HANDHOLD AS 8W4587 - Caterpillar

2G8227 Breaker Relief Valve (air in tank).Air pressure to open valve ... 70 14 kPa (10 2 psi) When oil in tank gets cool, air pressure decreases. Valve opens when pressure in the tank is approximately 2 kPa (.25 psi) less than atmospheric pressure.7B3039 Spring for drain valve in hydraulic tank:Length under test force ... 26.2 mm (1.03 in.)Test force ... 14.4 to 16.8 N (3.22 to 3.78 lb.)Free length after test ... 36.6 mm (1.44 in.)Outside diameter ... 19.84 mm (.781 in.)3G8152 Filter Group (part of tank)3G7232 Bypass Group (part of filter group)(1) 7J2983 Spring: Length under test force ... 64.3 mm (2.53 in.)Test force ... 265 22 N (60.0 4.8 lb.)Free length after test ... 219.7 mm (8.65 in.)Outside diameter ... 152.4 mm (6.00 in.)(2) 3G3273 Spring (bypass valve): Length under test force ... 55.6 mm (2.19 in.)Test force ... 985 79 N (221.0 17.7 lb.)Free length after test ... 143.8 mm (5.66 in.)Outside diameter ... 82.6 mm (3.25 in.)