How to maintain and service the Deutz BFM1013/BFM2012 engine intake system

 The most basic function of the intake system is to provide sufficient, dry and clean air to the engine while minimizing the intake temperature. Because the entry of unclean, dusty air into the cylinder is the main cause of abnormal wear of engine cylinder bores, valves, valve rings and valves. When dust enters the engine, it will cause excessive:

 

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*Valve wear

 *Cylinder liner wear

 *Piston ring wear Will cause: 

*Increased oil consumption 

*Difficult starting 

*Lack of power 

*Reduced life 

1  . Maintenance of air filters Most of the early wear problems of engines on the market are related to the use and maintenance of air filters. It is absolutely necessary to use high-quality air and properly maintain air filters. 1. Be sure to use designated high-quality air filters. There are many counterfeit and inferior air filters on the market. When purchasing, you must distinguish the authenticity and make multiple comparisons. You must never install unqualified air filters on your vehicle! Many users think that it doesn't matter if they install counterfeit and inferior air filters, as long as they clean the air filters frequently, but this is not the case. We recommend users to use Shanghai Fleetguard air filters, Changchun Fuao air filters, Langfang air filters, and Bengbu air filters. 

2.   Correct installation of air filters is also very important. When disassembling and installing air filters, do not miss the plastic deflector on the filter element, and install it correctly. Because the blades on the cover will cause the air to rotate, 80% of the dust is separated under the action of centrifugal force and collected in the dust cup. The dust reaching the filter paper is 20% of the inhaled dust, and the total filtration efficiency is about 99.7%.

Correct use of air filters will double the life of diesel engine related components. Improper use of air filters or use of inferior air filters will inevitably cause premature engine wear, damage to the supercharger impeller, oil burning, power failure and other faults, or even premature scrapping. In order to ensure that diesel engine products can play their functions correctly, please choose high-quality air filters and use them correctly.

 

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 Mismatched filter element

  "The filter element must be installed correctly

 

Be sure to purchase the filter from the engine manufacturer to ensure that the filter and air filter housing match perfectly. "Unmatched filter cores will cause unfiltered air to enter the intake system. Click here to add a spare tear

 

Air filter element is broken 

     * Before installation, be sure to carefully check whether the air filter element is broken * Put a light bulb in the air filter element to check through the light  

 

 

 The connecting hose on the air intake side is damaged 

 

 Intake pipe deformation, air leakage

  

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Intake pipe deformed, leaking 

* Leakage at the pipe clamp, even after tightening. 

 * Unfiltered air enters the engine directly. 

* Intake pipe must be replaced 

 

 

 

 

 The air intake pipe is deformed and leaking Leakage at the pipe clamp may occur even after tightening.

 

 

 

 Damage caused by dust 1. Wear of intake surface 

 

 

 

 

 

 

 

* Dust entering the engine acts as an abrasive, causing wear on the valve surface. 

* Incorrect valve clearance. 

* Low cylinder pressure, which ultimately leads to difficulty starting and insufficient power

 

 Damage caused by dust 2. Wear of intake valve stem

 

 

 

* Increased amount of lubricating oil between the valve guide and valve stem. 

* Carbon deposits form on the valve. 

* Oil consumption may increase.

 

 

 

 Damage caused by dust 3. Carbon deposits on the exhaust port

 

 

 

 * If the wear is caused by dust, carbon deposits will be found at the exhaust port.

 

 Damage caused by dust 5. Cylinder liner wear

 

 

 

 

 

 

* Between the top and bottom dead centers of the piston, you can clearly feel the wear marks with your fingers.

 

  * The original honing marks on the cylinder wall will disappear

 

 

 

 Damage caused by dust 6. Piston ring wear

 

 

     *  The piston ring surface and side surfaces are worn. 

    *   The oil ring groove is worn beyond the wear limit.

  *   This ultimately leads to increased oil consumption.

 

 

Damage caused by dust 7. Piston ring gap

 

 * Wear on the piston ring surface will increase the piston ring opening clearance and reduce the tension between the piston ring and the cylinder wall. 

 * The greatest wear occurs on the first ring and the oil ring. 

* The above figure shows a worn piston ring.

  * The following figure shows a correct piston ring.

 

 

 

 

This article introduces the maintenance and parts replacement cycle of the Deutz engine cooling system

This article introduces the maintenance and parts replacement cycle of the Deutz engine cooling system The coolants currently on the market are all prepared by the manufacturer and do not require users to add water. Please use antifreeze produced by regular manufacturers. Antifreeze produced by different manufacturers cannot be mixed. Antifreeze has excellent properties such as antifreeze in winter, anti-boiling in summer, anti-scaling and anti-corrosion all year round.

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Poor cooling leads to overheating damage 

 

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* Cylinder scuffing caused by insufficient cooling will be found near the piston pin hole on the piston skirt. 

 * No cylinder scuffing marks have been found on the upper part of the piston. * The material on the piston is stuck to the cylinder arm. 

* Cylinder scuffing marks have been found on the top and ring of the piston. 

 

 * The piston ring will be completely stuck in the piston ring groove. 

 
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Importance of changing the oil during the first maintenance of Deutz diesel engine

 Importance of the first maintenance of Deutz diesel engine

Oil change cycle and oil level check Place the engine and vehicle in a horizontal position, run at idle speed for 2 minutes before checking the oil level, and then stop.

 

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Check the oil level and add oil to "Max" if necessary. If the oil level is only slightly above the "Min" minimum scale, oil must be added

The oil level must be between the upper and lower lines of the dipstick. 

 If the oil level is too low, it will cause serious damage to the engine.   

The oil must be changed during the first maintenance of a new car, and the oil should be changed every 10,000 km thereafter.

Excessive oil level will cause:

 *Oil overflow. 

*Increased oil temperature. 

 *Foam. *Increased air content in the oil leads to bearing damage. 

 

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   Lack of oil leads to bearing damage

Running the engine with insufficient oil will cause bearing damage due to lack of oil. 

*The leftmost bearing shows typical tin plating friction marks on the bearing. 

 * The connecting rod bearing shown in the middle is worn out later, and a melted metal dot can be seen    on the lead-copper layer

 * The metal dot is found embedded in the tin layer of the main bearing shown on the right 

* All the above bearings are from the same engine and cannot be repaired. 

 

Connecting rod bearing cap broken due to lack of oil: 

 

 

 

* Overheating of the connecting rod bearing leads to insufficient tension of the connecting rod bolt. 

 

  * Further leading to the breaking of the connecting rod bolt. 

 

 * Eventually causing serious damage.

 

Carbon deposits on the piston ring and in the piston ring groove: The cylinder pull caused by the piston ring stuck is caused by the following reasons

 

 * Unqualified engine oil quality or adding different engine oil

 

 * Failure to change the engine oil on time 

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