785G Off-Highway Truck Systems Caterpillar


Brake Valve (Rear Service Brake)

Usage:

785G RTL


Illustration 1g03730748

Table 1
Specification for 421-4178 Valve Group 
Item  Qty  Part  Specification Description 
Max Leakage is 500 mL/min (17 oz/min) at 13800 kPa (2002 psi) & 32 CST with valves SV1 & SV2 energized to 1.9 AMP 
Slack adjuster pressure is 4600 ± 172 kPa (667 ± 25 psi) at 2625 kPa (381 psi) Pedal pressure
293-6585 Solenoid Valve Gp  Final installation torque to 35 ± 3 N·m (26 ± 2 lb ft) 
Final installation torque to 20 ± 3 N·m (15 ± 2 lb ft) 


Illustration 2g03730514

Table 2
Specification for 293-6585 Solenoid Valve Gp 
Item  Qty  Part  Specification Description 
Internal particles must not exceed a major dimension of 0.3 mm (0.012 inch) or a minor dimension of 0.2 mm (0.008 inch) 
312-8629 Coil  Operating voltage is 24 VDC. 
Current 1.9 AMP Max at 100° C (212° F) Ambient
Resistance is 5 ± 0.3 ohms at 25° C (77° F)

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