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| help! http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=75469 |
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| Author: | adoubu77 [ Mon Jun 03, 2013 4:43 pm ] |
| Post subject: | help! |
Trying to change the timing belt and we can not get the fan off! Any ideas or tips?? |
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| Author: | papaindigo [ Mon Jun 03, 2013 5:12 pm ] |
| Post subject: | Re: help! |
Chuckle you are not the first one. See http://www.beesvillebeefarm.com/jeep.html for a bit of a how to. As I recall the fan nut is 36mm and you can either use the allen key trick or a "long" socket on the same nut to hold the fan base in place while you persuade the nut to come loose. I have the Lislie pneumatic fan removal tool and even that won't just pop it off, the post uses a palm nailer, some report using a really long shaft wrench or a small sledge hammer on the wrench handle. On reinstall use a bit of antiseize and just spin the fan on, no need to tighten it once it bottoms out as it spins in the tighten direction (PS put on a Hayden 2905 fan clutch while in there) Once it starts to come loose undo the 2 fan shroud bolts (carefully save them as length matters); put a towel or piece of cardboard in front of the fan to prevent damage to the radiator as you have to remove the fan and shroud together (unless you have done a fan shroud mod per viewtopic.php?f=98&t=64278&p=709322#p709322); as I recall you will have to tilt the shroud left and right to get the bolt tabs to clear. Note the ac line can be unclipped and simply lifted up and back over the engine and you should use a couple of zip ties to capture the fan shroud nuts in their recesses. |
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| Author: | Glend [ Mon Jun 03, 2013 6:37 pm ] |
| Post subject: | Re: help! |
I always use the 13mm socket trick (and a deep airtool socket seems to be a better fit on mine), pushed through one of the pulley holes onto the bracket mounting bolt head behind the pulley, when rotated this socket will lock the pulley in place and allow you to knock the big nut loose with a big adjustable wrench placed over the nut (counter- clockwise), yes ou will need to hit it with a hammer in the counterclockwise direction. You will probably have to do all the lossening with the wrench as they don't just suddenly become finger tight when you break them loose. Fan shroud mod is a must, from my perspective. |
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| Author: | adoubu77 [ Mon Jun 03, 2013 7:39 pm ] |
| Post subject: | Re: help! |
Well....after 5 hours or wrenching and hitting we still could not get it loose. My buddy has been working on cars for over 20 years and he's never run into a problem like this before. Anyone in the central IL area wanna try to tackle it?? |
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| Author: | naturist [ Mon Jun 03, 2013 8:01 pm ] |
| Post subject: | Re: help! |
Wow, that's TIGHT. I guess the good news is that it wasn't about to fly off in use. Of course, now that you've loosened it up, the next guy to take a swing at it, it will come off with just a twist of the wrist. Isn't that the food jar lids do it? |
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| Author: | Glend [ Mon Jun 03, 2013 8:14 pm ] |
| Post subject: | Re: help! |
Are you sure your turning it in the correct direction? |
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| Author: | adoubu77 [ Mon Jun 03, 2013 9:56 pm ] |
| Post subject: | Re: help! |
Yes counterclockwise. |
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| Author: | LMWatBullRun [ Mon Jun 03, 2013 10:02 pm ] |
| Post subject: | Re: help! |
suggest a liberal application of Kroil, repeated twice daily for a couple of days. I used the largest adjustable I have with a titanium cheater on the fan, and a deep impact 13 MM with a breaker bar to hold it in position, and it did come off. Did not take time for Kroil. |
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| Author: | DOC4444 [ Mon Jun 03, 2013 11:35 pm ] |
| Post subject: | Re: help! |
If you are knocking the wrench handle to your left when you are facing the rear of the vehicle when standing in front of it, you ARE turning it in the correct direction. If you are not turning it the wrong way, the most likely cause of its recalcitrance is that you are not using a totally solid method of holding the pulley absolutely motionless when you whack the wrench handle. If there is just a few thou of movement, much of the impact force is dissipated, defeating what you are trying to do. I use a 5/8" combination wrench with a bolt, nut and washers on the box end. The open end hooks into one of the holes in the front of the hub. This provides rock solid locking so ALL of the force of the blow is transferred to nut to break it free. Another possibility is that someone made a well-intentioned, but totally misguided move by using something like red locktite the last time it was assembled. This unit tightens itself automatically in use, so no thread locker needed. I use lots of anti-seize to facilitate removal the next time. Rust is also a possibility, but unusual on these specific parts. Sorry this is fighting you so hard. DOC |
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