Denison Denison Oil Pump - Mechanical Maintenance: The maintenance of Denison Denison oil pump should pay attention to the following aspects:
1. Water will corrode the oil pump, so it is forbidden to use the oil pump to vacuum the substances containing water.
2. For substances containing a large amount of solvent, please remove most of the solvent in the oven first, and then use the oil pump to evacuate.
3. Use the vacuum pump in the correct order to prevent sucking back.
4. After using the vacuum oven, be sure to do a good job of cleaning and wipe the glass windows of the vacuum oven.
5. Wipe off the surface anti-rust oil.
6. Remove the anti-rust oil in the inner cavity of the governor and the inner cavity of the fuel injection pump, and add the specified grade of lubricating oil.
7. The anti-rust oil in the fuel pipeline should also be removed before use, and the fuel should be connected to the fuel injection pump pipe
Rotate the camshaft of the fuel injection pump continuously until the fuel outlet valve is tightly seated and clean fuel is ejected.
8. Reasonable selection of fuel.
9. Must use fuel of appropriate grade. Generally, No. 0 diesel oil is used in summer, and -10 No. light diesel oil is used in winter.
10. The fuel used must be clean and free from any impurities and moisture.
Denison Denison Oil Pump Maintenance Denison Denison Oil Pump-Mechanical Structure
The main parts of Denison oil pump are: camshaft, roller body, plunger and plunger sleeve, plunger spring, rotating sleeve and ring gear, oil outlet valve and valve seat and compression pipe connection, etc. The plunger sleeve and the plunger are a pair of main precision couplers in the fuel injection pump. They have been carefully processed and matched with each other, and their diameter clearance is only 0.001-0.003mm.
Parts can only be replaced in pairs, not individually.
There are two holes on the plunger sleeve, so that the inner cavity of the plunger sleeve communicates with the oil passage, and there is a longitudinal groove at the right oil hole, in which a screw is inserted, so that the plunger sleeve is fixed in the pump body and cannot be rotated. The upper part of the plunger is provided with an annular groove, which communicates with the upper end face of the plunger through a longitudinal groove. The helical bevel starts from the longitudinal groove to adjust the oil supply. The lower part of the plunger has two shoulders and flanges. The plunger shoulder is inserted into the cutout of the rotating sleeve.
The turning sleeve is then freely mounted on the plunger sleeve. The open gear ring is fastened on the rotating sleeve with screws and meshes with the gear rod. The gear rod is installed in the longitudinal hole of the pump body and is connected with the governor lever. When the gear rod moves axially under the action of the joystick and the governor, the rotating sleeve and plunger on each oil pump also rotate by a certain angle. Plunger cartridges mounted on plunger flanges
The lower bearing plate of the spring.
A spring-loaded bearing plate is supported on the pump body. The function of the spring is to make the plunger go down. on the camshaft
The cam acts on the plunger through the roller body to make it move upward. The roller body is the transmission body between the cam and the plunger, which itself bears the side thrust and the plunger only receives the axial force. A roller is installed on the lower shaft of the roller body, which is mounted on the needle roller bearing, and the upper end of the roller body is screwed into an adjusting screw and a safety nut.
