1978 John Deere JD300-B Loader & Backhoe Technical Service Manual TM-1087

John Deere JD300-B troubleshooting and repair reference manual covering engine, power train, electrical system, hydraulics, and more. Part number TM-1087.

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Document Details

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Document Number / Seller:
28801 / Carol Lee
File Size:
69.06 MB
File Type:
PDF
Language:
English
Pages:
596
Printable:
Yes
Category:
Loader
Last updated / verified
Mar 23, 2025

Models Covered & Key Technical Specifications

John Deere JD300-B Loader & Backhoe Technical Service Manual (TM-1087) - 1978 John Deere JD300-B Troubleshooting & Repair Manual | Engine, Power Train, Electrical, Hydraulics Sourcebook.

  • General Specifications: Provides detailed measurements and performance data for the JD300-B.
  • Engine Details: Covers engine removal, installation, and component specifications for optimal operation.
  • Power Train Systems: Includes clutch assemblies, transmission, differential, and brake information for reliable performance.
  • Electrical System: Documents battery, charging, starting, ignition, and gauge systems for full electrical coverage.
  • Hydraulic System: Details pump, cylinder, and valve specifications for complete hydraulic system documentation.
  • Maintenance Procedures: Outlines essential maintenance and service tasks for sustained operational efficiency.

Manual Description & Preview

John Deere JD300-B Loader & Backhoe Technical Service Manual: 1978 - Precision Loader & Backhoe Repair Guide Chassis-Documentation

Maintenance-Category: Engine & Drivetrain | Serial-Range: N/A | Model-Designation: JD300-B Carefully mandating service procedures, this comprehensive manual details the configuration and operation of the John Deere JD300-B.

PERFORMANCE-ELEMENT PARAMETERS CALIBRATION-DATA Engine Horsepower 46 hp (Gross) 34.3 kW (Net) Hydraulic System Pressure 2350 psi 16203 kPa Fuel Tank Capacity 19.5 gal 73.8 L Transmission Speeds 8 Forward / 8 Reverse Breakout Force 5,000 lb 22.41 kN Loader Lift Capacity 3,300 lb 1500 kg

Maintenance hierarchies are structured into distinct sections for clarity: Engine, Power Train, Electrical System, Hydraulic System, Fuel System, Ignition System, Gauges and Switches, Starting System, and Air Intake System. The manual includes an introduction to the twin concept of service (FOS Manuals for reference and Technical Manuals for actual service). A detailed table of contents provides an overview of all groups and sections, covering everything from general specifications and engine lubrication to specific component testing and troubleshooting.

This manual documents torque specifications for engine-to-clutch housing cap screws (170 lb-ft) to ensure proper structural alignment prevention.

FAQ

What values are **calibrated** for the hydraulic system architecture? keyboard_arrow_down

2350 psi (16203 kPa) is the maximum pressure for the hydraulic system, ensuring robust operational capacity.

Assess the **applicable** tool requirements for engine removal. keyboard_arrow_down

Tools such as JDG-1 or JDG-23 Engine Lifting Sling, D01043AA Load Positioning Sling, and support stands like JDG-2K are required for safe engine removal.

What components require **exact** electrical values for the starting system? keyboard_arrow_down

Solenoid "R" terminal contact height is specified as 1/16 to 3/32 inch (0.792 to 2.373 mm) for proper operation.

Confirm the **specific** calibration settings for the distributor. keyboard_arrow_down

Cam angle should be 96 to 102 degrees, with breaker spring tension at the center of contact ranging from 17 to 22 oz. (465.95 to 623.76 g).

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