2000/07/01 Caterpillar

Marine Engines:

3116 (S/N: 4KG; 1SK)

3126 (S/N: 8NM; 6SR)

Description of Change: High Efficiency Orifice (HEO) fuel injectors are now used for service repairs on these marine engines. The HEO fuel injectors will produce lower amounts of exhaust soot than the fuel injectors that have been used on these marine engines in production and service repairs.

Adaptable To: The HEO fuel injectors should be used for service repairs on the marine engines that are listed above. Remanufactured fuel injectors are also available for the HEO fuel injectors.

Refer to the following table in order to determine the correct part numbers of the fuel injectors for your marine engine.

Table 1

Engine	Rating	Part number of the HEO Fuel Injector	Part number of the Former Fuel Injector	Part number of the Remanufactured HEO Fuel Injector
3116	224 kW (300 hp)	-	127-8228 (1)	0R-8465 (1)
3116	242 kW (325 hp)	162-0212	127-8230 (2)	0R-8463
3116	261 kW (350 hp)	162-0212	127-8230 (2)	0R-8463
3126	287 kW (385 hp)	162-0212	127-8230 (2)	0R-8463
3126	313 kW (420 hp)	162-0218	135-2581 (2)	0R-8633

( 1 )	This part is still available. This part should normally be used to service the 224 kW (300 hp) 3116 Marine Engines. The 162-0212 Fuel Injector or 0R-8463 Fuel Injector (Remanufactured) may be used if reduced levels of smoke are desired.
( 2 )	This part has been cancelled.

The injectors do not need to be replaced in sets. If only one fuel injector must be replaced, only replace that one fuel injector. The former fuel injectors may be used with the new fuel injectors in the same marine engine.