农业机械上有许多小孔,容易被机手忽视而造成堵塞,因而导致故障,有的甚至造成严重后果。制动总泵(农用运输车)的加油孔盖上有一通气孔,是用来排放空气和起平衡作用的。如果堵塞,制动油路中空气排不尽,进入制动分泵的油量减少,就会影响制动效果,甚至可能造成严重事故。电瓶的加液孔盖上有一排气孔,容易被尘土、污物堵塞,要经常检查,保 There are many small holes in agricultural machinery, which are easily blocked by the negligence of the driver, resulting in failure and some even causing serious consequences. The brake master cylinder (agricultural truck) has a vent hole in the filler cap to allow air to be discharged and balanced. If it is clogged, the air in the brake oil line is exhausted and the amount of oil entering the brake cylinder will decrease, which will affect the braking effect and may even cause serious accidents. Battery hole on the lid of a vent hole, easily clogged with dirt, dirt, to always check, Paul