How to properly maintain a diesel engine?
by Megawatts - Updated At 2025-05-28
Diesel engines provide a steady supply of power for equipment and are widely used in production and operations. Since diesel engines are highly precise machines, proper maintenance during use is crucial.
Diesel engine maintenance can be broadly divided into daily maintenance and regular maintenance. This article uses the Kubota engines commonly installed in Lingong Heavy Machinery equipment as an example to outline the specific methods.
Daily Maintenance
Daily maintenance involves inspecting the engine after completing a shift, following these seven steps:
① Inspect and clean the exterior of the machine, checking for any oil, water, or air leaks.
② Check the engine oil level using the dipstick. After the engine has been parked for 30 minutes, ensure it is in a horizontal position. The oil level should be between the two markings: if there is an increase in oil, carefully investigate the cause; if the oil level decreases, top up with the same type of oil and continue to monitor after a period of operation.
③ Check the coolant level and top up if insufficient.
④ Check the fuel level and top up if insufficient.
⑤ Inspect the belts for loosening or damage, and tighten or replace as needed.
⑥ Inspect all connection points for tightness; if any are loose, retighten them.
⑦ Address any abnormal issues during engine operation.
Regular Maintenance
Regular maintenance is typically divided into several levels, with each level specifying different maintenance items based on the scope, depth, and maintenance cycle of the work.
① The first regular maintenance should be performed after the new engine has operated for 50 hours, primarily involving the replacement of engine oil and the engine filter.
② Every 250 hours, clean the air filter, clean the fuel filter, and check the battery condition. Every 500 hours, replace the engine oil, oil filter, fuel filter, and engine belt, and clean the water hose and radiator interior.
③ Every 1,000 hours, check the valve clearance; if the clearance is too large, re-adjust it.
④ Charge the battery every one to two months.
⑤ Every 1,500 hours, inspect the fuel injector spray conditions, check the fuel injection pressure, and inspect the oil seal integrity of the fuel injector valve seat.
⑥ Every 3,000 hours, inspect the turbocharger, check the oil seal integrity of the pump core, inspect the outlet valve, and verify the fuel injection timing.
⑦ Replace the engine oil annually (if the vehicle has not been used for an extended period and has operated for less than 500 hours), and replace the air filter.
⑧ Replace the coolant, all fuel and oil hoses, and the battery every two years.
The above are the maintenance guidelines for diesel engines. Proper maintenance significantly extends engine lifespan, reduces failure rates, and improves equipment availability. Therefore, please take these guidelines seriously and ensure regular and routine maintenance is performed.
Previous And Next
-
Previous Post:
BLOG
Megawatts BlogIntroducing the components of a diesel engineIntroducing the components of a diesel engine A diesel generator set is a type of internal combustion generator set and is currently one of the most widely used power generation devices in the world.... -
Next Post:
BLOG
Megawatts BlogThe Top Ten Most Common Faults in Diesel EnginesThe Top Ten Most Common Faults in Diesel Engines Fault 1: Diesel Engine Emitting Smoke Solution: 1. Turbocharger malfunction; 2. Poor sealing of valve components; 3. Malfunction of the fuel injec...
Read More
-
BLOG
Megawatts BlogDiesel Generator Stalls After 5 Mins? A Step-by-Step Diagnostic Checklist for MechanicsIt is one of the most frustrating scenarios for any field mechanic: the diesel generator cranks perfectly, fires up smoothly, but unexpectedly stalls after just five minutes of running under load. You... -
BLOG
Megawatts BlogDefeating Water Emulsification: How a Premium Fuel Water Separator Filter Protects Common Rail SystemsWhen a heavy-duty diesel engine experiences a sudden, catastrophic fuel injector failure, the root cause is rarely a factory defect. More often than not, the true assassin is invisible to the naked ey... -
BLOG
Megawatts BlogIn-Frame vs. Out-of-Frame Engine Overhaul: Cost Analysis and Part Replacement Strategy for Fleet ManagersEvaluating an in-frame vs out-of-frame overhaul requires fleet managers to prioritize long-term asset ownership and labor efficiency over simple upfront repair bill comparisons. Executing a standard i... -
BLOG
Megawatts BlogHigh Coolant Temp Combined With Low Oil Pressure: Diagnosing Interconnected Cooling and Lubrication System FailuresWhen your dashboard suddenly illuminates with simultaneous warnings for low oil pressure and high coolant temperature, your heavy-duty engine has entered a critical danger zone. This dual failure is r...
Subscribe to enjoy 10% off
Stay informed about new products and sales
-
INFORMATION
Contact Us
-
CHINA SALES OFFICE: No. 2-11, No. 8, Gaotai Road, Gaishan Investment Zone, Cangshan District, Fuzhou, Fujian
-
SAUDI ARABIA FACTORY: 7264 Shakra, Al Faisaliyyah, REFB3035, 3035, Riyadh 12883
-
COLOMBIA SALES OFFICE: 92-32 26th Street, 03-118, Bogota
-
NIGERIA FACTORY: Plot 5 Chivita Avenue Ajao Estate Isolo Lagos
-
Email:sales@megawattsparts.com
Follow Us
Copyright © 2025 Megawatts All Rights Reserved.
Select Previous Button or Search Directly on Search Bar!
Shop All
English
Currency: <{ pagedata.current_currency }>(<{ pagedata.current_currency_code }>)
Are you in the right place?
You agree to MegaWatts.com's Terms of Use and Privacy Policy by subscribing. You may receive emails with useful tips, promotions, and offerings.
No, thanks. I'd rather pay full price.
