Parking Brake System Pressure - Test
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| 所需工具 | ||
|---|---|---|
| 零件号 | 说明 | 数量 |
| 8T-5320 | 液压测试总成 | 1 |
| 1U-5481 | 压力表总成 | 1 |
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热油和热的部件可能会导致人员受伤。 请勿让热的液压油或热的零部件与皮肤接触。 |
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| 注意 |
|---|
在检验、保养、测试、调整及维修发动机时，请小心确保盛接流出的液体。 在打开或拆解任何储有液体的部件之前，要准备好合适的容器收集液体。 有关适合收集和盛接卡特彼勒产品上的液体的工具和供应品，请参阅专门出版物, NENG2500, "卡特彼勒代理商工具目录"。 按照本地法规和条例处置所有液体。 |
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| 图 1 | g01440239 |
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| 图 2 | g00103057 |
停车制动器控制阀 | |
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| 图 3 | g01440230 |
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| 图 4 | g01455447 |
(1) 后制动蓄能器和停车制动器控制阀的压力端口 | |
- 将一条液压软管和一个 0 到 28000 kPa (0 到 4000 psi) 压力表安装到压力端口 (1) 上。
- 起动发动机，并使蓄能器油压增大到接入压力。
注: 当发动机运转时，蓄能器油压将断续增大到约 13790 kPa (2000 psi)。
- 推入停车制动器控制手柄，并关停发动机。
- 反复踩下制动踏板，直到停车制动器控制手柄自动移出到达接合位置。
- 观察压力表上的压力读数。 自动接合停车制动器的正确液压油压应低于6035 ± 515 kPa (875 ± 75 psi)。
- 如果压力表上的读数不正确，则停车制动器控制阀的运行有问题。
观察停车制动器控制阀是否有磨损或损坏的零部件。 如果有零部件磨损或损坏，需更换停车制动器控制阀。
- 卸下测试设备。
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