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New timing belt, does bolt in crankshaft need to be removed
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=85502		 Page 1 of 1
Author:  ernest [ Thu Oct 27, 2016 4:23 pm ]
Post subject:  New timing belt, does bolt in crankshaft need to be removed
Hello, I'm replacing the timing belt on a 2006 Jeep CRD. I have removed everything except for the crankshaft pulley. I removed the 4 ten mm bolts. I'm told that the 21 mm bolt does not need to be removed. However the crankshaft pulley is not moving. Does the 21 mm bolt need to come out or is something else holding the pulley in place. Thankyou.
Author:  blk05liberty [ Thu Oct 27, 2016 5:02 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
The 21mm does not need to come off. Your pulley should come right off, but sounds like yours is seized on a little.
Author:  ernest [ Thu Oct 27, 2016 5:10 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
I'm placing a piece of lead as a cushion on the pulley and pounding the lead with an 8 ounce hammer. Nothing is moving. I do not want to mar the pulley. Thanks for the info. I get a larger hammer.
Author:  blk05liberty [ Thu Oct 27, 2016 5:31 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
If you have one, use a dead blow hammer. Good luck! I just did my belt a couple weeks ago
Author:  Locked KJ [ Thu Oct 27, 2016 6:27 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
I had to give mine 1 good blow with a 4 lb lump hammer and it popped right off. The small hammer just wasn't doing it. Don't forget some pb blaster.
Author:  geordi [ Thu Oct 27, 2016 6:33 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
If brute force isn't working, you aren't using enough.

Large prybar (screwdriver) between the pulley and the inner cover. Do it on the outside edge of the cover where there is some support, and bang the screwdriver in between the cover and the pulley. It should push it right off.

Have some cardboard against the radiator to protect it. You won't hurt the pulley itself.
Author:  ernest [ Sun Nov 06, 2016 8:27 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
So I'm still putting the Jeep back together. I lost the timing relationship of the crankshaft to the camshafts. It was easy to pin the intake camshaft. The exhaust camshaft was harder but I finally have it pinned. The next step is to rotate the crankshaft in the direction of rotation when running to the proper three oclock mark and/or lining up the holes in the bellhousing and flex plate. When I rotate the crankshaft it locks up. It must be up against one or more valves. I know I can rotate in the opposite direction. If I rotate in the opposite direction will I get to the three oclock position or will it bind again. This situation tells me I should have had the crankshaft timed before working on the camshafts. Thankyou.
Author:  ernest [ Sun Nov 06, 2016 8:56 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
I'm asking what to do to get this working again. Thankyou.
Author:  jws84_02 [ Sun Nov 06, 2016 8:58 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
You can just unlock the camshafts and let all the valves back up. Then set the crank, then re pen the camshafts
Author:  Jsamps1345 [ Sun Nov 06, 2016 9:05 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
I could be wrong but when I just did mine, I got the crankshaft into position first and then locked the camshafts. This way when I turn the camshafts to get them into position there is no chance of a valve contacting a piston.

Sent from my XT1254 using Tapatalk
Author:  WWDiesel [ Sun Nov 06, 2016 9:15 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
ernest wrote:
This situation tells me I should have had the crankshaft timed before working on the camshafts.

That is correct, having the crankshaft flywheel pinned in the correct position will allow you to rotate the cams to the correct position to pin them as required for proper timing.....
With the crankshaft in the proper pinned position, all the pistons are at half travel in their respective bores so rotating cams is not an issue as the valves will not be able to contact the pistons! :wink:
Author:  TKB4 [ Sun Nov 06, 2016 9:32 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
May not matter now but did you lock the cam gears? Did you loosen the cam gear nuts? Did you use something like drill bits or a screw in pin to hold cams? If you torqued the cam nuts have you verified that the pins have not broken? This gets confusing depending on nomenclature etc. Did you put witness marks? If so did you count on these to be accurate on cam ? They won't be if you loosened nuts withough gear lock in place.
Author:  TKB4 [ Sun Nov 06, 2016 9:35 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
WW Diesel is correct. Questions were mainly to see what might have caused the problem to prevent next time.
Author:  ernest [ Sun Nov 06, 2016 10:19 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
I bought some pins from the internet. I did not remove the camshaft timing belt gear. When I un pin the camshafts where do I rotate the camshafts. With the pins in place they are positioned at 90 degrees ATDC. Where do they need to be so that the valves dont interfere with the crankshaft.
Author:  jws84_02 [ Mon Nov 07, 2016 8:15 pm ]
Post subject:  Re: New timing belt, does bolt in crankshaft need to be remo
You should remove the cam gears. Might as well replace the water pump while your in there. But to answer your question, once you remove the pins they should roll themselves off the 2 valves they are on. With the cam gears off you'll be able to see the key ways the shafts have. The intake will need to be at 9 o'clock to get back locked and the exhaust cam will be at 3 o'clock
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