🏷️ Basic Information

Make:

David Brown

Model:

850 Implematic, 850 Implematic Livedrive, 950 Implematic, 950 Implematic Livedrive

Model Variant:

Standard and Livedrive Transmission

850 Implematic Serial Number Range:

2B/850/30 001 To 306 350

850 Implematic Livedrive Serial Number Range:

2A/850/30 001 To 306 350

950 Implematic Serial Number Range:

W/950/63 001 To 81 850

950 Implematic Livedrive Serial Number Range:

V/950/63 001 To 81 850

👋 Introduction

Target User:

Owners, mechanics, and technicians working on David Brown 850 and 950 Implematic tractors.

Value Proposition:

Provides essential, in-depth technical information to perform repairs and maintenance, saving on professional service costs and preserving vehicle condition.

Instructional Style:

Step-by-step instructions with detailed exploded diagrams for clarity and efficient repair.

Accessibility:

Instant download for immediate access on various digital devices (PC, Mac, tablet, smartphone).

📋 Manual Details

Primary Systems Covered:

Implematic Hydraulic System

Specific Components Covered:

Control Valve Assembly, Hydraulic Pump Unit, Top Link & Control Cable, Ram Cylinder & Ramshaft, Automatic Hold Mechanism, Three-way Valve Unit

Procedural Coverage:

Operation, Fault Finding, Adjustments, Setting Instructions, Dimensional Data, Summary of Design Changes

Estimated Page Count:

Not Specified (Comprehensive detail implied)

Manual Type:

Workshop Service & Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Hydraulic System Details:

In-depth coverage of the David Brown Implematic hydraulic system, including its unique operational principles and components.

Fault Diagnosis And Repair:

Detailed procedures for identifying and rectifying faults within the Implematic hydraulic system.

Adjustment And Setting:

Step-by-step instructions for all necessary adjustments and settings of hydraulic components to ensure optimal performance.

Diagnostic Capabilities:

Advanced troubleshooting and diagnostic techniques specific to the Implematic system.

Rebuild Procedures:

Comprehensive guidance for the disassembly, inspection, repair, and reassembly of hydraulic pump, control valve, and ram assemblies.

Component Understanding:

Detailed explanations of the function and interaction of each component within the Implematic system, including the automatic hold mechanism.

📊 Manual Specifications

Digital File Type:

PDF

Printability:

High-quality, printable for hard copy reference.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Diesel (Specific engine details not provided in product info, but typically inline diesel for these models)

Horsepower Range:

Typically in the 30-50 HP range for 850/950 models, exact figures depend on specific engine variant.

Fuel Type:

Diesel

🔧 Transmission

Transmission Type:

Implematic (Hydraulic power shift transmission)

Transmission Variant:

Livedrive (indicating a specific variation of the Implematic system or a dual-clutch setup for PTO operation)

Implematic System Function:

A key feature of these tractors, providing variable speed control and hydraulic power management.

📐 Dimensions

Wheelbase:

Not specified in product info, but typical for tractors of this era.

Operating Weight:

Not specified in product info, but generally around 3500-4500 lbs depending on configuration.

🛡️ Safety Features

Safety Standards Adherence:

Manual assists in maintaining safety through proper operation and repair of hydraulic systems, critical for tractor stability and control.

💡 Technology Features

Infotainment Systems:

N/A (This is a tractor from the mid-20th century, no electronic infotainment systems).

Driver Assistance Features:

N/A (Focus is on the hydraulic control system which acts as a form of implement assistance).

Connectivity Options:

N/A

🔧 Maintenance

Hydraulic Fluid Change:

Specific intervals not provided, but regular checking and changing of hydraulic fluid is critical for Implematic system longevity. Typically recommended annually or after a set number of operating hours (e.g., 500-1000 hours).

Hydraulic Fluid Type:

The manual will specify the correct hydraulic oil type and viscosity (likely a premium tractor hydraulic fluid like UTF - Universal Tractor Transmission Oil, or a specific mineral oil as per original specifications).

Hydraulic System Capacity:

Capacity details for the Implematic hydraulic system will be provided in the manual.

Implematic Wear Points:

Common wear areas include hydraulic pump seals, control valve spools, and ram cylinder seals. The manual addresses diagnosis and repair for these.

Potential Failures:

Leakage, loss of hydraulic pressure, inconsistent lift/lower operation, or control valve sticking can occur due to wear or contamination. The manual provides troubleshooting for these.

📚 Vehicle History

Manufacturer Origin:

United Kingdom (David Brown Tractors Ltd.)

Implematic Introduction:

The Implematic system was a significant innovation in tractor hydraulics, offering advanced control for its time.

Production Era:

The 850 and 950 models were produced from the late 1950s into the 1960s, with refinements over their production life.

🏆 Awards & Recognition

Implematic Innovation:

The Implematic system itself was a technologically advanced feature for its time, recognized for improving tractor usability and implement control.