John Deere 8120 8220 8320 8420 8520 Tractor Repair Service Manual

John Deere 8120 8220 8320 8420 8520 Tractor Repair Service Manual

This is the John Deere 8120 8220 8320 8420 8520 Tractor Repair Service Manual, as a PDF. It runs to 1,012 pages in 16 parts.

It covers the John Deere 8120, 8220, 8320, 8420 and 8520 tractors. It is John Deere's own service manual, the documentation the dealer workshops repair these machines with.

About the John Deere 8120 tractor

A tractor manual covers the whole machine: engine, clutch and transmission, rear axle and PTO, the hydraulic lift, steering, front axle and electrics. These are the systems a farm workshop works on most.

What is inside

Its chapters cover the engine, the fuel system, cooling, the transmission and drivetrain, axles and final drives, brakes, the electrical system and steering. The largest sections are Section 58 (184 pages), Section 56 (144 pages) and Section 50 (116 pages).

• General Information
• Section 10 (20 pages)
• Engine
• Section 20 (16 pages)
• Fuel and Cooling Systems
• Section 30 (29 pages)
• Electrical
• Section 40 (113 pages)
• Power Shift Transmission
• Section 50 (116 pages)
• Drive Systems
• Section 56 (144 pages)
• MFWD Axles
• Section 57 (104 pages)
• Section 58 (184 pages)
• Steering and Brakes

What you can do with it

• Find the cause of a fault before replacing parts
• Remove, overhaul and refit major components
• Set pressures, clearances and adjustments to the factory values
• Use the right torque values and tightening sequences
• Read the wiring and hydraulic diagrams when tracing a problem

Who it is for

Farmers who repair their own equipment, farm workshops, independent agricultural mechanics and dealers.

Make sure it is your machine

Check the model and serial number on your machine before ordering. Some manuals only cover a range of serial numbers.

Questions about this manual

Which machines does this manual cover?
The John Deere 8120, 8220, 8320, 8420, 8520. If your machine has a different model number, look for the manual for that model.

Is it the original manufacturer manual?
Yes. It is John Deere's own service manual, not a third-party reprint or a summary.

How many pages does it have?
1,012 pages, in 16 parts listed above.

How do I receive it?
It is a PDF. After payment it is available to download from your account, and you can read it on a computer, tablet or phone or print the pages you need. No printed book is shipped.