2012/09/26 Caterpillar

Landfill Compactor:

836H (S/N: BXD1-UP)

Wheel Dozer:

834H (S/N: BTX1-UP)

854K (S/N: H9K1-UP; H8M1-UP)

Wheel Loader:

988H (S/N: BXY1-UP)

992K (S/N: ZMX1-UP; 8801-UP)

993K (S/N: Z9K1-UP; Z4Z1-UP)

994F (S/N: 4421-UP)

994H (S/N: DWC1-UP)

Service Magazine SEPD1501, 26 September 2012, "New Pressure Switch Is Now Used On Certain Large Wheel Loaders {1435, 5068, 5091, 5092}". Disregard the information in the article that is listed above. Refer to the information in the following article.

Description of Change: A new Pressure Switch is now used on hydraulic implement filters on machines that are listed above. The new Pressure Switch has improved sealing.

Adaptable To:

Illustration 1	g03233676
Pictorial view of 376-7257 Pressure Switch (DIFFERENTIAL)

The new 376-7257 Pressure Switch (DIFFERENTIAL) is a direct replacement for the existing 339-4361 Pressure Switch (DIFFERENTIAL).

The new Pressure Switch part number is listed in Table 1.

Table 1

New Pressure Switch
Qty	New Part Number	Description	Former Part Number
1	376-7257	Pressure Switch (DIFFERENTIAL)	339-4361

The new Pressure Switch is adaptable to and is effective in production with the serial numbers that are listed in Table 2.

Table 2

New Pressure Switch
Sales Model	Adaptable Serial Numbers	Effective Serial Numbers
834H	S/N:BTX1-1291	S/N:BTX1292-UP
836H	S/N:BXD1-1224	S/N:BXD1225-UP
854K	S/N:H8M1-303	S/N:H8M304-UP
854K Series 2	S/N:H9K1-310	S/N:H9K311-UP
988H	S/N:BXY1-5365	S/N:BXY5366-UP
992K	S/N:8801-406	S/N:880407-UP
992K Series 2	S/N:ZMX1-431	S/N:ZMX432-UP
993K	S/N:Z9K1-552	S/N:Z9K553-UP
993K Series 2	S/N:Z4Z1-369	S/N:Z4Z370-UP
994F	S/N:4421-340	S/N:442341-UP
994H	S/N:DWC1-352	S/N:DWC353-UP