Caterpillarwork toolshear-demolition/scrap
Caterpillar S340B
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar S340B is a mobile hydraulic scrap and demolition shear designed for heavy-duty steel processing and primary demolition. It belongs to the mid-size shear class, typically mounted on 35 to 60-ton excavators such as the 326F, 336F, 349F, and 374F series. The tool features a unique straight lower jaw design to maximize cutting force and reversible knives with four effective cutting edges. Production years for this specific B-series model span approximately 2012 to 2016. It succeeded earlier S-series hydraulic shears and was followed by the C-series generation. Configurations include boom mount and stick mount variants, offering different weights and reach profiles to match specific carrier capacities.
Across generations, the S340B introduced a straight lower jaw geometry that improved steel distribution along the cutting edge, enhancing shear force compared to angled predecessors. The B-series standardized the integration of Cat hydraulic systems with the shear housing, protecting cylinders throughout the cutting cycle. In the used and parts market, the S340B remains significant due to its widespread deployment on popular 30-ton class excavators. Its modular design allows for easy maintenance via large access panels, and the availability of reversible knives extends service life. The machine's balanced weight-to-force ratio makes it a benchmark for secondary demolition and scrap yard operations.
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 S340B specifications
Engine
| Model | Not documented for this exact serial range — verify with your dealer |
| Gross/Net Power | Not documented for this exact serial range — verify with your dealer |
| Displacement | Not documented for this exact serial range — verify with your dealer |
| Cylinders | Not documented for this exact serial range — verify with your dealer |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | 4 t (8,818 lb) |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | 3,638 mm (11.94 ft) |
| Transport Width | Not documented for this exact serial range — verify with your dealer |
| Transport Height | Not documented for this exact serial range — verify with your dealer |
| Track Gauge / Wheelbase | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
| Jaw Opening | 563 mm (22.2 in) |
| Wrench Opening Depth | 703 mm (27.7 in) |
Performance
| Travel Speeds | Not documented for this exact serial range — verify with your dealer |
| Throat Force | 766.0 short tons (1,532,000 lbf) |
| Apex Force | 309.0 short tons (618,000 lbf) |
| Tip Force | 175.0 short tons (350,000 lbf) |
| Cutting Force | 6,818 kN (1,533,000 lbf) |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Caterpillar S340B maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the S340B beyond the schedule
Predictive Maintenance & Fluid Analysis
Implement S.O.S fluid analysis at 1000-hour intervals to monitor engine oil wear metals and hydraulic fluid contamination. Check coolant SCA concentration at 500 hours to prevent liner pitting. Monitor hydraulic oil viscosity and oxidation levels to detect pump wear early. Use Cat HYDO Advanced oil to maintain system efficiency. Analyze fuel samples for water content to protect injectors. Track particle counts in hydraulic fluid to extend filter life and prevent valve damage.
Corrective & Common Repairs
Replace reversible knives when cutting edges wear to maintain apex force. Inspect cylinder seals for leaks during the 2000-hour service. Check hydraulic hose condition for abrasion against the shear housing. Grease all pivot points daily to prevent pin and bushing wear. Replace fuel filters at 500 hours to avoid injector issues. Inspect the straight lower jaw for deformation after heavy structural demolition. Tighten shear arm bolts to specified torque to prevent mounting failures.
Overhaul & Rebuild Points
Plan hydraulic oil changes at 2000 hours or based on S.O.S results. Flush the cooling system at 2000 hours to remove sediment. Inspect final drive oil for gear wear metals at 1000 hours. Evaluate swing drive oil condition during major service intervals. Check structural welds on the boom and stick for fatigue cracks. Replace air filter elements when restriction indicators trigger. Inspect the shear housing for internal wear that affects cylinder protection.
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 climates to ensure pivot lubrication. Switch to SAE 10W-30 DEO-ULS engine oil for temperatures below -15°C. Inspect hydraulic hoses for brittleness in extreme cold. Use biodegradable hydraulic oil in environmentally sensitive areas. Monitor coolant glycol concentration for freeze protection.
S340B fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CID 0110 FMI 03 | Engine Coolant Temperature Sensor — Voltage Above Normal | Open circuit in sensor wiring, failed sensor, or short to power on the signal line. | Inspect wiring harness for damage; test sensor resistance and signal voltage; replace sensor if faulty. |
| CID 0190 FMI 08 | Engine Speed Sensor — Abnormal Frequency | Damaged speed sensor, incorrect air gap, or damaged tone ring on the crankshaft or flywheel. | Check sensor mounting and air gap; inspect tone ring for missing teeth; test sensor output signal. |
| CID 0041 FMI 03 | 8-Volt DC Supply — Voltage Above Normal | Short to power on the 8-volt reference circuit shared by multiple sensors. | Disconnect sensors on the 8V circuit one by one to isolate the short; inspect wiring for chafing. |
| CID 0041 FMI 04 | 8-Volt DC Supply — Voltage Below Normal | Short to ground on the 8-volt reference circuit. | Disconnect sensors on the 8V circuit sequentially to locate the grounded wire; repair harness. |
| CID 0262 FMI 04 | 5-Volt Supply — Voltage Below Normal | Short to ground on the 5-volt sensor reference circuit. | Disconnect 5V sensors individually to find the short; inspect connectors for moisture or corrosion. |
| CID 0248 FMI 09 | CAT Data Link — Abnormal Update Rate | Communication error on the data link, often due to damaged wiring, poor connections, or module failure. | Check data link connectors for corrosion or damage; verify termination resistors; inspect wiring for shorts. |
| CID 0168 FMI 01 | System Voltage — Below Normal | Low battery voltage, failing alternator, or loose battery cables. | Check battery charge and terminal tightness; test alternator output voltage under load. |
| CID 0091 FMI 02 | Throttle Position Sensor — Erratic/Incorrect | Loose wiring, failing sensor, or mechanical binding in the throttle linkage. | Check throttle linkage for free movement; inspect sensor wiring; test sensor signal variation. |
| CID 0100 FMI 01 | Engine Oil Pressure Sensor — Data Below Normal | Low oil level, failing oil pump, or faulty sensor. | Check oil level immediately; verify actual oil pressure with a mechanical gauge; test sensor. |
| CID 0268 FMI 02 | Programmed Parameter Fault — Erratic/Incorrect | ECM memory corruption, low battery during programming, or incorrect calibration data. | Perform ECM calibration/reprogramming via diagnostic tool; check battery voltage during operation. |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
S340B attachments & work tools
Hydraulic Scrap Shears
The S340B is a mobile hydraulic shear designed for steel recycling and primary demolition, featuring a redesigned lower jaw, wider jaw opening, and knife-retention system. It delivers a cutting force of 6818 kN with a jaw opening of 563 mm and a wrench opening depth of 703 mm. The tool weighs 4 t and has a total length of 3638 mm, with a carrying device capacity of 35-60 t varies by configuration/series.
Mounting & Coupling Systems
The S340B utilizes boom or stick mounting options for integration with Cat excavators, allowing for rapid tool exchange. Quick couplers are available to enable one-person operation for changing work tools in seconds. Factory configurations may include specific boom or stick adapters to match the host machine's hydraulic and structural requirements.
Hydraulic Kit & Arrangement
The shear requires high hydraulic power and specific flow arrangements to operate its cutting mechanism and jaw adjustment system. Operators must consult the Caterpillar Machine Fluids Recommendations (SEBU6250) for compatible hydraulic fluids such as Cat HYDO Advanced or biodegradable options.
Guarding & Structural Options
The tool features a robust jaw-adjustment system and knife-retention system to balance tool strength against high shear forces. Guarding options are designed to protect the hydraulic lines and internal components during heavy-duty demolition and scrap processing. The carrying device capacity of 35-60 t varies by configuration/series, requiring appropriate structural support on the host excavator.
All S340B assemblies by section
Every catalogued assembly group for the Caterpillar S340B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Frame And Body
317-6006 Housing Gp-Shear
| 14***06 | Bolt-Socket Head; (M20x2.5x140-mm) | 5 |
| 20***25 | Valve Group-Speed Control | 1 |
| 24***97 | Cylinder & Lines Group-Shear | 1 |
327-5370 Housing Gp-Shear
| 14***16 | Connector Group | 2 |
| 14***51 | Elbow Group | 1 |
| 16***54 | Seal | 1 |
240-5915 Housing Gp-Shear
| 14***16 | Connector Group | 1 |
| 16***24 | Hose As | 1 |
| 17***64 | Hose As | 1 |
310-2108 Housing Gp-Shear
| 14***06 | Bolt-Socket Head; (M20x2.5x140-mm) | 5 |
| 20***25 | Valve Group-Speed Control | 1 |
| 22***13 | Cylinder & Lines Group-Shear | 1 |
318-6212 Housing Gp-Shear
| 14***16 | Connector Group | 2 |
| 14***51 | Elbow Group | 1 |
| 16***54 | Seal | 1 |
226-0714 Housing Gp-Shear
| 14***16 | Connector Group | 1 |
| 18***03 | Hose As | 1 |
| 19***85 | Hose As | 1 |
325-6440 Housing Gp-Shear
| 14***16 | Connector Group | 2 |
| 14***51 | Elbow Group | 1 |
| 16***54 | Seal | 1 |
Hydraulic System
318-0062 Cylinder & Lines Gp-Shear
| 14***16 | Connector Group | 1 |
| 18***15 | Hose As | 1 |
| 18***16 | Hose As | 1 |
321-3765 Cylinder & Lines Gp-Shear
| 09***48 | Nipple, Grease | 1 |
| 09***06 | Bolt-Socket Head; (M16x2x80-mm) | 24 |
| 16***71 | Bushing | 2 |
240-5497 Cylinder & Lines Gp-Shear
| 14***06 | Bolt-Socket Head; (M20x2.5x140-mm) | 5 |
| 20***25 | Valve Group-Speed Control | 1 |
| 24***97 | Cylinder & Lines Group-Shear | 1 |
228-8613 Cylinder & Lines Gp-Shear
| 14***06 | Bolt-Socket Head; (M20x2.5x140-mm) | 5 |
| 20***25 | Valve Group-Speed Control | 1 |
| 22***13 | Cylinder & Lines Group-Shear | 1 |
317-8054 Cylinder & Valve Gp
| 16***16 | Seal | 1 |
| 17***23 | Plug As | 4 |
| 17***23 | Bushing | 2 |
227-3768 Cylinder & Valve Gp
| 16***16 | Seal | 1 |
| 17***21 | Adapter As | 1 |
| 1P***05 | Seal (Check Valve Outlet) | 2 |
317-5991 Cylinder & Valve Gp
| 16***16 | Seal | 1 |
| 17***21 | Adapter As | 1 |
| 1P***05 | Seal (Check Valve Outlet) | 2 |
240-5496 Cylinder & Valve Gp
| 16***16 | Seal | 1 |
| 17***23 | Plug As | 4 |
| 17***23 | Bushing | 2 |
321-2531 Cylinder & Valve Gp
| 09***48 | Nipple, Grease | 1 |
| 14***84 | Bolt-Socket Head; (M20x2.5x110-mm) | 22 |
| 16***55 | Bushing | 2 |
327-5371 Cylinder & Valve Gp
| 09***48 | Nipple, Grease | 1 |
| 16***87 | Bushing | 2 |
| 17***50 | Pin-Spring | 1 |
318-0061 Cylinder & Valve Gp
| 16***54 | Seal | 1 |
| 17***82 | Bolt-Socket Head; (M24x3x150-mm) | 29 |
| 20***98 | Lock | 1 |
321-2532 Cylinder Gp-Hydraulic
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
| 21***27 | Hose As | 2 |
321-2534 Cylinder Gp-Hydraulic
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
| 21***02 | Hose As | 2 |
317-5992 Cylinder Gp-Hydraulic
| 16***54 | Seal | 1 |
| 17***82 | Bolt-Socket Head; (M24x3x150-mm) | 29 |
| 20***98 | Lock | 1 |
327-5372 Cylinder Gp-Hydraulic
| 13***38 | Hose As. | 2 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
317-5993 Cylinder Gp-Hydraulic
| 14***45 | Connector As | 2 |
| 20***74 | Fitting Group-Hydraulic; (Quick Disconnect, Female) | 2 |
| 2M***80 | Seal--To Connector Pump Outlet | 1 |
327-5373 Cylinder Gp-Shear
| 09***70 | Bolt-Socket Hd; (M12 X 1.75 X 45) | 16 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
| 1P***67 | Flange-Half (43.31 mm Id) | 8 |
227-4144 Cylinder Gp-Shear
| 10***16 | Hose As | 2 |
| 1P***04 | Seal - Rectangular (45mm Dia) | 4 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
317-6403 Cylinder Gp-Shear
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
| 1P***67 | Flange-Half (43.31 mm Id) | 4 |
| 23***81 | Hose As | 2 |
317-6404 Cylinder Gp-Shear
| 25***45 | Hose As | 2 |
| 31***04 | Cylinder Group-Shear | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 2 |
240-5484 Cylinder Gp-Shear
| 16***46 | Bar-Clamp | 2 |
| 16***90 | Clip; (Slot) | 2 |
| 16***91 | Clip; (Tab) | 2 |
270-7425 Fitting Gp-Hydraulic
| 1P***05 | Seal (Check Valve Outlet) | 4 |
| 20***08 | Hose As | 2 |
| 25***89 | Hose As | 1 |
211-9059 Lines Gp-Connecting
| 14***59 | Hose As | 2 |
| 21***59 | Lines Group-Connecting | 1 |
| 5P***77 | Flange-Half | 4 |
270-4348 Lines Gp-Connecting
| 17***73 | Motor Group-Gerotor | 1 |
| 17***76 | Ring-Mounting | 1 |
| 17***77 | Gear-Drive; (15-Teeth) | 1 |
270-4349 Lines Gp-Connecting
| 09***73 | Bolt; (Socket Head) (M12x1.75x60mm) | 8 |
| 12***28 | Adaptor - Includes:- | 4 |
| 12***24 | Seal-O-Ring; (12.37mm Id) | 4 |
244-6796 Lines Gp-Connecting
| 1P***04 | Seal - Rectangular (45mm Dia) | 3 |
| 1P***05 | Seal (Check Valve Outlet) | 1 |
| 1P***67 | Flange-Half (43.31 mm Id) | 2 |
270-3924 Lines Gp-Connecting
| 1P***04 | Seal - Rectangular (45mm Dia) | 2 |
| 1P***05 | Seal (Check Valve Outlet) | 2 |
| 27***24 | Lines Group-Connecting | 1 |
221-0855 Lines Gp-Connecting
| 22***55 | Lines Group-Connecting | 1 |
| 27***24 | Lines Group-Connecting | 1 |
| 27***25 | Lines Group-Connecting | 1 |
216-1733 Lines Gp-Connecting
| 14***68 | Hose As | 2 |
| 14***45 | Connector As | 2 |
| 21***33 | Lines Group-Connecting | 1 |
341-2542 Lines Gp-Connecting
| 13***54 | Plug As | 3 |
| 20***87 | Slack Adjuster Group | 1 |
| 20***88 | Valve Group-Control | 1 |
270-7586 Lines Gp-Connecting
| 08***72 | Seal-O-Ring | 1 |
| 14***28 | Connector Assem. | 2 |
| 14***35 | Connect Group; (Each Includes) | 4 |
302-8171 Lines Gp-Connecting
| 14***09 | Plug As-Sto | 2 |
| 17***42 | Rotor | 1 |
| 17***43 | Ring | 1 |
239-9252 Lines Gp-Connecting
| 23***52 | Lines Group-Connecting | 1 |
| 24***96 | Lines Group-Connecting | 1 |
| 27***85 | Lines Group-Connecting | 1 |
273-7602 Lines Gp-Connecting
| 08***72 | Seal-O-Ring | 1 |
| 14***28 | Connector Assem. | 2 |
| 14***35 | Connect Group; (Each Includes) | 4 |
221-0856 Lines Gp-Connecting
| 21***73 | Hose As | 2 |
| 22***56 | Lines Group-Connecting | 1 |
| 5P***77 | Flange-Half | 4 |
239-9250 Lines Gp-Connecting
| 23***50 | Lines Group-Connecting | 1 |
| 27***47 | Lines Group-Connecting | 1 |
| 27***48 | Lines Group-Connecting | 1 |
258-9890 Lines Gp-Connecting
| 1P***04 | Seal - Rectangular (45mm Dia) | 1 |
| 1P***05 | Seal (Check Valve Outlet) | 3 |
| 1P***67 | Flange-Half (43.31 mm Id) | 2 |
270-3925 Lines Gp-Connecting
| 14***20 | Bolt-Socket Head; (M6x1x75-mm) | 4 |
| 27***25 | Lines Group-Connecting | 1 |
| 7Y***19 | Seal-O-Ring (Id=12.37mm) | 2 |
273-9212 Lines Gp-Connecting
| 16***43 | Seal | 1 |
| 17***57 | Plug As | 4 |
| 17***14 | Stator | 1 |
221-0857 Lines Gp-Connecting
| 14***45 | Connector As | 2 |
| 22***57 | Lines Group-Connecting | 1 |
| 24***08 | Hose As | 2 |
270-3926 Lines Gp-Connecting
| 14***20 | Bolt-Socket Head; (M6x1x75-mm) | 4 |
| 17***73 | Motor Group-Gerotor | 1 |
| 17***77 | Gear-Drive; (15-Teeth) | 1 |
239-9251 Lines Gp-Connecting
| 14***68 | Hose As | 2 |
| 14***45 | Connector As | 2 |
| 23***51 | Lines Group-Connecting | 1 |
270-7585 Lines Gp-Connecting
| 09***73 | Bolt; (Socket Head) (M12x1.75x60mm) | 16 |
| 12***28 | Adaptor - Includes:- | 4 |
| 12***24 | Seal-O-Ring; (12.37mm Id) | 4 |
270-4347 Lines Gp-Connecting
| 17***21 | Kit-Housing | 1 |
| 17***22 | Shaft-Output | 1 |
| 17***25 | Key-Square | 1 |
170-2174 Manifold Gp-Control
| 17***74 | Manifold Group-Control | 1 |
| 17***30 | Plug | 6 |
| 17***31 | Valve | 1 |
318-8396 Motor & Manifold Gp-Rotator
| 09***01 | Bolt-Socket Head; (M8x1.25x40-mm) | 4 |
| 17***55 | Seal-O-Ring | 2 |
| 20***74 | Bolt-Socket Head; (M16x2x55-mm) | 8 |
216-7650 Motor Gp-Gerotor
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
| 17***77 | Fitting As; (Quick Disconnect, Male) | 4 |
170-2173 Motor Gp-Gerotor
| 14***86 | Fitting As | 2 |
| 15***44 | Seal | 1 |
| 17***73 | Motor Group-Gerotor | 1 |
314-9134 Rotator Gp-Hydraulic
| 20***41 | Washer; (21x63.5x22-mm Thk) | 2 |
| 24***86 | Wrench; (Lock, 140) | 1 |
| 24***76 | Wrench; (Lock, 160) | 1 |
243-1695 Rotator Gp-Hydraulic
| 16***15 | Ring-Adjustment | 1 |
| 24***95 | Rotator Group-Hydraulic | 1 |
| 31***60 | Pipe | 1 |
266-7382 Rotator Gp-Hydraulic
| 20***41 | Washer; (21x63.5x22-mm Thk) | 2 |
| 24***85 | Ring | 1 |
| 24***86 | Wrench; (Lock, 140) | 1 |
323-8109 Rotator Gp-Hydraulic
| 19***01 | Adjusting Ring | 1 |
| 32***09 | Rotator Group-Hydraulic | 1 |
| 32***80 | Template | 1 |
265-6468 Swivel Gp
| 16***93 | Ring-Adjustment | 1 |
| 26***68 | Swivel Group | 1 |
| 31***60 | Pipe | 1 |
318-8397 Swivel Gp
| 15***96 | Film-Notice; (Lift Eye Location) | 3 |
| 22***69 | Film-Warning; (Do Not Operate, Read Omm) | 2 |
| 24***58 | Film-Identification; (Cat S365b) | 2 |
208-8451 Valve Gp-Control
| 15***96 | Film-Notice; (Lift Eye Location) | 3 |
| 20***51 | Valve Group-Control | 1 |
| 22***69 | Film-Warning; (Do Not Operate, Read Omm) | 2 |
170-3229 Valve Gp-Speed Control
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 17***29 | Valve Group-Speed Control | 1 |
| 23***60 | Film-Notice; (Lift Eye Location) | 4 |
208-5125 Valve Gp-Speed Control
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 20***25 | Valve Group-Speed Control | 1 |
| 23***60 | Film-Notice; (Lift Eye Location) | 4 |
Service Equipment And Supplies
240-5914 Kit-Maintenance
| 24***14 | Kit-Maintenance | 1 |
317-8059 Kit-Maintenance
| 31***59 | Kit-Maintenance | 1 |
327-5368 Kit-Maintenance
| 32***68 | Kit-Maintenance | 1 |
226-0718 Kit-Maintenance
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 22***18 | Kit-Maintenance | 1 |
| 23***60 | Film-Notice; (Lift Eye Location) | 4 |
327-8979 Kit-Maintenance
| 32***79 | Kit-Maintenance | 1 |
325-6438 Kit-Maintenance
| 32***38 | Kit-Maintenance | 1 |
327-8983 Kit-Maintenance
| 32***83 | Kit-Maintenance | 1 |
200-2962 Lock Gp-Shear
| 20***62 | Lock Group-Shear | 1 |
240-5913 Plate & Film Gp
| 24***13 | Plate & Film Group | 1 |
327-8987 Plate & Film Gp
| 32***87 | Plate & Film Group | 1 |
226-0717 Plate & Film Gp
| 22***17 | Plate & Film Group | 1 |
327-8989 Plate & Film Gp
| 32***89 | Plate & Film Group | 1 |
327-8988 Plate & Film Gp
| 32***88 | Plate & Film Group | 1 |
Work Tool Arrangement
226-0716 Shear Ar-Hydraulic
| 22***13 | Shear Group-Hydraulic | 1 |
| 22***16 | Shear Ar-Hydraulic | 1 |
| 22***18 | Kit-Maintenance | 1 |
318-7240 Shear Ar-Hydraulic
| 31***27 | Shear Group-Hydraulic | 1 |
| 31***40 | Shear Ar-Hydraulic | 1 |
| 32***79 | Kit-Maintenance | 1 |
317-5990 Shear Ar-Hydraulic
| 31***08 | Housing Group-Shear, Flexible Hose | 1 |
| 31***34 | Rotator Group-Hydraulic | 1 |
| 31***90 | Shear Ar-Hydraulic | 1 |
240-5911 Shear Ar-Hydraulic
| 24***11 | Shear Ar-Hydraulic | 1 |
| 24***12 | Shear Group-Hydraulic | 1 |
| 24***13 | Plate & Film Group | 1 |
317-5989 Shear Ar-Hydraulic
| 31***89 | Shear Ar-Hydraulic | 1 |
| 31***90 | Shear Ar-Hydraulic | 1 |
| 31***59 | Kit-Maintenance | 1 |
318-6201 Shear Ar-Hydraulic
| 31***01 | Shear Ar-Hydraulic | 1 |
| 31***11 | Shear Group-Hydraulic | 1 |
| 32***83 | Kit-Maintenance | 1 |
Work Tools
193-9094 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 19***94 | Bracket Group-Mounting | 1 |
| 19***58 | Bracket Group-Mounting | 1 |
257-1041 Bracket Gp-Mounting
| 15***28 | Bearing-Sleeve | 2 |
| 15***19 | Lockwasher | 16 |
| 17***61 | Cover | 2 |
222-8506 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 22***06 | Bracket Group-Mounting | 1 |
| 22***13 | Bracket Group-Mounting | 1 |
257-4110 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 19***96 | Cover | 1 |
| 25***10 | Bracket Group-Mounting | 1 |
222-8513 Bracket Gp-Mounting
| 09***54 | Seal; (Id=79.85mm) | 2 |
| 13***59 | Bearing-Sleeve | 2 |
| 15***19 | Lockwasher | 16 |
282-2864 Bracket Gp-Mounting
| 22***63 | Shim; (1-mm Thk) | 4 |
| 22***64 | Shim; (1.5-mm Thk) | 4 |
| 22***67 | Edge-Cutting | 2 |
257-1047 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 46 |
| 25***47 | Bracket Group-Mounting | 1 |
| 25***09 | Bracket Group-Mounting | 1 |
256-3108 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 25***08 | Bracket Group-Mounting | 1 |
| 25***99 | Bracket Group-Mounting | 1 |
253-7830 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 46 |
| 25***30 | Bracket Group-Mounting | 1 |
| 25***62 | Bracket Group-Mounting | 1 |
175-0339 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 17***39 | Bracket Group-Mounting | 1 |
| 17***48 | Bracket Group-Mounting | 1 |
269-7525 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 44 |
| 26***25 | Bracket Group-Mounting | 1 |
| 27***13 | Bracket Group-Mounting | 1 |
189-0311 Bracket Gp-Mounting
| 15***19 | Lockwasher | 16 |
| 17***61 | Cover | 2 |
| 18***11 | Bracket Group-Mounting | 1 |
254-5861 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 25***61 | Bracket Group-Mounting | 1 |
| 25***09 | Bracket Group-Mounting | 1 |
233-4676 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 23***76 | Bracket Group-Mounting | 1 |
257-0102 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***02 | Bracket Group-Mounting | 1 |
257-0101 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 25***01 | Bracket Group-Mounting | 1 |
| 25***47 | Bracket Group-Mounting | 1 |
199-1258 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 19***58 | Bracket Group-Mounting | 1 |
257-0099 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***99 | Bracket Group-Mounting | 1 |
347-1016 Bracket Gp-Mounting
| 24***15 | Housing Group-Shear | 1 |
| 24***95 | Rotator Group-Hydraulic | 1 |
| 34***16 | Bracket Group-Mounting | 1 |
318-8149 Bracket Gp-Mounting
| 15***21 | Lockwasher | 3 |
| 23***74 | Bushing | 10 |
| 25***68 | Plate-Wear | 1 |
199-1259 Bracket Gp-Mounting
| 15***21 | Lockwasher | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 10 |
| 19***59 | Bracket Group-Mounting | 1 |
270-1912 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 42 |
| 27***12 | Bracket Group-Mounting | 1 |
| 27***79 | Bracket Group-Mounting | 1 |
363-7700 Bracket Gp-Mounting
| 31***34 | Rotator Group-Hydraulic | 1 |
| 31***12 | Housing Group-Shear | 1 |
| 36***00 | Bracket Group-Mounting | 1 |
362-8489 Bracket Gp-Mounting
| 31***06 | Housing Group-Shear | 1 |
| 32***09 | Rotator Group-Hydraulic | 1 |
| 36***89 | Bracket Group-Mounting | 1 |
256-3109 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***33 | Cover | 1 |
| 25***09 | Bracket Group-Mounting | 1 |
179-1648 Bracket Gp-Mounting
| 15***18 | Lockwasher | 6 |
| 17***46 | Bracket As | 1 |
| 17***33 | Cover | 1 |
254-4463 Bracket Gp-Mounting
| 14***90 | Bearing-Sleeve; (140.26mm Od) | 2 |
| 15***18 | Lockwasher | 16 |
| 17***61 | Cover | 2 |
222-8511 Bracket Gp-Mounting
| 14***90 | Bearing-Sleeve; (140.26mm Od) | 2 |
| 15***19 | Lockwasher | 16 |
| 17***61 | Cover | 2 |
190-5435 Bracket Gp-Mounting
| 13***17 | Bearing-Sleeve; (116.23mm Od) | 2 |
| 15***19 | Lockwasher | 16 |
| 17***61 | Cover | 2 |
254-5862 Bracket Gp-Mounting
| 14***33 | Boss-Tapped; (Tapped) | 1 |
| 15***19 | Lockwasher | 16 |
| 18***74 | Cover | 2 |
233-4675 Bracket Gp-Mounting
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 20***59 | Plate-Serial Number | 1 |
269-7527 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 19***96 | Cover | 1 |
| 26***27 | Bracket Group-Mounting | 1 |
272-4879 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 16 |
| 27***79 | Bracket Group-Mounting | 1 |
| 31***50 | Bracket Group-Mounting | 1 |
222-8507 Bracket Gp-Mounting
| 13***17 | Bearing-Sleeve; (116.23mm Od) | 2 |
| 15***19 | Lockwasher | 16 |
| 18***74 | Cover | 2 |
222-8508 Bracket Gp-Mounting
| 15***19 | Lockwasher | 16 |
| 18***74 | Cover | 2 |
| 22***08 | Bracket Group-Mounting | 1 |
222-8512 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 22***12 | Bracket Group-Mounting | 1 |
| 23***76 | Bracket Group-Mounting | 1 |
247-0536 Bracket Gp-Mounting
| 09***49 | Washer; (22x60x6-mm Thk) | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 20***71 | Washer; (26x90x8-mm Thk) | 1 |
257-0098 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 25***98 | Bracket Group-Mounting | 1 |
| 25***02 | Bracket Group-Mounting | 1 |
282-0532 Bracket Gp-Mounting
| 13***17 | Bearing-Sleeve; (116.23mm Od) | 2 |
| 15***19 | Lockwasher | 16 |
| 18***74 | Cover | 2 |
282-2863 Bracket Gp-Mounting
| 22***62 | Shim; (1-mm Thk) | 4 |
| 22***63 | Shim; (1-mm Thk) | 4 |
| 22***64 | Shim; (1.5-mm Thk) | 4 |
344-2681 Bracket Gp-Mounting
| 34***81 | Bracket Group-Mounting | 1 |
| 8T***32 | Nut (M16 X 2 Thd); (M16x2.00 Thd) | 2 |
| 8T***75 | Bolt; (M16x2x90-mm) | 1 |
209-1776 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 16 |
| 20***76 | Bracket Group-Mounting | 1 |
| 22***11 | Bracket Group-Mounting | 1 |
220-9951 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 22***51 | Bracket Group-Mounting | 1 |
| 22***12 | Bracket Group-Mounting | 1 |
270-1913 Bracket Gp-Mounting
| 15***18 | Lockwasher | 8 |
| 19***96 | Cover | 1 |
| 27***13 | Bracket Group-Mounting | 1 |
257-4109 Bracket Gp-Mounting
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 44 |
| 25***09 | Bracket Group-Mounting | 1 |
| 26***27 | Bracket Group-Mounting | 1 |
180-1286 Bracket Gp-Mounting
| 17***90 | Bolt-Socket Head; (M20x2.5x70-mm) | 36 |
| 18***86 | Bracket Group-Mounting | 1 |
| 19***94 | Bracket Group-Mounting | 1 |
318-8150 Bracket Gp-Mounting
| 14***78 | Lockwasher | 3 |
| 17***93 | Bolt-Socket Head; (M20x2.5x80-mm) | 3 |
| 22***49 | Plate-Wear | 1 |
169-4968 Bracket Gp-Mounting
| 16***68 | Bracket Group-Mounting | 1 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
| 23***05 | Bracket As | 1 |
246-9991 Bracket Gp-Mounting
| 09***49 | Washer; (22x60x6-mm Thk) | 2 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 16***82 | Bolt-Socket Head; (M24x3x70-mm) | 14 |
271-0111 Bracket Gp-Mounting
| 10***96 | Bearing-Sleeve | 2 |
| 13***55 | Setscrew; (M4x0.7x8-mm) | 2 |
| 15***19 | Lockwasher | 16 |
227-3769 Edge Gp-Cutting
| 22***69 | Edge Group-Cutting | 1 |
| 26***82 | Rotator Group-Hydraulic | 1 |
| 32***40 | Housing Group-Shear | 1 |
322-1929 Edge Gp-Cutting
| 15***19 | Lockwasher | 2 |
| 15***21 | Lockwasher | 4 |
| 16***41 | Bushing | 2 |
317-8040 Edge Gp-Cutting
| 09***05 | Bolt-Socket Head; (M16x2x100-mm) | 8 |
| 15***19 | Lockwasher | 2 |
| 15***21 | Lockwasher | 28 |
315-0192 Edge Gp-Cutting
| 15***19 | Lockwasher | 2 |
| 15***21 | Lockwasher | 30 |
| 16***12 | Clip; (Slot) | 2 |
240-6810 Edge Gp-Cutting
| 24***10 | Edge Group-Cutting | 1 |
| 24***95 | Rotator Group-Hydraulic | 1 |
| 32***70 | Housing Group-Shear | 1 |
344-1058 Mounting Gp-Work Tool
| 15***21 | Lockwasher | 3 |
| 23***74 | Bushing | 10 |
| 25***69 | Plate-Wear | 1 |
347-0502 Mounting Gp-Work Tool
| 22***14 | Housing Group-Shear | 1 |
| 26***82 | Rotator Group-Hydraulic | 1 |
| 34***02 | Mounting Group-Work Tool | 1 |
318-6211 Shear Gp-Hydraulic
| 09***05 | Bolt-Socket Head; (M16x2x100-mm) | 8 |
| 15***21 | Lockwasher | 12 |
| 16***12 | Clip; (Slot) | 2 |
226-0713 Shear Gp-Hydraulic
| 15***19 | Lockwasher | 2 |
| 15***21 | Lockwasher | 2 |
| 17***15 | Bushing | 2 |
240-5912 Shear Gp-Hydraulic
325-6439 Shear Gp-Hydraulic
| 16***16 | Seal | 1 |
| 17***21 | Adapter As | 1 |
| 1P***05 | Seal (Check Valve Outlet) | 2 |
327-5369 Shear Gp-Hydraulic
| 16***16 | Seal | 1 |
| 17***21 | Adapter As | 1 |
| 1P***05 | Seal (Check Valve Outlet) | 2 |
317-8027 Shear Gp-Hydraulic
| 15***19 | Lockwasher | 2 |
| 15***21 | Lockwasher | 14 |
| 16***12 | Clip; (Slot) | 2 |
Frequently asked questions
What engine does the S340B use?
The S340B is a work tool attachment and does not have its own engine. It is powered by the hydraulic system of the carrier excavator, such as the Cat 326F, 336F, 349F, or 374F series, which use Cat C7.1 or C9 ACERT engines.
What is the operating weight of the S340B?
The operating weight varies by mounting configuration. The stick mount version weighs 4386 kg (9670 lb), and the boom mount version weighs 4695 kg (10351 lb).
What model replaced the S340B?
The S340B was succeeded by the S365C and S385C models in the C-series line of hydraulic scrap shears, which offer increased throat force and cutting capacity for larger excavators.
What S340B owners discuss
What are the known powertrain and hydraulic behaviors for the Caterpillar S340B work tool?
The S340B is a hydraulic scrap shear designed for excavators in the 326F–336F/336F XE class. It features a cutting force of 6818 kN (766 kip) with a maximum opening of 563 mm (22 in) and a wrench opening depth of 703 mm (27.7 in). The tool is engineered to balance strength against high shear force to minimize downtime. It requires high-capacity auxiliary hydraulics for continuous rotation and tine operation. Proper flow and pressure matching to the host excavator is critical to prevent premature wear or structural failure. Verify host machine hydraulic specifications against the tool’s requirements before operation. Have your dealer verify hydraulic compatibility and pressure settings for your specific excavator model.
What undercarriage or wear patterns are typical for machines operating with this tool type?
Operators report that high-resistance materials like steel scrap accelerate wear on cutting edges, tines, and pivot pins. The S340B’s design focuses on balancing tool strength with destructive shear force, but abrasive environments increase the frequency of wear part replacement. Regular inspection of the cutting jaws, tines, and hydraulic hose routing is necessary to prevent catastrophic failure. Ensure the host excavator’s undercarriage is in good condition to handle the dynamic loads generated during shear operations. Have your dealer verify undercarriage wear limits and pin/bushing clearance before deploying the tool in heavy scrap applications.
What engine quirks are associated with the series of excavators typically paired with the S340B?
The S340B is specified for use with Caterpillar excavators such as the 326F, 336F, and 336F XE. These machines utilize modern Tier 4 Final/Stage V compliant diesel engines that require Ultra-Low Sulfur Diesel (ULSD) with 15 ppm sulfur or less. The engines are compatible with up to 20% biodiesel FAME or 100% renewable diesel/HVO/GTL fuels.
What are common electrical or sensor issues reported for this equipment class?
Electrical instability is a noted issue in Caterpillar excavators, often manifesting as intermittent power loss to critical systems, flickering gauges, or slow engine starts. Faulty engine control relays, corroded battery terminals, or weak batteries can cause erratic behavior in the hydraulic control modules. Sensor failures may lead to incorrect hydraulic flow adjustments or engine derating.
What should be checked when buying a used S340B work tool?
Inspect the cutting jaws and tines for excessive wear, cracks, or deformation. Check the hydraulic cylinder rods for scoring or pitting, which can lead to seal failure and fluid leaks. Verify the rotation mechanism operates smoothly without binding or excessive play. Inspect all hydraulic hoses and fittings for cracks, abrasion, or leaks. Ensure the mounting pins and bushings are within wear limits.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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