Question about 1999 Jeep Grand Cherokee

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What is the tension on cylinder head bolts for a jeep grand cherokee 307935 4 litre, 6 cylinder, 1999, petrol motor.

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  • Anonymous Mar 17, 2014

    change master cylinder on a 2003 grand cherokee 4.7

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Would like to state the cylinder head Torque Values, Torque Pattern, and Tightening Sequence, plus additional tips.
[I know it's more than you asked for, but after you read the entire answer here, I believe you'll know why I stated it this way]

Torque Pattern:
Top of head starting from Left going Right,
8, 4, 1, 5, and 9
Bottom of head, (Exhaust manifold side), starting from Left going Right,
7, 3, 6, 2, and 10

You're supposed to use old bolts with the head cut off, (Alignment Dowels), in bolt holes 8 and 10. This way you goop the gasket, and install it, then slide the head on. Place the head bolts in, SNUG them down. Remove those alignment dowels. Then put bolts 8 and 10 in place.
After the head of the bolt is cut off, you saw a slot in the top of the bolt. Helps when you remove it. (Have any old bolts that are long enough for this, and have the correct threads?)

=>Coat No.7 bolt with thread sealant.

Tightening Sequence:
Step 1: Tighten all bolts to 22 Foot Pounds. (30Nm) (Using the above Torque Pattern)

Step 2: Tighten all bolts to 45 Foot Pounds. (61NM)

Step 3: Tighten 1 Through 6 <- to 110 Foot Pounds. (149Nm) DO NOT TIGHTEN No.7 bolt yet!

Step 4: Tighten No.7 bolt to 100 Foot Pounds. (136Nm) DO NOT TIGHTEN further! It only tightens to 100 Ft.Lbs. (136Nm)

Step 5: Tighten bolt 8 Through 10 to 110 Foot Pounds. (149Nm)

Step 6: Repeat Steps 3 , 4, and 5


Posted on Sep 05, 2009

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Coat threads of left hand front bolt with sealant: 1st - step; - 22 ft./lbs. 2nd - step; - 45 ft./lbs. 3rd - step, all bolts except L.H. front bolt; - 110 ft./lbs. 4th - step, L.H. front bolt; - 100 ft./lbs. What is the tension on cylinder head bolts for a - fig100.png

Posted on Sep 05, 2009

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