With great TLS suspension, 310° cab visibility and “DieselOnly” PowerTech Plus engine that meets Stage III B emission standards all by itself, the 6125M is the tractor that makes you achieve more.
The hood tilts opens wide allowing unencumbered engine compartment access. An easy-reach tether cord allows access to effortlessly close the hood. Overriding the two gas struts permits the hooding up to 90 degrees. Unhooking the tether from the radiator support allows the operator to open the hood even further to provide better access for servicing the under hood components.
The tilt-up hood provides easy access from the ground to:
Vertical engine oil and fuel filters minimize spilling for cleaner and faster changes. 500-hour service intervals (when using John Deere Torq-Gard™ oil or Plus-50™ lubricant and filter) for engine oil and filter, fuel filter, and cab air filter reduce maintenance costs over the life of the tractor.
Two engine fuel filters provide the needed protection for the fuel system:
Blowing out the radiator is easy and convenient with the 6D Series Tractors equipped with an in-base, tiltable radiator assembly. Open the hood to clean out the radiator, fan, and cooling package. The condenser can be tilted for better access.
The coolant recovery tank, located behind the air filter, is easily accessible from the ground.
The engine air filter is located under the front of the hood above the radiator. Undoing the quick-attach fastener allows for fast and easy servicing - no tools required. The Power Core air filter removes more than 93 percent of foreign material before it reaches the filter element.
The cab air quality system is comprised of two fresh air cab filters. A filter is located on the bottom side of the left and right side cab roof is easily accessible by removing two wing screws and removing a sealed cover plate.
Open the hood to access the battery. No tools are needed.
Instead of using a dipstick, the transmission/hydraulic oil level is checked with a sight glass on the left side of the rear axle housing on 6D Series Tractors.
The windshield washer tank is conveniently located at the right rear of the cab for easy refilling. This would be the same washer fluid tank for the rear window wiper when ordered as a field-installed kit.
Transmission/hydraulic oil filter is conveniently located and designed to save the operator service time and reduce maintenance costs.
Easy brake pedal travel adjustment is provided on cab and open operator station (OOS) tractors. Turnbuckle linkage is located at the top side of left and right rear axles.
The tractor model numbers are comprised of four positions. The first number designates the family while the next three numbers represent the approximate engine horsepower. The fifth and sixth positions are represented by a letter. The first letter indicates the level of capability or price a tractor has. Not every tractor will have a second letter. But if it does, the second letter represents a special configuration of the tractor.
The size of the tractor is how large the tractor is compared to other tractors John Deere offers, using the similar sizes of today's product groupings and still sustaining the tradition of the name and numbering legacy. These are referred to as Six Series Tractors. This name and numbering system will not change that. The 6D is similar in size to the 6003 Series.
The second position is the tractor's approximate engine horsepower. The 6100D at 99 engine hp, 6115D at 118 hp, and 6125D at 123 engine hp have been rounded to the nearest 5 hp. John Deere has promoted PTO horsepower for its utility and row-crop tractors and engine horsepower for its four-wheel drive (4WD) tractors. This has led to some confusion in the marketplace. Although promoting PTO horsepower has its benefits, using bare-engine horsepower allows for a more consistent means of promoting tractor horsepower in a global market.
Bare-engine horsepower is measured by running just the bare block engine with the front fan. With bare engine horsepower, John Deere is using the International Organization for Standardization (ISO) 97/68 E-C standard for determining the bare-engine horsepower at rated engine speed, given in metric horsepower, not Society of Automotive Engineers (SAE). This unit of measurement is used globally to describe off-road engines. This will allow John Deere to consistently promote the tractor's approximate horsepower within the model number across all tractors around the world.
The third position is the tractor's capability or price level within its family. In general terms, capability is the specification level of that tractor series, such as the type of engine, transmission, frame, and overall design; all leading to price. The letter D would equal a very basic tractor; M would signify a premium tractor, while the letter R would equal a very premium tractor with many options and features. The higher the letter is in the alphabet the higher the tractor's spec level. If the tractor has a second letter, the second letter represents the configuration of the tractor. For example, H will designate high-crop and V will designate a vineyard design.
Another important part of the name and number system is the way that these tractor models are pronounced. The former system would have said sixty-one-forty-D, but since the second, third, and fourth positions are the engine horsepower and not part of the tractor's size, the numbers need to be separated.
The correct way to say this tractor lineup is:
This is a significant change to what has been used in the past, but the value and the solutions of these tractors remain the same.
For operators requiring more field speeds to achieve the most precise operating ranges, four transmission options are now available in the 6D Series.
The 24F/8R TSS Hi-Lo and 24F/12R PowrReverser Plus transmissions offer 24 forward speeds for ultimate in speed selection. Convenient push-button controls actuate the electrohydraulic high/low selector.
The forward lever selects one of three speeds, all synchronized shifts for on-the-go shifting with the use of the clutch. This same lever is where the high/low control buttons are located. The range lever selects ranges A, B, C, or D. Ranges C and D are fully synchronized. That means, when upshifting, operators can move from ranges B to C to D without stopping the tractor. On the downshift, operators can move from D back down to C without stopping.
The Hi/Lo feature benefits operators who frequently transport their tractors from field to field or find themselves in bog-down situations during rear power take-off (PTO) work. Customers can push the rabbit button (high) without having to depress the clutch to get a 20 percent increase in speed. They can also push the turtle button (low) to get a 20 percent decrease in speed, similar to downshifting or engine braking without having to grab another gear. The PowrReverser has a built-in engagement override valve for additional safety. This valve requires the clutch pedal to be depressed one time after each engine start before the transmission will begin to operate normally, giving the operator another opportunity to put all focus on the tractor.
Those selecting the 6D Series PowrReverser transmission are looking for unmatched performance. This transmission is ideal for working in tight areas where forward to reverse shifting is a primary occurrence, such as in barns, feedlots, and loader applications.
The 12F/4R TSS and 12F/12R PowrReverser transmissions offer five well-spaced ground speeds placing the operator in the important field-working range of 4 km/h to 12 km/h (2.5 mph to 7.5 mph). The 24F/8R Hi-Lo and 24F/12R PowrReverser Plus transmission will deliver 10 well-spaced ground speeds to match the correct speed for each application. And, with a top speed of 31.6 km/h (17.6 mph), operators will be able to move fast from application to application—getting more done in less time.
24F/12R PowrReverser Plus transmission includes:
A dash-mounted PowrReverser modulation kit (LVB25727) is available to set the aggressiveness of the forward and reverse shuttle modulation that best fits the application or the operator's comfort level.
Two levers, one for speed and one for range, with the addition of an electrohydraulic left-hand reverser in PowrReverser transmissions, provide operators optimum control and maneuverability.
Forward and reverse speeds
All speed gears (1, 2, 3) are fully synchronized for shifting-on-the-go capabilities, putting less wear on the operator and saving them time in the field. In all 6D transmissions, gears are synchronized for low shifting effort while the operator is doing field or loader work and during transport.
The high and low speeds on the 24F/8R Hi-Lo and the 24F/12R PowrReverser Plus transmissions can be shifted without clutching while the tractor is under load. This makes for quick speed changes when operating in uneven conditions.
The ranges (A, B) are not synchronized. This means the tractor must be stopped for the operator to select the range. However, with operator input, the speeds have been well spaced out to minimize the need to change ranges within applications. The ranges (B to C, C to D, and D to C) are synchronized. That allows the operator to shift ranges on the go in transport and high speed applications like operating a mower-conditioner.
John Deere has led the industry in the innovation of wet clutches. In this wet-clutch design, five 17-cm (6.7-in.) diameter clutch disks provide optimum clutch modulation for smooth operation; the disks are oil-cooled for a lifetime of service.
The biggest advantage of a wet clutch is its ease of use, as the required force to depress the pedal is minimal. Also, with a wet clutch, the need for frequent adjustment and clutch mechanism changeover is eliminated.
12F/4R TSS wet-clutch transmission
12F/12R PowrReverser wet-clutch transmission
24F/8R Hi-Lo wet-clutch transmission
24F/12R PowrReverser Plus wet-clutch transmission
A rollover protective structure (ROPS)-certified, factory-installed cab is available to all operators. The cab provides protection from heat and cold, wind, noise, and offers a climate-controlled environment. The cabs are also assembled to the tractor chassis as a complete unit mounted on composite isolators.
By including the floor and steering column as part of the cab, it significantly reduces noise levels in the cab. It also creates a more sealed environment by reducing airborne particles entering the cab, such as dust, pollen, and other contaminants. The 6D Series Cab Tractors are base equipped with a mechanical cloth seat for standard comfort. For those who will be operating on rough or unstable terrain, an optional air suspension seat is available that gives maximum comfort.
The cab is incredibly spacious, and the flat floor creates a spacious feel. The operator of a 6D Series Cab Tractor will appreciate the reduction in noise and vibration through the seat, steering wheel, and lever controls. By adding the cab to the tractor, the noise level is decreased.
The ceiling control panel is located to the upper right side and the air conditioning components are located on the upper rear corners of the cab, where visibility is not as critical. This provides the operator with visibility to the loader at height unmatched by any competitor. For excellent rear visibility, the fuel tank is located below the left-hand side of the platform.
Designed for operator comfort
For additional operator comfort, the cab is fully insulated and includes:
|Left- and right-hand doors||Two monitor mounting bases|
|Sun visor||Removable rear monitor plug|
|Mechanical cloth seat (optional air)||Radio prep package with antenna cable|
|Air suspended seat||Antenna|
|Cup holder (two)||Two speakers and wiring harness|
|Tilt/telescopic steering column||Internal rear-view mirror, adjustable height|
|Convenience power outlet||Two external fixed rear-view mirrors|
|Power outlet||Basic fender upholstery|
|Front wiper with washer||Door-activated dome light|
|Air conditioning and heater|
Instructional seat option
John Deere 6D Series Tractors feature the reliable and proven 4.5L (276 cu in.) engines in two configurations — the 2-valve John Deere PowerTech and 2-valve PowerTech E.
The 4.5L PowerTech engine, used in the 6100D, 6110D, and 6125D and the 4.5L PowerTech E engine, used in 6100D, 6115D, and 6130D models, are diesel engines that can deliver up to 25 percent torque rise.
|Model||Engine||Emission level||Engine displacement (L)||Rated engine speed (rpm)|
|6100D||PowerTech E||Tier 3||4.5||2100|
|6115D||PowerTech E||Tier 3||4.5||2100|
|6130D||PowerTech E||Tier 3||4.5||2100|
These engines are designed for performance, long life, and low maintenance costs.
These engines provide excellent torque, fuel efficiency and durability. The PowerTech engine was designed to deliver:
John Deere PowerTech and PowerTech E engines are 2-valve engine design. Two engines provide the producer with a choice of technology. This choice permits a selection based on individual operational requirements and performance expectations.
PowerTech, PowerTech E
John Deere diesel engines
Heavy-duty two-wheel drive (2WD) front axle
Mechanical front-wheel drive (MFWD) (optional)
Hydrostatic power steering
Open-center hydraulic system
Joystick control lever
Category 2, 3-point hitch
Top adjustable swinging drawbar
Mechanically actuated wet-disk brakes
Fixed or foldable Roll-Gard™ rollover protective structure (ROPS)
Standard seat for OOS tractors and deluxe seat for cabs
Composite fenders and hood
All 6D Series Tractors feature a gear-driven, open-center (constant-flow) hydraulic system with a maximum pressure of 2830 psi (19,500 kPa).
The tractor incorporates a triple hydraulic pump design. The implement, steering-transmission lubrication systems, and transmission all function separately; all three systems utilize a common reservoir resulting in ease of serviceability. Two selective control valves (SCVs) are in base with a third deluxe valve as optional equipment.
Pressure available when needed
Pressure for entire system is established by function requiring the highest pressure. As demand lessens, so does pump pressure and engine power requirement. Steering section (additional 28.5 L/min [7.5 gpm] in base equipment) provides full power when needed for steering. Transmission section (additional 28.5 L/min [7.5 gpm] in base equipment) provides hydraulic pressure for the power reverser transmission.
The steering and transmission circuit functions return to sump, giving improved system performance and cooling. By returning functions to sump, the system is simplified and provides faster service and increased uptime.
Remote flow rating
|Models||Rated flow||@ engine rpm|
6100D, 6110D, 6115D
|72.3 L/min (19.1 gpm)||2100|
The steering side and transmission side of this pump provides an additional 7.5 gpm (28.5 L/min) respectively.
The 6D Series Tractors feature an independent and now electric 540/1000 rpm PTO as base equipment. For feeding, mixing, baling hay, or any other PTO application, the 6D Series 540/1000 rpm PTO can match up efficiently to any requirement.
An easy-to-use push/pull knob on the right-hand console allows the operator to quickly and smoothly engage and disengage the PTO. If the tractor is stopped or is being downshifted, the PTO rpm levels can be maintained. To engage the PTO, simply pull up on the knob. When the PTO is engaged, a light on the instrument panel illuminates. To disengage the PTO, simply push the knob back down.
Adding to operator safety, the tractor does not start with the PTO lever engaged. An alarm sounds if the operator attempts to leave the seat with the PTO engaged.
NOTE: Operators should disengage PTO before the engine is stopped.
The 6D now offers a PTO wet clutch for a long, reliable lifetime of operation. The wet clutch eliminates the need for frequent adjustment and clutch mechanism changeover.
Operators can easily switch between 540 and 1000 rpm-driven implements simply by removing the stub shaft and reversing its position. The reversible 540/1000 PTO stub shaft is located in a dry cavity to allow changing from 540 to 1000 rpm or vice versa without any oil spillage. Just remove the snap ring to remove the shaft.
Row Crop Tractor
|Rated power (97/68EC), hp (kW)||125 (92)|
|Max power (97/68EC), hp (kW)||132 (97)|
|Rated power (ECE-R24), hp (kW)||118 (87)|
|Max power (ECE-R24), hp (kW)||126 (93)|
|Constant Power range, rpm||2100-1600|
|Torque Reserve, %||35|
|Maximum Torque, Nm (at 1500 engine rpm)||564|
|Rated Speed, rpm||2100|
|John Deere Power Systems / PowerTech E||Manufacturer/Type|
|Aspiration||Variable Geometry Turbocharger with Intercooler and externally cooled Exhaust Gas|
|Cylinders and Displacement cm³||4 / 4.5 L|
|Cooling system||Cooling System with Temperature Controlled Viscous Fan Drive|
|Fuel Injection system & control||High Pressure CommonRail System with up to 2000 bar Injection Pressure|
|PowrReverse||16/16 1.8 - 30 km/h|
|PowrQuad Plus||16/16 2.4 - 30 km/h 16/16 3.2 - 40 km/h 24/24 1.4 - 40 km/h|
|AutoQuad Plus||24/24 1.4 - 40 km/h|
|AutoQuad Plus EcoShift||24/24 1.4 - 40 km/h|
|Creeper (Synchro Plus, PowrReverser, PowrQuad, PowrQuad Plus, AutoQuad Plus and AutoQuad Plus EcoShift)||Yes|
|Suspensions design||Triple Link Suspension (TLS Plus) MFWD Axle, hydro-pneumatic, permanently active, triple link, self levelling suspensions (optional)|
|Suspension range||100 mm suspension range|
|Engagement front differential lock||Self-locking differential|
|Engagement rear differential lock||Electro-hydraulically with oil cooled clutch|
|Rear Axle||Flange Axle|
|Steering||Dynamic Load Sensing, Hydrostatic, Flow Metering|
|Type||Pressure Compensated (PC) / Pressure & Compensated (PFC) System|
|Flow at rated speed base/option, l/min||80/114 (option)|
|Selective control valves (rear/mid)||4r/3m|
|Type||Electronic lower link; load & depth control, infinite mix, float|
|Maximum lift capacity at hooks, kg||4900|
|Lift capacity through full lift range (OECD at the hooks), kg||2700|
|Lift capacity through full lift range (OECD 610 mm), kg||2300|
|Lift capacity through full lift range (OECD 1800 mm), kg (base/option)||1800/2300|
|Type||Front towing hitch controlled by rear SCV, SCV line optional|
|Maximum lift capacity at hooks, kg||4000|
|Maximum lift capacity (OECD 610 mm)||3200|
|Lift capacity through full lift range (OECD at the hooks), kg||3300|
|Lift capacity through full lift range (OECD 610 mm)||2550|
|Type||Electro-hydraulically operated, oil cooled, multi-disc design|
|Engine rpm at rated PTO speeds (540/540E/1000 rear PTO)||1932 / 1575 / 1932|
|Type||Electro-hydraulically operated, oil cooled|
|Engine speed at rated PTO speed (1000), rpm||1995|
|Operator's ear noise level, dBA (Cab)||71|
|Cab Glass Area, m²||4.79|
|Display||Integrated in dashboard|
|ISOBUS Implement Connection||Optional|
|Trailer Brake System||Hydraulic or Pneumatic system optional|
|Air Pressure drier included||Pneumatic trailer brake system|
Product modules and features has been compiled for worldwide circulation with general information, pictures, and descriptions of features not available in all countries. In some countries, products and accessories may require modifications or additions to ensure compliance with local regulations. Contact your local John Deere dealer for details.