实际上低温环境对强夯机的发动机和液压系统带来了考验，低温直接导致液压油及机油粘度增加，从而导致流动性变差、阻力增大、工作效率低等现象。所以说为提升强夯机工作效率及使用寿命，强夯机进行冷启动预热是非常必要的。

In fact, the low temperature environment has brought a test to the engine and hydraulic system of the dynamic compaction machine. Low temperature directly leads to the increase of the viscosity of hydraulic oil and engine oil, resulting in poor liquidity, increased resistance and low work efficiency. Therefore, in order to improve the working efficiency and service life of the dynamic compaction machine, it is very necessary for the dynamic compaction machine to conduct cold start preheating.

强夯机冬季施工前必须按步骤预热，待液压油温度达到20℃以上，发动机冷却水温达到60℃以上才能开始施工。

The dynamic compaction machine must be preheated step by step before winter construction. The construction can be started only when the hydraulic oil temperature reaches above 20 ℃ and the engine cooling water temperature reaches above 60 ℃.

用车前检查：检查发动机冷却液液位、机油液位及液压油液位，保证液量充足，检查油水分离器积水情况并及时放水。

Pre use inspection: check the engine coolant level, engine oil level and hydraulic oil level to ensure that the liquid volume is sufficient. Check the water accumulation in the oil-water separator and drain the water in time.

预热前准备:夯锤从脱钩器上脱下（整机无负载），插入钥匙上电不启动发动机。检查驾驶室内显示屏信息无故障报警，确保车辆周边无行人和障碍物，并鸣笛示意。

Preparation before preheating: remove the ram from the coupler (the whole machine has no load), insert the key and power on without starting the engine. Check whether there is any fault alarm on the display screen in the cab, ensure that there are no pedestrians and obstacles around the vehicle, and sound the horn.

扭动点火开关启动发动机，发动机无负荷怠速（800转左右）运转约3分钟（不进行操作动作），对发动机进行预热，让发动机各零部件充分润滑。

Turn the ignition switch to start the engine, and the engine will idle at no load (about 800 RPM) for about 3 minutes (without operation). Preheat the engine and fully lubricate all engine parts.

踩油门踏板(或者调节手油门)，逐步提升发动机转速1500转左右，无负荷状态（不进行操作动作）运行约5分钟。

Step on the accelerator pedal (or adjust the hand throttle), gradually increase the engine speed to about 1500 rpm, and run for about 5 minutes under no-load state (no operation action).

保持发动机转速1500转左右，向上打开先导开关，操作主卷扬手柄，进行空钩提升、下放动作，使液压油进行快速预热。

Keep the engine speed at about 1500 rpm, open the pilot switch upward, operate the handle of the main winch, lift and lower the empty hook, and quickly preheat the hydraulic oil.

观察显示屏信息，液压油温达到20℃，发动机水温达到60℃即可停止预热，进行正常施工。

Observe the information on the display screen. When the hydraulic oil temperature reaches 20 ℃ and the engine water temperature reaches 60 ℃, the preheating can be stopped and normal construction can be carried out.

强夯机出租人员提醒各位车主要注意：对于不同环境温度及使用条件，需使用特定型号的液压油及发动机燃油。

The lessor of the dynamic compaction machine reminds you that for different ambient temperatures and service conditions, you need to use specific types of hydraulic oil and engine fuel.

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