How to replace Cylinder Head on Cadillac Catera?

The Cylinder Head Replacing for Catera car model is provided here in this chapter.
Its complete cylinder head removal and installation procedure with appropriate diagrams for additional help.


Cylinder Head
REMOVAL & INSTALLATION Procedure for you is as follows:-----

1. Drain the engine coolant.
2. Relieve the fuel system pressure.
3. Remove or disconnect the following: 
   
   
   Intake plenum

   Intake air resonator 
   
   
   

   Fig. Intake air resonator and related components
   
   
   
   
   Intake manifold and spacer

   Both Engine Coolant Temperature (ECT) sensor electrical connectors

   Coolant crossover

   Ignition coil assembly

   Camshaft cover

   Front timing belt cover
4. Position the crankshaft 60 degrees Before Top Dead Center (BTDC) to avoid contact between the valves and the pistons. 
   
   
   
   Fig. Before removing the timing belt, be sure to turn the crankshaft 60 degrees BTDC to avoid valve-to-piston contact and subsequent engine damage.
5. Remove or disconnect the following:
   
   
   Timing belt

   Timing belt tensioner bracket

   Four camshaft gears

   Water pump

   Rear timing belt cover

   Camshaft Position (CMP) sensor electrical connector

   Exhaust camshaft

   Coolant pipe/engine lift bracket from the cylinder head

   Oil level indicator tube

   Upper radiator hose from the coolant pipe

   Coolant pipe

   Exhaust manifold from the cylinder head

   Cylinder head

To install:

Fig. Proper head gasket installation position-right cylinder head

Fig. Proper head gasket installation position-left cylinder head

Fig. Cylinder head torque sequence-left cylinder head

Fig. Cylinder head torque sequence-right cylinder head

NOTE

Be sure to use new cylinder head bolts when installing the cylinder head. The old bolts have been stretched and are not reusable.

1. Install a new cylinder head gasket.
2. Install the cylinder head.
3. Install new cylinder head bolts and tighten the bolts as follows:
   1. Step 1: Torque the bolts to 18 ft. lbs. (25 Nm).
   2. Step 2: An additional 90 degrees.
   3. Step 3: An additional 90 degrees.
   4. Step 4: An additional 90 degrees.
   5. Step 5: An additional 15 degrees.
   6. Step 6: An additional 15 degrees.
4. Install or connect the following:
   
   NOTE

   An oil and filter change is recommended.
   
   
   
   
   Exhaust manifold using a new gasket. Torque the nuts to 15 ft. lbs. (20 Nm).

   Coolant pipe with new O-rings

   Oil level indicator tube

   Coolant pipe/engine lift bracket. Torque the bolt to 15 ft. lbs. (20 Nm).

   Upper radiator hose to the coolant pipe

   Exhaust camshaft. Torque the bearing cap bolts to 71 inch lbs. (8 Nm).

   CMP electrical connector

   Rear timing belt cover. Torque the bolts to 71 inch lbs. (8 Nm).

   Water pump. Torque the bolts to 18 ft. lbs. (25 Nm).

   Camshaft gears. Torque the bolts to 37 ft. lbs. (50 Nm) plus a 60 degree turn, plus another 15 degree turn.

   Timing belt tensioner bracket. Torque the bolts to 30 ft. lbs. (40 Nm).

   Timing belt

   Front timing belt cover. Torque the bolts to 71 inch lbs. (8 Nm).

   Left camshaft cover with new O-rings and gaskets. Torque the fasteners to 71 inch lbs. (8 Nm).

   Ignition coil assembly

   Coolant crossover. Torque the bolts to 22 ft. lbs. (30 Nm).

   Both ECT sensor electrical connectors

   Intake manifold spacer. Torque the bolts in a spiral direction, starting from the inside and working outward to 15 ft. lbs. (20 Nm).

   Intake manifold. Torque the bolts to 15 ft. lbs. (20 Nm).

   Intake air resonator. Torque the nuts to 27 inch lbs. (3 Nm).

   Intake plenum. Torque the bolts to 71 inch lbs. (8 Nm).

   Negative battery cable
5. Refill the cooling system.
6. Start the engine and inspect for leakage.
7. Inspect all fluid levels and top off, if necessary.

These details will help.

Thanks.           

FOR MORE HELP GO TO: ---

Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html