Service Procedure
1. Verify coolant loss is due to leakage past the head gasket following the procedure outlined in Section 03-03 of the appropriate Service Manual.2. Remove cylinder head and clean gasket surface following the procedure outlined in Section 03-01 of the appropriate Service Manual.
3. Check cylinder head flatness following the procedure outlined in Section 03-00 of the appropriate Service Manual.
4. Replace the cylinder head gaskets and cylinder head bolts.
FWD 3.8L:
5. Reassemble and torque the new head bolts to the following specifications. Torque all bolts in numerical sequence (Figure 1) in three steps as follows:
^ 20 N.m (15 lb-ft)
^ 40 N.m (30 lb-ft)
^ 50 N.m (37 lb-ft)
6. In numerical sequence, retorque the bolts per the following Steps:
LONG BOLTS (Bolt Numbers 1, 3, 5, 7):
a. Loosen long bolt and back out 2-3 turns.
b. Retorque long bolt to 40-50 N.m (30-37 lb-ft).
c. Rotate long bolt an additional 175-185 degrees (approximately 1/2 turn).
d. Go to the next bolt in sequence.
SHORT BOLTS (Bolt Numbers 2, 4, 6, 8):
a. Loosen short bolt and back out 2-3 turns.
b. Retorque short bolt to 20-30 N.m (15-22 lb-ft).
c. Rotate short bolt an additional 175-185 degrees (approximately 1/2 turn).
d. Go to the next bolt in sequence.
The Head Gasket And Bolt Kit (F5PZ-6051-AA) contains the following:
^ One (1) Head Gasket
^ Four (4) Short Head Bolts (M11x1.5x81)
^ Four (4) Long Head Bolts (M11x1.5x102)