Excavator heat engine moves slowly

excavator spare parts
Oct 10, 2018
2 min read

The Komatsu excavator spare parts dry activities were particularly slow, especially when the hot car was closed, and the two arms were stretched, and it was impossible to find a job.

The pump is gray square, there are three adjustment flow screws on the regulator, the above is the power adjustment, the middle is the constant pressure adjustment, the bottom is the no-load pressure adjustment "LS pressure".

The regulator spool is prone to wear, causing adjustment failure and increased leakage.

The excavator spare parts heat engine action slow fault is introduced to this, the following said that the excavator boom can not lift, the replacement of the main relief valve action should be slightly better, the main pressure of the two pumps when the excavator is in the cold car is 260 kg The hot car is 200. What causes the malfunction?

1The hydraulic pump is damaged or the hydraulic pump is leaking

2 servo injection

3 pilot pressure is not normal

4 distribution valve failure

The heat engine of the excavator is slow and weak, the movement of the whole car is slow, the movement of the excavator is slow. The excavator is not working hard. It has rich experience in excavator maintenance and can quickly solve the problem of excavator failure.

Excavator detailed parameters

Standard bucket capacity: 0.36m3

Vehicle weight: 8500KG

Engine power: 56.5KW

Engine brand: YANMAR

Engine model: 4TNV98T-SYU

Engine rated speed: 2200r/min

Maximum engine torque: 296N.m

Engine type: four cylinders, direct injection, naturally aspirated, water cooled

Engine displacement: 3.319L

Maximum excavation height: 6380mm

Maximum unloading height: 4390mm