Chrysler is paying to install a new cam (2005/2006 owners should read this) - Page 17 - JeepForum.com
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post #241 of 1818 Old 07-29-2010, 10:21 PM
bonza
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Quote:
Originally Posted by keithert View Post
Would a good synthetic oil help with this issue?
I dont know? maybe a slightly heavier viscosity than 10W-30.

is that oil on your pinion? it looks terrible or is it just the photo.
and it looks like the tips of the teeth are worn in the first image


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post #242 of 1818 Old 07-30-2010, 12:28 AM
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Most synthetic oils won't help this type of wear because they have very low ZDDP content.

The best oil to use to reduce wear on the CPS is a oil high in ZDDP AKA Zinc and Phosphorus.

For warmer climates go with Delo 15W-40 or in cooler climates go with Mobil One 5W-40 Turbo Diesel oil. Both have ZDDP contents in the range of 1200-1300PPM vs most regular and synthetic oils only have 700-800PPM.

And I know someone who doesn't understand oils and ratings is going to jump in and flame me about being the oils I recommended being "diesel oils". All I can say is go grab a bottle of "diesel oil" off the shelf and you will see a SM or SL API rating which means its just fine to run in a gas engine.

Heck even Harley Davidson specifies in their manual that if you need to put oil in your cycle and can't get their brand of oil then to ONLY use a diesel motor oil because of the robust additive package and ZDDP levels.

Or if your still firm about not running a diesel motor oil, you can buy bottles of ZDDP addative to bring the levels up to 1300PPM.


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post #243 of 1818 Old 07-30-2010, 05:09 AM
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Does the rotation of the cps affect timing like a conventional distributor? If it is rotated 1/16 inch during reassembly will that affect the timing? I'm positive the wheel inside it is in the original position but the wheel has about 1/16 inch of play against the gears. So when you line up the marks you made at the start the wheel can be in a very slightly different position.

Last edited by keithert; 07-30-2010 at 06:41 AM.
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post #244 of 1818 Old 07-30-2010, 07:12 AM
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It is called cam/crank sync. To get it close as possible you need a scan tool.
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post #245 of 1818 Old 07-30-2010, 08:42 AM
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Originally Posted by tshively View Post
It is called cam/crank sync. To get it close as possible you need a scan tool.
What does the scan tool do?

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post #246 of 1818 Old 07-30-2010, 08:55 AM
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Originally Posted by tshively View Post
It is called cam/crank sync. To get it close as possible you need a scan tool.
To install the new one? I got the old one dead on when reinstalling it..but that was because I marked everything really well. I guess I'll get my mechanic buddy with a scan tool to do it...it can't take but 5 minutes.
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post #247 of 1818 Old 07-30-2010, 11:31 AM
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Good to know. Thanks for heads up

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post #248 of 1818 Old 07-30-2010, 11:40 AM
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There is no need for a scan tool if you use a indexing pin.

When you take the cover off of the CPS assembly you will see a small round hole in the wheel that spins. You also have a small hole in the bottom of the housing the lower left part of it below the wheel if your looking at the assembly from over the passengers side wheel well.

All you need to do is SLOWLY turn the crank pulley with a wrench till the two holes line up. If you have a manual transmission you can just put it in gear and have someone slowly push while you watch for them to line up.

Once the two holes are lines up stick in a allen wrench that will give a nice snug fit.

Now you just unbolt the CPS keeper bolt and pull the assembly out. The new CPS assemblies come with a indexing pin installed in them. So all you have to so is slide the new one in and make sure it seats in the oil pump. Then tighten down the keeper and pull the indexing pin out and your done.

The indexing holes/pin method beats the hell out of trying mark the location with a magic marker.


FOG

In memory of Samantha Sue 1998 to Dec-16-10 at 2:15PM. She may have had 4 legs and a tail but she was the best friend I ever had and helped me through some really tough times. I hope to see her again one day.
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post #249 of 1818 Old 07-30-2010, 12:15 PM
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Where can I get an indexing pin?
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post #250 of 1818 Old 07-30-2010, 12:37 PM
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Sounds like it is just something like an allen wrench to put in the hole to keep either the rotor or the case from moving.

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post #251 of 1818 Old 07-30-2010, 12:41 PM
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Ah, well. It doesn't look like I'll be able to get a new one for a while. I've called 3 dealers and an online dealer and they don't have any in stock and the chrysler database is down and they can't see when new ones will come in. So hopefully my **** doesn't fail on my 5 hour drive to VA beach next week.
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post #252 of 1818 Old 07-30-2010, 12:43 PM
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Quote:
Originally Posted by chmo View Post
How do we know that a new replacement CPS pinion is made from the right "harder" material???
This is my question also. I just ordered the replacement (53010624AC) and will install as soon as I can. But are we sure it will last or am I just delaying the inevitable? Can someone who has installed a new one comment?

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post #253 of 1818 Old 07-30-2010, 01:19 PM
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Quote:
Originally Posted by 2006_Sport View Post
Where can I get an indexing pin?
As I said in my posting just use the snuggest fitting allen wrench. The new ones come with a plastic indexing pin but a allen wrench works just as well.

As far as the new ones lasting only time will tell. I installed a new one and inspected it after 5K miles and so far so good. I plan on pulling it out every 5,000 miles for about 20K miles to track and measure its wear.


FOG

In memory of Samantha Sue 1998 to Dec-16-10 at 2:15PM. She may have had 4 legs and a tail but she was the best friend I ever had and helped me through some really tough times. I hope to see her again one day.
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post #254 of 1818 Old 07-30-2010, 02:03 PM
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The title of this thread should be changed to "Chrysler isn't going to do **** about their problem and just let you handle it yourselves"

Yup, they won't hear anything from me regarding this, even the higher ups said so. When I find that new part it's going in.

I appreciate all the help Fog.
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post #255 of 1818 Old 07-30-2010, 02:34 PM
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Does anyone know the hardness specs for the gear? If so, I'd have the new CPS gear checked and if not to spec, perhaps have it hardened properly.
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2006 , 4.0 , camshaft , replacement , tj , warranty , wrangler

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