Caterpillar D330B
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar D330B is a legacy 4-cylinder, 4-stroke diesel engine designed for mid-range power in demanding environments. Primarily utilized in marine auxiliary roles and stationary industrial platforms, this series includes configurations for gen-sets and power units. The D330B features a 4-1/2 inch bore design and was part of a lineage that transitioned from the A-series to the C-series engines. It is recognized for its mechanical simplicity and ability to operate reliably in high-moisture or salt-heavy environments.
Across the series, Caterpillar implemented significant changes, such as moving from integrated water pump/fan drives to separate gear-driven pumps seen in later C-series models. The D330B remains a critical component in the used parts and restoration market due to its robust mechanical design and high demand among specialists looking to preserve pre-electronic machinery. Its ability to be serviced without complex electronic control modules makes it a preferred choice for repower projects and historical equipment maintenance.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Caterpillar D330B specifications
Engine
| Model | D330B (Marine configuration identified by serial prefix 9NS) |
| Configuration | Inline 4-cylinder, 4-stroke diesel |
| Net Power | 125 – 160 HP @ 1,800 – 2,000 RPM |
| Displacement | 638 cu in (10.5 L) |
| Bore x Stroke | 4.75 in x 6.0 in (121 mm x 152 mm) |
| Aspiration | Naturally Aspirated or Turbocharged (model dependent) |
| Compression Ratio | ~16:1 (varies by application) |
| Fuel System | Direct Injection, Mechanical Fuel Pump |
| Emissions Tier | Pre-regulation (no emissions aftertreatment) |
Weights
| Dry Weight | Approx. 2,400 – 2,800 lbs (1,090 – 1,270 kg) |
Performance
| Torque Output | Up to 470 lb-ft (638 Nm) |
| Governing Speed Range | 1,200 – 2,000 RPM |
Service capacities (summary)
| Engine Oil Capacity | ~5.5 – 6.5 gallons (21 – 25 liters) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
D330B fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 30.3 L (8.0 US gal) full system; approx. 29.9 L (7.9 US gal) refill at oil-and-filter change | Cat DEO (Diesel Engine Oil). SAE 15W-40 multigrade for general service; step down to SAE 10W-30 in cold climates below roughly -18 C (0 F); straight SAE 30 in sustained heat above 30 C (86 F). Select grade from Cat viscosity-by-ambient-temperature chart at start-up. |
| Cooling system | 45.0 L (11.9 US gal) | Cat DEAC (Diesel Engine Antifreeze/Coolant), full-strength or 50/50 premix with water; Cat ELC (Extended Life Coolant) accepted as a longer-service alternative. Use higher antifreeze concentration in climates colder than about -20 C (-4 F). |
| Fuel tank | 560 L (148 US gal) full; approx. 549 L (145 US gal) service refill | No. 2-D diesel fuel (ASTM D975). Switch to No. 1-D or a winter-blend No. 2-D in cold weather to prevent waxing/gelling. |
| Swing drive | 15.1 L (4.0 US gal) | Cat TDTO (Transmission/Drive Train Oil), meeting Cat TO-4 spec. SAE 30 typical; drop to SAE 10W or a TO-4 multigrade in cold climates. |
| Grease | Cat MPGM (Multipurpose Grease), NLGI 2, for general pin and bushing lubrication. Cat XA (Extreme Application) grease is an alternative for heavy-load swing-bearing and pin service in extreme temperature or duty conditions. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar D330B maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the D330B beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Cat S.O.S Services to monitor engine oil, hydraulic fluid, and coolant. Analyze oil for wear metals like iron or copper and contaminants such as silicon or sodium. For the D330B marine application, frequent hydraulic oil sampling is vital to detect particle counts or water content that could lead to pump failure. Monitoring coolant pH and SCA levels prevents internal liner pitting and corrosion in the engine block.
Corrective & Common Repairs
Address common mechanical issues such as pre-combustion chamber thread discrepancies or head modifications found in certain serial ranges. Monitor for leaks at the water pump or fan drive assemblies. If metal loading is detected in hydraulic oil via analysis, prepare to reseal or rebuild main hydraulic pumps and cylinders. Ensure all engine components, including gaskets and seals, meet original mechanical specifications to prevent compression loss.
Overhaul & Rebuild Points
Plan major overhauls around the inspection of cylinder liners and counterbores. When performing top-end rebuild s, inspect valves, guides, and springs for wear. For complete in-frame rebuild s, utilize high-quality kits containing pistons, liners, rings, and bearings. Focus on verifying the integrity of the 4-1/2 inch bore components and ensuring all timing gear clearances meet factory specifications to maintain engine timing and performance.
Seasonal & Environment Servicing
In marine environments, prioritize inspections for salt-heavy air damage and moisture ingress. For engines operating in dusty or quarry conditions, shorten air filter inspection intervals and clean radiators daily. During cold weather operations, ensure the use of correct viscosity oil and verify engine block heater functionality. Always check coolant glycol concentration before winter to protect the engine block from freezing and cracking.
D330B common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1S-9547 | Transfer | Lubrication service | Check fitment → |
| 7M-7177 | Transfer --Filter Instruction | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
D330B attachments & work tools
Marine Auxiliary & Industrial Work Tools
Includes marine gensets, bilge pump drives, air compressor engines, and water pump engines for flood control. These units are utilized in dockyards, inland waterways, and agricultural sectors.
Construction Attachments (D330B Class)
Standard tool families include blades, rippers/scarifiers, and pull-type rippers. Specific configurations for this class also encompass motor graders, scrapers, and track-type tractors.
Mounting & Hydraulic Systems
Marine and industrial versions are available in naturally aspirated, turbocharged, or turbocharged with aftercooler configurations. Some units utilize a separate gear drive water pump depending on the specific series.
Factory Configurations & Guarding
Engine-specific configurations include 4-cylinder, 4-stroke diesel designs with mechanical fuel control systems. Marine and industrial versions are identified by serial number prefixes such as 56B, 57B, 81B, 82B, 85B, and 86B.
All D330B assemblies by section
Every catalogued assembly group for the Caterpillar D330B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Attachments
5l7686 Air Cleaner Group
| 5L***86 | Air Cleaner Assembly | 1 |
7l7414 Air Filter Indicator Group
| 7L***14 | Air Filter Indicator Group | 1 |
7l6784 Air Filter Indicator Group
| 7L***84 | Air Filter Indicator Group | 1 |
5l2130 Air Filter Indicator Group
| 5L***30 | Air Filter Indicator Group | 1 |
3l517 Air Motor
| 3L***17 | Air Motor | 1 |
5l2233 Air Starting Arrangement
| 3L***79 | Fuel Priming Pump Group | 1 |
| 5L***32 | Air Starting Motor Group | 1 |
| 5L***33 | Air Starting Arrangement | 1 |
5l2231 Air Starting Motor Assembly
| 5L***31 | Air Starting Motor Assembly | 1 |
7l8425 Motor Assembly
| 7L***25 | Air Starting Motor Assembly | 1 |
7l8250 Air Starting Motor Group--Type 2
| 7L***50 | Air Starting Motor Group | 1 |
7l8250 Air Starting Motor Group--Type 1
| 7L***50 | Air Starting Motor Group | 1 |
5l2232 Air Starting Motor Group--15 Horsepower
| 5L***32 | Air Starting Motor Group | 1 |
5l1243 Alternator Assembly--32 Volt, 60 Ampere
| 5L***43 | Alternator As | 1 |
5l6468 Alternator Assembly--24 Volt, 60 Ampere
| 5L***68 | Alternator Assembly | 1 |
4l7805 Alternator Assembly--12 Volt, 60 Ampere
| 4L***05 | Alternator Assembly | 1 |
6l2227 Alternator Group--24 Volt, 60 Ampere
| 6L***27 | Alternator Group | 1 |
5l6223 Alternator Group--32 Volt, 60 Ampere
| 5L***23 | Alternator Group | 1 |
6l2226 Alternator Group--12 Volt, 60 Ampere
| 6L***26 | Alternator Group | 1 |
7l7868 Battery Group--12 Volt, 344 Ampere Hours
| 7L***68 | Battery Group | 1 |
7l7871 Battery Group--24 Volt, 172 Ampere Hours--Replaces 9f6028
| 7L***71 | Battery Group; (24-Volt)(24-Volt) | 1 |
7l7872 Battery Group--24 Volt, 220 Ampere Hours--Replaces 1h1341
| 7L***72 | Battery Group | 1 |
1l5663 Battery Group--30 Volt, 170 Ampere Hours
| 1L***63 | Battery Group | 1 |
7l7873 Battery Group--30 Volt, 120 Ampere Hours
| 7L***73 | Battery Group | 1 |
7l7867 Battery Group--12 Volt, 240 Ampere Hours
| 7L***67 | Battery Group | 1 |
7l7870 Battery Group--24 Volt, 120 Ampere Hours--Replaces 1l5664
| 7L***70 | Battery Group | 1 |
1l5664 Battery Group--24 Volt, 120 Ampere Hours
| 1L***64 | Battery Group | 1 |
1l5662 Battery Group--30 Volt, 120 Ampere Hours
| 1L***62 | Battery Group | 1 |
9f6028 Battery Group--24 Volt, 170 Ampere Hours
| 9F***28 | Battery Group | 1 |
7l7869 Battery Group--12 Volt, 440 Ampere Hours
| 7L***69 | Battery Group | 1 |
1h1341 Battery Group--24 Volt, 200 Ampere Hours
| 1H***41 | Battery Group | 1 |
5l8091 Air Cleaner Cap Group
| 5L***91 | Cap Group-Air Cleaner; Air Cleaner Cap Group | 1 |
8l3915 Centrifugal Pump Assembly--Raw Water
| 8L***15 | Centrifugal Pump Assembly | 1 |
2f8223 Clutch Assembly
| 2F***23 | Clutch As | 1 |
5l5869 Electric Starting Arrangement--12 Volt
| 3L***79 | Fuel Priming Pump Group | 1 |
| 5L***68 | Motor And Wiring Group | 1 |
| 5L***69 | Direct Electric Starting Arrangement | 1 |
6l2101 Dual Instrument Panel Group--12 Volt
| 6L***01 | Dual Panel Group | 1 |
6l2102 Dual Instrument Panel Group--12 Volt
| 6L***02 | Dual Panel Group | 1 |
6l2103 Dual Instrument Panel Group--24 Or 32 Volt
| 6L***03 | Dual Panel Group | 1 |
5l7660 Exhaust Elbow Group--4 Inch Dry
| 5L***60 | Elbow Group; Elbow Gp-Exhaust | 1 |
7l443 Exhaust Elbow Group--90 Degrees Bend--4 Inch
| 7L***43 | Elbow Group-Exhaust | 1 |
5l7661 Exhaust Elbow Group--5 Inch Dry
| 5L***61 | Elbow Group-Exhaust; Exhaust Elbow Group | 1 |
5l4491 Motor And Wiring Group--32 Volt
| 5L***91 | Electric Motor And Wiring Group | 1 |
5l2489 Electric Starting Arrangement--24 Volt
| 3L***79 | Fuel Priming Pump Group | 1 |
| 5L***89 | Electric Starting Arrangement | 1 |
| 5L***90 | Electric Starting Motor Group | 1 |
5l4492 Electric Starting Arrangement--32 Volt
| 3L***79 | Fuel Priming Pump Group | 1 |
| 5L***91 | Electric Motor And Wiring Group | 1 |
| 5L***92 | Electric Starting Arrangement | 1 |
5l5867 Motor--12 Volt--Part 1 Of 2
| 5L***67 | Electric Starting Motor Assembly | 1 |
5l4513 Electric Starting Motor Assembly--32 Volt--Part 2 Of 2
| 5L***13 | Electric Starting Motor Assembly | 1 |
5l5867 Motor--12 Volt--Part 2 Of 2
| 5L***67 | Electric Starting Motor Assembly | 1 |
5l4513 Electric Starting Motor Assembly--32 Volt--Part 1 Of 2
| 5L***13 | Electric Starting Motor Assembly | 1 |
5l2490 Motor And Wiring Group--24 Volt
| 5L***90 | Electric Starting Motor Group | 1 |
8h4681 Primary Fuel Filter Group
| 8H***81 | Filter Group-Primary Fuel; Primary Fuel Filter Group | 1 |
5l9377 Exhaust Fitting Group--5 Inch
| 5L***77 | Fitting Group-Exhaust; Exhaust Flange Group | 1 |
5l8592 Exhaust Flange Group--4 Inch
| 5L***92 | Flange Group-Exhaust | 1 |
3l6641 Flexible Fuel Lines Group
| 3L***41 | Flexible Fuel Lines Group | 1 |
3f4394 Foot Valve And Strainer Assembly
| 3F***94 | Foot Valve & Strainer As | 1 |
3l4837 Front Auxiliary Drive Group--Crankshaft
| 3L***37 | Front Auxiliary Drive Group | 1 |
5l6260 Front Power Take-Off Group--1 : 1 Ratio--Engine Rotation
| 5L***60 | Front Power Take-Off Group | 1 |
3l6579 Fuel Priming Pump Group
| 3L***79 | Fuel Priming Pump Group | 1 |
8l4309 Fuel System Shield Group
| 4L***63 | Nut-Spacer; (3/8-16-Thd) | 1 |
| 6B***33 | Spacer Engine Support To Adjusting Strap | 1 |
| 7L***41 | Shield Assembly | 1 |
5l5750 Generator Assembly--12 Volt, 35 Ampere
| 5L***50 | Generator Assembly | 1 |
5l5751 Generator Assembly--32 Volt, 18 Ampere
| 5L***51 | Generator Assembly | 1 |
5l6221 Generator Group--12 Volt, 35 Ampere
| 5L***21 | Generator Group | 1 |
5l6222 Generator Group--32 Volt, 18 Ampere
| 5L***22 | Generator Group | 1 |
6l6767 Starting Aid Glow Plug Group--12 Volt
| 6L***67 | Glow Plug Group | 1 |
6l6769 Starting Aid Glow Plug Group--32 Volt
| 6L***69 | Glow Plug Group | 1 |
5l2518 Governor Control Group--R.H.--Positive Locking And Remote Cable
| 5L***18 | Governor Control Group | 1 |
7f6899 Governor Control Group--Pilot House Mounted
| 7F***99 | Governor Control Group | 1 |
4l6811 Governor Control Lever Group--Remote Cable
| 4L***11 | Governor Control Lever Group; Governor Control Lever Group Shown Below | 1 |
4l7604 Control Handle Group
| 4L***04 | Handle Group-Control; Governor Control Handle Group | 1 |
6l4073 Heat Exchanger Assembly
| 6L***73 | Heat Exchanger Assembly | 1 |
6l4075 Heat Exchanger Assembly
| 6L***75 | Heat Exchanger Assembly | 1 |
6l3447 Heat Exchanger Assembly
| 6L***47 | Heat Exchanger Assembly | 1 |
7l5473 Heat Exchanger Assembly--Remote Mounted
| 7L***73 | Heat Exchanger Assembly | 1 |
7l5471 Heat Exchanger Assembly--Engine Mounted
| 7L***71 | Heat Exchanger Assembly | 1 |
5l8660 Horizontal Exhaust Fitting Group--4 Inch
| 5L***60 | Horizontal Exhaust Fitting Group | 1 |
4l4612 Instrument Panel Group
| 4L***12 | Instrumental Panel Group | 1 |
6l5947 Jacket Water Aftercooler And Connections Group--Keel Cooling
| 6L***47 | Jacket Water Aftercooler And Connections Group | 1 |
4l4984 Ether Starting Aid Kit
| 4L***84 | Kit-Starting Aid | 1 |
5l5868 Motor And Wiring Group--12 Volt
| 5L***68 | Motor And Wiring Group | 1 |
8l8207 Electric Starting Motor Assembly--32 Volt--Part 2 Of 2--Type 1
| 8L***07 | Motor As-Electric Starting | 1 |
8l8207 Electric Starting Motor Assembly--32 Volt--Part 1 Of 2--Type 1
| 8L***07 | Motor As-Electric Starting | 1 |
8l8207 Electric Starting Motor Assembly--32 Volt--Part 2 Of 2--Type 2
| 8L***07 | Motor As-Electric Starting | 1 |
8l8207 Electric Starting Motor Assembly--32 Volt--Part 1 Of 2--Type 2
| 8L***07 | Motor As-Electric Starting | 1 |
5l2537 Motor Assembly--24 Volt--Part 1 Of 2
| 5L***37 | Motor Assembly | 1 |
5l2537 Motor Assembly--24 Volt--Part 2 Of 2
| 5L***37 | Motor Assembly | 1 |
5l9773 Oil Filler And Oil Level Gauge Group--R.H.
| 5L***73 | Oil Filler Group | 1 |
5l8632 Exhaust Pipe Group--5 Inch
| 5L***32 | Pipe Group-Exhaust | 1 |
5l8649 Exhaust Pipe Group--4 Inch
| 5L***49 | Pipe Group-Exhaust | 1 |
8f2184 Centrifugal Pump Group--R.H.
6l5875 Bilge Water Pump--R.H.
| 6L***75 | Pump As-Bilge; -Rh | 1 |
6l5861 Bilge Pump Drive Group
| 6L***61 | Pump Drive Group | 1 |
6l5858 Bilge Water Pump Group--Small Capacity
| 6L***58 | Pump Group-Water | 1 |
6l5397 Regulator Assembly--32 Volt, 60 Ampere
| 6L***97 | Regulator As | 1 |
5l7690 Regulator Assembly--32 Volt, 18 Ampere
| 5L***90 | Regulator Assembly | 1 |
6l5657 Regulator Assembly--24 Volt, 60 Ampere
| 6L***57 | Regulator Assembly | 1 |
5l9879 Safety Contactor Group--Oil Pressure And Water Temperature
| 5L***79 | Safety Contactor Group | 1 |
6l2691 Stub Shaft Group--Front--Power Take-Off
| 6L***91 | Shaft Group-Stub | 1 |
5l7428 Single Instrument Panel Group--24 Or 32 Volt
| 5L***28 | Single Panel Group | 1 |
5l9892 Single Instrument Panel Group--12 Volt
| 5L***92 | Single Panel Group | 1 |
5l7429 Single Instrument Panel Group--12 Volt
| 5L***29 | Single Panel Group | 1 |
6l1923 Solenoid Shut-Off Group--12 Volt
| 6L***23 | Solenoid Shut-Off Group | 1 |
5l8984 Solenoid Shut-Off Group--24 Volt
| 5L***84 | Solenoid Shut-Off Group | 1 |
6l6768 Starting Aid Glow Plug Group--24 Volt
| 6L***68 | Starting Aid Glow Plug Group | 1 |
6l7868 Starting Aid Glow Plug Group--24 Volt
| 6L***68 | Starting Aid Glow Plug Group | 1 |
6l7867 Starting Aid Glow Plug Group--12 Volt
| 6L***67 | Starting Aid Glow Plug Group | 1 |
6l7869 Starting Aid Glow Plug Group--32 Volt
| 6L***69 | Starting Aid Glow Plug Group | 1 |
8f4185 Foot Valve And Strainer Assembly
| 8F***85 | Strainer As; Foot Valve And Strainer Assembly | 1 |
4m1812 Solenoid Switch Assembly
| 4M***12 | Switch As-Solenoid | 1 |
5l8735 Solenoid Switch Assembly--12 Volt
| 5L***35 | Switch As-Solenoid | 1 |
6l5118 Tachometer Drive Group
| 6L***18 | Tachometer Drive Group | 1 |
4l8393 Tachometer Drive Group
| 4L***93 | Tachometer Drive Group | 1 |
Tachometers
1l5010 Air Receiver Group--10.5 Cubic Foot Capacity
| 1L***10 | Tank Group-Air | 1 |
1l5011 Regulating And Pressure Reducing Valve Group
| 1L***11 | Valve Group-Starting Air | 1 |
6l3093 Vertical Exhaust Fitting Group--5 Inch
| 6L***93 | Vertical Exhaust Fitting Group | 1 |
5l8602 Vertical Exhaust Fitting Group--4 Inch
| 5L***02 | Vertical Exhaust Fitting Group | 1 |
6l5857 Bilge Water Pump Group--Large Capacity
| 6L***57 | Water Pump Group | 1 |
3l9921 Whistle Valve
| 3L***21 | Whistle Valve Assembly | 1 |
Diesel Engine
Accessory Drive
Air Cleaner (5l7873 N/S)--Dry Type
| 5L***73 | Air Cleaner | 1 |
6l7119 Basic Governor Group--End View--Part 1 Of 2
| 6L***19 | Basic Governor Group | 1 |
6l7119 Basic Governor Group--Side View--Part 2 Of 2
| 6L***19 | Basic Governor Group | 1 |
Camshaft
Connecting Rod And Piston (9l2368 N/S)--4 Required
| 9L***68 | Connecting Rod And Piston | 1 |
Connecting Rod And Piston--4 Required
Crankshaft
Crankshaft Bearing Replacement Groups
2s9004 Cylinder Head Assembly
| 2S***04 | Cyl Head A | 1 |
Cylinder Block And Covers--End View--Part 2 Of 2
Cylinder Block And Covers--Side View--Part 1 Of 2
5s4120 Cylinder Block Assembly
| 5S***20 | Cylinder Block Assembly | 1 |
6l6216 Cylinder Block Assembly
| 6L***16 | Cylinder Block Assembly | 1 |
Cylinder Head And Valve Mechanism--End View--Part 2 Of 2
Cylinder Head And Valve Mechanism--Side View--Part 1 Of 2
Engine Balancer (6l3465 N/S)
| 6L***65 | Engine Balancer | 1 |
Flywheel
Fuel Filter
2s8767 Fuel Injection Pump Group
| 2S***67 | Fuel Injection Pump Group | 1 |
Fuel Injection Valves And Lines
Fuel Pump Housing And Governor (7l3354 N/S)
| 7L***54 | Fuel Pump Housing And Governor | 1 |
6l1798 Fuel Pump Housing And Governor Group
| 6L***98 | Fuel Pump Housing And Governor Group | 1 |
5s5088 Fuel Pump Housing Group
| 5S***88 | Fuel Pump Housing Group | 1 |
5s4164 Fuel Pump Housing Group
| 5S***64 | Fuel Pump Housing Group | 1 |
9m6041 Fuel Injection Pump Group
| 9M***41 | Fuel Pump Housing Group | 1 |
Fuel Ratio Control
6l3347 Fuel Transfer Pump Assembly
| 6L***47 | Fuel Transfer Pump Assembly | 1 |
7l5732 Fuel Transfer Pump Group
| 7L***32 | Fuel Transfer Pump Group | 1 |
Gasket Kits
6l1557 Basic Governor Group--End View--Part 1 Of 2
| 6L***57 | Governor Group | 1 |
7l5444 Governor Group--Side View--Part 2 Of 2
| 7L***44 | Governor Group | 1 |
6l1557 Basic Governor Group--Side View--Part 2 Of 2
| 6L***57 | Governor Group | 1 |
7l5444 Governor Group--End View--Part 1 Of 2
| 7L***44 | Governor Group | 1 |
7l5471 Heat Exchanger Assembly
| 7L***71 | Heat Exchanger Assembly | 1 |
6l3445 Heat Exchanger Assembly
| 6L***45 | Heat Exchanger Assembly | 1 |
Marine Gear Oil Cooler (6l5175 N/S)
| 6L***75 | Marine Gear Oil Cooler | 1 |
Oil Cooler
Oil Filter
Oil Pump
6l3473 Oil Pump Assembly
| 6L***73 | Oil Pump Assembly | 1 |
Raw Water Aftercooler
Raw Water Pump, Heat Exchanger And Connections--Part 2 Of 2
Raw Water Pump, Heat Exchanger And Connections--Part 1 Of 2
Service Meter (3l5665 N/S)
| 3L***65 | Service Meter | 1 |
Surge Tank And Water Lines
Turbocharger And Mounting
4s9705 Turbocharger Assembly
| 4S***05 | Turbocharger Assembly | 1 |
3s4005 Turbocharger Assembly--Type 2
| 3S***05 | Turbocharger Assembly | 1 |
3s4005 Turbocharger Assembly--Type 1
| 3S***05 | Turbocharger Assembly | 1 |
Water Cooled Exhaust Manifold
6l2750 Water Cooled Exhaust Manifold Group
| 6L***50 | Water Cooled Exhaust Manifold Group | 1 |
5l7804 Exhaust Pipe Group
| 5L***04 | Water Cooled Exhaust Pipe Group | 1 |
5l6042 Water Pump Assembly
| 5L***42 | Water Pump Assembly | 1 |
6l7409 Water Pump Assembly
| 6L***09 | Water Pump Assembly | 1 |
Water Shielded Manifold
Marine Gears
5l1629 Clutch Assembly
| 5L***29 | Clutch Assembly | 1 |
4l8440 Clutch Assembly
| 4L***40 | Clutch Assembly | 1 |
6l8381 Marine Gear Assembly--Side View--Part 1 Of 3--Type 3
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--End View--Part 3 Of 3--Type 2
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--Side View--Part 2 Of 3--Type 1
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--End View--Part 3 Of 3--Type 3
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--Side View--Part 2 Of 3--Type 3
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--Side View--Part 2 Of 3--Type 2
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--Side View--Part 1 Of 3--Type 1
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--Side View--Part 1 Of 3--Type 2
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
6l8381 Marine Gear Assembly--End View--Part 3 Of 3--Type 1
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
8f9866 Grease Gun--Type 2
| 8F***66 | Grease Gun As | 1 |
8f9866 Grease Gun--Type 1
| 8F***66 | Grease Gun As | 1 |
5l8419 Housing Assembly--3 : 1 Ratio
| 5L***19 | Housing Assembly | 1 |
5l8418 Housing Assembly--2 : 1 Ratio--Type 2
| 5L***18 | Housing Assembly | 1 |
5l8417 Housing Assembly--1.5 : 1 Ratio
| 5L***17 | Housing Assembly | 1 |
5l8418 Housing Assembly--2 : 1 Ratio--Type 1
| 5L***18 | Housing Assembly | 1 |
Marine Controls
| 5L***91 | Twin "S" Control --Pilot House; Twin "S" Control-- Pilot House | 1 |
| 5L***16 | Cable-16 Foot | 0 |
| 5L***17 | Cable-14 Foot | 0 |
6l8374 Marine Gear Arrangement--2.91 : 1 Ratio
| 6L***74 | Marine Gear Arrangement | 1 |
| 6L***79 | Marine Gear Assembly | 1 |
| 6L***82 | Mounting Group | 1 |
6l8375 Marine Gear Arrangement--3.8 : 1 Ratio
| 6L***75 | Marine Gear Arrangement | 1 |
| 6L***80 | Marine Gear Assembly | 1 |
| 6L***83 | Mounting Group-Gear; Mounting Group | 1 |
6l8376 Marine Gear Arrangement--4.48 : 1 Ratio
| 6L***76 | Marine Gear Arrangement | 1 |
| 6L***81 | Gear As-Marine; Marine Gear Assembly | 1 |
| 6L***83 | Mounting Group-Gear; Mounting Group | 1 |
6l8373 Marine Gear Arrangement--1.93 : 1 Ratio
| 6L***73 | Marine Gear Arrangement | 1 |
| 6L***78 | Marine Gear Assembly | 1 |
| 6L***82 | Mounting Group | 1 |
6l8372 Marine Gear Arrangement--1.47 : 1 Ratio
| 6L***72 | Marine Gear Arrangement | 1 |
| 6L***77 | Marine Gear Assembly | 1 |
| 6L***82 | Mounting Group | 1 |
6l8377 Marine Gear Assembly--Side View--Part 1 Of 3--Type 1
| 6L***77 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--End View--Part 3 Of 3--Type 1
| 6L***79 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 2 Of 3--Type 3
| 6L***78 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 2 Of 3--Type 1
| 6L***79 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 2 Of 3--Type 4
| 6L***78 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--End View--Part 3 Of 3--Type 3
| 6L***77 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 1 Of 3--Type 1
| 6L***78 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--End View--Part 3 Of 3--Type 3
| 6L***79 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 1 Of 3--Type 3
| 6L***78 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--End View--Part 3 Of 3--Type 2
| 6L***78 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--Side View--Part 1 Of 3--Type 3
| 6L***80 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--End View--Part 3 Of 3--Type 2
| 6L***79 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 1 Of 3--Type 3
| 6L***79 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--End View--Part 3 Of 3--Type 1
| 6L***78 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 1 Of 3--Type 4
| 6L***77 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 2 Of 3--Type 4
| 6L***77 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--End View--Part 3 Of 3--Type 3
| 6L***78 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--End View--Part 3 Of 3--Type 3
| 6L***80 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--End View--Part 3 Of 3--Type 4
| 6L***79 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--Side View--Part 2 Of 3--Type 3
| 6L***80 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 2 Of 3--Type 2
| 6L***79 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 2 Of 3--Type 2
| 6L***78 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 1 Of 3--Type 4
| 6L***79 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--End View--Part 3 Of 3--Type 1
| 6L***77 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 2 Of 3--Type 4
| 6L***79 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 1 Of 3--Type 4
| 6L***78 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--End View--Part 3 Of 3--Type 4
| 6L***77 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--Side View--Part 1 Of 3--Type 1
| 6L***80 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 1 Of 3--Type 1
| 6L***79 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 1 Of 3--Type 3
| 6L***77 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 2 Of 3--Type 1
| 6L***77 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--End View--Part 3 Of 3--Type 2
| 6L***80 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--Side View--Part 2 Of 3--Type 1
| 6L***80 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 2 Of 3--Type 3
| 6L***77 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 2 Of 3--Type 3
| 6L***79 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--Side View--Part 1 Of 3--Type 2
| 6L***80 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--End View--Part 3 Of 3--Type 4
| 6L***78 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--Side View--Part 2 Of 3--Type 2
| 6L***80 | Marine Gear Assembly | 1 |
6l8380 Marine Gear Assembly--End View--Part 3 Of 3--Type 1
| 6L***80 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--End View--Part 3 Of 3--Type 2
| 6L***77 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 2 Of 3--Type 2
| 6L***77 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 2 Of 3--Type 1
| 6L***78 | Marine Gear Assembly | 1 |
6l8379 Marine Gear Assembly--Side View--Part 1 Of 3--Type 2
| 6L***79 | Marine Gear Assembly | 1 |
6l8377 Marine Gear Assembly--Side View--Part 1 Of 3--Type 2
| 6L***77 | Marine Gear Assembly | 1 |
6l8378 Marine Gear Assembly--Side View--Part 1 Of 3--Type 2
| 6L***78 | Marine Gear Assembly | 1 |
5l8425 Marine Gear Group--3 : 1 Ratio--10,700 Series
| 5L***25 | Marine Gear Group | 1 |
5l8423 Marine Gear Group--1.5 : 1 Ratio--10,200 Series
| 5L***23 | Marine Gear Group | 1 |
5l8424 Marine Gear Group--2 : 1 Ratio--10,200 Series
| 5L***24 | Marine Gear Group | 1 |
5l9187 Marine Gear Group--2 : 1 Ratio--10,200 Series
| 5L***87 | Marine Gear Group | 1 |
5l9186 Marine Gear Group--1.5 : 1 Ratio--10,200 Series
| 5L***86 | Marine Gear Group | 1 |
5l9191 Marine Gear Group--4 : 1 Ratio--10,700 Series
| 5L***91 | Marine Gear Group | 1 |
5l3810 Housing Assembly--4 : 1 Ratio
| 5L***10 | Marine Gear Housing Assembly | 1 |
5l4661 Housing Assembly--1.5 : 1 Ratio
| 5L***61 | Marine Gear Housing Assembly | 1 |
5l4561 Housing Assembly--2 : 1 Ratio
| 5L***61 | Marine Gear Housing Assembly | 1 |
6l7024 Marine Gear Oil Lines Group
| 6L***24 | Marine Gear Oil Lines Group | 1 |
4l8207 Mounting And Support Group--3 : 1 And 4 : 1 Ratio
| 4L***07 | Mounting And Support Group | 1 |
4l8208 Mounting And Support Group--1.5 : 1 And 2 : 1 Ratio
| 4L***08 | Mounting And Support Group | 1 |
6l8382 Mounting Group
| 6L***82 | Mounting Group | 1 |
6l8383 Mounting Group
| 6L***83 | Mounting Group-Gear; Mounting Group | 1 |
Name Plates And Transfers
| 1H***40 | Transfer; Safety On Dash Or Guards When Used | 1 |
| 1S***80 | Film-Crankcase Oil Filler; On Crankcase Oil Filler Cap | 1 |
| 1S***47 | Transfer; Crankcase Instructions On Oil Filter Or Open Space Near Oil Filter | 1 |
4l7306 Pump Assembly
| 4L***06 | Pump Assembly | 1 |
6l9797 Selector Valve Assembly
| 6L***97 | Selector Valve Assembly | 1 |
4l1560 Tool Group
| 4L***60 | Tool Group | 1 |
7l2927 Selector Valve Assembly
| 7L***27 | Valve As-Selector; -Transmission | 1 |
4l7018 Valve Assembly
| 4L***18 | Valve Assembly | 1 |
6l6729 Valve Assembly
| 6L***29 | Valve Assembly | 1 |
D330B serial number reference
The PIN plate is located on the machine. The prefix consists of the first three alphanumeric characters of the serial number.
| Prefix | Identifies | Notes |
|---|---|---|
| 56B | Industrial, Gen set, or Marine | Includes 56B1 and up; refers to industrial, generator set, marine, or automotive configurations. |
| 57B | Industrial, Gen set, or Marine | Includes 57B1 and up; refers to industrial, generator set, marine, or automotive configurations. |
| 81B | Industrial, Gen set, or Marine | Includes 81B1 and up; refers to industrial, generator set, marine, or automotive configurations. |
| 82B | Industrial, Gen set, or Marine | Includes 82B1 and up; refers to industrial, generator set, marine, or automotive configurations. |
| 85B | Industrial, Gen set, or Marine | Includes 85B1 and up; refers to industrial, generator set, marine, or automotive configurations. |
| 86B | Industrial, Gen set, or Marine | Includes 86B00001-UP; refers to industrial, generator set, marine, or automotive configurations. |
Frequently asked questions
What are the core engine specifications for the D330B?
The D330B is a 4-cylinder, 4-stroke diesel engine featuring a 4-1/2 inch bore. It was designed for reliable, mid-range output in industrial and marine applications.
What is the typical operating environment for this engine?
The D330B is engineered for ruggedness in high-moisture, salt-heavy air, or dusty environments, making it suitable for dockyards, inland waterways, and agricultural sectors.
What replaced the D330 series?
The D330 series was succeeded by the D330C engine, which introduced a larger 4-3/4 inch bore and a separate gear-driven water pump.
What D330B owners discuss
What are the primary differences between D330 engine series generations?
How does engine configuration affect cold-start performance in the 330B?
What are common electrical causes for dashboard warning lights or gauge failures?
What hydraulic maintenance is required if metal particles appear in the oil?
What undercarriage inspections are critical during routine service?
What should be checked when purchasing a used D330B excavator?
What is a known issue regarding cylinder liner installation in D330 engines?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Need a specific D330B part?
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