Head Gasket - JeepForum.com

 
LinkBack Thread Tools
post #1 of 4 Old 06-30-2013, 10:06 AM Thread Starter
dfk56
Registered User
2005 KJ Liberty 
 
Join Date: Jun 2013
Location: heathsprings
Posts: 1
Head Gasket

Daughter ran 2005 jeep liberty sport with 3.7 engine hot until it shutdown . Head gasket blown. Have drained all water out of engine and taken valve cover off. Ready to remove heads . Can someone explain to me how to remove timing chain so i can pull the head off ?

dfk56 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 06-30-2013, 12:14 PM
TwoBobsKJ
Senior Member
 
TwoBobsKJ's Avatar
2003 KJ Liberty 
 
Join Date: May 2011
Location: Northern
Posts: 776
Quote:
Originally Posted by dfk56 View Post
Daughter ran 2005 jeep liberty sport with 3.7 engine hot until it shutdown . Head gasket blown. Have drained all water out of engine and taken valve cover off. Ready to remove heads . Can someone explain to me how to remove timing chain so i can pull the head off ?
The timing chain cover must be removed so you can get to the hydraulic lash adjusters and the guides. Once the adjusters and guides are removed then the chain for the head you're working on can be removed. I've attached the appropriate pages from the Factory Service Manual with the head removal instructions. NOTE: Follow the instructions to the letter for setting the timing chains. If you don't your Jeep will never start and you'll need to tear it back down again.

Cylinder Head Removal and Installation - Jeep FSM

Timing Chain Installation - 3.7L

Bob

2003 Renegade, Black
- 3.7L, 42RLE, 4.10's, ARB Bull Bar, Smittybilt XRC 9500lb Winch, 4X Guard Trans skid, Skid Row Engine skid, Factory T-case & Tank skids, Custom BoulderBars, JBA Front Coilovers, OME 948 rear springs, Bilstein rear shocks, JBA A-Arms, Moabs with Goodyear Duratracs 265/70-16
TwoBobsKJ is offline  
post #3 of 4 Old 06-30-2013, 02:46 PM
olliehopnoodle
Registered User
1982 FSJ Cherokee 
 
Join Date: Sep 2012
Location: mesa
Posts: 1,190
I don't mean to be a bummer. You will want to get those heads check for warping. It's most likely not just a head gasket.

I just had the timing cover off my 3.7. I had the passenger side secondary timing tensenior go bad and had to replace it.

I didn't get a chance to remove the chains, which you will need to do in order to remove the heads. I did have to chase down a HLA that went bad as well. This required the removal of the rocker arms.

You might consider getting miller special tool 8516. This makes removeal/installation of the rocker arms much more easy:

https://millerspecialtools.spx.com/Detail.aspx?id=567

I also discovered the 'loan a tool' damper installer did not work. The fitting on the end won't slip into the crank. The factory bolt wasn't long enough to get the damper started. So I picked up a 40mm 1.5pitch 120mm bolt. I had to order on line. This allowed me to get the damper started without beating it with a hammer.

Fair warning. If you remove the secondary tensioners there is a plate behind them. So be careful not to let them drop into the oil pan. I didn't remove the primary one so I have no advice on that.

Finally, the timing chain cover doesn't have a gasket, special RTV is used. There is a kit at the local parts stores that include the 3 'o ring' gaskets for the water passage (one is not an O ring) and the right gasket RTV. The service manual said not to use 'oil based' solvents. I used rubbing alchohol and a dremel with a polishing brush, the white one, nothing abrasive.

Although I tried to drain the cooling system I still had coolant run into the engine when I removed the timing cover. Probably about a pint or so. So I drained the oil. It sat for a week or two before I got to draining it so I am pretty sure the water went to the bottom of the pan. I actually jacked up the front the the truck a little to help out. I loosened the bolt a little and let the water drain out. Once I saw oil I opened it up and let it pour out.

Good luck gettig the heads back on with the engine in the liberty. That looks like a tight fit.

82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
olliehopnoodle is offline  
post #4 of 4 Old 07-03-2013, 06:45 PM
PeteH
Registered User
 
Join Date: Jun 2013
Location: Palm Harbor
Posts: 7
Determine which head is compromised by doing a compression check. The passenger head is notorious for dropping valve seats, especially #2 intake. Remove the air filter, coolant reservoir, intake manifold, valve cover, etc.and flipped the A/c compressor out of the way. Remove the oil filler, and the A/C compressor mounting bolt. This gives access to the upper timing chain tensioner bolts that must be removed to free the chain and remove head. Turn the engine over until the front crank pulley mark is in alignment with the timing mark on the front cover. Confirm that the cam chain pulleys are level- see internet pics for description. Remove the camshaft chain pulley. Now the outboard belt tensioner (nearest the fender) on the passenger side can now be slid out. Remove the cam pulley and wire up the chain so it doesn't slide down into the block. Pull the head and vac out the rest of the water. Fix and reverse process.
PeteH is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome