John Deere 8320RT 8345RT 8370RT 8RT Tractors Diagnosis and Tests Manual TM119219

TM119219 is the diagnostic manual for the 8RT track tractors in one serial range, and it includes the full electrical wiring diagrams. On a tractor with this many electronic systems, those diagrams are what let you trace a fault to the wire instead of guessing.

Fits

John Deere 8320RT, 8345RT and 8370RT, serial 912001 through 916999. TM119219, 13OCT15, John Deere Agriculture.

What this manual covers

It opens with Section 210 general information, then diagnostic procedures for the engine, the electrical system with wiring diagrams and component tests, hydraulics with pressure tests, and the power train, including the transmission and track drive. Each path runs through specific checks with clear pass or fail results that point to the next step. Each test lists the reading you should expect, and the wiring diagrams show connector and wire identification, so you can check a circuit with a meter instead of swapping modules. That matters on a machine this expensive, where downtime in the season costs real money. Hydraulic pressure tests show where to connect gauges and what each circuit should read.

Who this manual is for

Farm mechanics and dealers chasing electrical, hydraulic or driveline faults on these track tractors, especially intermittent electrical problems.

Table of contents

• Section 210 - General Information
• Engine Diagnostics - Diagnostic trees and test procedures
• Electrical Diagnostics - Wiring diagrams and component diagnostic trees
• Hydraulics Diagnostics - Pressure tests and troubleshooting
• Power Train Diagnostics - Transmission and track drive diagnostic procedures

Check before you buy

Serial range 912001-916999 only. Repairs for the same tractors are in TM119319, also in our catalog. Your serial number is on the tractor's plate. If it's outside 912001-916999, you'll need a different edition of the diagnostic manual.

PDF, English. You get the download link right after checkout. Sold by an independent seller, not affiliated with or endorsed by John Deere.