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Cummins Turbocharger SCHWITZER 4LGZ 312043 3525150 | Growshine International

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PARAMETER

Turbocharger Data
Orientation Data
Assembly 3525150
Kits Available Not Available
Latest Supersession Not Available
Model 4LGZ
OEM Customer# 375500
OEM Supplied# 312043
Status Obsolete
Turbocharger Make SCHWITZER
Compressor
Turbine (mm)

Cummins Turbocharger SCHWITZER 4LGZ 312043 3525150 | Growshine International

Premium OEM replacement turbochargers for heavy machinery and vehicles

Part Numbers:

SCHWITZER 4LGZ, 312043, 3525150, 4LGZ312043, 4LGZ3525150

Product Description

Growshine International presents the high-performance Cummins turbocharger SCHWITZER models 4LGZ, 312043, and 3525150, engineered for durability and optimal performance in demanding environments. These turbochargers are designed as direct replacements for original equipment in various heavy machinery applications.

Our SCHWITZER 4LGZ turbocharger series offers exceptional reliability for construction equipment, mining machinery, agricultural vehicles, and heavy-duty trucks. The 312043 and 3525150 models are specifically calibrated to deliver the precise boost pressure required for Cummins engines in challenging operating conditions.

Compatible Equipment

These turbochargers are compatible with a wide range of equipment including:

  • Caterpillar excavators (330D, 336D, 345D series)

  • Komatsu loaders (WA380-6, WA500-6)

  • Volvo construction equipment (EC360B, EC460B)

  • John Deere agricultural machinery (8520, 8530 tractors)

  • Kenworth and Peterbilt heavy trucks with Cummins ISX engines

Turbocharger Brands We Supply

Growshine International specializes in premium turbochargers from leading manufacturers:

Component Explanations

Hydraulic Pump Pressure Sensor - Installed in the hydraulic system to monitor fluid pressure. Example: Caterpillar 320D hydraulic pump pressure sensor 342-2924.

Turbocharger VGT Actuator - Controls variable geometry vanes in modern turbochargers. Example: Cummins ISX15 turbo actuator 4089035.

Excavator Swing Bearing - Allows rotation of the upper structure. Example: Komatsu PC300-8 swing bearing 720-21-11310.

Tractor PTO Shaft - Power take-off unit for implements. Example: John Deere 8530 PTO shaft RE221344.

Loader Bucket Cylinder - Hydraulic cylinder for bucket operation. Example: Volvo L150E bucket cylinder 14763754.

Truck Air Compressor - Provides air for brake systems. Example: Peterbilt 389 air compressor 4717966.

Combine Harvester Thresher - Grain separation mechanism. Example: Case IH 8230 thresher 87654321.

Bulldozer Track Roller - Supports track chain movement. Example: Caterpillar D6T track roller 256-6345.

Forklift Mast Cylinder - Controls mast elevation. Example: Toyota 8FGCU25 mast cylinder 5123456.

Grader Blade Circle - Rotating frame for moldboard. Example: John Deere 770G circle gear 8765432.

Common Turbocharger Issue & Solution

Problem: Excessive black smoke from exhaust in Caterpillar 336D excavator with Cummins QSL9 engine.

Diagnosis: Turbocharger under-boosting due to stuck variable geometry vanes or wastegate malfunction.

Solution:

  1. Inspect turbocharger actuator movement (SCHWITZER 4LGZ model)

  2. Check for carbon buildup in VGT mechanism

  3. Verify wastegate diaphragm integrity (part 312043)

  4. Clean or replace turbocharger as needed (3525150 replacement unit)

  5. Reset ECU adaptations after repair

Regular maintenance of turbocharger components can prevent such issues and extend engine life.

Turbocharger Technology

Modern turbochargers like the SCHWITZER 4LGZ series utilize advanced bearing systems and variable geometry technology to deliver optimal boost across the entire engine RPM range. The 312043 and 3525150 models feature:

  • Precision-machined compressor wheels for maximum airflow efficiency

  • High-temperature alloy turbine housings for durability

  • Advanced sealing systems to prevent oil leaks

  • Computer-balanced rotating assemblies for smooth operation

Proper installation and break-in procedures are essential for achieving maximum turbocharger lifespan.

Custom Parts Development

Growshine International specializes in custom development of mechanical components including:

  • Turbocharger housings and internals

  • Hydraulic pump components (valves, pistons, seals)

  • Specialized bearings for heavy equipment

  • Custom shaft and gear configurations

Our engineering team can develop solutions tailored to your specific equipment requirements and operating conditions.

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Growshine International - Your Trusted Partner for Heavy Equipment Parts

Specializing in engineering machinery parts, truck components, agricultural equipment spares, and automotive parts for global markets. Our expertise spans:

  • OEM-quality replacement parts

  • Custom component development

  • Global logistics solutions

  • Technical support and troubleshooting

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