Excavator maintenance knowledge engine: 1. rational use 2. Timely maintenance installations bearing (W) should be the first in the shaft and the bearing surface coating to provide grade movement is clean engine oil, fuel switching off before the first start after the main bearing repair and the throttle is placed in the low position, used digging machine prices, start the engine is operated observed Luliang digging machine prices, idling longer than 5min. Work out a new machine and after a run-in engine overhaul work in the run-in period prohibits prolonged surge in the load, slashed and high-speed operation under the state of work; working at full capacity for a long time after not immediately stop. You must load, low-speed operation after 15min stop, otherwise, the internal heat not scattered out. Strengthen the oil filter, crankshaft ventilation ventilation cleaning and maintenance work, according to the instructions require timely replacement of filters; to control the temperature of the engine is operating normally prevent radiator "boil", is strictly prohibited without cooling water on the road; Check and adjust in a timely manner the technical condition of the crankshaft and the bearing work. Oil strainer should be cleaned regularly, cleaning is to be careful to check whether there is oil leaking float head. If so, there may float next to drill a small hole, the oil release and seal welding. Otherwise, the float head leaking into the oil strainer will sink to the bottom of the oil pan, the deposition of stolen goods being sucked up and clog filters and oil passages. To 3. Periodic inspection, adjustment without disassembly inspection, namely by means of an instrument or empirically sound auscultation. After bearing damage, the bearing will be issued percussion with the engine running. Main bearing issued a heavy stifling "boring boring", the higher the engine speed, load greater voice louder; the throttle when suddenly sound more prominent, even the engine will produce vibration shaking; when the alloy layer off, bush-burning, or the gap increases to a certain extent, at any speed or load, generally can hear percussion; to determine which road the main bearing ring, generally make judgments based on the location of beeps can also be Suspicious bearing around two adjacent cylinders off the fire, if the sound is lower then the sound of the track bearing. Connecting rod bearing noise than the main bearing light percussion, listening to the outside of the body like the issue of tapping with a hammer firebrick "Da Dada" sound sound short and solid. Leading to several reasons excavator computer board burned! Often we meet many excavators owner hung his head, shaking his head, said excavator computer board and burned, and the instrument but not bright. In fact, encounter this problem, most of them are man-made fault, usually excavator computer boards and instruments are more than a few thousand dollars to yuan, little digging machine prices, burned the inevitable heartache, so usually used excavators , pay attention to the following aspects, can reduce the chance of burn excavator electrical parts and cause damage. First, the battery cable pile head is bad, the contact surface oxidation, the probability of damage PC board CPU and instruments improved significantly, same electrical principle with the family to use, if the fuse box or switch contact is not good is bad, always light bulb dark it is easy to change the bulb burned. Electrical system excavator with household appliances on the same token, it usually must pay attention to the battery pile head contact is secure. Second, the battery cable is reversed, it is a very serious mistake, damage rate greatly, ranging from seizure wires, while burnout computer board instrument power circuit and CPU, the diode string some digging machine lines, power supply positive and negative polarity, then the basic these diodes will be burned, the fuse is certainly not immune. Third, the throttle motor throttle motor failure or abnormal operation, digging machines used are DC motors and stepper motors, motor overheating if a short circuit is extremely easy to put the computer board burned throttle control circuit, it is inevitable failure, usually pay more attention Let excavator throttle motor assembly to keep clean and clean, it will reduce the probability of failure; the driving power when digging machine digging machine motor throttle pull rod is not moving, if we seek to move the throttle lever force, most likely it would excavator computer board burned out.泰安嘉 and Heavy Machinery Co., Ltd. Luliang digging machine prices | used mini excavator price | Kerry and Heavy Industries (quality businessmen) are provided by 泰安嘉 and Heavy Machinery Co., Ltd ..泰安嘉 and Heavy Machinery Co., Ltd. (www.tajhzg.com/) to provide "hydraulic excavators, loaders construction machinery, mining machinery, metallurgical machinery, oil machinery, Ring" and other services, the company has other "Stoker and" brand. Focus on the mining machinery industry in Shandong Tai'an higher visibility. Welcomes inquiries, contact: Xing Jingli.