John Deere 70D Excavator Operation and Test Technical Manual (TM1407)

John Deere 70D Excavator Operation and Test Technical Manual (TM1407 Dec87)

This official technical manual provides detailed diagnostic, operational, and testing procedures for the John Deere 70D Excavator. It includes troubleshooting methods for the engine, electrical system, power train, and hydraulics, along with system performance evaluations to ensure efficient excavator operation.

File Format: PDF

Size: 29.15 MB

No. of pages: 304

Language: English

Delivery Method: Instant Download – Access your file immediately after purchase.

📑 Table of Contents Overview:

Operational Checkout Procedure

• Step-by-step operational checks
• Hydraulic and electrical system function tests

Engine Operation and Testing

• Theory of engine operation
• System performance evaluations
• Diagnostic troubleshooting for engine malfunctions
• Engine parameter adjustments
• Performance tests and inspections

Electrical System Operation and Testing

• System operation and wiring schematics
• Electrical system troubleshooting
• Battery, alternator, and starter motor diagnostics
• Electrical component testing

Power Train Operation and Testing

• Theory of power train operation
• Gearbox and propel motor diagnostics
• Track adjustment and travel speed checks
• Clutch and transmission system function tests

Hydraulic System Operation and Testing

• Hydraulic system operation and theory
• Pilot control and main valve adjustments
• Hydraulic pump performance evaluation
• Leak detection and hydraulic cylinder troubleshooting

This John Deere 70D Excavator Operation and Test Technical Manual is an essential resource for technicians, mechanics, and equipment operators, providing comprehensive diagnostics, troubleshooting, and system testing procedures to maintain peak excavator performance.