2008/02/04 Caterpillar

Load Haul Dump:

R1300G (S/N: LJB1-UP)

R1300GSeries II (S/N: RSL1-UP)

R1600G (S/N: 9PP1-UP)

R1600G (S/N: 9YZ1-UP)

R1700G (S/N: SBR1-UP; 8XZ1-UP)

Underground Articulated Truck:

AD30 (S/N: CXR1-UP; DXR1-UP)

AD45B (S/N: CXM1-UP)

AD55 (S/N: ANW1-UP; DNW1-UP)

AD55B (S/N: JNW1-UP)

Description of Change: A new parking brake pressure switch is now used. The new parking brake pressure switch provides improved service life.

Adaptable To: The 309-2093 Pressure Switch is a direct replacement for the 244-5090 Pressure Switch. Refer to Table 1 and Table 2.

Illustration 1	g01444065
Typical example of the parking brake pressure switch (1) 309-2093 Pressure Switch