Hoist Lower Valve - Adjust
升降阀指令可以通过 ET 进行微调。 该调整将改善车斗降下性能和止住性能。 升降阀调整将补偿阀之间的差异。 调整范围是 −5° 到 +5° 之间,缺省为零。 正的调整因子会增加升降阀指令。 这会导致车斗降下时冲击较大。 负的调整因子会减少升降阀指令。 这会导致车斗降下时冲击较小。
某些早期 ECM 上升降阀调整可能不可用。
注: 如果升降阀调整设定过高,那么当举升系统位于浮动模式时,可能有过多油分流道举升系统。 这可能导致制动油升温速度加快。 这也会降低缓速器性能。
- 调整步骤
注: 在进行此调整步骤之前,将举升操纵杆置于保持位置。 将卡车置于静止位置。
- 在举升出口放置一个 3447 kPa (500 psi) 压力表。
- 让车斗处于下降位置,将举升操纵杆移向保持位置。
- 进入配置参数屏幕。 使用 ET 中的维修下拉菜单。
- 将升降阀调整设定更改到理想设定 −5° 到 +5° 之间。
- 在发动机运行的同时,将举升操纵杆移动到浮动位置。
- 使发动机运转到低怠速。 确认举升出口处压力低于 1724 kPa (250 psi)。
注: 如果压力高于 1724 kPa (250 psi),则调整设定过高。 这可能导致过多油分流道举升阀。 如果操作员在举升操纵杆位于浮动位置时驾驶,制动器油可能过热。 降低设定并重复本步骤,直到压力低于 1724 kPa (250 psi)。
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