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Old 02-23-2012, 04:26 PM   #1
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Installing new OPDA question

I pulled my OPDA on my new-to-me '05 Rubi and noticed some wear along with a ticking noise, and I also have 131k on it.

So I'm planning on installing the new one in the same manner that I took the old one out and inspected it; making sharpie marks and lining them up (I watch the youtube video).

However, since it's a new one, I was just going to use the old and it's asymmetric notch marks and rotate the new one to match up there and then put a sharpie mark that was in the same place.

If I do this, then I shouldn't have to worry about timing or relearning cam sensor, etc., right? It should work if I understand it correctly. Please let me know if I'm missing something and making a big mistake.

Thanks,

Wes
Salt Lake

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Old 02-23-2012, 04:53 PM   #2
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Wes, was that the first OPDA, I think that's the most mileage I've heard of on a 05/06.
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Old 02-23-2012, 04:57 PM   #3
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I forgot to add, go to jeepforum.com and you can find all you need to know on this.
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Old 02-23-2012, 05:46 PM   #4
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Is it the first? Not sure, because I just bought it and I took a chance on a Jeep with very limited service records.

I read a lot on the long thread on jeepforum, but I wasn't sure about installing a new one, but that thread is about 200 pages, so I could have missed it. I pulled my old one out and put back in with no problems, so it seems that if I rotate and line up the notches I'll be fine.

Wes

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Old 02-23-2012, 11:46 PM   #5
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It should work fine. The first page of the long thread has all the info. If you get a P0016 code when the engine warms up to 160║ then you may be off a bit. I've talked a few guys through it if that happens. Not the end of the world. Since the new one comes with an alignment pin installed, you can always turn your engine over with a socket ‘til the holes in the old one line up before pulling it. Note how far it rotates as you pull it. Then leave the pin in the new one & drop it in (rotate as you go). Remove the pin after you tighten the hold down bolt. PM me with your # if you have trouble.


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Old 02-24-2012, 10:50 AM   #6
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That makes sense, especially lining up the holes by rotating the engine. So how do you rotate the engine with a socket? I've got the 1600 pg. service manual, does it describe it there?

Thanks!
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Old 02-25-2012, 12:26 AM   #7
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Its called the TDC method. If you have the FSM its on page 8I-11. Use the socket on the front pulley nut (3/4" I think). Turn the engine clock-wise to TDC. Unlike the FSM picture, there is a single pointer that lines up with a small notch in the pulley. Its easier if you have someone to turn & someone to watch the OPDA for the holes to line up. If you have a manual trans you can rock it til you're close. You don't really have to pin it to take it out but you can use the pin from the new unit to get a more exact alignment before pulling it.

Its hard to see the marks unless you take the belt off but mostly you are looking for the holes to line up not so much the mark's exact position.

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