Case IH 115 Maxxum, 125 Maxxum, 135 Maxxum, 145 Maxxum, 150 Maxxum Cvx Tractor Pdf Service Repair Manual

Case IH 115 Maxxum, 125 Maxxum, 135 Maxxum, 145 Maxxum, 150 Maxxum CVX Tractor PDF Service Repair Manual (Tier 4B Final 2020) (51666728) (NA)

The Case IH 115, 125, 135, 145, 150 Maxxum CVX Tractor PDF Service Repair Manual (Tier 4B Final 2020 – Publication No. 51666728 NA) is a professional workshop guide created specifically for technicians working on the later-generation Maxxum CVX tractors equipped with advanced electronic controls, emission technology, and continuously variable transmission systems. These tractors are designed for demanding agricultural operations where precision control, hydraulic performance, and dependable power delivery are essential.

This factory-style repair resource provides complete technical information for CVX transmission service, hydraulic testing, electronic troubleshooting, fault diagnosis, controller calibration, drivetrain repairs, component removal, installation, inspection procedures, and system adjustments. It allows service professionals to diagnose issues correctly and maintain these machines according to proper workshop standards.

Case IH Maxxum CVX Tier 4B Final Tractor Information

The Maxxum CVX 115, 125, 135, 145, and 150 models are premium utility tractors built for operators who need flexibility across multiple applications. These machines are commonly used in livestock operations, hay production, loader work, cultivation, transport, spraying support, and general field operations.

The Tier 4B Final generation uses advanced engine management and emission technology combined with the CVX continuously variable transmission. This design provides smooth acceleration, efficient power transfer, and precise speed control for tasks where constant ground speed and operator comfort are important.

Case IH Maxxum CVX 115 125 135 145 150 Technical Specifications

Specification	Machine Details
Manufacturer	Case IH
Models Covered	Maxxum 115 CVX, 125 CVX, 135 CVX, 145 CVX, 150 CVX
Series	Maxxum CVX Series
Emission Generation	Tier 4B Final
Model Year Reference	2020 Series Coverage
Machine Category	Premium Multi-Purpose Agricultural Tractor
Power Range	Approx. 115 HP – 150 HP Class
Engine Platform	Turbocharged Diesel Engine With Electronic Management
Emission Technology	Tier 4B Aftertreatment System Configuration
Transmission	CVX Continuously Variable Transmission
Transmission Control	Electronic Stepless Speed Management
Hydraulic System	Load-Sensing High Capacity Hydraulic System
Drive Configuration	Mechanical Front Drive Tractor Configuration
Operator System	Electronic Display, Controls & Tractor Management Functions
Working Applications	Baling, Loader Operation, Transport, Field Preparation & PTO Equipment

Complete Manual Specification & Technical Contents

Manual Information	Details
Manual Type	Factory Workshop Service Repair Manual
Publication Number	51666728
Region Version	NA (North America)
Covered Equipment	Case IH Maxxum 115, 125, 135, 145, 150 CVX Tractors
Emission Version Coverage	Tier 4B Final Models
Document Purpose	Diagnosis, Repair, Testing, Calibration & Technical Service
Engine Service Coverage	Fuel System, Cooling Circuit, Air Intake, Lubrication & Emission Components
CVX Transmission Section	Drive Control Diagnosis, Calibration, Testing, Adjustment & Transmission Repair
Hydraulic System Section	Pumps, Hydraulic Circuits, Remote Valves, Hitch Control, Steering & Pressure Tests
Electrical Diagnostics	Wiring Systems, Sensors, Switches, Control Modules & Electronic Testing
Fault Diagnosis Information	Troubleshooting Procedures, System Checks & Failure Analysis
Powertrain Systems	PTO Drive, Front Axle, Rear Axle, Differential & Final Drive Service
Operator Area Coverage	Cab Controls, Instrument Displays, HVAC System & Electronic Interfaces
Steering / Brake Systems	Hydraulic Steering Components, Brake Testing & Adjustment Procedures
Service Operations	Component Removal, Installation, Inspection & Adjustment Procedures
Technical References	System Diagrams, Component Locations & Workshop Illustrations
File Format	PDF Digital Download
Search Function	Searchable PDF Text For Quick Information Lookup
Device Compatibility	Windows, Mac, iPhone, iPad, Android Devices & PDF Readers
Internet Requirement	No Internet Needed After Download
Customer Support	24/7 Live Customer Chat Support Available

Real Workshop Repair Support

The Tier 4B Final Maxxum CVX tractors use a combination of mechanical components, hydraulic circuits, and electronic control systems. Accurate service data is important because performance issues may require electrical testing, calibration checks, or hydraulic measurements before repairs are performed.

• CVX Transmission Diagnostics: Troubleshoot drive response concerns, electronic controls, calibration settings, and transmission operation issues.
• Tier 4B Engine Systems: Service fuel delivery, cooling systems, intake components, emission-related systems, and supporting engine equipment.
• Hydraulic Troubleshooting: Test hydraulic pressure, diagnose pump performance, inspect steering circuits, remote valves, and hitch functions.
• Electrical Control Testing: Check wiring circuits, controllers, sensors, switches, displays, and electronic communication systems.
• Drivetrain Maintenance: Inspect PTO operation, axles, final drives, brakes, steering components, and power transfer systems.
• Operator Station Repairs: Maintain cab controls, displays, HVAC equipment, and operator interface components.

Professional Maintenance Reference

Modern Maxxum CVX tractors require accurate diagnostic information to protect expensive electronic and hydraulic systems. This manual gives workshops and equipment owners access to structured repair procedures that help reduce downtime and improve service accuracy.

It is designed for agricultural technicians, independent repair shops, fleet maintenance teams, and experienced operators performing advanced tractor repairs.

Instant PDF Download Access

Receive immediate access after purchase and save the PDF permanently on your preferred device. The manual can be viewed offline in the workshop, field, or farm whenever repair information is required.

Includes 24/7 live customer chat support for download assistance.

Frequently Asked Questions

What models are included in this manual?

This manual covers Case IH Maxxum 115, 125, 135, 145, and 150 CVX Tier 4B Final tractors.

Is publication number 51666728 covered?

Yes. This PDF corresponds to Service Repair Manual publication number 51666728 (NA version).

Does this include CVX transmission service information?

Yes. CVX transmission diagnostics, calibration, testing, and service procedures are included.

Can this manual help diagnose electronic faults?

Yes. It includes electrical troubleshooting information for controllers, wiring, sensors, and electronic systems.

Does the PDF include hydraulic repair information?

Yes. Hydraulic testing procedures, system checks, and component service information are provided.

Can I search inside the manual?

Yes. The PDF format allows quick searching for technical information using compatible PDF reader software.

Can I use the manual offline?

Yes. After downloading, the file can be opened anytime without an internet connection.