325C Excavator Hydraulic System Caterpillar


Pump Control (Negative Flow) - Adjust

Usage:

325C AMH



图 1g00668985

泵调节器(右泵)

(1) 螺栓

(2) 盖

(3) 密封圈

(4) 弹簧座

(5) 弹簧

(6) 垫片

执行下列步骤来调整右泵。

  1. 拆下两个螺栓 (1) 。

  1. 拆下罩盖 (2) 和密封件 (3) 。

  1. 拆下弹簧座 (4) 和弹簧 (5) 。

  1. 添加垫片 (6) 可增大反向流量。 拆下垫片 (6) 可减小反向流量。 有关可用的垫片和垫片厚度,请参阅表1 。

    注: 在反向流量控制压力为 2550 kPa (370 psi) 时,垫片厚度每改变 0.1 mm (0.0039 in) ,反向流速将改变 4 L/min (1.1 US gpm)。

    表 1
    可用垫片    
    零件号     垫片厚度    
    099-3669 垫片    
    1.00 mm (0.0394 in)    
    099-6109 垫片    
    1.05 mm (0.0413 in)    
    099-6110 垫片    
    1.10 mm (0.0433 in)    
    099-6111 垫片    
    1.15 mm (0.0453 in)    
    099-6112 垫片    
    1.20 mm (0.0472 in)    
    099-6113 垫片    
    1.25 mm (0.0492 in)    
    099-6115 垫片    
    1.30 mm (0.0512 in)    
    099-6117 垫片    
    1.35 mm (0.0531 in)    
    099-6118 垫片    
    1.40 mm (0.0551 in)    
    099-6119 垫片    
    1.45 mm (0.0571 in)    
    099-6120 垫片    
    1.50 mm (0.0591 in)    
    099-6121 垫片    
    1.55 mm (0.0610 in)    
    099-6122 垫片    
    1.60 mm (0.0630 in)    
    099-6123 垫片    
    1.65 mm (0.0650 in)    
    099-6124 垫片    
    1.70 mm (0.0669 in)    
    099-6125 垫片    
    1.75 mm (0.0689 in)    
    099-6126 垫片    
    1.80 mm (0.0709 in)    
    099-6127 垫片    
    1.85 mm (0.0728 in)    
    099-6128 垫片    
    1.90 mm (0.0748 in)    
    099-3670 垫片    
    1.95 mm (0.0768 in)    

  1. 在泵调节器中安装垫片 (6) 。

  1. 安装弹簧 (5) 。 安装弹簧座 (4) 。

  1. 安装罩盖 (2) 和密封件 (3) 。

    注: 检查密封件 (3) 。 如果密封件损坏,用新密封件更换。

  1. 安装螺栓 (1) 。 用 55 ± 10 N·m (40 ± 7 lb ft) 的扭矩拧紧螺栓 (1) 。

以与右泵同样的方式调整左泵。

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