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Old 04-19-2010, 04:36 PM   #1
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Used 2006 TJ purchase, BUT mech problems

I really want to get into the wrangler world, I found a 2006 Jeep Wrangler Automatic Unlimited. 53k miles and looks to be in great shape. However I had a tech check out the vehicle before I write a check and this is what he said.
**Found Oil pan leaking and Crank seal leaking **
Question: Is this a deal breaker ? Is this common in a jeep ?

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Old 04-19-2010, 05:01 PM   #2
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Oil pan and rear main seal leaks are very common . . . I'm not so sure about the crank seal.

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Old 04-19-2010, 05:17 PM   #3
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Ask the seller to deduct the cost of the repairs from the price.
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Old 04-19-2010, 05:32 PM   #4
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Crank seal = rear main seal. Common issues on most engines not just Jeep I6. Have your mechanic give you a quote to repair and look to reduce the price if you want. I would just consider that to be normal. I can't remember ever buying a used vehicle and not dropping the oil pan as soon as I got home anyway just to see if there was anything unusual in the pan.
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Old 04-19-2010, 06:04 PM   #5
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Originally Posted by D51_06TJ View Post
Crank seal = rear main seal. Common issues on most engines not just Jeep I6. Have your mechanic give you a quote to repair and look to reduce the price if you want. I would just consider that to be normal. I can't remember ever buying a used vehicle and not dropping the oil pan as soon as I got home anyway just to see if there was anything unusual in the pan.
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LOL . . . never heard it called that before . . . learn something new everyday around here! If that's the case, then I would not be concerned about it at all. I have an 06 and had to have my oil pan gasket and rear main seal replaced and just about a month ago, my buddy with another 06 had the same issue . . . we both had less miles than the one you are looking at. As mentioned, I would try to get a quote for the repair and use that to see if you can get the price lowered . . . or just factor that cost into the price to see if it's still a good deal. Good luck!!! LJ's are sweet . . . especially on 35+ tires!!!
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Old 04-19-2010, 06:41 PM   #6
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Since it's being discussed and "Opentop" may want to know also....how difficult is it to replace the rear-main seal instead of using a shop? Figured the oil pan gasket is pretty easy but not sure where the rear main seal even is.

Assuming its a do-it-yourself job, I say get the quote in order to receive the discount on purchase, then do job yourself....just my $.02

When you get it, dont forget to .....unlike the JK folks (Hmmm, why is that???).
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Old 04-19-2010, 08:40 PM   #7
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**Update** Quote from mechanic

I just received the fax from the Jeep Dealership to fix the oil pan and crank case seal. $495.
FYI, this was a auction vehicle from a Kia dealership and I took it to Jeep for a check up.
I would also like to know if these are DIYable..
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Old 04-19-2010, 09:03 PM   #8
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I wouldn't let a $500 repair be a deal breaker anyway. But that's me. Tell 'em to take it off the price, or fix it for you.. You'll love that LJ, I wheeled with one for the first time Saturday and that thing did crazy stuff... There's absolutely no where he couldn't go...
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Old 04-20-2010, 12:09 AM   #9
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To do the rear crank seal you have to drop the oil pan anyways which means a reseal there. All in all your looking about a 3 hour job.


The crankshaft rear main bearing oil seal consists of two half pieces of Viton with a single lip that effectively seals the rear of the crankshaft. Replace the upper and lower seal halves as a unit to ensure leak free operation.


Removal
1. Remove transmission inspection cover.
2. Remove oil pan.
3. Remove main bearing cap brace.
4. Remove rear main bearing cap (No.7).
5. Push upper seal out of the groove. Ensure that the crankshaft and seal groove are not damaged.
6. Remove lower half of the seal from the bearing cap.

Installation


1. Wipe the seal surface area of the crankshaft until it is clean.
2. Apply a thin coat of engine oil.
3. Coat lip of the seal with engine oil.
4. Carefully position the upper seal into the groove in the cylinder block. The lip of the seal faces toward the front of the engine.
5. Apply Mopar Gasket Maker sealer on both sides of cylinder block as shown in (Fig. 52). The dab of sealer should be 3 mm (0.125 inch) in diameter.
6. Apply Mopar Gasket Maker on the rear bearing cap (Fig. 52). The bead should be 2.3 mm (0.09 inch) in diameter. DO NOT apply sealer to the lip of the seal.
7. Position the lower seal into the bearing cap recess and seat it firmly. Be sure the seal is flush with the cylinder block pan rail.
8. Coat the outer curved surface of the lower seal with soap and the lip of the seal with engine oil.
9. Install the rear main bearing cap. DO NOT strike the cap more than twice for proper engagement.
10. Tighten all main bearing bolts to 108 Nm (80 ft. lbs.) torque.
11. Install the main bearing cap brace. Tighten nuts to 47 Nm (35 ft. lbs.) .
12. Install the oil pan gasket and oil pan.
13. Apply Mopar Silicone Rubber Adhesive Sealant on cylinder block to rear main bearing cap corners and cylinder block to front cover joints (four places) (Fig. 53)
14. Install transmission inspection cover.
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Old 04-20-2010, 06:24 AM   #10
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It is a pretty straight forward repair. Some tips....
- Support the Jeep by the frame with jacks stands, remove the front wheels and let the axle droop to give clearance to get the oil pan out.
- Drain the oil.
- Do make sure you mark the main cap (left / right) to make sure it goes back in the way it came out.
- Scrape the oil pan gasket surfaces (on the pan and the bottom of the block) to ensure a good seal when you reinstall.
- Clean the inside of the oil pan well.
- Use some gasket sealer on the pan gasket.
- Snug ALL of the oil pan bolts, then go around and tighten them down.
D
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Old 04-20-2010, 05:39 PM   #11
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Update if anybody cares.
I played hardball with the dealership and said that they needed to pay for the oil pan and crank case seals to be replaced.
They just called and said they authorized the repair and NOW I am a jeep owner. YEAH
Pick it up on Friday....
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Old 04-20-2010, 05:56 PM   #12
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Congrats! Never let a dealer push you around.

Pics are required upon acquisition of new Jeep.
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Old 04-20-2010, 06:08 PM   #13
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agreed, I want to see it!
also congrats and welcome to our world
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Old 04-21-2010, 09:47 AM   #14
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Congrats! I just picked up my 06 LJ a couple weeks ago and love it.
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Old 04-21-2010, 10:05 AM   #15
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Is my new 2006 Unlimited TJ an "LJ" ? What is the difference ? How can I tell ?
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Old 04-21-2010, 10:11 AM   #16
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Quote:
Originally Posted by Opentop View Post
Is my new 2006 Unlimited TJ an "LJ" ? What is the difference ? How can I tell ?
Unlimited=LJ Long Jeep
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Old 04-21-2010, 10:18 AM   #17
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Yes, pics are mandatory

Enjoy the auto LJ...

Every day that I drive my NV3550 I wish it was an autobox.
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Old 04-21-2010, 10:55 AM   #18
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Congrats . . . sounds like this worked out well . . . and now you don't have to worry about the seal leaking 3k after the purchase.

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