Kubota Wg3800 Engine
The Kubota WG3800 is a versatile industrial engine designed to meet various customer needs. It is available in gasoline, LPG, natural gas, and dual fuel (gasoline and LPG) versions. This 4-cylinder, 3.769-liter engine features a bore and stroke of 100.0 x 120.0 mm and is naturally aspirated.
The WG3800 complies with EPA Tier 2 and CARB Tier 3 emission regulations, utilizing a three-way catalyst for aftertreatment. It delivers a rated output of 65.0 kW (87.1 HP) at 2600 rpm and a maximum torque of 256.0 Nm (188.9 lb-ft) at 1400 rpm. The engine’s dimensions are 700 x 579 x 799 mm, with a dry weight of 288 kg.
Based on Kubota’s reliable V3800 diesel engine, the WG3800 incorporates spark-ignition technology and offers low vibration and noise levels. It features a zero-maintenance valve timing control system using a rugged helical front gear train, which is more durable than timing belt or chain designs.
The engine employs a coil-on-plug ignition system, eliminating spark plug wires and increasing reliability. Spark plug replacement intervals are set at 2,000 hours. A knock sensor protects the engine from damage caused by detonation or knock.
Durability is enhanced with high-temperature alloy exhaust valves and seats fitted into a robust cast iron cylinder head. The engine also includes water-resistant ignition system connectors for reliable operation in various climates.
Kubota offers a 2-year or 2,000-hour limited warranty on the WG3800 engine. Its fuel flexibility and compatibility with both spark-ignition and compression-ignition engine installations make it suitable for a wide range of applications. The WG3800 is designed to deliver reliable power in various settings, including remote operations like wellheads in Australia.
Kubota Wg3800 Specs
The Kubota WG3800 is a versatile 4-cylinder industrial engine available in gasoline, LPG, natural gas, and dual fuel (gasoline and LPG) versions. It has a displacement of 3.769 liters with a bore and stroke of 100.0 x 120.0 mm. The engine is naturally aspirated and complies with EPA Tier 2 and CARB Tier 3 emission regulations, utilizing a three-way catalyst for aftertreatment.
The WG3800 delivers a rated output of 65.0 kW (87.1 HP) at 2600 rpm for the gasoline and natural gas versions, while the LPG version produces 70.0 kW (93.9 HP) at 2600 rpm. The maximum torque is 256.0 Nm (188.9 lb-ft) at 1400 rpm. The engine’s dimensions are 745 x 584 x 799 mm (length x width x height), with a dry weight of 288 kg.
This engine features a zero-maintenance valve timing control system using a rugged helical front gear train, which is more durable than timing belt or chain designs. It employs a coil-on-plug ignition system, eliminating spark plug wires and increasing reliability. Spark plug replacement intervals are set at 2,000 hours.
The WG3800 is equipped with a knock sensor to protect against damage caused by detonation or knock. It also includes high-temperature alloy exhaust valves and seats fitted into a robust cast iron cylinder head for enhanced durability. The engine features water-resistant ignition system connectors for reliable operation in various climates.
Kubota offers a 2-year or 2,000-hour limited warranty on the WG3800 engine. Its fuel flexibility and compatibility with both spark-ignition and compression-ignition engine installations make it suitable for a wide range of applications, including forklifts, generators, and wellhead operations.
The engine’s alternator capacity is 12V-100A, and it features a 12V-2.5kW starter. The oil pan capacity is 12.2 liters. The WG3800 offers low vibration and noise levels, making it suitable for various industrial applications requiring reliable power output.
Kubota Wg3800 Applications
The Kubota WG3800 engine is a versatile industrial engine designed for various applications across different sectors. It is commonly used in construction and industrial equipment, particularly in forklifts and generators. The engine’s fuel flexibility makes it suitable for a wide range of uses, as it is available in gasoline, LPG, natural gas, and dual fuel (gasoline and LPG) versions.
In the oil and gas industry, the WG3800 is well-suited for wellhead gas operations, including pump jacks, compressors, and vapor recovery units. Its durability and reliability make it ideal for the harsh environments found in oil and gas fields.
The engine’s low vibration and quiet operation characteristics make it suitable for indoor applications as well. It can be used in non-highway machines on work sites, such as sweepers, road rollers, excavators, telehandlers, and wheel loaders.
The WG3800 is also appropriate for use in aerial lifts, where its compact size and power output are advantageous. Its compatibility with both spark-ignition and compression-ignition engine installations provides flexibility for equipment manufacturers who need to offer different fuel options for their products.
In the agricultural sector, the WG3800 can power various types of farm equipment and irrigation systems. Its ability to run on different fuel types makes it versatile for use in remote locations where specific fuel availability may be limited.
For stationary power applications, the WG3800 is suitable for powering generators in both prime and standby power scenarios. Its compliance with emission regulations makes it a good choice for applications in areas with strict environmental requirements.
The engine’s design, based on the reliable V3800 diesel engine, allows for easy integration into existing equipment designs that previously used diesel engines, providing manufacturers with a straightforward path to offering gaseous fuel options in their product lines.
Kubota Wg3800 Parts
The Kubota WG3800 engine has several key components and parts that contribute to its performance and reliability. The engine block and cylinder head are made of durable cast iron. It features a zero-maintenance valve timing control system using a rugged helical front gear train.
The ignition system utilizes a coil-on-plug design, eliminating the need for spark plug wires. The spark plugs have a replacement interval of 2,000 hours. Water-resistant ignition system connectors are used for improved reliability in various climates.
The engine is equipped with high-temperature alloy exhaust valves and valve seats fitted into the cast iron cylinder head. This design enhances durability, especially for applications like wellhead duty.
A knock sensor is incorporated to protect the engine from damage caused by detonation or knock. This sensor detects vibrations and provides feedback to the ignition system to adjust spark timing as needed.
The fuel system components vary depending on the specific fuel type (gasoline, LPG, or natural gas). For dual fuel versions, additional parts are included to allow switching between fuel types.
Other notable parts include:
– Alternator (12V-100A capacity)
– Starter motor (12V-2.5kW)
– Oil pan (12.2 liter capacity)
– Cooling system components
– Air intake and filtration system
– Exhaust system with three-way catalyst for emissions control
The engine’s design allows for various accessory mounting options and maintains compatibility with many applications that previously used diesel engines. This includes provisions for power take-off (PTO) attachments.
For maintenance and repairs, Kubota offers a range of genuine replacement parts through their authorized dealer network. It’s important to use OEM parts to maintain the engine’s performance and reliability, as well as to comply with emissions regulations and warranty requirements.
Kubota Wg3800 Parts Manual
The Kubota WG3800 engine parts manual provides detailed information on the components and assemblies of this industrial engine. While a comprehensive parts manual is not publicly available, some key components and systems of the WG3800 can be described based on available information.
The engine block and cylinder head are made of durable cast iron. The cylinder head contains high-temperature alloy exhaust valves and valve seats, which are especially important for applications like wellhead duty that require enhanced durability.
The valve timing system uses a rugged helical front gear train, which is designed to be zero-maintenance and more durable than timing belt or chain designs. This system controls the opening and closing of the intake and exhaust valves.
The ignition system employs a coil-on-plug design, eliminating the need for spark plug wires. The spark plugs have a replacement interval of 2,000 hours. Water-resistant ignition system connectors are used to ensure reliable operation in various climates.
A knock sensor is incorporated to protect the engine from damage caused by detonation or knock. This sensor detects vibrations and provides feedback to the engine control unit to adjust spark timing as needed.
The fuel system components vary depending on the specific fuel type (gasoline, LPG, or natural gas). For dual fuel versions, additional parts are included to allow switching between fuel types.
Other notable parts include:
– Alternator (12V-100A capacity)
– Starter motor (12V-2.5kW)
– Oil pan (12.2 liter capacity)
– Cooling system components
– Air intake and filtration system
– Exhaust system with three-way catalyst for emissions control
The engine’s design allows for various accessory mounting options and maintains compatibility with many applications that previously used diesel engines. This includes provisions for power take-off (PTO) attachments.
For maintenance and repairs, Kubota recommends using genuine replacement parts available through their authorized dealer network. These parts are designed to maintain the engine’s performance, reliability, and compliance with emissions regulations.
Kubota Wg3800 Oil Type
The Kubota WG3800 engine requires high-quality engine oil to ensure optimal performance and longevity. For this engine, Kubota recommends using API (American Petroleum Institute) certified engine oils. The recommended oil grade is 10W-30 for most operating conditions.
In colder climates or for cold starts, 5W-30 oil may be used to improve engine starting and reduce wear during initial warm-up periods. For extremely hot environments or heavy-duty applications, 15W-40 oil can provide better protection at higher temperatures.
It’s important to use engine oils that meet or exceed API service categories SJ or higher for gasoline engines. For LPG or natural gas versions of the WG3800, oils specifically formulated for gas engines may be recommended.
The oil capacity of the WG3800 engine is approximately 12.2 liters (3.2 gallons). This capacity includes the oil pan and filter.
Kubota advises changing the oil and filter at regular intervals as specified in the engine’s maintenance schedule. Typically, the first oil change is recommended after the initial 50 hours of operation, with subsequent changes every 200 hours or annually, whichever comes first.
When selecting an oil, consider factors such as the engine’s operating conditions, ambient temperature range, and any specific requirements outlined in the engine’s operation manual. Always consult the engine’s manual for the most accurate and up-to-date information regarding oil specifications and maintenance schedules.
Kubota Wg3800 Oil Capacity
The Kubota WG3800 engine has an oil pan capacity of 12.2 liters (3.2 gallons). This capacity includes both the oil pan and the oil filter. It’s important to note that when changing the oil, the actual amount needed may be slightly less than the full capacity, as some oil remains in the engine components.
Kubota recommends using high-quality engine oil that meets or exceeds API (American Petroleum Institute) service categories SJ or higher for gasoline engines. The recommended oil grade is typically 10W-30 for most operating conditions. However, in colder climates or for cold starts, 5W-30 oil may be used, while in extremely hot environments or for heavy-duty applications, 15W-40 oil can provide better protection.
For LPG or natural gas versions of the WG3800, oils specifically formulated for gas engines may be recommended. Always consult the engine’s operation manual for the most accurate and up-to-date information regarding oil specifications and maintenance schedules.
Regular oil changes are crucial for maintaining the engine’s performance and longevity. Typically, the first oil change is recommended after the initial 50 hours of operation, with subsequent changes every 200 hours or annually, whichever comes first. However, these intervals may vary depending on the specific application and operating conditions of the engine.
Kubota Wg3800 Oil Filter
The Kubota WG3800 engine uses an oil filter with part number HH1C0-32430. This filter is designed specifically for Kubota engines to ensure optimal performance and protection. It replaces older part numbers KU-1C010-32430, KU-1C020-32430 and KU-1C020-32434.
The oil filter for the WG3800 is a cartridge-style filter that helps remove contaminants from the engine oil as it circulates. Regular replacement of this filter is crucial for maintaining engine health and longevity. Kubota recommends changing the oil and filter at intervals specified in the engine’s maintenance schedule, typically after the first 50 hours of operation and then every 200 hours or annually, whichever comes first.
When replacing the oil filter, it’s important to use a genuine Kubota part or an equivalent high-quality filter that meets Kubota’s specifications. This ensures proper fitment and filtration performance. The filter should be installed according to the instructions in the engine manual, making sure it’s tightened to the correct torque specification.
The oil capacity of the WG3800 engine, including the new filter, is approximately 12.2 liters (3.2 gallons). When changing the oil and filter, it’s recommended to use the grade and type of oil specified in the engine manual, typically 10W-30 for most operating conditions.
Kubota Wg3800 Service Manual,
The Kubota WG3800 engine has an operator’s manual available that covers basic operation and maintenance procedures. This manual includes information on:
Servicing the engine
Important emission regulation information
Names and locations of engine parts
Pre-operation checks
Break-in procedures
Daily checks
Starting and stopping the engine
Checks to perform during operation
Maintenance schedules and service intervals
Periodic service procedures for fuel system, engine oil, spark plugs, radiator, air cleaner, and other components
Troubleshooting guide
Engine specifications
The manual provides detailed instructions for routine maintenance tasks like:
Checking and changing engine oil
Replacing the oil filter cartridge
Cleaning and adjusting spark plugs
Checking coolant levels and changing coolant
Inspecting and cleaning the air cleaner elements
Adjusting fan belt tension
Checking fuel lines and electrical wiring
It also covers more in-depth service procedures such as:
Fuel system maintenance for gasoline, LPG, and natural gas versions
Changing the oil separator element
Replacing rubber piping related to the oil separator
Carriage and storage guidelines
The manual includes diagrams of the fuel systems, electrical wiring, and engine components to aid in servicing. Specifications like tightening torques for various engine parts are provided. While this operator’s manual covers basic service information, a more comprehensive service manual with complete repair procedures may be available through authorized Kubota dealers for technicians performing major engine work.