SY/T 5048-1994 Specification for installation, operation and maintenance of 190 series diesel engines for oil drilling rigs
Some standard content:
Petroleum and Natural Gas Industry Standard SY/T of the People's Republic of China 5048-94
190 Series Diesel Engines for Oil Drilling Rigs
Installation, Operation and Maintenance Specifications
1994-04-06
China National Petroleum Corporation
1994-10-01Implementation
Subject Content and Scope of Application
Referenced Standards
Transportation and Installation
Operation
6 Maintenance·
7 Safety Requirements·
8 Fault Analysis and Troubleshooting
Appendix A Diesel Engine Operation Record Format (Reference) Table of Contents
Appendix B Diesel Engine Common Fault Analysis and Troubleshooting Method Tips (Reference) (1)
1 Subject Content and Scope of Application
Petroleum and Natural Gas Industry Standard of the People's Republic of China 190 Series Diesel Engines for Oil Drilling Rigs
Installation, Operation and Maintenance Specifications
SY/T 5048—94
Replaces SY5048-84
This standard specifies the handling and installation, operation, maintenance, safety requirements and troubleshooting of 190 series diesel engines for oil drilling rigs.
This standard applies to all types of 190 series diesel engines for oil drilling rigs (hereinafter referred to as diesel engines). 190 series diesel engines for other purposes can also be implemented by reference.
2 Reference standards
GB252 Light diesel oil
GB 11123L-ECD diesel engine oil
3 Terminology
3.1 Single engine
A diesel engine equipped with only the accessories absolutely necessary for the normal operation of the diesel engine and other matching accessories is called a single engine. The accessories necessary for the normal operation of the diesel engine include: water pump, fuel pump, oil pump, fuel filter, oil filter, oil cooler, governor and other accessories.
3.2 Matching machine
The diesel engine that is composed of a single machine and matching accessories is called a matching machine. Matching accessories include: air filter, cooling fan, cooling water radiator and other matching accessories. 4 Transportation and installationwww.bzxz.net
4.1 Transportation
4.1.1 Diesel engines are divided into single machine transportation and matching machine transportation. 4.1.2 When transporting a single machine, it should be lifted horizontally by lifting and hanging at the front and rear ends of the machine body, using lifting bars and wire ropes, and other parts should not be used for lifting. When transporting, it should be fixed on a bracket with sufficient rigidity. The supporting surface of the bracket should be flat. The bracket and the diesel engine should be bolted and fixed to the transport vehicle.
4.1.3 When transporting matching machines: it should be lifted by lifting and hanging at the front and rear ends of the chassis, using wire ropes. It is not allowed to be lifted by lifting and hanging on the machine body or other parts. When transporting, it can be directly placed flat on the transport vehicle and fixed to the transport vehicle. 4.1.4 The length of the wire rope used for lifting should be appropriate, and the hook of the lifting equipment should be more than 1m above the upper plane of the exhaust main pipe to ensure that the wire rope does not damage the diesel engine parts during lifting.
4.1.5 The diesel engine shall not be dragged on the ground. 4.1.6 When the diesel engine is transported, all the additional devices such as the external exhaust pipe and coupling shall be removed. All the outlets and outlets of the oil, water and air pipes on the diesel engine shall be sealed.
4.2 Installation foundation
4.2.1 The diesel engine and the chassis shall be installed on a sufficiently rigid base or a solid foundation, and the supporting surface shall be flat. Approved by China National Petroleum Corporation on April 6, 1994 and implemented on October 1, 1994
SY/ T 504894
4.2.2 When installing a single machine, a supporting frame shall be set up, and the bottom plane of the machine body and the supporting surface of the supporting frame shall be in contact and fastened with bolts. A common base should be used with the driven machinery. 4.2.3 When installing the supporting machine, the diesel engine chassis should be placed on the platform base or foundation, leveled and tightened; the fixing points should be evenly distributed. 4.3 Power output connection
4.3,1. The mutual positions of the diesel engine and the driven drilling rig linkage unit should be uniformly aligned and then firmly secured. Keep the relative position correct. 4.3.2 Rigid connection is not allowed between the diesel engine and the reduction box of the drilling rig linkage unit. 4.3.2.1 When using a universal coupling for connection, the end face of the diesel engine connector and the end face of the driven mechanical coupling plate should be within the range of 500m1m in diameter. The parallelism is 0.5m11m; the radial runout of the outer diameter of the driven mechanical coupling plate to the centerline of the diesel engine crankshaft is 1m1m: the axial displacement of the spline shaft of the universal coupling should be 15-20mm4.3.2.2 When a heavier connecting device such as a torque converter is used for connection, a separate bracket must be set up, the ears should be supported on the platform or the diesel engine body, and the cantilever must not be directly connected to the crankshaft. 4.3.2.3 When other connection methods are used, the installation position accuracy shall comply with the regulations of the corresponding connector; it is not allowed to directly install pulleys and other transmission parts on the power output plate for lateral power output. 4.3.3 The relative installation positions of several diesel engines used in the same drilling rig linkage unit should keep the transmission belt tension consistent. 4.3.4 After the output connection part is adjusted, the two connection plates need to be tightened with bolts: the tightening torque of the bolts is 250~280N·m. 4.4 Installation of oil, gas, water and electrical circuits
4.4.1. The interior of all external pipes must be clean and unobstructed, and the installation and arrangement must be neat: the connection must be firm; each connection should be well sealed without oil leakage, water leakage, or air leakage.
4.4.2 The fuel supply system should be equipped with two sets of fuel tanks for sedimentation and oil supply. The fuel should be statically settled in the sedimentation tank for more than 48 hours before being sent to the fuel supply tank for use.
The volume of the sedimentation tank shall not be less than 20m3, and the volume of the oil supply tank shall not be less than 2m3: the outlet of each oil tank shall be more than 120mm above the bottom surface; a filter device shall be installed at the oil inlet and outlet: there shall be a drain valve at the bottom of the oil tank. The oil outlet of the oil supply tank shall be located higher than the injection. 4.4.3 The engine oil used in the lubrication system shall be stored in a clean and closed oil tank, and shall be injected into the diesel engine for use only after sufficient sedimentation and strict filtration.
4.4.4 When the switchboard is used, a cooling water heat dissipation device matching its cooling system shall be installed. 4.4.5 Diesel engines have two starting modes: electric and gas. The requirements are as follows: a. For diesel engines that use gas starting mode, there should be an air tank and compressed air of sufficient capacity, and the air source pressure should be 600~900kPa; the inner diameter of the air tank outlet should not be less than the inner diameter of the air motor inlet; the capacity of the air tank should be able to ensure that the diesel engine can be started three times in a row (the volume of one hall is 4m2); the compressed air delivered should be purified and separated from oil and water; the air supply pipeline should be as short and straight as possible; l. For diesel engines that use electric starting mode, a 24V DC power supply should be installed; 4..6 Each diesel engine should be equipped with a separate intake and exhaust pipeline, with an air filter and a muffler respectively. 4.4.6.1 The following matters should be noted when installing the air filter and the intake pipe: a. The ventilation conditions around the air filter are good: b. The air filter should be away from the exhaust outlet; ℃. Diesel engines equipped with two air filters: their installation conditions should be the same d. The diameter of the intake pipe shall not be smaller than the compressor air port: e. The joints of the intake pipe shall be strictly sealed and there shall be no leakage 4.4.6.2 The following matters should be noted when installing the muffler and exhaust pipe: a. There should be a water outlet and a sewage valve in the muffler to prevent water and dirt from entering the cylinder; b. The exhaust duct and muffler should be supported separately: they shall not be directly supported on the exhaust main pipe or on other parts of the diesel engine;
C. When the diesel engine is equipped with an engine room, the exhaust duct and muffler should be installed outdoors and rain protection measures should be taken; l The exhaust duct should not be too long and have a sufficient inner diameter to ensure that the exhaust back pressure does not exceed 2kPa: 21
SY/ T 5048-94
e: The exhaust pipe and the diesel engine should be connected flexibly and should be as close to the exhaust port of the diesel engine as possible. 4.5 Installation location and environment
4.5.1 The installation location and surrounding environment of the diesel engine should be convenient for operation and maintenance to ensure the normal and safe operation of the diesel engine. 4.5.2 The diesel engine should be kept away from corrosive substances to ensure a clean environment. 4.5.3 The installation distance between diesel engines should not be less than 0.81m. No objects should be piled up within 1.5m around the diesel engine and 2m in front of the water tank. 4.5.4 The surface of the diesel engine should be wiped clean frequently, but it should not be directly flushed with water. 5.5 Under outdoor operation conditions, a canopy should be installed above the diesel engine to facilitate maintenance and prevent rain. 5 Operation
5.1 Preparation before starting
Before starting the diesel engine, the following preparations and inspections should be done: a. Appearance and installation condition: The diesel engine parts should be complete and intact, and the connections of various pipelines, chassis, connecting flanges, etc. should be correct, complete and firm: There should be no debris near the rotating parts such as the flywheel b. Fuel supply system: According to the climatic conditions of different regions, the fuel of No. 0, No. 10, No. -20 or No. -35 specified in GB252 should be selected: The fuel tank should be filled with sufficient fuel: The fuel must be in accordance with 4.4.2. Sedimentation and filtration: Connect the fuel system pipeline, exclude air, and allow the fuel to fill the fuel pump, fuel filter and injection pump under static pressure; C. Lubrication system: Lubricating oil is recommended to be 15W/40CD and 40CD diesel engine oil that meets the requirements of GB11123. Other brands of diesel engine oil with similar quality and performance can also be used; different brands of engine pools must not be mixed: The oil level should meet the requirements of the oil dipstick mark, and check the injection pump and the oil level in the governor at the same time: When the ambient temperature is below 5°C: The oil should be preheated to above 20°C; It is strictly forbidden to preheat the diesel engine with an open flame; Use a pre-supply oil pump or a manual oil pump to pre-supply the oil, and the oil pressure in the main oil channel should not be less than 100kPa:
d. Cooling system: Softened water must be used for cooling water, and additives must be added in an appropriate proportion. Softened water and additives must comply with the provisions of the product use and maintenance instructions; check whether the cooling water level in the two expansion water tanks has reached the specified position of the water mark: e. Starting system: When using gas starting, check the pressure of the gas tank, and the gas pipeline must not leak. When using electric starting, check that the battery voltage and electro-hydraulic density should be in a saturated state. f. Operation and safety protection devices: Check that the oil control device, parking handle, injection pump rack pull rod, low oil pressure automatic parking device and explosion-proof device should be intact and flexible, and the safety device should be in a normal state: g. Turning: After pre-supplying the engine oil, turn the crankshaft manually for at least two weeks, and there must be no jamming or abnormal phenomena; h. Supercharger: For new machines or those that are operated after long-term parking or after the supercharger has been overhauled, the supercharger should also be checked, the turbine should be turned, and there should be no foreign matter inside, and whether there is collision and jamming. 5.2 Starting
5.2.1 The diesel engine may be started only after the preparatory work specified in Article 5.1 has been completed and checked to be correct. 5.2.2 The starting method of the diesel engine shall be in accordance with the product use and maintenance instructions. 5.2.3 The following matters should be noted during the starting process of the diesel engine: a. After starting, the button should be released immediately; b. In the initial stage of starting, the speed should be controlled at 600-800r/min idling speed, check whether the operation is normal, and then gradually increase the speed; c. When starting three times fails, the cause should be found out and the fault should be eliminated before starting again; d. Each time the motor is started, the continuous operation of the motor shall not exceed 15s; when the electric start is completed, the continuous operation of the motor shall not exceed 5s: e. After the air-started diesel engine is started, the main air source valve should be closed immediately; the electric start oil-forbidden engine should immediately turn off the power switch f. When the electric start diesel engine is supplied with oil by the electric pre-supply pump, the continuous operation shall not exceed 2min each time, and the oil pressure shall not exceed 300kPa. 5.2.4 It is strictly forbidden to start by towing the linked diesel engine. 5.2.5 It is strictly forbidden to start with load.
5.3 Initial operation
SY/T504894
5.3.1 After the diesel engine is started, it should be run at no load first, and the following contents should be checked: a. The oil pressure is not less than 350kPas
b. The oil supply of the rocker arm bearing is normal;
c. The cooling water circulation is normal;
d. There should be no oil leakage, water leakage and air leakage; e. All parts are firmly fixed as required, and the diesel engine has no abnormal sound; f. The exhaust color is normal, and the breather gas is normal: whether the oil amount in the oil pan meets the requirements. 5.3.2 After the new engine (including the overhauled engine) runs normally at no load according to the requirements of 5.3.1, it can enter normal operation without running-in. However, after the first 50 hours of operation, all the engine oil should be replaced, and the oil pan and oil filter should be cleaned. 5.4 Normal operation
5.4.1 After the initial operation, the diesel engine can be loaded and enter normal operation only when the oil and water temperature rise to above 40℃. 5.4.2 When the diesel engine is working normally, the high-temperature circulating water temperature should be kept within 75-85℃, and the maximum outlet water and oil temperature should not be higher than 90℃. : The low-temperature circulating water temperature should not exceed 45℃; the oil pressure should be within the range of 400800kPa 5.4.3 When the diesel engine is running continuously for a long time (more than 12h), the load shall not exceed the continuous power; when it is running for a short time (not more than 121), the load shall not exceed the rated power (12h power). 5.4.4 The diesel engine should shorten the idling time as much as possible to prevent all abnormal phenomena caused by poor combustion; when not in use, it should be stopped in time.
5.4.5 During the use of the diesel engine, the efficiency of the diesel engine should be fully utilized and the operating conditions should be reasonably selected. 5.4.6 When multiple diesel engines are used in parallel, the loads of each diesel engine should be kept evenly connected, and the speed difference between them should not exceed 50r/min.
5.5 Parking
5.5.1 When the diesel engine is stopped under normal working conditions, the load should be gradually unloaded, the speed should be reduced to idle speed, and the engine can be stopped only when the oil and water temperature drops below 60℃. It is strictly forbidden to park the engine with load. 5.5.2 If the following phenomena occur during the use of the diesel engine, the corresponding method should be adopted for emergency parking, and the oil should be pumped and the engine should be checked immediately: a. If a fault endangers the safety of personnel and equipment occurs, the oil supply should be interrupted and the engine should be stopped urgently; b. If the oil control system fails or flammable gas appears in the workplace, the engine should be stopped urgently using explosion-proof devices; under normal circumstances, parking with explosion-proof devices is not allowed.
5.5.3 The following matters should be noted after the diesel engine is stopped: a. When the ambient temperature is lower than 5℃: antifreeze measures should be taken; b. When the ambient temperature is lower than the freezing point of the engine oil, the engine oil should be drained; c. When the engine oil needs to be replaced, the engine oil should be drained; d. Eliminate the faults that occur during operation and perform maintenance according to regulations; e. If it is stopped for a long time, it should be sealed according to the sealing requirements. 6 Maintenance and maintenance
6.1 Types of maintenance and maintenance
6.1.1, The inspection and maintenance of diesel engines are divided into five types: daily, weekly, monthly, handover and special maintenance. 6.1.2 The maintenance and maintenance of diesel engines shall be carried out by the diesel engine driver in a timely manner according to the requirements of various maintenance items. During the use process, if there are special circumstances, they should be handled in time to ensure the normal operation of the diesel engine. 6.2 Three maintenance
SY/ T 5048-94
Diesel engine drivers of each shift should complete the following daily maintenance of diesel engines at any time according to the operation of the diesel engine: a. Check the oil level in the fuel tank:
b. Check whether the oil level in the oil pan, fuel injection and speed governor has increased or decreased abnormally, and check the oil quality and add oil if necessary:
c. Check the water level in the radiator tank and add cooling water and anti-rust liquid if necessary; d. Check the air source pressure for air-start diesel engines: Check the battery charging status for electric-start diesel engines to ensure that it meets the requirements; e. Wipe the surface of the diesel engine to keep it clean; f. Check all connecting and fastening parts to ensure that all parts are fastened normally: g. Pay close attention to the parameter values indicated by each instrument, and pay special attention to the changes in oil pressure and oil and water temperature; h. Observe the exhaust status of the diesel engine: Monitor the sound of the diesel engine. If any abnormality is found, the cause should be promptly identified and eliminated: 1. Check and eliminate oil, water and air leakage of the diesel engine; ji Fill in the operation record according to the recommended format of Appendix A (reference). 6.3 Maintenance
After the diesel engine runs for one week, the following weekly maintenance should be carried out:a. Complete all items specified in the daily maintenance;b. Check and clean the air filter. If the working environment is windy and sandy, the cleaning cycle should be shortened according to the actual situation;d. Drain the accumulated water and sediment in the fuel tank and fuel filterd. Drain the accumulated water in the air tank and oil-water separator;e. Clean the respirator filter
f. Check the working conditions of the plunger springs, oil adjustment gear ring and gear rod of the spray pump and spray engine oil to prevent rust6.4 Monthly Maintenance
After the diesel engine runs for one month: the following maintenance should be carried out:a. Complete all items specified in daily and weekly maintenance; b. Clean the fuel filter;
c. Check the oil filter inlet and outlet pressure difference. If it is greater than 150kPa, the paper filter element should be replaced. d. Clean the centrifugal filter:
e. Replace the engine oil according to the oil quality in the oil pan. Generally, the replacement cycle of 15W/40CD diesel engine oil is 700hf. Replace the engine oil in the injection pump and governor;. Add grease to each lubrication point according to the requirements of the use and maintenance instructions; h. Check and adjust the valve clearance and fuel advance angle; i. Check the injection pressure of the injector, observe the atomization quality, and clean or adjust it when necessary: Check and clean the main filter element and coarse filter of the air filter k. When an alarm device is installed, the sensor of the alarm system should be calibrated; I. Disassemble and clean the throttle control device, and add grease m. Check whether the elastic element of the elastic coupling has cracks and replace it if necessary. 6.5 Seasonal maintenance
Before the diesel engine is operated in winter or summer, it should be subjected to seasonal maintenance. The specific time is determined according to the local climate conditions. The maintenance items are as follows
1. Complete all items specified in the daily, weekly and monthly maintenance: b. Clean the cooling system: replace the cooling water according to different seasons C.Clean the lubrication system and replace the engine oil if necessary; d. Clean the fuel tank and replace the corresponding brand of fuel according to different seasons: e: Clean the oil and carbon deposits on the turbocharger compressor volute and impeller; 5
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f. Check and verify the safety protection devices such as the low oil pressure automatic parking device, overspeed parking device, explosion-proof device, etc.: S. Verify all instruments and alarm devices:
h, Check and adjust the fan transmission device and airbag clutch and other devices and air seals: i. Check the starting device;
i Check the safety protection devices such as the protective cover:
k. Disassemble and inspect, and clean the oil cooler
L Disassemble and inspect, and clean the intercooler;
, m. Clean the radiator tank;
Check the lubricating oil (grease) status of all lubrication points: add or replace lubricating oil (grease) 0. Verify all valves of the lubrication system and fuel system. 6.6 Specific maintenance
Specific maintenance includes drilling maintenance, maintenance after 250 hours of operation of a new machine, and maintenance after 3000 hours of cumulative operation. Depending on the specific situation, it can be carried out at the same time as monthly maintenance and seasonal maintenance.
6.6.1 After drilling each well, before and after the relocation of the well team, the diesel engine should be subjected to drilling maintenance. The specific time and items of maintenance shall be determined by the user unit according to the actual situation.
6.6.2 After the new machine has run for 250 hours, the tightness of the cylinder head bolts, exhaust pipe fixing bolts, rocker arm seat, etc. shall be checked, and tightened if they do not meet the requirements.
6.6.3 After the diesel engine has run for 3000 hours, the cylinder head shall be disassembled and inspected, the exhaust duct shall be cleaned, and the valve shall be equipped and polished as appropriate. 7 Safety requirements
The use and operation of the diesel engine shall be carried out in accordance with the provisions of this standard and the use and maintenance instructions, and the operator shall be qualified before taking up the post.
The low oil pressure automatic waiting device, overspeed parking device, explosion-proof device and other safety protection devices should be intact, with excellent performance and workability. 7.3F
All protective covers should be complete and intact.
No one should stand on both sides of the flywheel during the start-up of the diesel engine. No one should stay on both sides for a long time during normal operation. It is strictly forbidden to use open flames to heat and bake the diesel engine, and it is forbidden to ignite open flames near the diesel engine. 7.5
It is forbidden to store various flammable and explosive items near the diesel engine. 7.6
7.7Fire-fighting equipment should be installed in the engine room according to fire protection requirements. Fault Analysis and Troubleshooting
The common fault analysis and troubleshooting methods of diesel engines are shown in Appendix B (reference): 6
The recommended format of diesel engine operation records is as follows. SY/T 5048-94
Appendix A
Diesel engine operation record form
(reference)
Go: I>If conditions permit, add a diesel engine load column and fill in the load. When the diesel engine stops due to a fault: the stop time and reason should be filled in truthfully 3 Each diesel engine should have a record book, fill in one page per shift, fill in at least once every hour, and save it after use. Diesel engine factory number:
Operation time
Maintenance and
Repair record
Using unit:
Actual operation time Cumulative operation time
Time:
Shift:
Main oil channel pressure
Operator:
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Appendix B
Common Fault Analysis and Troubleshooting Tips for Diesel Engines (Reference)
During the operation of the diesel engine, the operator should pay close attention to its working status, promptly discover abnormal phenomena (i.e. faults), find out the causes, and eliminate them in time. B2 Before troubleshooting, the fault symptoms should be carefully observed, and the use, repair and maintenance of the diesel engine should be understood in detail. The repair method should be determined according to the principle of easy first and difficult later, simple first and complex later. It is strictly forbidden to dismantle the machine at will to avoid fault inspection. B3 Common Fault Analysis and Troubleshooting Tips for Diesel Engines are shown in Tables B1 to B18: a, difficult to start or unable to start, see Table B1, b. Insufficient power, see Table B2;
c. Uneven operation, see Table B3;
d. Sudden stop, see Table B4:
e. Running fast, see Table B5;
f. Low oil pressure, see Table B6
9. Oil temperature is too high, see Table B7:
h. Oil dilution, see Table B8;
i. Exhaust temperature is too high, see Table B9;
Abnormal main respirator exhaust, see Table B10
k. Cooling water temperature is too high, see Table B1:
1. Exhaust smoke, see Table B12:
m, exhaust blue smoke, see Table B13:
n. Exhaust white smoke, see Table B14;
0. Excessive vibration, see Table B15;
P. Abnormal noise, see Table B16:
4-Turbocharger failure, see Table B17;
1. Oil mixed in cooling water, see Table B18.
Table B1 Starting is difficult or cannot start
Starting motor is damaged
Poor engagement between starting motor and gear ring
Insufficient air source pressure
Insufficient volume of pressure storage tank
Air pipe system is stale
Relay air can not be opened
Oil control valve or air control valve is hot
Electrical components (starting switch, relay) are out of orderBattery is not charged enough
Poor contact of electrical circuit
Repair or replace starting motor
Adjust the installation position to make it mesh normally
Inflate to the specified pressure
Increase the volume
Exhaust Eliminate air leakage
Disassemble, inspect and clean, add appropriate amount of lubricating oil
Disassemble and pick up the oil control valve or air control valve
Inspect or replace components
Failure in the intake and exhaust system
Use and maintenance
Lack of fuel or the fuel tank valve is not opened
The fuel quality does not meet the requirements or contains water
The fuel tank is installed too low
There is air in the high-pressure oil pipe
The air in the fuel system is not exhausted
The fuel filter is blocked or the rotary valve is not opened
The injector is blocked or dripping, leaking
The injection pump fuel supply advance angle is incorrect
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Continued Table B1
Troubleshooting
Add fuel and clean the valve
Replace the specified brand of fuel and remove the water in the fuel tank. Install the fuel tank according to the specified requirements
Pry the timing screw to move the plunger up and down and exhaust the air in the pipe. Exhaust the air in the fuel system
Clean the fuel filter and open the rotary valve
Clean or replace the injector nozzle parts
Adjust the fuel supply advance angle
The oil quantity adjustment gear rod of the injection pump is stuck and the gear rod is not in the refueling position. The control valve core of the overspeed parking device and the shut-off valve core of the fuel pipe have not returned to their positions. The paper core of the air filter is clogged
The intake pipe is clogged
The valve timing is incorrect
Intake and exhaust valves or piston rings. Cylinder vortex, insufficient positive contraction force, low oil temperature, high viscosity
Insufficient oil supply pressure of pneumatic pre-supply pump
Low oil pressure, automatic parking device joystick is not pulled down (single pressure type), diesel engine temperature is too low
Continuous total speed operation for a long time
Butterfly door of explosion-proof device is closed
Repair or replace
Press the return pusher and adjust the return position
Clean the air filter
Clean the steam inlet pipe
Resize and adjust the valve timing
Repair the intake and exhaust valves, replace the piston ring or cylinder gasket Preheat the engine oil
Control the air source pressure or inspect the pre-supply pump
Pull the joystick to disengage the fork and the positioning block and fully warm up the engine
Eliminate carbon deposits in diesel engine, wash injector, open explosion-proof device butterfly valve
Table B2 power is not enough
Poor oil quality or contains water
Blocked fuel line, leaking fuel line
Blocked fuel filter
Blocked fuel injector, poor atomization
Incorrect fuel supply timing
Injection system limit seal is damaged, insufficient fuel injection, fuel pump column purple parts are seriously worn
The limit screw seal of speed governor rated working position is damaged, the oil head extension is not up to the requirements
Injection pump cam is seriously worn
The governor rod screw is screwed in too much, and the injection gear rod is not flushed out long enough
Replace qualified fuel.Remove water from the oil tank
Clear the oil line and inspect the oil pipe
Clean the filter
Clear, inspect or replace
Recalibrate the oil supply timing
Re-test the oil supply
Replace the parts and debug
Re-debug and debug
Re-adjust as required
Re-adjust
Speed governor failure
Air filter is clogged
Air filter paper core is damp
Intake and exhaust passages are clogged
Valve timing is incorrect
Exhaust valve seat is seriously sunken
Air leakage at cylinder or piston ring
Intake and exhaust valves are leaking
Intercooler is dirty
Intake and exhaust cams are seriously worn
The compressor to diesel engine intake pipe is not sealed tightly. Exhaust pipeline resistance Too large, the muffler does not match the high temperature or the air is thin in the plateau area
The supercharger is blocked
The supercharger is improperly matched, the intake pressure is low
The intake temperature is too high
The water line of the intercooler is blocked
There is air in the fuel line or injection system
The fuel injector is dripping, leaking or blocked
The injection pump plunger is broken or the elasticity is insufficient
The injection pump plunger is stuck Dead
The oil outlet valve spring is broken or the valve is stuck
The injection pump oil quantity adjustment gear ring is loose
The gear rod and gear ring are seriously worn
The gear rod is stuck and not flexible
Too much oil in the governor
The flywheel bushing is seriously worn
The governor buffer spring is broken or seriously worn
The governor moving parts are worn, the clearance is too large or the belt is stuck10-
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Continued Table B2
Cleaning the air filter
Remove the paper core in rainy season
Cleaning the intake and exhaust passages
Inspect and adjust
Replace the cylinder head
Replace the cylinder gasket and piston ring
Repair the valve
Cleaning the intercooler
Disassemble and inspect and replace the seals
Increase the exhaust pipe section, shorten the length, and select the appropriate muffler. Select the appropriate model
Cleaning the dirt and carbon deposits on the supercharger
Select the appropriate Model of supercharger Check intercooler water pump
Clean intercooler
Uneven operation
Remove air from the system
Inspect or replace parts
Replace plunger spring
Replace plunger parts
Replace spring, inspect oil discharge parts
Adjust oil volume and tighten locking screws
Replace related parts
Inspect or replace gear rod
Drain excess oil
Replace fly iron bushing
Replace oil buffer spring
Inspect or replace parts
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