The maintenance requirement of Komatsu excavator is highly professional. The following is a brief description of the maintenance of Komatsu excavator.
The Komatsu excavator model pays attention to the list:
Komatsu PC200-8, Komatsu PC60-7, Komatsu PC360-7, Komatsu PC450-8, Komatsu WA470, Komatsu 930E-4SE, Komatsu WA380-6, Komatsu PC56-7, Komatsu 930E-4, Komatsu PC70-8 and so on.
The performance advantage of the Komatsu excavator:
Compared with other excavators, the PC56-7 excavator is reliable and reliable in oil saving and durability.
PC60-7 is fast, sensitive and fuel consumption is about 6~7 litres per hour.
PC200-8 cab and performance performance is good, strong walking, cab computer board beautiful, but the vehicle maintenance cost is high, fuel consumption is high.
PC270-7 large volume of work and lower fuel consumption, standard Kang Chus GPS management system.
PC360-7 high wear resistant bucket, powerful digging and fast walking.
PC220-7 has a better heat dissipation effect.
Mechanical matching, hydraulic system super cattle, flexible, durable, durable, durable, value preservation, low cost, low cost, oil consumption in general, power up. Small models are larger, such as PC60 larger than similar 名媛直播, the more stable 70., the more stable PC200, PC60, PC360 is the best (personal feeling), the price market row second, third, walk. The part is very common.
Poor KOMATSU, more than 50 years old Japanese brands, absorbing a large number of European and American technology, average level, gentle action, no obvious shortcomings, tolerance.
Komatsu entered the Chinese market earlier, more domestic parts. The engine is the homemade Cummins Komatsu (oil consumption is relatively large), the walking motor is the Shanghai Emperor (usually 4000 hours is easy to go out of problems), the design of the machine electrical components is backward. The advantage is that the hydraulic pump works smoothly and the hydraulic system is better.
Common failures in the maintenance of the Komatsu excavator:
The Komatsu excavator automatic extinguishing, the small pine excavator large pump abnormal sound, the small pine excavator action suffocating car, the small pine excavator drop speed, the Komatsu excavator cold car suffocating, the small pine excavator powerless, the small pine excavator air conditioning, the small pine excavator smoke, the small pine excavator lift the big arm slow, the small pine excavator walking the big arm, the small pine excavator walking suffocating, small pine excavator walking suffocating, small, small pine excavator, small The hydraulic oil temperature of the loose excavator is high.
Maintenance of air conditioning system for Komatsu excavator (PC220-6)
Reason:
The 1 compressor is deficient in fluorine or leakage of fluorine.
2 the electromagnetic clutch of the air conditioner compressor of the Komatsu excavator does not draw in, and the compressor does not work.
3 the condenser fan does not turn, does not heat.
The 4 compressor wears the cylinder or is locked.
Fault check:
1 first, open the A/C switch of the air conditioner panel, listen to the clutches of the electromagnetic clutch of the air conditioning compressor, and the electromagnetic compressor can work.
2 check the condenser and find that the condenser fan does not rotate. Check the condenser fan connection and find that the sealing link is not connected.
3 reasons; the condenser fan does not turn, the line is broken.
4 maintenance method; connect main wire CN-M35 plug and fan motor CN-M35 plug.
Komatsu excavator maintenance - excavator low arm weakness (Komatsu 200-7 as an example)
Reason:
1 pilot control valve has problems, causing the pump swashplate not to be opened. When manipulating the small arm, the flow of the pump decreases and the recoil slowly decreases.
2 the hydraulic seal is broken, and the sealing effect is not strong.
3 small arm cylinder leakage
The following methods can be found:
(1) raise the lower arm and slow down the arm when it does not operate.
(2) the upper arm can not hear the relief valve opening (the internal leakage causes insufficient pressure).
4 hydraulic system of excavator has problems
