jimstrax wrote:
Hi..I've been working/overhauling engines for 45 years and I have never seen a tightening sequence as shown in the 2006 liberty factory manual. Saying that...The factory manual that I got off of Ebay ($225) is very incomplete. It leaves out a lot of things so I'm concerned about the sequence. AND it doesn't tell you where to start the sequence in foot pounds.. I sure would like some information from some of you engine builders. I've bought everything new for this engine. ($big bucks) liners, pistons, seals, gaskets,timing belt, crank turned, bearings,(mains and rods), Tnx Jim
The factory service manuals are online at:>
http://www.colorado4wheel.com/manuals/Jeep/KJ/They cover the head bolt tightening sequence, see section 9, pages 1616 & 1617 in the 2006 online FSM. >
http://www.colorado4wheel.com/manuals/J ... -KJ-SM.pdfThis is what the FSM says:
Cylinder Head Bolt Torquing Procedure
1. Tighten all cylinder head bolts starting from the center bolts, following the cylinder head scheme and the following
sequence: 3-2-1-10-9-8-7-6-5-4-11-12-13-14-15-16-17-18.
2. Without loosening any bolts, starting from the center bolts, tighten each bolt an additional 75° in the following
sequence: 10-9-8-7-6-5-4-3-2-1.
3. Tighten the lateral cylinder head bolts an additional 50° in the following sequence: 11-12-13-14-15-16-17-18.
4. Finally tighten all bolts an additional 75° in the following sequence: 10-9-8-7-6-5-4-3-2-1-11-12-13-14-15-16-17-
18..If you are using ARP Studs, this is the install torque for them came up by one of the members of LOST. (LMWatBullRun)
Use the same sequence as outlined in the FSM!
torques as follows:
torque to 100 fp in three steps. then torque all of the studs to 115 fp in FSM order. then do one last pass and torque the inner bolts to 130 fp, and the perimeter bolts to 120 fp in FSM order.
130 lb-ft for the bolts directly bordering the cylinders (two center rows) and 120 lb-ft for the outside rows.
_________________
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