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John Deere Hy-Gard Transmission & Hydraulic Oil

John Deere Hy-Gard Transmission & Hydraulic Oil Benefits

Shop John Deere Hy-Gard Transmission & Hydraulic Oil

John Deere Hy-Gard™ HYDRAULIC & TRANSMISSION OIL

Hy-Gard and low-viscosity Hy-Gard transmission and hydraulic oils are unique oils developed by John Deere engineers to meet the exact needs of John Deere machines. Both Hy-Gard fluids are multi-viscosity fluids with high-viscosity index. Low-Viscosity Hy-Gard has an ISO 32 viscosity grade. Hy-Gard viscosity places it between ISO 46 and 68 grades. Both Hy-Gard fluids are multi-viscosity fluids with high-viscosity index. Low-Viscosity Hy-Gard has an ISO 32 viscosity grade. Hy-Gard viscosity places it between ISO 46 and 68 grades. Hy-Gard may be used in many applications specifying either of these grades. Low-Viscosity Hy-Gard has the same performance specifications as Hy-Gard and can be used as a replacement for Hy-Gard in cold weather.

John Deere Hy-Gard is a multi-function hydraulic and transmission oil formulated to protect heavily-loaded gears, wet brakes, wet clutches, and hydraulic systems.

–– Suitable for a wide range of operating conditions
–– Transmissions and differential units with immersed wet brakes
–– Gearboxes with hydraulic brakes
–– Gearboxes with hydraulic drive systems

John Deere Hy-Gard™ Oil Features and Benefits

Performance-tested both in lab and in field and approved by John Deere engineers to meet increased demands for performance and protection of transmissions and hydraulic oils.

A polymeric viscosity improver helps Hy-Gard retain its proper viscosity over a wide range of operating temperatures. For Hy-Gard to work efficiently, it must flow readily through any part of the system. Oil that is too light can cause increased wear; too heavy will cause sluggish operation and lower mechanical efficiency.

Reduces wet-brake chatter, assures high braking capacity.

Superior wet-clutch performance smoothes clutch operation.

High tolerance to water contamination without sludge formation, which could cause filter clogging and hydraulic system malfunction –anti-oxidation capability allows oil to work properly at high temperatures, helping keep transmissions and hydraulic system moving parts clean.

Provides protection against rust and corrosion, particularly during low-use periods.

 Anti-wear additives keep gear and bearing wear to a minimum – extreme pressure film in Hy-Gard helps prevent metal-to-metal contact.

 

John Deere Hy-Gard Applications

The exclusive Hy-Gard formula was designed for use in John Deere equipment; however, it can also be used in many non-John Deere transmission and hydraulic system

Low-Viscosity Hy-Gard is used for factory fill in many machines. Consult the machine’s operator’s manual to determine what machines require low-viscosity Hy-Gard. It also is used as a replacement for Hy-Gard in cold weather applications.

Low-Viscosity Hy-Gard replaces the John Deere All-Weather Hydrostatic Fluid and should be used as a direct replacement for all applications recommending hydrostatic fluid.

Low-Viscosity Hy-Gard is compatible with hydrostatic fluid and can be added to systems, which contain hydrostatic fluid.

 

John Deere Hy-Gard Functions

Because transmission and hydraulic oil must perform many different tasks at the same time, there is very little margin for error. To understand the complexity of transmission/hydraulic oil, let’s review its functions:

·        Prevents wear of high-torque, heavy-loaded gears and bearings.

·        Provides wear and corrosion protection for hydraulic pump.

·        Provides proper friction for wet brakes to give maximum stopping performance with minimum chatter.

·        Provides proper friction for clutches to engage and absorb shock loads without excessive slipping or abrupt shifts.

·        Provides proper friction for brakes to ensure low chatter, long life, and high capacity.

·        Withstands extreme pressures in hydraulic system without breaking down.

·        Prevents the formation of deposits on all internal parts.

·        Prevents foam and water damage to all internal parts.

·        Hy-Gard oil can be used in most applications calling for 10W-30 or 5W-30 engine oil for transmission and hydraulic oils.

Note: Hy-Gard should be used in all applications calling for JDM J20C.

·        Low-Viscosity Hy-Gard should be used in all applications calling for JDM J20D.

·        Low-Viscosity Hy-Gard and Hy-Gard are compatible with hydrostatic oil and can be added to systems that contain hydrostatic oil.

John Deere does not monitor competitive or “will-fit” oils. While claiming to meet John Deere requirements, it is possible that the competitive or “will-fit” oils do not meet even the minimum performance requirements for John Deere machines, which could result in premature failures. Note: An industry classification for hydraulic/transmission oil does not exist. Each manufacturer establishes a minimum requirement that oils should meet for use in their equipment. John Deere has established a JDM J20 specification for minimum tractor performance hydraulic fluid. John Deere Hy-Gard and John Deere Low-Viscosity Hy-Gard exceed the performance of their JDM-J20 specification counterparts. 

The performance requirements for Hy-Gard are higher and many more performance tests are mandatory.

John Deere Hy-Gard™ Oil Specifications

SAE 10W-30, ISO 46-68, JDM J20C, JDQ 95 WEAR TEST

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