Hy-Gard transmission and hydraulic oil is a unique oil developed by John Deere engineers to meet the exact needs of John Deere machines. Hy-Gard viscosity places it between ISO 46 and 68 grades. Both Hy-Gard fluids are multi-viscosity fluids with high-viscosity index. 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. |
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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 systems. |
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. |
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, lets 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. |
Hy-Gard may be used when the following oils are specified | |
AGCO Massey Ferguson: |
M-1135, M-1141, M1143, M-1139 |
AGCO White Farm: |
Q-1722, Q-1766, Q-1766B, Q-1802, Q-1826 |
Allis-Chalmers, Deutz-Allis, AGCO-Allis: |
Power Fluid 821XL |
Case: |
MS-1207, MS-1209, MS-1210 |
Caterpillar: |
TO-2 |
Clark: |
MS-68 |
John Deere: |
All Weather Hydrostatic Fluid (JDMJ21A) |
Deutz: |
Transmission-Hydraulic Fluid |
Dresser: |
Transmission-Hydraulic Fluid (HMS B806-0002) |
Eaton Hydraulics Div: |
Hyd. Transmission (Form 3-401-123) |
Ford/New Holland: |
ESN-M2C41-B, M2C134-D, M2C48-B, M2C48-C, M2C86-C, FNHA-2C-200, FNHA-2C-201 |
IHC: |
B-6 |
Kubota: |
UDT Hydraulic/Transmission Fluid |
Oliver: |
Type 55 |
Sundstrand: |
Hydrostatic Transmission |
Zetor: |
OT-H, GL-4 |
ZF: |
Te-ML03E, 06D, 06E |