Failure cause:
This kind of advanced structure, reasonable and compact, but some users have fault cylinder in use. The cylinder is in the internal wall of the cylinder sleeve, along the direction of movement of the piston, appear in shades of grooves, the cylinder sealing effect, analysis of fault cylinder have the following reasons:
1, the use of bad time.
2, piston and cylinder clearance is too small.
3, Baotou North Benz parts piston ring gap is too small.
4, in the low temperature, after the start of the detonation temperature.
5, the process of overheating.
6, Baotou Benz accessories “three” no good job.
7, cooling piston nozzle failure, piston cooling is not enough, overheating expansion, injury cylinder sleeve.
8, long idle operation.
9, long nozzle atomization bad, a large number of diesel thin fog beads diluted oil film on the cylinder wall.
Fault phenomenon:
The cylinder can be divided into early, middle and late 3 stages, the early sound of the engine cylinder is in the throttle or intermittent acceleration, add oil from the crankcase can hear a “bang bang” sound. This is the sound of cylinder compression occurs, gas leakage from the crankcase, sometimes from the oil outlet out smoke, it is early on.
When the leak sound serious, similar and knocking sound, and open the oil cover, there are a lot of gases, exhaust smoke. When using the method to check off the oil, knocking sound weakened, but this is the middle cylinder puzzled disappeared.
Advanced cylinder can obviously hear knocking sound power and gas channeling, reduced throttle noise increase, sound clutter, engine shaking. Check the oil, the engine may suddenly turn off phenomenon. Late on serious can make or break the piston piston stuck in the cylinder, and even allows the piston rod broken and broken cylinder.
Fault maintenance:
Baotou North Benz engine cylinder parts failure, should take the piston for maintenance, and analysis the reason of cylinder.
If it is early in cylinder, the piston is withdrawn after the cleaning piston, piston ring, cylinder liner, re assembled and dynamic test??. After a period of running, cylinder seal recovery, but the power cylinder as before.
The middle cylinder appears adhesion phenomenon, if not deep drawing marks on the surface of cylinder liner, can be replaced with the polished stone piston and piston ring type, you can use the same weight. After the loading can not hear the sound of knocking on the cylinder, you can continue to use.
Advanced cylinder, piston erosion, should remove the engine overhaul, cylinder liner, piston, piston ring must be replaced and assembled.
Fault prevention:
In order to avoid the engine cylinder fault, should pay attention to the following points:
1, strictly control the cylinder sleeve and piston assembly clearance, piston ring opening gap, so that it is within the standard range.
2, the new piston to check the cylinder, so that the cylindricity control in 0.18 ~ 0.28mm.
3, keep the installation maintenance parts cleaning, to avoid impurities into the cylinder.
4, walking in the period, the strict implementation of the system of walking together, reducing load deceleration; go after a comprehensive inspection, maintenance.
5, the use of oil in accordance with the provisions, and regular replacement.
6, clean, replace the air filter core and oil filter, check the engine intake pipe, to prevent rupture