Brake Accumulator
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| 图 1 | g01438868 |
制动蓄能器位置 | |
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| 图 2 | g00428660 |
制动蓄能器 (1) 氮气充注阀 (2) 蓄能器 (3) 腔室 (4) 活塞 (5) 压力油腔室 (6) 行车制动器控制阀出油口 | |
活塞 (4) 在每个蓄能器 (2) 的孔内上、下移动。 腔室 (3) 的充注容量约为 5516 kPa (800 psi) 干燥氮气。 每个蓄能器通过充注阀 (1) 充注氮气。
机油从制动器泵进入机油腔室 (5) 。 机油通过出口 (6) 到达压力油腔室。 机油向上推动活塞 (4) 。 机油压力压缩氮气。
蓄能器压力达到近似 13790 ± 345 kPa (2000 ± 50 psi) 时，机油供应停止。 踩下任一制动踏板时，机油从压力油腔室 (5) 流出压力口 (6) ，流向行车制动器控制阀。 这样可施加行车制动。
Caterpillar Information System:
992K Wheel Loader Electrohydraulic System Main Hydraulic System
993K Wheel Loader Braking System Pressure Sensor (Axle Brake Oil)
992K Wheel Loader Electrohydraulic System Relief Valve (Implement Pilot)
992K Wheel Loader Electrohydraulic System Tilt Cylinder
992K Wheel Loader and 854K Wheel Dozer Power Train Final Drive, Brake and Wheel
Bench Test Procedure for a 990, 990 Series II, 990H Wheel Loader and a 844, 844H Wheel Dozer Torque Converter{3101} Bench Test Procedure for a 990, 990 Series II, 990H Wheel Loader and a 844, 844H Wheel Dozer Torque Converter{3101}
993K Wheel Loader Power Train Electronic Control Module
993K Wheel Loader Power Train General Information
2008/09/29 An Improved Three-Piece Oil Pan Gasket is Now Used {1302, 7555}
2008/05/12 Wear that is Acceptable in Specific Gear Pumps {4007, 5073, 5073, 7516}
854K Wheel Dozer and 992K Wheel Loader Power Train Electronic Control Module (ECM) - Replace
992K Wheel Loader and 854K Wheel Dozer Power Train Transmission, Input Transfer Gears and Output Transfer Gears - Install
992K Wheel Loader and 854K Wheel Dozer Power Train Transmission from Input Transfer Gears and Output Transfer Gears - Separate
854K Wheel Dozer and 992K Wheel Loader Oil Cooler Core (Transmission) - Install
854K Wheel Dozer and 992K Wheel Loader Oil Cooler Core (Engine) - Remove
854K Wheel Dozer and 992K Wheel Loader Oil Cooler Core (Engine) - Install
992K Wheel Loader and 854K Wheel Dozer Power Train Transmission to Input Transfer Gears and Output Transfer Gears - Connect
854K Wheel Dozer and 992K Wheel Loader Battery - Remove and Install
993K Wheel Loader Power Train Input Transfer Gears
994F Wheel Loader Power Train Differential and Bevel Gear (Rear) - Install
994F Wheel Loader Power Train Differential and Bevel Gear (Front) - Install
844K and 854K Wheel Dozers and 990K, 992K, 993K, 994F and 994H Wheel Loaders Powered Access Stairway Connector Locations
992K Wheel Loader and 854K Wheel Dozer Power Train Output Transfer Gears - Disassemble
992K Wheel Loader and 854K Wheel Dozer Braking System Piston Pump (Brake)