2004/06/07 Caterpillar


An Improved Service Brake Control Valve Is Available {1435, 4265, 5051}

Usage:

M318 6ES
Excavator:
M312 (S/N: 6TL1-UP)
M315 (S/N: 7ML1-UP)
M318 (S/N: BMD1-UP; 8AL1-UP; 6ES1-UP; 8SS1-UP)
M320 (S/N: 6WL1-UP; 9PS1-UP)
M313C (S/N: BDR1-UP)
M315C (S/N: BDM1-UP)
M316C (S/N: BDX1-UP)
M318C (S/N: BCZ1-UP)
M318C MH (S/N: BEB1-UP)
M322C (S/N: BDK1-UP)
M322C MH (S/N: BDY1-UP)

Description of Change: An improved service brake control valve is now available. The improved control valve has different thread design for the pressure switch, which increases the sealing ability for the switch.

Adaptable To: The new 245-5709 Pressure Switch and 5W-1696 Washer are used in conjunction with the 249-5527 Brake Control Valve Gp. The new parts are a direct replacement for the older 176-7800 Brake Control Valve Gp and 5W-9972 Pressure Switch. The new parts are effective with the following Wheeled Excavators: M313C (S/N: BDR568-UP), M315C (S/N: BDM681-UP), M316C (S/N: BDX746-UP), M318C (S/N: BCZ840-UP), M318C MH (S/N: BEB246-UP), M322C (S/N: BDK373-UP) and M322C MH (S/N: BDY347-UP).

Note: When you install the new pressure switch, torque the switch to 32 ± 3 N·m (283 ± 27 lb in).The new valve is being installed on the machines that are being assembled in the factories. If the 5W-9972 Pressure Switch fails in the field, install a new 5W-9972 Pressure Switch.

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