Internal Combustion Engine |
Case Study # 218 |
1997 Corvette; 5.7 Liter Engine
OHV V8. The
equipment particle concetration (EPC) of 10,642 is much higher than
expected; this is the FIRST time this equipment was
tested and rated
CRITICAL October, 2001.
Recommendation: Consider scheduling this equipment for
maintenance action in the near future. Specifically abnormal medium
alloy steel Severe Sliding wear indicating a wiped crankshaft journal
bearing. |
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Analytical results show the
presence of 330 micrometer (um) medium alloy steel Severe Sliding
wear. Analysis also show the presence of 20um Copper Alloy (including
Brass & Bronze) as well as 20um White Non-ferrous metal (Aluminum),
which is of great concern. Test also show higher than expected
concentration of Lubricant Degradation (Varnish & Lacquer) as well as
Synthetic Fiber material. The fiber material appears to be from a
blown oil filter. Testing also show a high concentration of Black
Metal Oxides (Fe3O4). Black Metal Oxides form as
the result of heat due to friction from either improper or inadequate
lubrication. Use of a lubricant with too high of a viscosity is
detrimental. |
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Upon opening of inspection engine (V510588); the
main crankshaft journal bearing
was found to be wiped with significant striations.
Secondary Damage, was minimized. Repairs initiated & Downtime was
minimized. |
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CUSTOMER ESTIMATED
COST SAVINGS: Original Component
Savings:
0
Secondary Damage Savings:
0
Down Time Min./Production hrs. Savings:
0
Business Interruption:
0
RUSH Shipping Cost Savings:
0
Parts & Inventory Warehouse Savings:
0
Overtime Repair Savings:
0
Total SAVINGS:
$
Warranty Claim |
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Making your PM Program mean ..... "Profit Making"ä
Experience Since 1985 |
800.483.R7E3A2L5 |
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