2015/02/27 Caterpillar

Electric Power Generation:

C4.4 GEN SET (S/N: NCD1-UP; XYC1-UP; D4D1-UP; GLD1-UP; N4D1-UP; XYD1-UP; GLE1-UP; NCE1-UP; N4E1-UP; N4R1-UP; N4X1-UP)

C3.3 GEN SET (S/N: X3B1-UP)

C4.4 GEN SET (S/N: D4B1-UP)

Engine News SEBD9818, 11 October 2012, "A New Design of Jacket Water Heater Is Now Used on Certain C4.4 and C3.3 Generator Sets". Disregard the information in the article that is listed above. Refer to the information in the following article.

Description of Change: A New Design of Jacket Water Heater (JWH) is now used on certain C4.4 and C3.3 Generator Sets. The new design of JWH system has the hot and cold hose routings swapped. The new design of JWH prevents the hot coolant routed to the engine thermostat. A new bracket also designed to mount the JWH in the new position compatible with the hose routing.

Adaptable To:

Illustration 1	g03287456
Old design of Jacket Water Heater

Illustration 2	g03806043
New design of Jacket Water Heater

The new design of Jacket Water Heater is adaptable to and is effective in production with the serial numbers that are listed in Table 1.

Table 1

New Design of Jacket Water Heater
Sales Model	Adaptable Serial Numbers	Effective Serial Numbers
C3.3	S/N:X3B1-210	S/N:X3B211-UP
C4.4	S/N:D4B1-2832	S/N:D4B2833-UP
	S/N:D4D1-2745	S/N:D4D2746-UP
	S/N:GLD1-1302	S/N:GLD1303-UP
	S/N:GLE1-1303	S/N:GLE1304-UP
	S/N:N4D1-1199	S/N:N4D1200-UP
	S/N:N4E1-1199	S/N:N4E1200-UP
	S/N:N4R1-402	S/N:N4R403-UP
	S/N:N4X1-479	S/N:N4X480-UP
	S/N:NCD1-1179	S/N:NCD1180-UP
	S/N:NCE1-841	S/N:NCE842-UP
	S/N:XYC1-680	S/N:XYC681-UP
	S/N:XYD1-645	S/N:XYD646-UP