CONTROL GP-AIR STARTING 8N8491 - Caterpillar

(1) Crossover relief valve: Pressure setting ... 3450 170 kPa (500 25 psi)At a flow of ... 3.8 liter/min (1.05 U.S. gpm)At a temperature of ... 49 to 66°C (120 to 150°F)(2) 2S2596 Spring for makeup check valves: Length under test force ... 7.87 mm (.31 in)Test force ... 4.23 0.35 N (.950 .076 lb)Free length after test ... 33.3 mm (1.31 in)Outside diameter ... 8.43 mm (.332 in)(3) 1U4060 Spring for pilot operated check valves: Length under test force ... 9.52 mm (.374 in)Test force ... 5.2 0.04 N (1.13 .009 lbs.)Free length after test ... 12.45 mm (.490 in)Outside diameter ... 8.89 mm (.350 in)(4) Torque to install pilot-operated check valves ... 82 7 N m (61 5 lb ft).