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Removing head on an '02 2.4 N/A

 
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Old 16 Apr 2017, 05:41 pm
RVC RVC is offline
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Default Removing head on an '02 2.4 N/A

This is a new thread starting where my last thread ("Won't start after new timing belt and related") left off.

I assumed I needed to remove the head for a valve job which I have been attempting to do. I have followed the instructions in the PDF (01-04CPTC) and have done everything it said. It said to disconnect the exhaust pipe from the manifold and as far as I can tell the manifold is the only thing still connected to the head.

The head won't budge. Knowing the head is made out of aluminum I haven't tried to use much force for fear of cracking or warping it. If someone can tell me how to get the head off I will definitely appreciate it.

Thank you!

RVC
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Old 16 Apr 2017, 07:22 pm
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Default Re: Removing head on an '02 2.4 N/A

If all the head bolts are removed then it should come off. I like to use a dead blow hammer to beat on it as much as needed to convince it to release the bond. Dead blow is a soft faced hammer, causes no damage. The vibrations break the bond.
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Old 16 Apr 2017, 08:59 pm
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Default Re: Removing head on an '02 2.4 N/A

So it's as simple as that. Whacking it with a dead blow hammer!

Thanks very much for your response.

RVC
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Old 16 Apr 2017, 09:21 pm
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Wink Re: Removing head on an '02 2.4 N/A

Quote:
Originally Posted by RVC View Post
This is a new thread starting where my last thread ("Won't start after new timing belt and related") left off.

I assumed I needed to remove the head for a valve job which I have been attempting to do. I have followed the instructions in the PDF (01-04CPTC) and have done everything it said. It said to disconnect the exhaust pipe from the manifold and as far as I can tell the manifold is the only thing still connected to the head.

The head won't budge. Knowing the head is made out of aluminum I haven't tried to use much force for fear of cracking or warping it. If someone can tell me how to get the head off I will definitely appreciate it.

Thank you!

RVC
You might want to verify the elbow support bracket, in figure156, page9-224, of the exhaust manifold removal procedure, is unbolted from the block or exhaust manifold. Otherwise it won't budge and you might damage something. Even after all is disconnected it may need a bit of persuasion.



Here is a video clip that might be useful, specifically at the 24 minute mark of the video.

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Last edited by Imakenocents; 20 Apr 2017 at 12:24 pm.
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Old 17 Apr 2017, 06:11 am
RVC RVC is offline
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Default Re: Removing head on an '02 2.4 N/A

Thank you. In fact I just noticed that bracket over on figures 130, 131 on pages 9-140, 141. I appreciate the help.

RVC
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Old 22 Apr 2017, 01:46 pm
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Default Re: Removing head on an '02 2.4 N/A

The head is off and is being gone over at a local machine shop. Should be able to pick it up Monday. In the meantime I've been checking out the manual for installing the head back on the block.

On page 9-178 the instructions are to tighten the bolts in sequence and incrementally, first to 25 ft. lbs., second to 50 ft. lbs., third to 50ft. lbs. again, and then an additional 1/4 turn.

I'm wondering about the third torque to 50 ft. lbs. Does that mean to check it to make sure it was at 50 ft. lbs. or is that a typo?

Thanks.

RVC
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Old 22 Apr 2017, 04:17 pm
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Default Re: Removing head on an '02 2.4 N/A

Quote:
Originally Posted by RVC View Post
The head is off and is being gone over at a local machine shop. Should be able to pick it up Monday. In the meantime I've been checking out the manual for installing the head back on the block.

On page 9-178 the instructions are to tighten the bolts in sequence and incrementally, first to 25 ft. lbs., second to 50 ft. lbs., third to 50ft. lbs. again, and then an additional 1/4 turn.

I'm wondering about the third torque to 50 ft. lbs. Does that mean to check it to make sure it was at 50 ft. lbs. or is that a typo?

Thanks.

RVC
From the Service Manual for my PT on cylinder head reinstallation:

"4. Tighten the cylinder head bolts in the sequence
shown. Using the 4 step torque-turn method,
tighten according to the following values:
* First: All to 34 Nm (25 ft. lbs.)
* Second: All to 82 Nm (60 ft. lbs.)
* Third: All to 82 Nm (60 ft. lbs.)
CAUTION: Do not use a torque wrench for the
Fourth step.
* Fourth: Turn all bolts an additional 1/4 Turn"

Since my manual has the same torque value for steps 2 and 3, like yours, I would say it is just a recheck.
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Old 22 Apr 2017, 05:02 pm
RVC RVC is offline
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Default Re: Removing head on an '02 2.4 N/A

Yes, that makes sense. It's interesting that your final two torques are to 60 instead of my 50 ft. lb. Anyway, I'll go with 50, and thanks for your response.

RVC
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Old 22 Apr 2017, 05:25 pm
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Default Re: Removing head on an '02 2.4 N/A

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Yes, that makes sense. It's interesting that your final two torques are to 60 instead of my 50 ft. lb. Anyway, I'll go with 50, and thanks for your response.

RVC
What are you using for a manual (Chrysler Service Manual, Haynes, etc)? If something other than a Chrysler manual, you might want to confirm the torque value with a second source.
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Old 22 Apr 2017, 06:36 pm
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Default Re: Removing head on an '02 2.4 N/A

I'm using the "Free 01-04 Cruiser Shop Manual" in the second sticky from the top in the Tech & Performance Forum. Apparently it is the genuine shop manual and is very helpful.
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