

The Doosan Generator G40WMI-2A-T2 (B50) is a robust industrial generator designed for reliable power generation in various applications. Known for its efficiency and durability, this generator model ensures optimal performance and minimal downtime, making it an ideal choice for demanding environments.
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Tensioning Guide
Belt-diagram
C-120 pulleys
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Pre-built workflows to keep your asset running smoothly.
Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Drive Motor
B2 Rollers
Tensioning System
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Doosan Generator G40WMI-2A-T2 (B50)
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1 Yearly Engine Maintenance
Check Engine Shutdown System Switches (setting)
Engine Radiator
Replenish with a fresh mixture every twelve months
20000 Hourly / 3 Monthly Alternator Bearings Replacement
Safety Measures
• Servicing or troubleshooting must be carried out strictly in accordance with instructions so as to avoid the risk of accidents and to maintain the machine in its original state.
• All such operations performed on the alternator should be undertaken by personnel with training of electrical and mechanical components.
• Before any intervention on the machine, ensure that it cannot be started by a manual or automatic system and that you have understood the operating principles of the system.
1. The bearings are greased for life: approximate life of the grease (depending on use) = 20,000 hours or 3 years.
2. Monitor the temperature rise in the bearings, which should not exceed 60°C above the ambient temperature.
3. Should this value be exceeded, the machine must be stopped and checks carried out.;
6 Monthly Engine Maintenance
1. Fuel/Water Separator
• Every six months or 500 hours, or less if fuel is of poor quality or contaminated, replace the bowl elements(s).
2. Engine Radiator
• The engine coolant system is normally filled with a 50/50 mixture of water and ethylene glycol.
• This permanent type anti-freeze contains rust inhibitors and provides protection to -35°F (-37°C). The use of such a mixture is recommended for both summer and winter operation.
• When using water alone, be sure to add a reputable brand of rust inhibitor to prevent internal corrosion.
• It is recommended to test the freezing protection of the coolant every six months or prior to freezing temperatures. Replenish with a fresh mixture every twelve months.
3. Check Control Compartment (Interior).
4. Drain Fuel Tank.
500 Hourly / 3 Monthly Air Cleaner Maintenance
Proper maintenance of the air cleaner provides maximum protection against airborne dust.
Squeeze the rubber valve (precleaner dirt dump periodically to ensure that it is not clogged).
To service the air cleaners, proceed as follows:
Remove filter element.
Inspect air cleaner housing for any condition that might cause a leak and correct as necessary.
Wipe inside of air cleaner housing with a clean, damp cloth to remove any dirt accumulation. This will permit better seal for gasket on filter element.
Install element.
The air cleaner assembly (housing) should be inspected every 3 months or 500 hours for any leakage paths.
Make sure the inlet is free from obstruction.
Alternator Maintenance
Safety Measures
• Servicing or troubleshooting must be carried out strictly in accordance with instructions so as to avoid the risk of accidents and to maintain the machine in its original state.
• All such operations performed on the alternator should be undertaken by personnel with training of electrical and mechanical components.
• Before any intervention on the machine, ensure that it cannot be started by a manual or automatic system and that you have understood the operating principles of the system.
1. Cooling circuit
• It is advisable to check that circulation of air is not reduced by partial blocking of the suction and discharge louvres: mud, fibre, grease, etc.
2. Electrical servicing
• Cleaning product for the windings
WARNING! Do not use: Trichlorethylene, perchlorethylene, trichloroethane and any alkaline products.
Access the parts list for your equipment in MaintainX.
Protec Eng Fluid - 1 gal
36875938
Engine Fuel Element
22712475
Engine Oil Filter Element
22712467
250 Hour Maintenance Kit (& engine fluids)
44000388
Air Cleaner Element (Engine) Primary
35393685
Protec Eng Fluid - 1 gal
36875938
Engine Fuel Element
22712475
Engine Oil Filter Element
22712467
250 Hour Maintenance Kit (& engine fluids)
44000388
Air Cleaner Element (Engine) Primary
35393685
Protec Eng Fluid - 1 gal
36875938
Engine Fuel Element
22712475
Engine Oil Filter Element
22712467
250 Hour Maintenance Kit (& engine fluids)
44000388
Air Cleaner Element (Engine) Primary
35393685
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