SEAL-O-RING 8T6850 - Caterpillar

Engine:
3508B (S/N: S2A1-UP; S2B1-UP)
3512B (S/N: S2G1-UP; S2H1-UP)
3512C (S/N: SLM1-UP; E3Y1-UP)
3516B (S/N: S2P1-UP; S2R1-UP)
3516C (S/N: JTS1-UP; TTY1-UP)
Engine News SEPD9963, 10 October 2014, "New Software Is Used on Certain 3500 Commercial Engines". The original article has been revised to update the parts table, refer to the information below.Description of Change: The new software provides the ability for the engine to default to rated speed during a loss of throttle signal event. Also, the oil temperature transfer function now matched the as shipped oil temperature sensor.Adaptable To: The new software replaces the former software and is adaptable back to first production on the serial numbers listed above. Refer to Table 2 for a list of the new and former software part numbers.
Table 1
New Software Part Number     Former Software Part Number    
445-0295     362-3092    
451-2433     348-9872    
451-5848     391-9018    
457-2204     344-0321    
457-2205     344-0317    
457-2206     344-0320    
457-9039     424-8967    
457-9040     363-7541    
459-1588     441-6545    
459-1589     344-0313    
459-1590     423-0253    
459-1591     348-9866    
459-1592     344-0311    
459-6426     348-9867    
459-6427     348-9868    
459-6428     344-0315    
459-6429     357-0837    
462-2640     422-5860    This change is effective for the serial numbers listed in Table 2.
Table 2
Effective Serial Numbers    
S/N:S2A00194-UP    
S/N:S2B00849-UP    
S/N:S2G00425-UP    
S/N:S2H00666-UP    
S/N:E3Y00416-UP    
S/N:SLM00533-UP    
S/N:S2P00266-UP    
S/N:S2R00831-UP    
S/N:JTS00453-UP    
S/N:TTY00104-UP