John Deere 8770 Tractor Parts

8770 parts and accessories

The John Deere 8770, manufactured from 1992 to 1994, was a powerful articulated four-wheel drive tractor known for its robust performance. Powered by a 250 horsepower John Deere diesel engine and boasting a PTO horsepower of around 215, the 8770 quickly became a favorite among farmers needing reliable power for demanding tillage operations and large-scale planting.

The John Deere 8770 was introduced in 1992 as part of the '70 Series' of four-wheel drive tractors, replacing earlier models and offering improved features and performance. Production continued until 1994. It features a John Deere 6-cylinder diesel engine, rated at approximately 250 horsepower with a displacement of 7.6 liters (466 cubic inches). These models came equipped with a 12-speed manual powershift transmission, providing a good range of speeds for various field operations. The PTO horsepower is rated around 215 HP at 1000 RPM. Hydraulic capacity is around 40 GPM with typically 3 or 4 remote valves. While it doesn't have a 3-point hitch from the factory, aftermarket conversions are sometimes fitted. The 8770 was primarily used for heavy tillage such as plowing, disking, and cultivating large fields, as well as pulling large planters and air seeders. Compared to smaller models in the John Deere lineup, the 8770 offered significantly more power and pulling capacity, making it suitable for large-acreage farms.

Specifications

Engine	John Deere 7.6L 6-cyl Diesel, 250 HP
PTO HP	215 HP @ 1000 RPM
Transmission	Powershift, 12-speed
Hydraulics	40 GPM, 3-4 remotes
3-Point Hitch	Category III (Aftermarket)
Fuel Capacity	158 gallons
Weight	24,150 lbs
Years Produced	1992-1994

Maintenance Tips

Change the engine oil and filter every 250 hours of operation, using a high-quality oil that meets John Deere's specifications.
Regularly inspect and maintain the hydraulic system, checking for leaks and changing the hydraulic fluid and filters according to the manufacturer's recommendations (typically every 1000-1200 hours).
Ensure the fuel system is clean and free of contaminants by using quality fuel filters and additives, especially during seasonal storage.
Before storing the tractor for an extended period, stabilize the fuel, lubricate all grease fittings, and protect the tires from prolonged sun exposure.

History & Background

The John Deere 8770 was a key model in the 1990s lineup of John Deere four-wheel drive tractors. It represented an evolution in power and technology for the time. While its production run was relatively short, it established a reputation for reliability and power in demanding agricultural applications.

Frequently Asked Questions

What engine is in the John Deere 8770?

The John Deere 8770 is powered by a John Deere 7.6L 6-cylinder diesel engine, producing approximately 250 horsepower.

What is the PTO horsepower on a 8770?

The PTO horsepower rating for the John Deere 8770 is around 215 horsepower, operating at 1000 RPM.

What oil filter fits the 8770?

A common oil filter for the John Deere 8770 is the John Deere AR51703. Cross-references include Baldwin BD103, Wix 51793, and Fleetguard LF3349.

What are common parts needed for the 8770?

Common parts needed for the John Deere 8770 include engine oil filters, fuel filters, hydraulic filters, fan belts, hydraulic seals, steering cylinder repair kits, and clutch components.

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