LINES GP-TURBOCHARGER OIL 8N7712 - Caterpillar

Generator Set:
C18 (S/N: GBM1-UP)
Marine Engine:
C18 (S/N: GES1-UP; KJT1-UP; JKX1-UP)
C18 (S/N: J2K1-UP; T2P1-UP)
Description of Change: The new gear train has been developed to provide increased strength.Adaptable To: The new gear train replaces the former gear train on certain engine serial numbers. The gear train part numbers that are present on the engine now must be used for ordering replacements.Refer to Table 1 for the part numbers and details on the old and new gear trains.Note: The engine flash file has also changed to interpret the new 87 tooth camshaft gear. This new flash file can interpret both the 96 and 87 tooth count.Note: Changing to the new gear design is not recommended if a failure is encountered or during an overhaul. This engine news is to announce the design change and to reduce the chance of mis-matching components during service or repair.
Table 1
New Part Number     Old Part Number     Description     New Tooth Count     Old Tooth Count    
371-1438     195-0315     Spur Gear     36     40    
361-8234     153-9023     Gear     61     74    
361-8241     6I-4575     Gear     30     34    
361-8228     149-9110     Oil Pump Drive Gear     58     69    
361-8229     187-8981     Crankshaft Gear     66     80    
361-8233     187-8979     Gear As     88/58     105/63    
361-8240     249-3360     Camshaft Gear     87     96    
361-8238     130-4701     Gear As     51     56    
361-8236     6I-3625     Gear As     65     71    
375-4703     308-2632     Auxiliary Sea Water Pump Gp     36     40    
377-2391     352-0211     Water Pump Gp     61     74    
364-8936     151-5966     Stub Shaft As     -     -    
364-8935     158-3416     Stub Shaft     -     -    
355-6100     311-3932     Front Housing     -     -    This change is effective for the engine serial numbers listed in Table 2.
Table 2
Effective Serial Numbers    
Engine Serial Number     Associated Generator Set Prefix    
S/N:GPS817-UP     S/N:GBM    
S/N:GES938-UP     -    
S/N:J2K263-UP     -    
S/N:JKX1415-UP     -    
S/N:KJT210-UP     -    
S/N:T2P1833-UP     -