2011/04/29 Caterpillar

New Software With Increased Fuel System Pressure Parameters Is Available for Certain C32 Marine Engines {1901, 1920}

Usage:

C32 RND

Generator Set: C32 (S/N: RNE1-UP; RNX1-UP)
Marine Engine: C32 (S/N: RND1-UP; RNR1-UP; RNY1-UP; RNZ1-UP)

New fuel lines that are installed onto certain C32 marine engines are less restrictive than the current fuel lines. This causes the fuel pressure to increase.

Flashing the latest software from the Service Information System (SIS) or from the Technical Marketing Information (TMI) will help to ensure that the high fuel pressure alarm will not be activated falsely. Refer to Table 1 for the new fuel pressure warning limits.

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Table 1
New Fuel Pressure Limits
Rated speed limit	880 kPa (128 psi)
Shut down limit	920 kPa (133 psi)

Refer to Table 2 for the appropriate flash files for C32 marine propulsion engines.

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Table 2
C32 Marine Propulsion Engines
Engine Serial Number	Brake Horsepower (BHP) Rating	TMI Test Spec.	Primary Software Part Number	Backup Software Part Number
RND, RNY	660 BHP @ 1800 RPM	0K8325	376-2278	376-2279
RND, RNY	750 BHP @ 1800 RPM	0K8324	376-2280	376-2281
RND, RNY	850 BHP @ 1800 RPM	0K8323	376-2282	376-2283
RND, RNY	950 BHP @ 1600 RPM	0K9046	376-2284	376-2285
RND, RNY	950 BHP @ 1600 RPM	0K8320	376-2286	376-2287
RND, RNY	1000 BHP @ 1800 RPM	0K8322	376-2288	376-2289
RND, RNY	1300 HP @ 2100 RPM	0K8318	376-2292	376-2293
RND, RNY	1300 BHP @ 1800 RPM	0K8317	376-2294	376-2295
RND, RNY	1450 BHP @ 2300 RPM	0K8316	376-2296	376-2297
RND, RNY	1600 BHP @ 2300 RPM	0K8314	376-2298	376-2299
RNR, RNZ	1902 BHP @ 2300 RPM	0K7272	376-2308	376-2309
RNZ	1800 BHP @ 2300 RPM	0K9807	376-2306	376-2307
RNZ	1450 BHP @ 2300 RPM	0K9653	376-2304	376-2305
RNZ	1607 BHP @ 2300 RPM	0K9652	376-2302	376-2303
RNZ	1702 BHP @ 2300 RPM	0K9608	376-2300	376-2301
RNY	1200 BHP @ 2000 RPM	0K4108	376-2290	376-2291

Refer to Table 3 for the appropriate flash files for C32 marine auxiliary engines.

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Table 3
C32 MarineAuxiliary Engines
Engine Serial Number Prefix	BHP Rating	TMI Test Spec.	Primary Software Part Number
RNE, RNX	1466 BHP @ 1800 RPM	0K8351	375-0616
RNE, RNX	1152 BHP @ 1800 RPM	0K8352	375-0617
RNE, RNX	1007 BHP @ 1800 RPM	0K8353	375-0618
RNE, RNX	1288 BHP @ 1500 RPM	0K8354	375-0619
RNE, RNX	1015 BHP @ 1500 RPM	0K8355	375-0620
RNE, RNX	870 BHP @ 1500 RPM	0K8356	375-0621
RNF	1466 HP @ 1800 RPM	0K4077	375-0623
RNF	1152 BHP @ 1800 RPM	0K4098	375-0624
RNF	1288 BHP @ 1500 RPM	0K4103	375-0625
RNF	870 BHP @ 1500 RPM	0K4109	375-0626