Avoid Incorrect Assembly of Parts During Maintenance of Diesel Genset

Nov. 21, 2022

After the diesel generator set has been used for a certain period of time, it is inevitable that there will be failures. Some failures need to be disassembled. During the maintenance of the diesel generator set, there are many things to pay attention to, one of which must be paid attention to. That is, the wrong assembly of parts should be avoided during maintenance. We know that the diesel generator set is a mechanical equipment with high accuracy, which is composed of thousands of parts, most of them have certain requirements for installation position and direction. If you do not pay attention, it is easy to cause wrong installation, which not only easily leads to damage to parts, but also may cause damage to power generator, which makes it difficult or impossible to start the diesel generator set. In order to avoid such mistakes, Dingbo Power has sorted out the following collection of parts that are easy to be reversed or wrongly installed. I hope it will be helpful to you.

 

Cylinder gasket: when assembling the cylinder gasket, the crimped side shall face the cylinder head; If it is installed reversely, it will lead to early gas leakage and cylinder gasket burning of the diesel generator set, which will affect the service life of the unit.


 500kw containerized generator


The horseshoe shaped groove at the top of the piston or the peach shaped tip at the top shall face upward; If the plate is installed, it is not conducive to the mixing of fuel and air. The unburned fuel can not produce secondary eddy motion and combustion is incomplete, resulting in the diesel generator set can not be started or it does not work normally after starting.

 

Assembly of connecting rod and piston: the oil hole at the small end of the connecting rod and the horseshoe shaped groove at the top of the piston or the peach shaped tip at the top shall face upward; Otherwise, it will cause dry friction between the connecting rod small end bushing and the piston pin.

 

Upper and lower pads of connecting rod bush: if the bearing bush is newly replaced, it is not divided into upper and lower pads; If the used bearing bush is used, it should be reassembled according to the original position, and it should not be shifted up and down, otherwise the matching relationship between the journal and the bearing bush will be affected.

 

Combination of connecting rod cap and connecting rod: the big end of the connecting rod and the back of the connecting rod cap are marked with assembly marks. When assembling, the marked parts should be on the same side. Otherwise, the original machining accuracy of the connecting rod big end aperture cannot be guaranteed, and the correct fit between the bearing and the shaft will be damaged.

 

Fuel injector pressure plate: one side of the pressure plate is flat, and the other side is arc. During installation, make the arc face towards the injector body to ensure that the injector is centered and not deflected when pressed, otherwise it is easy to make the mounting hole leak outward.

 

Oil seal: All oil seals, such as crankshaft oil seal and starting shaft oil seal, shall make the side with self tightening spring face into the engine block. If it is installed reversely, the crankcase is not sealed tightly, causing oil leakage.

 

Plunger sleeve in the fuel injection pump: the crescent shaped hole in the plunger and the positioning screw hole in the plunger sleeve on the pump housing shall be on the same side to ensure that the end of the positioning screw is screwed into the crescent shaped groove, so that the plunger cannot rotate. If it is installed reversely (i.e., it is installed by turning 180 degrees), it is possible to block the oil return hole with the set screw, and the runaway fault of the diesel generator set may be caused by out of control oil supply.

 

Two small washers on the fuel injection pump: the washer on the positioning screw of the plunger sleeve is a copper washer, while the washer on the guide screw of the tappet is a spring washer, which cannot be interchanged or installed incorrectly; Otherwise, the diesel in the injection pump chamber will leak into the oil pan or out.

 

Breather on gear chamber cover: When installing the middle reed assembly of the breather, the reed shall be outward to ensure that the breather only exhales but not inhales.

 

In the maintenance of the diesel generator set, in addition to not installing the wrong or reverse parts, it is important to clean the parts and pay attention to whether the parts are replaced in pairs. In order to ensure the good performance of the unit and extend the service life, please follow the principle of careful and patient work when doing any operation, and try to do a good job in any small matter.

Follow Us

WeChat

WeChat

Contact Us

Mob.: +86 134 8102 4441

Tel.: +86 771 5805 269

Fax: +86 771 5805 259

E-mail: dingbo@dieselgeneratortech.com

Skype: +86 134 8102 4441

Add.: No.2, Gaohua Road, Zhengxin Science and Technology Park, Nanning, Guangxi, China.

Get in Touch

Enter your email and receive the latest news from us.

Copyright © Guangxi Dingbo Power Equipment Manufacturing Co., Ltd. All Rights Reserved | Sitemap Update cookies preferences | privacy-policy
Contact Us