Diesel engine maintenance technical service (B-level maintenance)

Secondary maintenance inspection
In each secondary maintenance inspection, all primary maintenance and inspection items must be completed, and the following items must be added:
WARNING: Adherence to regular secondary maintenance inspections is very important for the complete maintenance of the generator. A direct result of diesel engine operation (including load factor and fuel consumption) is contamination of the oil. After repairing the diesel engine, the re-added oil must be new oil, not the oil released from the oil pan.
<1>Replace diesel engine oil and oil filter
1. Start the diesel engine to make it reach the working temperature, stop and remove the oil drain plug (or open the oil drain switch) from the bottom of the oil pan to release the oil.
2. Reinstall the oil inlet plug, and the tightening torque of the plug: for CumminsLTA10, 6CT, 6BT, 4BT, and Perkins1306, 9TAG, 1006TG and below, use 35-40 ft-lbs (47-54 N.m); for Cummins NTA855, K19, Perkins 2006TAG use 45-55 ft-lb (61-75 N.m); for Cummins V28, K38, K50 and Perkins 3008TAG, 3012TAG, use 60-70 ft-lb (81-9 N.m) above.
3. Unscrew the combined oil filter, fill the new oil filter with the specified type of oil, tighten it by hand until the gasket touches the filter, and then tighten it by 1/2 to 3/4 turns.
NOTE: Tool tightening will deform or crack the filter head.
4. Fill the crankcase with the specified type of oil to the “H” high mark on the oil dipstick.
5. Start the diesel engine and visually check for oil leakage.
6. Stop the diesel engine, wait for 15 minutes after the standby oil flows back into the oil pan, check the oil level with the oil dipstick again, and add it if necessary.
<2>Replace diesel filter, water grid and air filter
Remove the diesel filter, water grid and air filter, and fill the new diesel filter with clean diesel oil. The water grid can be installed directly without adding water. ”, clean the air filter interface or dust tray before installing it.
<3> Cleaning the crankcase ventilator
Disassemble the crankshaft to calculate the ventilator body, use the specified cleaning solvent to clean the metal parts and rubber parts, and then check the installation, and replace the deformed and damaged parts.
Note: CUMMINS&PERKINS diesel engines usually replace the oil, oil filter, diesel filter, water grid every 250 hours or half a year (whichever comes first), add DCA anti-rust water if necessary, and replace the air filter after 450 hours of operation device.
Warning: The oil to be replaced must conform to the original oil with the label, and the filter should use the original or accessory parts with reliable quality, otherwise it will cause damage to the diesel engine or catastrophic damage such as burning the crankshaft and pulling the cylinder.