Cylinder Head Installation. Cadillac Concours 1997

For 1990-2009 cars

#### Tools Required

J 45059 Angle Meter

1. Ensure all the cylinder head locating pins are securely mounted in the cylinder block deck face.
2. Make sure any old thread sealant material is removed from the cylinder head bolts holes in the cylinder block.

Important: Failure to remove all the old thread sealant material from the cylinder block could cause false torque readings.

3. Install a new right cylinder head gasket using the deck face locating pins for retention.
4. Install a new left cylinder head gasket using the deck face locating pins for retention.
5. Align the cylinder head with the deck face locating pins.
6. Place the cylinder head in position on the deck face.

Important: DO NOT reuse the old M11 cylinder head bolts.

7. Install new M11 cylinder head bolts (1) in the cylinder head.
8. Install the M6 cylinder head bolts (2) at the front of the cylinder head.
9. Repeat these procedures for the remaining cylinder head.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

10. Tighten the left cylinder head bolts in the sequence shown.

10.1. | First Pass

Tighten
Tighten the left cylinder head M11 cylinder head bolts to 40 N·m (30 lb ft ) in the sequence shown.

10.2. | Second Pass

Tighten
Tighten the left cylinder head M11 cylinder head bolts an additional 70 degrees in the sequence shown using the J 45059 .

10.3. | Third Pass

Tighten
Repeat the sequence turning each bolt another 60 degrees.

10.4. | Final Pass

Tighten
Repeat the sequence again turning each bolt a final 60 degrees (total 190 degrees).

11. Tighten the M6 bolts at the front of the cylinder head.

Tighten
Tighten the M6 cylinder head bolts to 12 N·m (106 lb in).

12. Tighten the right cylinder head bolts in the sequence shown.

12.1. | First Pass

Tighten
Tighten the right cylinder head M11 cylinder head bolts to 40 N·m (30 lb ft) in the sequence shown.

12.2. | Second Pass

Tighten
Tighten the right cylinder head M11 cylinder head bolts an additional 70 degrees in the sequence shown using the J 45059 .

12.3. | Third Pass

Tighten
Repeat the sequence turning each bolt an another 60 degrees.

12.4. | Final Pass

Tighten
Repeat the sequence again turning each bolt a final 60 degrees (total 190 degrees).

13. Tighten the M6 bolts at the front of the right cylinder head.

Tighten
Tighten the M6 cylinder head bolts to 12 N·m (106 lb in).

14. Install the oil gallery plugs at the front and rear of the cylinder head.

Tighten
Tighten the oil gallery plugs to 12 N·m (106 lb in).