Caterpillarwork toolshear-demolition/scrap

Caterpillar S365B

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar 365B is a large crawler excavator manufactured from 2000 to 2007. It weighs approximately 67.63 tons (149,000 lbs) and is powered by a Caterpillar C15 ACERT engine producing 302 kW (404 hp). The machine features an Advanced Diesel Engine Module (ADEM II) controller and electronically controlled unit injectors (EUI). Configurations include standard and long reach booms, various undercarriage widths, and specialized work tools such as demolition shears and scrap grapples. The 365B succeeded the 365A series and was replaced by the 365C series.

The 365B introduced ADEM II electronic control and EUI fuel systems, replacing the mechanical injection of its predecessor. This shift improved fuel efficiency and emissions compliance while increasing maintenance complexity. In the used market, the 365B remains relevant due to its robust C15 engine durability and widespread parts availability. Its transition to electronic controls makes fluid analysis and electrical system diagnostics critical for valuation and longevity.

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 S365B specifications

Engine

ModelCat 3196 ATAAC
Net Flywheel Power287 kW (385 hp)
Displacement12 l (732.28 in³)
Cylinders6
Emissions TierEPA Tier 2

Weights

Operating Weight - Standard Undercarriage67630 kg (the OEM part reference lb)
Operating Weight (Variants)67630 kg (67.63 tons) to 68000 kg (68 tons) varies by configuration/series

Dimensions

Transport Length13.3 m (43 ft 7 in)
Transport Width3.4 m to 3.5 m (11 ft 2 in to 11 ft 6 in) varies by configuration/series
Transport Height4.37 m to 5.02 m (14 ft 4 in to 16 ft 6 in) varies by configuration/series
Track Gauge600 mm to 650 mm varies by configuration/series

Performance

Maximum Travel Speed4.1 km/h (2.6 mile/h)
Maximum Reach - Ground Level14.04 m (46.1 ft)
Maximum Digging Depth9.47 m (31.1 ft)
Bucket Digging Force383 kN (86100 lb)
Stick Digging Force290 kN (65200 lb)
Tear-out Force261 kN
Maximum Drawbar Pull - Standard Undercarriage461.58 kN (the OEM part reference.29 lb)

Service capacities (summary)

Fuel Tank Capacity800 l (211 gal US)
Hydraulic System - Including Tank670 l (177 gal US)
Hydraulic Tank310 l (81.89 gal US)
Engine Oil54 l (14.27 gal US)
Cooling System95 l (25.1 gal US)
Swing Drive - Each24 l (6.34 gal US)
Final Drive - Each15 l (3.96 gal US)

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

Caterpillar S365B maintenance schedule

Service intervalTasks
Every 10 h
  • Check engine oil level.
  • Check hydraulic fluid level.
  • Check coolant level.
  • Drain water from fuel separator.
  • Inspect air filter restriction indicator.
  • Check for fluid leaks under machine.
Every 250 h
  • Change engine oil and filter.
  • Grease boom, stick, bucket, and swing pivot points.
  • Check hydraulic oil level.
  • Inspect track tension and shoe condition.
  • Check belts and hoses for wear.
  • Inspect radiator and oil cooler fins for debris.
Every 500 h
  • Replace fuel filter.
  • Replace hydraulic return filter.
  • Test coolant with SCA.
  • Inspect undercarriage wear.
  • Check battery terminals and load.
  • Inspect hydraulic hoses for cracks or abrasion.
Every 1,000 h
  • Change hydraulic oil.
  • Change final drive oil.
  • Change swing drive oil.
  • Perform S.O.S fluid analysis on engine, hydraulics, and coolant.
  • Measure undercarriage components.
  • Inspect structural welds on boom and stick.
Every 2,000 h
  • Flush and replace coolant.
  • Replace air filter primary element.
  • Inspect turbocharger.
  • Torque ROPS bolts.
  • Perform comprehensive structural inspection.
  • Evaluate major components for wear.

Servicing the S365B beyond the schedule

Predictive Maintenance & Fluid Analysis

Perform S.O.S fluid analysis at 1,000-hour intervals to monitor engine wear metals, hydraulic contamination, and coolant condition. Use Cat DEO-ULS engine oil and Cat HYDO Advanced hydraulic fluid to maximize drain intervals. Check coolant SCA levels every 500 hours to prevent liner pitting. Analyze hydraulic oil particle counts to detect pump or valve wear before failure. Track coolant pH and glycol content to ensure corrosion protection. Early detection of silicon or sodium in engine oil indicates air filter or head gasket issues.

Corrective & Common Repairs

Replace fuel filters every 500 hours to protect EUI injectors from contamination. Inspect hydraulic return filters at 500 hours to prevent valve clogging. Check track tension daily to reduce undercarriage wear and improve fuel efficiency. Replace worn side cutters and sidebar protectors to maintain bucket integrity. Inspect swing drive oil for copper wear metals indicating bushing failure. Address hydraulic hose abrasion immediately to prevent high-pressure leaks. Verify electronic joystick calibration for precise control response.

Overhaul & Rebuild Points

Inspect final drive and swing drive oil at 1,000 hours for gear wear. Replace hydraulic oil at 1,000 hours to maintain system cleanliness. Flush coolant system at 2,000 hours to remove sediment and restore heat transfer. Evaluate undercarriage components at 1,000 hours to plan replacement before sprocket or idator damage. Inspect turbocharger blades for erosion or oil coking. Check structural welds on boom and stick for fatigue cracks. Plan engine overhaul based on S.O.S analysis trends and compression test results.

Seasonal & Environment Servicing

In dusty environments, check air filter restriction daily and replace elements more frequently. Clean radiator and oil cooler fins daily to prevent overheating. Use Cat Arctic Platinum grease in cold weather for proper lubrication. Monitor coolant concentration to prevent freezing in winter conditions. Check battery fluid levels and charge status in extreme temperatures. Inspect hydraulic hoses for brittleness in cold weather. Adjust track tension for soft ground conditions to improve flotation and reduce sinkage.

S365B fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
E360Engine Coolant Temperature — HighLow coolant level, failed thermostat, water pump issue, or blocked radiator.Diagnose cooling system; do not operate until resolved.
E361Engine Coolant Temperature — Very High (Shutdown)Severe cooling system failure.Engine shutdown required; perform full cooling system diagnosis.
110-0Engine Coolant Temp — Above NormalLow coolant level, thermostat failure.Inspect cooling system, refill coolant, test thermostat.
110-3Engine Coolant Temp Sensor — Voltage HighOpen circuit, sensor failure.Check wiring; replace sensor if confirmed faulty.
174-3Engine Fuel Temperature — Voltage Above NormalOpen circuit in sensor wiring.Inspect harness and replace sensor if necessary.
190-8Engine Speed — Abnormal FrequencySpeed sensor air gap, sensor failure, tone ring damage.Check sensor gap; test speed sensor and tone ring.
41-38-Volt DC Supply — Voltage Above NormalShort to power on 8V reference circuit.Inspect sensors sharing the 8V supply and isolate fault.
41-48-Volt DC Supply — Voltage Below NormalShort to ground on 8V reference circuit.Disconnect sensors one at a time to locate short.
2348-9SAE J1939 Data Link #2 — Abnormal Update RateCAN bus wiring damage, termination fault.Check CAN wiring and measure termination resistance.
2458-2DPF #1 Differential Pressure — ErraticPlugged pressure ports, failing sensor.Clean pressure ports; test sensor; verify DPF soot load.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

S365B attachments & work tools

Buckets - Excavator

General Purpose, Light Material, Multi-Purpose, and Side Dump buckets are available for Cat compact machines, built to Caterpillar specifications. For the 365B class, buckets are selected based on material density and application requirements, with actual weights and ground pressures depending on the final machine configuration.

Couplers - Excavator

Caterpillar quick couplers are the high-performance option for Cat Excavators, allowing one person to change work tools in seconds for maximum flexibility. These couplers enable rapid exchange of material handling arms, forks, and a wide array of buckets from the cab or ground.

Hammers

The Cat hammer line provides productive and cost-effective demolition, tunneling, and excavation power. Hammer sizes are available to fit Compact Track Loaders, Skid Steers, and all sizes of Excavators, including the 365B class, to meet demolition and production breaking needs.

Grapples

Cat Grapples replace the bucket on Cat Excavators, converting them for handling loose material, sorting trash, and demolition site cleanup. An array of styles and sizes are available to match Excavators to the task at hand, with open and close functions controlled by the first auxiliary function.

Tilt Rotate Systems

Cat Tilt Rotate Systems are integrated into the excavator to allow tilting and rotating to reach at any angle without repositioning the machine. A full line of retrofit kits for older excavators and multiple coupler configurations are available to enhance operation versatility.

Augers

Cat Augers are designed for post-hole applications such as fencing, footings, sign posts, and planting trees in construction, agricultural, and landscaping jobs. They are equipped to the full line of compact equipment with the right amount of speed and torque for various soil types.

Forks

Cat Forks are ideal for transporting palletized items and piercing materials like debris. Pallet forks are designed for speed, while utility forks handle waste, and they are available for Compact Track Loaders, Skid Steer Loaders, and Compact Wheel Loaders.

Brooms

Cat Hydraulic Brooms handle ground-clearing jobs with options for hydraulic angling, pick-up, and water systems. Configurations include Pickup Brooms for depositing material into a hopper, Utility Brooms for light debris, and Angle Brooms for windrowing loose material.

Snow Removal Tools

Cat Snow Products include Snow Blowers with throw distances up to 45 feet, Plows for efficient snow movement, and Snow Wings with independently controlled wings. Straight Snow Pushes are also available to remove snow while minimizing passes and salt buildup.

Cold Planers

Cat Cold Planers for Skid Steer Loaders, Compact Track Loaders, and Compact Wheel Loaders are designed for small paving jobs in residential and commercial applications. They are used to restore asphalt and concrete surfaces, remove traffic lane stripes, and mill imperfections prior to resurfacing.

Hydraulic Fluids

Cat HYDO Advanced Oils protect hydraulic components and ensure maximum efficiency with extended drain intervals. For applications requiring fire-resistant fluids, Caterpillar recommends specific biodegradable hydraulic oils formulated for high performance.

All S365B assemblies by section

Every catalogued assembly group for the Caterpillar S365B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body
325-6440 Housing Gp-Shear
14***16Connector Group2
14***51Elbow Group1
16***54Seal1
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317-6006 Housing Gp-Shear
14***06Bolt-Socket Head; (M20x2.5x140-mm)5
20***25Valve Group-Speed Control1
24***97Cylinder & Lines Group-Shear1
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226-0714 Housing Gp-Shear
14***16Connector Group1
18***03Hose As1
19***85Hose As1
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240-5915 Housing Gp-Shear
14***16Connector Group1
16***24Hose As1
17***64Hose As1
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318-6212 Housing Gp-Shear
14***16Connector Group2
14***51Elbow Group1
16***54Seal1
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327-5370 Housing Gp-Shear
14***16Connector Group2
14***51Elbow Group1
16***54Seal1
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310-2108 Housing Gp-Shear
14***06Bolt-Socket Head; (M20x2.5x140-mm)5
20***25Valve Group-Speed Control1
22***13Cylinder & Lines Group-Shear1
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Hydraulic System
228-8613 Cylinder & Lines Gp-Shear
14***06Bolt-Socket Head; (M20x2.5x140-mm)5
20***25Valve Group-Speed Control1
22***13Cylinder & Lines Group-Shear1
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240-5497 Cylinder & Lines Gp-Shear
14***06Bolt-Socket Head; (M20x2.5x140-mm)5
20***25Valve Group-Speed Control1
24***97Cylinder & Lines Group-Shear1
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321-3765 Cylinder & Lines Gp-Shear
09***48Nipple, Grease1
09***06Bolt-Socket Head; (M16x2x80-mm)24
16***71Bushing2
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318-0062 Cylinder & Lines Gp-Shear
14***16Connector Group1
18***15Hose As1
18***16Hose As1
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317-8054 Cylinder & Valve Gp
16***16Seal1
17***23Plug As4
17***23Bushing2
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227-3768 Cylinder & Valve Gp
16***16Seal1
17***21Adapter As1
1P***05Seal (Check Valve Outlet)2
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317-5991 Cylinder & Valve Gp
16***16Seal1
17***21Adapter As1
1P***05Seal (Check Valve Outlet)2
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318-0061 Cylinder & Valve Gp
16***54Seal1
17***82Bolt-Socket Head; (M24x3x150-mm)29
20***98Lock1
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327-5371 Cylinder & Valve Gp
09***48Nipple, Grease1
16***87Bushing2
17***50Pin-Spring1
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321-2531 Cylinder & Valve Gp
09***48Nipple, Grease1
14***84Bolt-Socket Head; (M20x2.5x110-mm)22
16***55Bushing2
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240-5496 Cylinder & Valve Gp
16***16Seal1
17***23Plug As4
17***23Bushing2
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321-2534 Cylinder Gp-Hydraulic
1P***04Seal - Rectangular (45mm Dia)2
1P***67Flange-Half (43.31 mm Id)4
21***02Hose As2
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317-5993 Cylinder Gp-Hydraulic
14***45Connector As2
20***74Fitting Group-Hydraulic; (Quick Disconnect, Female)2
2M***80Seal--To Connector Pump Outlet1
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321-2532 Cylinder Gp-Hydraulic
1P***04Seal - Rectangular (45mm Dia)2
1P***67Flange-Half (43.31 mm Id)4
21***27Hose As2
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327-5372 Cylinder Gp-Hydraulic
13***38Hose As.2
1P***04Seal - Rectangular (45mm Dia)2
1P***67Flange-Half (43.31 mm Id)4
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317-5992 Cylinder Gp-Hydraulic
16***54Seal1
17***82Bolt-Socket Head; (M24x3x150-mm)29
20***98Lock1
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317-6404 Cylinder Gp-Shear
25***45Hose As2
31***04Cylinder Group-Shear1
3K***60Seal Pilot Manifold On; Seal To Boom Check Valve Drain2
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227-4144 Cylinder Gp-Shear
10***16Hose As2
1P***04Seal - Rectangular (45mm Dia)4
1P***67Flange-Half (43.31 mm Id)4
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327-5373 Cylinder Gp-Shear
09***70Bolt-Socket Hd; (M12 X 1.75 X 45)16
1P***04Seal - Rectangular (45mm Dia)4
1P***67Flange-Half (43.31 mm Id)8
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317-6403 Cylinder Gp-Shear
1P***04Seal - Rectangular (45mm Dia)2
1P***67Flange-Half (43.31 mm Id)4
23***81Hose As2
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240-5484 Cylinder Gp-Shear
16***46Bar-Clamp2
16***90Clip; (Slot)2
16***91Clip; (Tab)2
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270-7425 Fitting Gp-Hydraulic
1P***05Seal (Check Valve Outlet)4
20***08Hose As2
25***89Hose As1
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221-0855 Lines Gp-Connecting
22***55Lines Group-Connecting1
27***24Lines Group-Connecting1
27***25Lines Group-Connecting1
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270-4348 Lines Gp-Connecting
17***73Motor Group-Gerotor1
17***76Ring-Mounting1
17***77Gear-Drive; (15-Teeth)1
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273-7602 Lines Gp-Connecting
08***72Seal-O-Ring1
14***28Connector Assem.2
14***35Connect Group; (Each Includes)4
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244-6796 Lines Gp-Connecting
1P***04Seal - Rectangular (45mm Dia)3
1P***05Seal (Check Valve Outlet)1
1P***67Flange-Half (43.31 mm Id)2
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270-3924 Lines Gp-Connecting
1P***04Seal - Rectangular (45mm Dia)2
1P***05Seal (Check Valve Outlet)2
27***24Lines Group-Connecting1
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221-0857 Lines Gp-Connecting
14***45Connector As2
22***57Lines Group-Connecting1
24***08Hose As2
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270-4347 Lines Gp-Connecting
17***21Kit-Housing1
17***22Shaft-Output1
17***25Key-Square1
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302-8171 Lines Gp-Connecting
14***09Plug As-Sto2
17***42Rotor1
17***43Ring1
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239-9251 Lines Gp-Connecting
14***68Hose As2
14***45Connector As2
23***51Lines Group-Connecting1
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273-9212 Lines Gp-Connecting
16***43Seal1
17***57Plug As4
17***14Stator1
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270-7586 Lines Gp-Connecting
08***72Seal-O-Ring1
14***28Connector Assem.2
14***35Connect Group; (Each Includes)4
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258-9890 Lines Gp-Connecting
1P***04Seal - Rectangular (45mm Dia)1
1P***05Seal (Check Valve Outlet)3
1P***67Flange-Half (43.31 mm Id)2
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270-3925 Lines Gp-Connecting
14***20Bolt-Socket Head; (M6x1x75-mm)4
27***25Lines Group-Connecting1
7Y***19Seal-O-Ring (Id=12.37mm)2
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270-3926 Lines Gp-Connecting
14***20Bolt-Socket Head; (M6x1x75-mm)4
17***73Motor Group-Gerotor1
17***77Gear-Drive; (15-Teeth)1
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270-7585 Lines Gp-Connecting
09***73Bolt; (Socket Head) (M12x1.75x60mm)16
12***28Adaptor - Includes:-4
12***24Seal-O-Ring; (12.37mm Id)4
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211-9059 Lines Gp-Connecting
14***59Hose As2
21***59Lines Group-Connecting1
5P***77Flange-Half4
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239-9252 Lines Gp-Connecting
23***52Lines Group-Connecting1
24***96Lines Group-Connecting1
27***85Lines Group-Connecting1
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221-0856 Lines Gp-Connecting
21***73Hose As2
22***56Lines Group-Connecting1
5P***77Flange-Half4
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239-9250 Lines Gp-Connecting
23***50Lines Group-Connecting1
27***47Lines Group-Connecting1
27***48Lines Group-Connecting1
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216-1733 Lines Gp-Connecting
14***68Hose As2
14***45Connector As2
21***33Lines Group-Connecting1
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270-4349 Lines Gp-Connecting
09***73Bolt; (Socket Head) (M12x1.75x60mm)8
12***28Adaptor - Includes:-4
12***24Seal-O-Ring; (12.37mm Id)4
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341-2542 Lines Gp-Connecting
13***54Plug As3
20***87Slack Adjuster Group1
20***88Valve Group-Control1
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170-2174 Manifold Gp-Control
17***74Manifold Group-Control1
17***30Plug6
17***31Valve1
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318-8396 Motor & Manifold Gp-Rotator
09***01Bolt-Socket Head; (M8x1.25x40-mm)4
17***55Seal-O-Ring2
20***74Bolt-Socket Head; (M16x2x55-mm)8
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216-7650 Motor Gp-Gerotor
14***86Fitting As2
15***44Seal1
17***77Fitting As; (Quick Disconnect, Male)4
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170-2173 Motor Gp-Gerotor
14***86Fitting As2
15***44Seal1
17***73Motor Group-Gerotor1
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323-8109 Rotator Gp-Hydraulic
19***01Adjusting Ring1
32***09Rotator Group-Hydraulic1
32***80Template1
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266-7382 Rotator Gp-Hydraulic
20***41Washer; (21x63.5x22-mm Thk)2
24***85Ring1
24***86Wrench; (Lock, 140)1
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314-9134 Rotator Gp-Hydraulic
20***41Washer; (21x63.5x22-mm Thk)2
24***86Wrench; (Lock, 140)1
24***76Wrench; (Lock, 160)1
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243-1695 Rotator Gp-Hydraulic
16***15Ring-Adjustment1
24***95Rotator Group-Hydraulic1
31***60Pipe1
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265-6468 Swivel Gp
16***93Ring-Adjustment1
26***68Swivel Group1
31***60Pipe1
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318-8397 Swivel Gp
15***96Film-Notice; (Lift Eye Location)3
22***69Film-Warning; (Do Not Operate, Read Omm)2
24***58Film-Identification; (Cat S365b)2
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208-8451 Valve Gp-Control
15***96Film-Notice; (Lift Eye Location)3
20***51Valve Group-Control1
22***69Film-Warning; (Do Not Operate, Read Omm)2
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170-3229 Valve Gp-Speed Control
13***55Setscrew; (M4x0.7x8-mm)2
17***29Valve Group-Speed Control1
23***60Film-Notice; (Lift Eye Location)4
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208-5125 Valve Gp-Speed Control
13***55Setscrew; (M4x0.7x8-mm)2
20***25Valve Group-Speed Control1
23***60Film-Notice; (Lift Eye Location)4
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Service Equipment And Supplies
327-5368 Kit-Maintenance
240-5914 Kit-Maintenance
327-8979 Kit-Maintenance
327-8983 Kit-Maintenance
325-6438 Kit-Maintenance
226-0718 Kit-Maintenance
13***55Setscrew; (M4x0.7x8-mm)2
22***18Kit-Maintenance1
23***60Film-Notice; (Lift Eye Location)4
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317-8059 Kit-Maintenance
200-2962 Lock Gp-Shear
327-8987 Plate & Film Gp
240-5913 Plate & Film Gp
226-0717 Plate & Film Gp
327-8989 Plate & Film Gp
327-8988 Plate & Film Gp
Work Tool Arrangement
317-5989 Shear Ar-Hydraulic
31***89Shear Ar-Hydraulic1
31***90Shear Ar-Hydraulic1
31***59Kit-Maintenance1
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318-6201 Shear Ar-Hydraulic
31***01Shear Ar-Hydraulic1
31***11Shear Group-Hydraulic1
32***83Kit-Maintenance1
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318-7240 Shear Ar-Hydraulic
31***27Shear Group-Hydraulic1
31***40Shear Ar-Hydraulic1
32***79Kit-Maintenance1
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226-0716 Shear Ar-Hydraulic
22***13Shear Group-Hydraulic1
22***16Shear Ar-Hydraulic1
22***18Kit-Maintenance1
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317-5990 Shear Ar-Hydraulic
31***08Housing Group-Shear, Flexible Hose1
31***34Rotator Group-Hydraulic1
31***90Shear Ar-Hydraulic1
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240-5911 Shear Ar-Hydraulic
24***11Shear Ar-Hydraulic1
24***12Shear Group-Hydraulic1
24***13Plate & Film Group1
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Work Tools
199-1259 Bracket Gp-Mounting
15***21Lockwasher2
16***82Bolt-Socket Head; (M24x3x70-mm)10
19***59Bracket Group-Mounting1
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254-4463 Bracket Gp-Mounting
14***90Bearing-Sleeve; (140.26mm Od)2
15***18Lockwasher16
17***61Cover2
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254-5862 Bracket Gp-Mounting
14***33Boss-Tapped; (Tapped)1
15***19Lockwasher16
18***74Cover2
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233-4675 Bracket Gp-Mounting
13***55Setscrew; (M4x0.7x8-mm)2
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
20***59Plate-Serial Number1
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256-3109 Bracket Gp-Mounting
15***18Lockwasher6
17***33Cover1
25***09Bracket Group-Mounting1
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269-7527 Bracket Gp-Mounting
15***18Lockwasher8
19***96Cover1
26***27Bracket Group-Mounting1
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282-2863 Bracket Gp-Mounting
22***62Shim; (1-mm Thk)4
22***63Shim; (1-mm Thk)4
22***64Shim; (1.5-mm Thk)4
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190-5435 Bracket Gp-Mounting
13***17Bearing-Sleeve; (116.23mm Od)2
15***19Lockwasher16
17***61Cover2
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363-7700 Bracket Gp-Mounting
31***34Rotator Group-Hydraulic1
31***12Housing Group-Shear1
36***00Bracket Group-Mounting1
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270-1912 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)42
27***12Bracket Group-Mounting1
27***79Bracket Group-Mounting1
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222-8511 Bracket Gp-Mounting
14***90Bearing-Sleeve; (140.26mm Od)2
15***19Lockwasher16
17***61Cover2
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179-1648 Bracket Gp-Mounting
15***18Lockwasher6
17***46Bracket As1
17***33Cover1
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180-1286 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
18***86Bracket Group-Mounting1
19***94Bracket Group-Mounting1
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209-1776 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)16
20***76Bracket Group-Mounting1
22***11Bracket Group-Mounting1
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344-2681 Bracket Gp-Mounting
34***81Bracket Group-Mounting1
8T***32Nut (M16 X 2 Thd); (M16x2.00 Thd)2
8T***75Bolt; (M16x2x90-mm)1
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257-4109 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)44
25***09Bracket Group-Mounting1
26***27Bracket Group-Mounting1
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272-4879 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)16
27***79Bracket Group-Mounting1
31***50Bracket Group-Mounting1
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271-0111 Bracket Gp-Mounting
10***96Bearing-Sleeve2
13***55Setscrew; (M4x0.7x8-mm)2
15***19Lockwasher16
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169-4968 Bracket Gp-Mounting
16***68Bracket Group-Mounting1
16***82Bolt-Socket Head; (M24x3x70-mm)14
23***05Bracket As1
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318-8149 Bracket Gp-Mounting
15***21Lockwasher3
23***74Bushing10
25***68Plate-Wear1
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247-0536 Bracket Gp-Mounting
09***49Washer; (22x60x6-mm Thk)1
16***82Bolt-Socket Head; (M24x3x70-mm)14
20***71Washer; (26x90x8-mm Thk)1
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257-0098 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
25***98Bracket Group-Mounting1
25***02Bracket Group-Mounting1
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347-1016 Bracket Gp-Mounting
24***15Housing Group-Shear1
24***95Rotator Group-Hydraulic1
34***16Bracket Group-Mounting1
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222-8508 Bracket Gp-Mounting
15***19Lockwasher16
18***74Cover2
22***08Bracket Group-Mounting1
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362-8489 Bracket Gp-Mounting
31***06Housing Group-Shear1
32***09Rotator Group-Hydraulic1
36***89Bracket Group-Mounting1
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257-1047 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)46
25***47Bracket Group-Mounting1
25***09Bracket Group-Mounting1
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257-4110 Bracket Gp-Mounting
15***18Lockwasher8
19***96Cover1
25***10Bracket Group-Mounting1
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175-0339 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
17***39Bracket Group-Mounting1
17***48Bracket Group-Mounting1
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193-9094 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
19***94Bracket Group-Mounting1
19***58Bracket Group-Mounting1
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257-0102 Bracket Gp-Mounting
15***18Lockwasher6
17***33Cover1
25***02Bracket Group-Mounting1
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233-4676 Bracket Gp-Mounting
15***18Lockwasher6
17***33Cover1
23***76Bracket Group-Mounting1
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253-7830 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)46
25***30Bracket Group-Mounting1
25***62Bracket Group-Mounting1
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199-1258 Bracket Gp-Mounting
13***55Setscrew; (M4x0.7x8-mm)2
16***82Bolt-Socket Head; (M24x3x70-mm)14
19***58Bracket Group-Mounting1
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189-0311 Bracket Gp-Mounting
15***19Lockwasher16
17***61Cover2
18***11Bracket Group-Mounting1
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282-2864 Bracket Gp-Mounting
22***63Shim; (1-mm Thk)4
22***64Shim; (1.5-mm Thk)4
22***67Edge-Cutting2
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222-8513 Bracket Gp-Mounting
09***54Seal; (Id=79.85mm)2
13***59Bearing-Sleeve2
15***19Lockwasher16
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254-5861 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)14
25***61Bracket Group-Mounting1
25***09Bracket Group-Mounting1
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257-0099 Bracket Gp-Mounting
15***18Lockwasher6
17***33Cover1
25***99Bracket Group-Mounting1
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222-8512 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)14
22***12Bracket Group-Mounting1
23***76Bracket Group-Mounting1
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270-1913 Bracket Gp-Mounting
15***18Lockwasher8
19***96Cover1
27***13Bracket Group-Mounting1
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222-8507 Bracket Gp-Mounting
13***17Bearing-Sleeve; (116.23mm Od)2
15***19Lockwasher16
18***74Cover2
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257-1041 Bracket Gp-Mounting
15***28Bearing-Sleeve2
15***19Lockwasher16
17***61Cover2
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269-7525 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)44
26***25Bracket Group-Mounting1
27***13Bracket Group-Mounting1
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256-3108 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
25***08Bracket Group-Mounting1
25***99Bracket Group-Mounting1
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282-0532 Bracket Gp-Mounting
13***17Bearing-Sleeve; (116.23mm Od)2
15***19Lockwasher16
18***74Cover2
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222-8506 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
22***06Bracket Group-Mounting1
22***13Bracket Group-Mounting1
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257-0101 Bracket Gp-Mounting
17***90Bolt-Socket Head; (M20x2.5x70-mm)36
25***01Bracket Group-Mounting1
25***47Bracket Group-Mounting1
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246-9991 Bracket Gp-Mounting
09***49Washer; (22x60x6-mm Thk)2
13***55Setscrew; (M4x0.7x8-mm)2
16***82Bolt-Socket Head; (M24x3x70-mm)14
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220-9951 Bracket Gp-Mounting
16***82Bolt-Socket Head; (M24x3x70-mm)14
22***51Bracket Group-Mounting1
22***12Bracket Group-Mounting1
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318-8150 Bracket Gp-Mounting
14***78Lockwasher3
17***93Bolt-Socket Head; (M20x2.5x80-mm)3
22***49Plate-Wear1
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317-8040 Edge Gp-Cutting
09***05Bolt-Socket Head; (M16x2x100-mm)8
15***19Lockwasher2
15***21Lockwasher28
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315-0192 Edge Gp-Cutting
15***19Lockwasher2
15***21Lockwasher30
16***12Clip; (Slot)2
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227-3769 Edge Gp-Cutting
22***69Edge Group-Cutting1
26***82Rotator Group-Hydraulic1
32***40Housing Group-Shear1
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322-1929 Edge Gp-Cutting
15***19Lockwasher2
15***21Lockwasher4
16***41Bushing2
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240-6810 Edge Gp-Cutting
24***10Edge Group-Cutting1
24***95Rotator Group-Hydraulic1
32***70Housing Group-Shear1
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344-1058 Mounting Gp-Work Tool
15***21Lockwasher3
23***74Bushing10
25***69Plate-Wear1
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347-0502 Mounting Gp-Work Tool
22***14Housing Group-Shear1
26***82Rotator Group-Hydraulic1
34***02Mounting Group-Work Tool1
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317-8027 Shear Gp-Hydraulic
15***19Lockwasher2
15***21Lockwasher14
16***12Clip; (Slot)2
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327-5369 Shear Gp-Hydraulic
16***16Seal1
17***21Adapter As1
1P***05Seal (Check Valve Outlet)2
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226-0713 Shear Gp-Hydraulic
15***19Lockwasher2
15***21Lockwasher2
17***15Bushing2
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318-6211 Shear Gp-Hydraulic
09***05Bolt-Socket Head; (M16x2x100-mm)8
15***21Lockwasher12
16***12Clip; (Slot)2
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240-5912 Shear Gp-Hydraulic
10***40Plug1
15***19Lockwasher2
15***21Lockwasher4
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325-6439 Shear Gp-Hydraulic
16***16Seal1
17***21Adapter As1
1P***05Seal (Check Valve Outlet)2
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Frequently asked questions

What engine does the Caterpillar 365B use?

The Caterpillar 365B uses a Caterpillar C15 ACERT engine with ADEM II electronic control and electronically controlled unit injectors (EUI). It produces 302 kW (404 hp) at 1,800 rpm.

What is the operating weight of the Caterpillar 365B?

The standard operating weight of the Caterpillar 365B is approximately 67.63 tons (149,000 lbs). Weight varies by configuration, attachment, and undercarriage setup.

What model replaced the Caterpillar 365B?

The Caterpillar 365C series replaced the 365B. The 365C introduced ACERT technology with mechanically actuated electronic fuel injection (MEUI) and updated emissions compliance.

What S365B owners discuss

What engine powers the Caterpillar 365B, and what are its key electronic fuel system characteristics?
The Caterpillar 365B is powered by the Cat C15 ACERT engine, a 15.2-liter, six-cylinder unit producing 302 kW (404 hp) at 1800 rpm. It utilizes the Advanced Diesel Engine Module (ADEM II) controller and a computer-actuated unit injector (EUI) fuel system. This system is mechanically actuated but electronically controlled, providing high injection pressure for complete combustion and improved fuel efficiency while meeting EPA Tier 2 emission standards.
How does the 365B's hydraulic and electronic control architecture function?
The machine employs an electronic control system using three controllers linked by Cat Data Link to manage engine and hydraulic functions. It features a Pump-Valve Controller and the Vital Information Display System (VIDS) for operator interface. The system uses electronic joysticks with low lever effort to eliminate pilot lines in the cab, allowing for programmable control patterns and precise engine speed settings via a ten-position dial.
What are the typical undercarriage and weight specifications for the 365B series?
Operating weights vary by configuration, with the 365B listed at approximately 67.63 tons (149,000 lbs) and the 365B L II at 68 tons. Track widths range from 600 mm to 650 mm. Transport dimensions typically measure 13.15–13.3 meters in length, 3.4–3.5 meters in width, and 4.37–5.02 meters in height. Ground pressure and exact weights depend on the final configuration, including counterweight and attachment packages.
What are the common electrical and sensor issues reported for this machine type?
Electrical instability is a primary concern, often caused by moisture intrusion into connectors, stressed wiring harnesses, or failing charging systems. Weak batteries can cause the ECM to behave erratically, leading to unpredictable fault codes and startup failures. Operators should inspect for loose or corroded grounds, damaged wiring, and alternator output, as voltage loss under load is a frequent root cause of perceived control unit failures.
What engine quirks or maintenance points are specific to the C15 ACERT series?
The C15 ACERT engine features a separate cooling system with a hydrostatically driven fan to reduce fuel consumption during cooler ambient conditions. It has four valves per cylinder for superior heat rejection. Maintenance intervals for engine oil, oil filters, and fuel filters are typically set at 500 hours. The engine relies on precise timing via camshaft-actuated valves and unit injectors, requiring strict adherence to fuel and air filtration standards to prevent injector damage from low-quality fuel or dust accumulation.
What hydraulic fluid specifications are recommended for the 365B?
Caterpillar recommends Cat DEO or Cat DEO-ULS multigrade oils for hydraulic systems. For applications requiring fire-resistant fluids, specific biodegradable or fire-resistant hydraulic oils should be selected based on regional availability and application needs. Fluid selection should align with the machine's operating environment and temperature ranges.
What should be checked when buying a used 365B?
Verify the exact serial-prefix specification sheet to confirm the installed engine package, emissions tier, and attachment configuration. Inspect the ADEM II controller and VIDS display for error codes and calibration integrity. Check the condition of the electronic joysticks and wiring harnesses for moisture damage or stress. Evaluate the undercarriage wear against the track width (600–650 mm) and verify the hydrostatic fan operation. Confirm that the C15 engine's unit injectors and turbocharger are free of excessive soot or oil leakage, and ensure the cooling system is clean to prevent overheating.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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