Cylinder Block Assembly: Testing and Inspection

1. Remove the cooling jacket plugs. Complete the following steps:
a. Obtain a suitable self-threading screw.
b. Drill a hole into the core plug.
c. Install the self-threading screw.
d. Pry or pull on the screw in order to remove the core plugs.





2. Remove the oil gallery plugs.
3. Clean the sealing material from the mating surfaces.
4. Boil the cylinder block in caustic solution.
5. Flush the cylinder block with clean water or steam.
6. Clean the cylinder bores.
7. Clean the oil galleries and the passages.
8. Scale the deposits from the coolant passages.
9. After cleaning the engine block, spray or wipe the cylinder bores and the machined surfaces with clean engine oil.
10. Inspect the following parts:
- Core plug bores for damage
- Valve lifter bores for excessive scoring or wear
- Block for cracks or damage
- Cylinder walls for scratches or gouging
- Coolant jackets for cracks
- Crankshaft bearing webs for cracks
- Engine mount bosses for damage
- Crankshaft bearing bores for damage
- Crankshaft bearing caps for damage
- The crankshaft bearing bores should be round and uniform when measuring the inside diameter (ID).
- The surface where the crankshaft bearings contact the crankshaft bearing bore should be smooth.
- Note if a crankshaft bearing cap is damaged and requires replacement. Replace the crankshaft bearing cap, and check the bearings for proper clearances.