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Pulley crank bolt has come adrift... https://ausmini.com/forums/viewtopic.php?f=2&t=94225 |
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Author: | deluxe67 [ Tue Nov 15, 2016 11:30 am ] |
Post subject: | Pulley crank bolt has come adrift... |
Whilst warming the car up this morning I heard it start to make an odd rattling noise. Had a look and the crank bolt has come out and was clattering around! At a friends place so have no tools or manuals. Can someone please tell what size socket I need and what the bolt needs to be torqued up to. I'm guessing the radiator has to come out, bugger it! I imagine I also have to remove the starter motor and chock the flywheel when torquing the bolt? Lucky it didn't happen on the road.... Thanks Michael |
Author: | simon k [ Tue Nov 15, 2016 11:45 am ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
1 5/16" (34mm will do in a pinch) 60 lbft yep, radiator, starter motor... |
Author: | drmini in aust [ Tue Nov 15, 2016 11:48 am ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
1-5/16" (or 33mm) socket. 80ft/lb I use. Books say 70. Put Loctite 262 on the threads. I no longer use the lock washer, as they are useless Chinese cheese now. Yes, radiator out and chock the ring gear. |
Author: | deluxe67 [ Tue Nov 15, 2016 12:30 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Thanks guys. There goes my afternoon bugger it. Was hoping to watch the cricket this afternoon so now that debacle is over I have no excuses to put the overalls on... Locktite 262 is shall be, when I get some. The pulley itself doesn't seem to have moved so I'm hopeful nothing has been damaged. I'm also very grateful this didn't happen when I was pulling 7000 rpm yesterday. (was just checking the rev counter haha!). Actually I wanted to check the stealth box rpm limiter was doing it's job.. Thanks Michael |
Author: | deluxe67 [ Tue Nov 15, 2016 1:34 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
It would seem loctite 262 has been replaced by loctite 263? The loctite website says "heat is required for removal", yikes! Should that put me off using 263? And when you use the stuff, how much do you put on the bolt? A few dabs or more than that? Thanks Michael |
Author: | Lillee [ Tue Nov 15, 2016 2:44 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Nah don't need heat. Yes it is harder to remove. Enough to cover the threads, if you put too much it will just squeeze out and be wasted. If you put too little it won't hold. Just a drop on two sides of the thread near the tip should be enough to spread over the whole thing as you wind it in. |
Author: | deluxe67 [ Tue Nov 15, 2016 3:10 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Thanks for that Lillee, Just found out the largest socket we have is 1 1/4" and the loctite we have is 243 thread locker. Bugger again! Would it be appropriate (or stupid) if I used a large shifter (hate the things) and heave on it with the loctite? Bit hard to gauge 70 ft/lb with a shifter.... |
Author: | Lillee [ Tue Nov 15, 2016 3:26 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Are you in Sydney Michael? |
Author: | winabbey [ Tue Nov 15, 2016 3:30 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Lillee wrote: Are you in Sydney Michael? I was about to ask the same thing, and to suggest you put your location in your user profile so others are better placed to know if they can assist you with loan of tools or labour. ![]() |
Author: | TheMiniMan [ Tue Nov 15, 2016 3:34 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Just as a side note, (as the good Doc said) yes we also use loctite instead of the lock-washer & yes approx 75Lbs tighten But,,, (& here`s the side note) Some people , when re-grinding & hardening their crankshafts during a re-build they leave the crank pulley shims on the crank,,, so off the crank goes to be ground & hardened & of course the pissy little thin shims get hardened too now "IF" that`s happened , the shims will become very brittle & crack/break & fall out then the front pulley becomes loose (of course) Please remove all shims when sending cranks out to be hardened???!!!! class dissmissed ![]() |
Author: | deluxe67 [ Tue Nov 15, 2016 3:55 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
I'm in Bentleigh/ Caulfield in Melbourne, I'll update my profile. The pulley itself seems to be firmly fixed to the crank. The bolt looks fine but the "lock" washer is completely rooted. Re crankshaft shims and hardening, I don't know but the work was done by a well known reputable Mini engine shop... Do crankshafts necessarily get hardening treatment after a regrind? Thanks Michael |
Author: | drmini in aust [ Tue Nov 15, 2016 4:27 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Beg or borrow a socket. You won't get in there with a shifter. Loctite 243 is too weak. 262 or 263 is the go. No heat needed to remove. |
Author: | winabbey [ Tue Nov 15, 2016 4:32 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
deluxe67 wrote: I'm in Bentleigh/ Caulfield in Melbourne, I'll update my profile. I'm in Carnegie. You are welcome to borrow my 1-5/16" socket and tension wrench if you plan to do it yourself. |
Author: | deluxe67 [ Tue Nov 15, 2016 5:07 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Thanks for the kind offer Winabbey, I may have to do that. I'll be doing all this myself. Finally got the bottom hose off, now struggling with removing the radiator with the bottom shroud in the way.. After 35 odd years of owning Mini's I dread dealing with radiators (and exhaust systems!). The rally car I had 30 years ago had a "quick release" radiator. Wish I had that now, took less than 10 minutes to remove the lot. Why BMC couldn't design something like that is beyond me... |
Author: | FNQ [ Tue Nov 15, 2016 5:47 pm ] |
Post subject: | Re: Pulley crank bolt has come adrift... |
Did some earlier type crank bolts/ crank threads require the loctab as a spacer _ as the bolt could bottom out before tightening without one?>?? .. again not easy as an engine in situ job, but it might tbe worth trying to clean out the thread ( yet another tool to go hunting, or at least check the bolt isn't too long for the crank thread... ( someone trying in vain to impart knowledge to me may have mentioned this, or indeed i may have got it all mixed up....) but worth ensuring the bolt doesn't come loose again |
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