Small excavator/small hook machine recommended machine system inspection matters

[BONOVO]

What are the inspection precautions for small excavator engines? Let's take a look together.
Check the diesel engine speed/timing, check the fuel injection drive pressure, check the fuel system, and other inspection "precautions".
(1) Check the diesel engine speed/timing
1 Shake the diesel engine on the diesel engine and check the diesel engine speed. If ET or /MIM is displayed, check the speed/timing sensor. When the drum rotates, the small excavator and diesel engine speed signals may be abnormal. Once the ECM can calculate the diesel engine speed based on the signal, the information will be replaced by the diesel engine speed.
2 Check the diesel engine speed/timing sensor calibration.
3 Confirm that the timing reference gear is installed correctly. If the gear is reversed, the diesel engine will not start. Check the correct position between the crankshaft and camshaft drive gears. If necessary, correctly position and/or replace the drive gear.
(2) Check the fuel injection drive pressure
1 Check the oil level.
2 If the diesel engine is to be repaired in the near future, there may be air in the fuel injection drive pressure circuit. Allow the diesel engine to warm up completely and load the diesel engine to exhaust air from the fuel injection pressure circuit.
3 Compare the actual actuation pressure on the ET with the required actuation pressure. If the difference between the two readings during the fault period does not exceed 2MPa, it means that the problem is not in the fuel injection pressure circuit.
Small excavator, small hook machine
4 Check the seal of the fuel injection pressure control valve. If the seal fails, replace the seal and repeat process 3.
5 Check whether the wiring harness connected to the fuel injection pressure control valve is open and/or short-circuited.
6 Measure the coil resistance of the fuel injection pressure control valve. For small excavator types, it should be 4 to 16Ω; otherwise, replace the fuel injection actuation pressure control valve.
7 Use ET to perform a fuel injection actuation pressure test. If the fuel injection actuation pressure is low, the high-pressure oil circuit may be leaking.
A. Remove the plugs of the fuel pressure control valve and the injector connector.
b. Use ET or the diesel parking switch to intermittently fill the oil.
Remove the valve arrangement cover.
Check the injector joint drainage and cross cylinder seal leakage and crankshaft diesel.
Eliminate the leakage and repeat process D.
F. If the fuel injection drive pressure is still low during the recommended process, the fuel injection drive pressure control valve may be faulty, replace the fuel injection drive pressure control valve and repeat process 3
What common sense should you pay attention to when working on a small excavator?
1. Avoid arranging a small excavator in the upper and lower excavation sections at the same time; when the trencher moves in the working plane, the ground should be flat, and obstacles in the channel should be removed.
2. Do not dig too deep in front of the machine. Otherwise, the bottom will be hollowed out, which will cause the ground to collapse and cause an accident.
3. Avoid using the trencher boom to drag objects horizontally; hydraulic trenchers cannot dig by impact methods.
Avoid crushing solid objects with the bucket; if it encounters a large stone or a solid object, it should be removed before continuing the work.
5. Do not dig the working surface under the suspension part, otherwise there will be a risk of falling rocks, and even cause the suspension part to collapse, causing an accident.
6. Avoid using the bucket cylinder to fully expand the trencher.
The recommended inspection precautions for small excavators and the common sense that should be paid attention to during operation are now here. If you have any questions, please contact us.

Mini crawler excavator，Mini crawler excavator attachments，Excavator attachments，Crawler excavator，Mini excavator purchase

Choose BONOVO for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!

for more info just visit our website at www.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com