Engine Block Cleaning and Inspection
CLEAN AND INSPECT
CAUTION
To prevent possible gouging of the engine block
surfaces, use care when removing gasket and
sealing material.
1.
Clean all remaining sealing or gasket material
from sealing surfaces.
WARNING
Cleaning solvents can be flammable and toxic and
can cause skin irritation. When using cleaning
solvents, always follow the solvent manufactur-
er's recommended safety procedures.
2.
Clean engine block with solvent.
3.
Flush engine block with water or steam.
CAUTION
Clean all, debris and coolant from the engine
block cylinder head bolt holes. Failure to do so
may result in damaged threads, improperly tight-
ened fasteners or damage to components.
4.
Clean following engine block components:
• Cylinder bores
• Oil galleries and oil passages
• Scale and deposits from coolant passages
• Engine block cylinder head bolt holes.
5.
After cleaning engine block, spray or wipe cyl-
inder bores and machined surfaces with clean
engine oil.
6.
Inspect following areas, see Figure 28:
• Coolant jackets for cracks.
• Cylinder bores for scratches or gouging.
• Valve lifter bores for excessive scoring or
wear.
• Threaded holes for damage
• Crankshaft bearing webs for cracks
• Crankshaft bearing caps and bores for
damage
Crankshaft bearing bores should
be round and uniform when meas-
uring inside diameter (ID).
The surface where crankshaft
bearings contact crankshaft bear-
ing bore should be smooth.
If a crankshaft bearing cap is dam-
aged and requires replacement, re-
place bearing cap first, then re-
bore engine block crankshaft bear-
ing bores and check for proper
alignment. Finally, check crank-
shaft for proper clearances.
• Engine block core hole plug for damage
• Engine block for cracks for damage
• Engine mount bosses for damage
Engine Block Cleaning and Inspection 0600 SRM 1251
18
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