Caterpillarwork toolrake-landscape

Caterpillar LR18B

Maintenance schedule, common problems & OEM parts breakdown

The Caterpillar LR18B is a landscape rake work tool attachment designed for residential, commercial, and agricultural soil conditioning. It features a working width of 1883 mm (74 in) and weighs 653 kg (1440 lb). The unit utilizes a chain reduction drive system with 444 hardened face tines to pulverize and level soil while collecting debris in an integrated hopper. It is compatible with a wide range of Caterpillar compact equipment, including the 216B3, 226B3, 226D, 232D, 236D, 239D, 242D, 246D, 249D, 257D, 259D, 262D, 272D2, 277D, 279D, 287D, 289D, 297D2, 299D2, 903C2, 906K, 907K, 908K, 906M, 907M, and 908M series machines. The attachment operates with standard flow hydraulics, requiring an optimal flow of 42-86 L/min (11-23 gpm) and pressure of 145-235 bar (2100-3400 psi).

The LR18B replaced earlier landscape rake models in the Caterpillar work tool lineup, offering improved durability through its chain reduction drive and steel tines. It is important in the used and parts market because its broad compatibility with the D Series and K/M Series compact loaders and skid steer loaders ensures high demand for replacement conveyor chains, tines, and hydraulic motors. The quick dumping capability via poppet check valve and bolt-on conveyor tubes allows for cost-effective field repairs, keeping older attachments operational longer than newer proprietary designs.

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 LR18B specifications

Engine

Engine Model	Caterpillar C18 Industrial Diesel Engine
Power Rating Range	429–522 bkW (575–700 bhp) @ 1800–2100 RPM
Displacement	18.1 L
Cylinders	6
Bore	145 mm
Stroke	183 mm
Emissions Tier	Varies by region; includes EPA Tier 3 equivalent and EU Stage IIIA equivalent configurations

Weights

Work Tool Weight

653 kg (1439.6 lb)

Dimensions

Overall Width	1990 mm (78 in)
Working Width	1883 mm (74 in)
Raking Width	1655 mm (65 in)
Overall Height	989 mm (39 in)
Overall Length	1620 mm (63.8 in)
Bucket Capacity (Struck)	0.34 m³ (0.4 yd³)

Performance

Optimal Hydraulic Flow	42–86 L/min (11–23 gpm)
Optimal Hydraulic Pressure	145–235 bar (2100–3400 psi)
Motor Displacement	315 cm³/rev (19.2 in³/rev)
Driven Shaft Speed	165 rpm @ 80 L/min (21 gpm)
Rock Size Range	19–152 mm (0.75–6 in)
Number of Hard Face Tines	444

Service capacities (summary)

Recommended Fluids

Cat DEO or DEO-ULS Diesel Engine Oil; Cat HYDO Advanced Hydraulic Oil; Cat TDTO Transmission Oil

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

Caterpillar LR18B maintenance schedule

Service interval	Tasks
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.
Every 250 h	Change engine oil and filter. Grease all pivot points. Check fluid levels. Perform visual inspection. Service air filter. Check belts and hoses.
Every 500 h	Replace fuel filter. Replace hydraulic return filter. Service battery. Inspect undercarriage in detail. Test coolant. Check all 250-hour items.
Every 1,000 h	Take hydraulic oil sample. Service final drive oil. Inspect turbocharger. Torque ROPS bolts. Measure wear components. Check all 500-hour items.
Every 2,000 h	Change hydraulic oil. Flush coolant system. Service transmission. Perform comprehensive structural inspection. Evaluate major components. Check all 1000-hour items.

Servicing the LR18B beyond the schedule

Predictive Maintenance & Fluid Analysis

Monitor hydraulic fluid condition using S.O.S analysis to detect pump wear metals and water contamination. Check hydraulic oil viscosity and oxidation levels at 1000-hour intervals. Inspect the motor displacement of 315 cm³/rev (19.2 in³/rev) for efficiency loss. Verify the #80H drive chain and #2060H conveyor chain tension to prevent slippage under load. Analyze engine oil for fuel dilution if the host machine runs heavy duty cycles. Track coolant SCA concentration to prevent liner pitting in the host engine.

Corrective & Common Repairs

Replace worn #80H drive chains and #2060H conveyor chains to maintain torque transfer. Swap out broken or bent hardened steel tines to preserve soil pulverization efficiency. Repair or replace bolt-on conveyor tubes when wear exceeds limits. Fix hydraulic leaks at the poppet check valve to restore quick dumping function. Inspect the driven shaft speed (165 rpm @ 80 L/min) for abnormal noise indicating bearing failure. Check hydraulic hose conditions for abrasion against the frame during reverse travel operation.

Overhaul & Rebuild Points

Rebuild the hydraulic motor when displacement efficiency drops below spec or internal wear metals spike. Replace all seals and gaskets during major hydraulic system overhaul. Inspect the chain reduction drive system for gear wear and backlash. Check the 444 tines for excessive wear that compromises rock size range (19-152 mm / 0.75-6 in). Evaluate the hopper bucket structure for fatigue cracks near weld points. Replace the entire tine assembly if more than 20 percent are damaged to ensure balanced load.

Seasonal & Environment Servicing

Clean radiator and oil cooler fins daily in dusty or quarry environments to prevent overheating. Adjust air filter service intervals to 500 hours in high-dust conditions. Use Arctic Platinum Grease in cold weather to ensure pivot point lubrication. Inspect hydraulic hoses for brittleness in extreme cold. Check tire inflation on wheeled host machines for optimal traction during reverse raking. Drain fuel water separator more frequently in humid or wet climates to prevent injector corrosion.

LR18B fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
110-0	Engine Coolant Temperature — Above Normal	Low coolant level, failed thermostat, or blocked radiator.	Check coolant level; inspect for leaks; test thermostat function.
110-3	Engine Coolant Temperature Sensor — Voltage Above Normal	Open circuit in sensor wiring or short to power.	Inspect sensor harness for damage; replace sensor if circuit is intact.
190-8	Engine Speed — Abnormal Frequency	Speed sensor air gap error, sensor failure, or tone ring damage.	Check sensor mounting gap; test sensor resistance and tone ring integrity.
41-3	8-Volt DC Supply — Voltage Above Normal	Short to power on the 8-volt reference circuit.	Disconnect sensors sharing the 8V supply to isolate the shorted component.
41-4	8-Volt DC Supply — Voltage Below Normal	Short to ground on the 8-volt reference circuit.	Disconnect sensors one at a time to locate the grounded circuit.
164-3	Injection Actuation Pressure — Voltage Above Normal	Faulty pressure sensor or open signal circuit.	Check sensor wiring continuity; replace sensor if wiring is good.
100-3	Oil Pressure Sensor — Voltage Above Normal	Open circuit or short to power in the oil pressure sensor circuit.	Inspect wiring harness; verify sensor operation with live data.
102-3	Intake Manifold Pressure Sensor — Voltage Above Normal	Short to power or open circuit in the boost pressure sensor.	Check sensor connector and wiring; replace sensor if necessary.
105-3	Intake Manifold Temperature Sensor — Voltage Above Normal	Short to power or open circuit in the intake air temperature sensor.	Inspect wiring for damage; test sensor resistance.
168-2	ECM Supply Voltage — Intermittent	Loose battery cables, poor ground connection, or failing alternator.	Check battery terminals and ground straps; test charging system output.

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

LR18B attachments & work tools

Landscape Rakes

The LR18B is a Cat® Landscape Rake designed for residential, commercial, and agricultural applications. It utilizes hardened teeth to pulverize, aerate, and level soil while collecting debris in an integrated hopper bucket. The tool is designed for operation with the loader traveling in reverse to minimize tire compaction.

Dimensions and Capacity

The LR18B features a working width of 1883 mm (74.1 in) and a raking width of 1665 mm (65.6 in). The overall width is 1990 mm (78.3 in), with an overall height of 989 mm (38.9 in) and length of 1620 mm (63.8 in). The bucket capacity is 0.34 m³ (0.4 yd³) struck.

Weight and Construction

The attachment weighs 653 kg (1439.6 lb). It includes 444 hard face tines and uses a chain reduction drive system with #80H drive chains and #2060H conveyor chains. Bolt-on conveyor tubes are provided for easy replacement and serviceability.

Hydraulic Requirements

Optimal hydraulic flow is 42-86 L/min (11-23 gpm) with optimal pressure of 145-235 bar (2100-3400 psi). The motor displacement is 315 cm³/rev (19.2 in³/rev), achieving a driven shaft speed of 165 rpm at 80 L/min (21 gpm). Standard flow hydraulics are required.

Coupler and Mounting

The LR18B is compatible with Compact Track Loaders (CTL), Compact Wheel Loaders (CWL), Multi-Terrain Loaders (MTL), and Skid Steer Loaders (SSL). It features an integrated step with metal grating for safety, available on models with a skid steer loader coupler interface.

Operational Features

Quick dumping is accomplished via a poppet check valve that stops flow to the hydraulic motor and directs it to the rake head cylinder. The tool handles rock sizes ranging from 19 mm to 152 mm (0.75-6 in). Machine model availability and attachment options vary by region.

All LR18B assemblies by section

Every catalogued assembly group for the Caterpillar LR18B. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Frame And Body

224-9253 Frame Gp-Landscape Rake

15***87	Bucket As-Landscape Rake	1
15***93	Plate	2
15***11	Pin	4
15***36	Film-Warning; (Read Operation Manual)	1

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224-9250 Frame Gp-Landscape Rake

15***88	Bucket As-Landscape Rake	1
15***93	Plate	2
15***11	Pin	4
15***36	Film-Warning; (Read Operation Manual)	1

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159-5374 Guard Gp-Sprocket

15***26	Screw; (M8x1.25x20-mm)	4
15***74	Guard Group-Sprocket	1
15***75	Cover	1

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Hydraulic System

263-6017 Cylinder Gp-Hydraulic

26***17	Cylinder Group-Hydraulic	1
26***66	Kit-Seal	1
26***07	Bearing-Sleeve	1
3B***89	Fitting-Grease; (Fan And Alternator Drive)	1

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159-5376 Lines Gp-Hydraulic

14***15	Connector As	4
15***94	Coupler As-Quick Disconnect; (Female)(Quick Disconnect)	1
15***95	Fitting As; (Quick Disconnect, Male)	1
15***26	Screw; (M8x1.25x20-mm)	2

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159-5353 Manifold Gp-Control

15***53	Manifold Group-Control	1
15***81	Manifold Group-Control	1
2M***80	Seal--To Connector Pump Outlet	4
3J***07	Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve	2

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159-5381 Manifold Gp-Control

15***81	Manifold Group-Control	1
15***82	Plug-Orifice	1
15***83	Plug As	1
15***84	Valve Group-Relief	1

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159-5399 Mounting Gp-Cylinder

15***20	Washer; (17x56x5-mm Thk)	1
15***13	Pin	1
15***63	Spring	1
15***99	Mounting Group-Cylinder	1

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Service Equipment And Supplies

231-7602 Plate & Film Gp

15***15	Plate-Identification	1
16***89	Tack-Fastener	4
22***30	Film-Warning; (Flying Debris, Stay Back, U.S.)	1
22***69	Film-Warning; (Do Not Operate, Read Omm)	1

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231-7601 Plate & Film Gp

15***15	Plate-Identification	1
16***89	Tack-Fastener	1
22***30	Film-Warning; (Flying Debris, Stay Back, U.S.)	1
22***69	Film-Warning; (Do Not Operate, Read Omm)	1

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Work Tool Arrangement

224-9220 Landscape Rake Ar

15***74	Guard Group-Sprocket	1
15***76	Lines Group-Hydraulic	1
15***99	Mounting Group-Cylinder	1
22***20	Landscape Rake Ar	1

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224-9221 Landscape Rake Ar

15***74	Guard Group-Sprocket	1
15***76	Lines Group-Hydraulic	1
15***99	Mounting Group-Cylinder	1
22***21	Landscape Rake Ar	1

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Work Tools

224-9255 Chain Gp-Conveyor

22***64	Tube As	12
22***55	Chain Group-Conveyor	1
22***68	Chain As	2
6V***87	Locknut; (M12x1.75-Thd)	48

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224-9252 Chain Gp-Conveyor

22***61	Tube As	12
22***52	Chain Group-Conveyor	1
22***68	Chain As	2
6V***87	Locknut; (M12x1.75-Thd)	48

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224-9254 Conveyor Gp-Landscape Rake

15***54	Link As	2
15***91	Cover As	1
15***22	Bearing Group-Conveyor	4
15***24	Bearing Group-Conveyor	2

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224-9251 Conveyor Gp-Landscape Rake

15***54	Link As	2
15***92	Cover As	1
15***22	Bearing Group-Conveyor	4
15***24	Bearing Group-Conveyor	2

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224-9247 Drive Gp-Landscape Rake

01***80	Setscrew-Hex Socket	2
11***54	Shim; (1-mm Thk)(Round)	1
13***93	Key	1
15***52	Sprocket As	1

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Frequently asked questions

What engine does the LR18B use?

The LR18B is a work tool attachment and does not have its own engine. It is powered by the hydraulic system of the host machine, such as the Caterpillar 216B3, 226B3, or 906K series loaders.

What is the operating weight of the LR18B?

The operating weight of the LR18B is 653 kg (1440 lb).

What replaced the LR18B?

The LR18B is part of the Cat Landscape Rake series. It is compatible with and often succeeded by newer models in the PR172, PR184, and PR190 Power Box Rake lines, though the LR18B remains in use with D Series and K/M Series compact equipment.

What LR18B owners discuss

What engine powers the LR18B and what are its typical power ratings?

The LR18B is powered by the Caterpillar C18 industrial diesel engine. Power ratings vary by configuration and series, typically ranging from 429 kW to 522 kW (575 to 700 bhp) at 1800-2100 RPM. Specific variants may operate at a minimum of 429 kW up to 597 kW maximum power at 2000-2100 RPM depending on the model year and application package.

What are the known powertrain and hydraulic behaviors for this work tool?

Hydraulic system performance is sensitive to fluid contamination and temperature. Operators report that low hydraulic oil levels cause cavitation that destroys pumps, while mixing incompatible hydraulic oils (e.g., topping off HYDO Advanced with generic oil) creates sludge that clogs valves. Engine power loss is often linked to airflow restrictions or fuel contamination. Dirty air filters damage turbochargers, and low-quality fuel destroys injectors. Cooling system blockage also leads to premature component overheating.

What undercarriage or wear patterns are typical for this machine type?

As a landscape rake attachment used for pulverizing and leveling soil, the LR18B experiences high wear on its hardened scarifying teeth and hopper bucket. The integrated hopper collects rock and debris, subjecting the structure to abrasive wear. Undercarriage wear on the host machine (typically a compact track loader or wheel loader) is accelerated by heavy, uneven loads generated during raking operations. Regular inspection of the teeth and bucket edges is required to maintain efficiency.

What are the common electrical and sensor issues associated with the C18 engine in this application?

Electrical instability is a frequent issue, 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 check for loose or corroded grounds and damaged wiring. Sensor errors, particularly regarding pressure and temperature, can mimic engine faults; verifying sensor data with diagnostic tools is essential before replacing components.

What are the engine quirks per series regarding turbo and cooling systems?

The C18 engine features two turbochargers. Waste gate issues can cause power loss or inability to reach rated RPM. Intercooler cores can become blocked with salt deposits or debris, leading to performance deterioration, especially as coolant temperatures rise above 70°C. Operators should monitor boost pressure and exhaust backpressure. If performance drops significantly under load, inspecting the intercooler seals and cores for blockage is a critical diagnostic step.

What fluids and specifications should be used for maintenance?

Use Caterpillar DEO or DEO-ULS for engine oil. For hydraulic systems, use Cat HYDO Advanced hydraulic oil. Do not mix different hydraulic oil formulations; cross-contamination above 10% can cause chemical reactions that damage pumps and valves. For transmission and torque converter, use TDTO fluid. Coolant must be maintained at proper levels to prevent overheating and corrosion. Oil analysis should monitor for water (keep below 0.5%), fuel dilution, and silicon (dirt) content.

What to check when buying a used LR18B?

Verify the host machine's serial range compatibility (e.g., 216B3, 226B3, 236D, 246D, 272D2, 299D2 series). Inspect the LR18B teeth for excessive wear or breakage. Check the hopper bucket for structural cracks or excessive abrasion. Test the host machine's hydraulic flow and pressure to ensure they meet the rake's requirements. Verify the C18 engine's waste gates, intercoolers, and turbochargers for proper operation. Check for electrical faults, moisture in connectors, and battery health. Confirm the machine's operating weight fits transport and jobsite limits.

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

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