from slipping. May sounds crazy but worked like a charm... Link to comment Share on other sites More sharing options...
Dickensheets Posted December 29, 2006 Share Posted December 29, 2006 I vote for the flexplate trick. Least amount of monkey motion. Link to comment Share on other sites More sharing options...
keltik Posted December 29, 2006 Share Posted December 29, 2006 I loosened mine using the "bump the starter" trick, and to tighten it i shoved the car in gear with a friend standing on the brake pedal. I just want to ask tho - how much force should i be putting onto that bolt to tighten it. Is it a case of just givin it hell or do i need a specific torque? I dont own a torque wrench and cant afford a good one, when it comes to important things like head bolts i can beg/steal/borrow one. Link to comment Share on other sites More sharing options...
porcupine73 Posted December 30, 2006 Share Posted December 30, 2006 The recommended torque depends on engine phase. For my '00obw it said to put oil on the threads first, torque to like 33 ft*lbs(f) first, then torque to like 138 ft*lbs or something making sure it turns at least 65 degrees. I used blue loctite instead of oil; 5000 miles so far no loosey. Anyway, there are stories out there about the crank pulley bolt loosening so it's not a bad thing to make sure is done right and maybe checked after some thousand miles. Link to comment Share on other sites More sharing options...
ericem Posted December 30, 2006 Share Posted December 30, 2006 The recommended torque depends on engine phase. For my '00obw it said to put oil on the threads first, torque to like 33 ft*lbs(f) first, then torque to like 138 ft*lbs or something making sure it turns at least 65 degrees. I used blue loctite instead of oil; 5000 miles so far no loosey. Anyway, there are stories out there about the crank pulley bolt loosening so it's not a bad thing to make sure is done right and maybe checked after some thousand miles. exactly what he said, i did just that, and 7000KM and did not loosen, with blue locktite. Im sure these bolts and threads can handle OVER 140FT-lbs. 138-140 is perfect. Link to comment Share on other sites More sharing options...
porcupine73 Posted December 30, 2006 Share Posted December 30, 2006 Actually ericm, some post you listed about using blue loctite was the reason I did it. Thanks for the tip! Link to comment Share on other sites More sharing options...
ericem Posted December 30, 2006 Share Posted December 30, 2006 Actually ericm, some post you listed about using blue loctite was the reason I did it. Thanks for the tip! no problem:) Link to comment Share on other sites More sharing options...
keltik Posted December 30, 2006 Share Posted December 30, 2006 Im sure these bolts and threads can handle OVER 140FT-lbs. 138-140 is perfect. So if ive grasped the laws of physics that would be the same as myself stood on the end of a foot long wrench? If thats the case i think ive got it covered......definately time to add a torque wrench to my tool kit. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now