Disassemble Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

Engine Front Cover (1) - Remove - Engine Front Cover Removal and Installation
Timing Chain - Remove - Camshaft Timing Chain Component Removal and Installation
{with Automatic Transmission}
1. Remove and DISCARD the automatic transmission flex plate bolts (1).
2. Remove the automatic transmission flex plate (2).
{with Manual Transmission}
1. Mark or scribe the end of the crankshaft and the manual transmission flywheel.
2. Remove and DISCARD the flywheel bolts (2).
3. Remove the manual transmission flywheel (1).
4. Note the location of the manual transmission flywheel balance weights, if applicable.
Install the GE-23907 Slide Hammer with Bearing Adapter
Clutch Pilot Bearing (1) - Remove and DISCARD
Remove the GE-23907 Slide Hammer with Bearing Adapter
Remove the EN-46106 Flywheel Holding Tool (1).
Vacuum Pump Bolt (1) - Remove
Vacuum Pump (2) - Remove
Fuel Injection Fuel Rail Noise Shield (1) - Remove
Cylinder Head Bolt (1) - Remove and DISCARD
Cylinder Head Bolt (2) - Remove and DISCARD [8x]
Cylinder Head (3) - Remove
Cylinder Head Gasket (1) - Remove and DISCARD
Cylinder Head Bolt (1) - Remove and DISCARD
Cylinder Head Bolt (2) - Remove and DISCARD [8x]
Cylinder Head (3) - Remove
Cylinder Head Gasket (1) - Remove and DISCARD
Fuel Injection Fuel Rail Noise Shield (1) - Remove
Crankshaft Sprocket (1) - Remove
Oil Pan Bolt (1, 2, 3) - Remove
Oil Pan (4) - Remove
NOTE:
Ensure proper use of room temperature vulcanizing (RTV) sealant. Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant

Remove any RTV sealant (1) from the oil pan (2) and mating surface using EN-28410 Gasket Remover (3).
Clean out debris from the bolt holes (4).
Oil Pump Bolt (1) - Remove
Oil Pump (2) - Remove
Crankshaft Rear Oil Seal Housing Bolt (1) - Remove

NOTE:

Use the pry points located at the edge of the crankshaft rear oil seal housing to separate the RTV sealant.

Crankshaft Rear Oil Seal Housing (2) - Remove and DISCARD

NOTE:

An arrow/dot showing proper piston orientation is located on the top of the piston.
If the connecting rod bearings have been used in a running engine, you must replace them with NEW connecting rod bearings for reassembly.

Before removing the connecting rods, check the connecting rod side clearance using the following procedure:
1. Tap the connecting rod to one end of the crankshaft journal with a dead-blow or wooden hammer.
2. Using feeler gauges, measure the clearance between the crankshaft counterweight and the connecting rod.
3. The connecting rod side clearance should not exceed specifications. Engine Mechanical Specifications
4. If the end play exceeds the specified limits, measure the width of the crankpin end of the connecting rod. Piston and Connecting Rod Overhaul
5. If the connecting rod width is significantly smaller than specified and severe wear is present on the side of the connecting rod, replace the connecting rod.
6. If the connecting rod width is within specification and excessive scoring is present on the crankshaft journals, replace the crankshaft.
Using a marker, number each piston face. Draw an arrow along the centerline of the piston pointing toward the front of the engine.

CAUTION:

Do not use a stamp, punch or any other method that may distort or stress the connecting rod or connecting rod cap. Extensive engine damage may result from a connecting rod that is distorted or stressed.

Mark the cylinder number on the connecting rod and the connecting rod cap with a scribe, paint stick or permanent marker.
CAUTION:
Powdered metal connecting rods have rod bolts which yield when torqued. If the rod bolts are loosened or removed the rod bolts must be replaced. Rod bolts that are not replaced will not torque to the correct clamp load and can lead to serious engine damage.

NOTE:
The bolts are single use and must be discarded before final installation.

Remove the connecting rod bolts (1).

NOTE:

The connecting rod caps must remain with the original connecting rod.

Remove the connecting rod cap (2).
Remove and DISCARD the lower connecting rod bearing (3).
Install the EN-46121 Connecting Rod Guide Pin Set (1) into the connecting rod bolt holes.
Using a hammer, tap lightly on the end of the EN-46121 Connecting Rod Guide Pin Set (2) to remove the piston and connecting rod assembly (1) from the cylinder bore.
DO NOT scratch the crankshaft journal or cylinder wall and DO NOT damage the oil jets when removing the connecting rod and piston assembly.
Remove the EN-46121 Connecting Rod Guide Pin Set (3) from the connecting rod bolt holes.
Remove and DISCARD the upper connecting rod bearing (1) from the connecting rod (2).
NOTE:
The bolts are single use and must be discarded before final installation.

Reattach the connecting rod cap (1) to the connecting rod (2) to prevent damage to their mating surfaces. The cap (1) and connecting rod (2) are a matched set and must be kept together.
Remove the crankshaft bearing cap side bolts (1 and 2).
Remove the crankshaft bearing cap outer bolts (3).
Remove the crankshaft bearing cap inner bolts (4).
NOTE:
The crankshaft bearing caps are machined with the engine block, for the proper clearances. Mark or identify each crankshaft bearing cap location and direction before removal. The crankshaft bearing caps MUST be installed to their original position and direction.

Mark the crankshaft bearing caps (1) to ensure they go back into same location.
Remove the crankshaft bearing caps (1) using the EN-6125-1B Slide Hammer Adapter (2) and EN-49102 Crankshaft Bearing Cap Remover (3).
Using two hands, lift the crankshaft (1) straight up from the engine block.
Place the crankshaft in a secure place.
Remove the crankshaft key (1) from the nose of the crankshaft, if damaged.
Crankshaft Upper Bearing (1) - Remove and DISCARD [3x]
Crankshaft Thrust Bearing (2) - Remove and DISCARD
Crankshaft Bearing Cap (2) - Remove [4x]
Crankshaft Lower Bearing (1) - Remove and DISCARD [4x]