Caterpillar NSP16N Lift Trucks Operation & Maintenance Manual - PDF DOWNLOAD

Page 209

1.

The operator activates the tiller switch for lifting. The motor starts the pump and the pump draws hydraulic fluid from the tank.

2.

The hydraulic fluid is pressurised.

3.

The pressurised hydraulic fluid flows to the relief valve and through the check valve to the mast cylinder.

5.1.1.2. Slow mast lowering

Figure 5.10. Hydraulic fluid flow during slow lowering 1.

The operator activates the first tiller switch for slow lowering. The pressurised hydraulic fluid flows from the mast cylinders through the strainer.

2.

The fluid flows through the first magnetic valve (2Y1).

3.

The fluid flows through the flow restrictor back to the tank.

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