John Deere 3038E Compact Tractor

Powerful, diesel engine delivers plenty of power under heavy loads

The 1.568-L (95.68 cu in.) displacement, turbocharged, liquid-cooled 3TNV86T-NJT Yanmar diesel engine provides 27.4 kW (36.7 hp) to the 3038E.

*Engine kW (hp), gross SAE J1995: 27.4 (36.7) at 2500 rpm, PS
Displacement, L (cu in.): 1.568 (95.68)

The engine uses the latest technologies to optimize fuel economy, improve control and accuracy, and reduce environmental impact. The common rail system (CRS) optimizes fuel economy and reduces operating costs*. High-pressure injection atomizes fuel into finer particles which burn more completely. It results in improved fuel economy and a lower cost of operation.

The electronic control unit (ECU) provides optimum fuel control and accuracy. ECU monitors and controls the engine. It continuously monitors engine conditions and adjusts the fuel delivery accordingly to ensure optimum performance and emissions.

The engine comes with an after-treatment system. The system operates automatically. The exhaust filter consists of a diesel particulate filter (DPF) which captures particulate matter (PM) contained in the exhaust gas. Using a natural cleaning process, most of the PM trapped in the exhaust filter is eliminated by the heat of the exhaust stream generated by normal use. In situations of low temperature, engine speed, or load factor, an active cleaning cycle is initiated. In this cleaning cycle, the exhaust gas temperature is raised by injecting additional fuel during the exhaust stroke of normal vehicle operation to the diesel oxidation catalyst (DOC).

After many hours of use, the exhaust filter may require an ash removal service.

*NOTE: As compared to engines not using CRS technology.

DPF cleaning

Depending on the load that the tractor is under, as well as ambient temperature, humidity, and engine speed, the DPF may build up with particulate matter, thus requiring cleaning. Filter cleaning is determined by one of three factors:

• A prescribed time-based estimation of needed filter cleaning
• DOC/DPF pressure sensors
• A particulate matter buildup estimation based on load conditions

Once one of the three conditions has been met, filter cleaning will occur.

There are three different types of filter cleaning processes:

• Passive filter cleaning
• Active filter cleaning
• Parked filter cleaning

Passive filter cleaning

Passive filter cleaning occurs naturally when the engine is generating enough heat to oxidize particulate matter. This automatic process occurs continuously during normal operating conditions. No tractor icons or symbols appear on the display during passive filter cleaning.

NOTE:  Passive filter cleaning requires no operator involvement, and there is no interruption to tractor operation.

Active filter cleaning

If conditions (temperature, load, or speed) for passive filter cleaning cannot be achieved, then PM is removed using active filter cleaner.

To achieve the required conditions, exhaust temperature management (ETM) manages the initiation and duration of active filter cleaning. ETM can adjust numerous engine parameters and/or inject a small quantity of fuel into the exhaust stream for a short duration. The fuel turns to vapor and chemically reacts with the catalysts in the DOC to create heat to oxidize the PM.

It is important to note that at no time is the fuel in the DOC/DPF ignited, and there is no flame within the DOC/DPF.

Like passive filter cleaning, active filter cleaning requires no operator involvement, and there is no interruption to tractor operation.

Parked filter cleaning

In some instances where passive and active filter cleaning have not fully cleaned the PM from the system, a parked filter cleaning may need to take place. In general, the only time a parked filter cleaning will need to occur is when automatic filter cleaning has been disabled for an extended period of time and multiple warnings to engage filter cleaning were ignored or if the tractor has been used during light load conditions. Additionally, when the automatic filter cleaning process has been deliberately interrupted multiple times, or if active filter cleaning has failed numerous times due to a failed component, a parked filter cleaning may be requested. In these rare instances the operator will have to park the tractor and start the filter cleaning process.

The parked filter cleaning process needs to be activated based on usage and operation of the tractor. The process will take approximately 30 minutes.

This system constantly monitors the soot level of the tractor; making sure the tractor is always in peak performance condition.  This ensures high performance at all times.

Key features of the engine are:

• Economical cast-in-block cylinder design for good cooling and long life
• Direct fuel injection
  • Improves starting
  • Injects fuel directly on top of pistons for more efficient combustion
  • Develops more horsepower per liter (gallon) of fuel than indirect injection engines
• Aluminum alloy pistons are lightweight to reduce connecting rod bearing loads and provide good heat transfer characteristics
  • Design permits tighter tolerances and neutralizes expansion of the piston, which reduces blow-by and noise from piston slap
  • Top rings are higher on the piston and a thinner head gasket is used to greatly reduce the volume of unburned waste gases and increase combustion efficiency
• Timing gears and injector drive gears have a helical profile to reduce engine noise
• Auto-bleed fuel system
  • There is no need to prime the system if the tractor runs out of fuel
  • The system will self-prime the injection pump, lines, and injectors, providing fast fuel recovery for easier starting
• High-capacity lubrication system provides filtered oil, under pressure, to all engine bearings for long life 
• Key start and shutoff eliminates fuel shutoff knob
  • Electric solenoid shuts fuel supply off immediately when key is turned off, which replaces the need to pull a fuel shutoff lever like many older tractors
• Fuel filter with replaceable element
• Water separator with additional replaceable filter element
• See-through coolant recovery tank permits operator to check coolant level without removing radiator cap

 Dry-type air cleaner

• Dry-type air cleaner with safety element
  • Dual element design for added engine protection
  • Easy to service
• Hood can be easily opened without tools for full access to the engine
• Easy access to engine check and fill points on the right-hand side of the tractor by removing the side panels.

Clean and simple operator station is comfortable and convenient

An uncluttered design gives operators of all sizes plenty of room to be comfortable. Color-coded controls are located on either side of the operator.

• Hydrostatic transmission (HST) and brake pedals are designed and located for maximum comfort and ease of use.
• Contoured, comfortable seat enhances operator comfort.
  • Seat position adjusts fore and aft
  • Seat flips forward for protection from the elements.
• Flat operator platform provides for easy entry to/exit from the tractor.
• Folding Roll-Gard™ rollover protective structure (ROPS) and retractable seat belt increase operator safety.

Operator presence system:

• If the operator leaves the seat when the tractor is in gear, the engine shuts down
• If the operator leaves the seat when the power take-off (PTO) is engaged, the engine shuts down

Left-side step

• The left-side step allows for easy access on and off the tractor.
• Foot platform has a non-skid surface for sure footing.

Seat

The thick, soft padding on this seat provides a smooth and comfortable ride.

• Seat flips forward for protection from the elements.
• Adjustable using the fore and aft lever located under the seat, the seat slides on ramped rails to provide comfortable access to all controls.

Instrumentation

Easy-to-read instrument panel includes the following:

• Tachometer
• Low oil pressure indicator light
• Battery discharge indicator light
• PTO engagement indicator light
• Signal/hazard lamp indicator lights
• Multi-function liquid crystal display (LCD) display (hours, filter cleaning information, etc.)
• Filter cleaning status indicator light

Fuel gauge

Safety

Operator presence switch (OPS) in seat:

• OPS requires the operator to be in the seat to operate the transmission or PTO.
• ROPS is designed to meet or exceed American Society of Agricultural and Biological Engineers (ASABE) safety standards.
• Reflective ROPS strips for better tractor visibility.
• Seat belts are in base equipment on all John Deere compact utility tractors.
• Key switch interlock prevents bypass starting.
• Visual PTO warning light on the instrument panel alerts the operator when the PTO is running.
• Turn signal and flashing warning lights operate according to ASABE standards.
• Slow-moving vehicle (SMV) sign is provided for road transport.

Park brake

• Automotive hand-style park brake for easy on/off.
• Instrument panel has an indicator light for the park brake.

Two-post Roll-Gard ROPS

3E Series Tractors are equipped with Roll-Gard ROPS. These folding ROPS meet the ASABE standards for compact utility tractors.

• Overall height is 244.3 cm (96.2 in.) with R3 tires, 242.1 cm (95.3 in.) with R4 tires, 244.6 cm (96.3 in.) with larger R4 tires, and 244.9 cm (96.4 in.) with R1 tires.  With the Roll-Gard ROPS folded down, producers can easily to get their tractor into a garage with a standard 2.1-m (7-ft) garage door.

NOTE: The use of seat belts is recommended at all times when operating the 3E Series Tractor with folding ROPS.

An optional canopy is available to help protect the operator from the elements.

Optional two-spool rear selective control valve (SCV) for superior implement performance

3E Series Tractors can be equipped with a field-installed rear hydraulic remote kit, providing two additional hydraulic spools on the back of the tractor. This kit can be field installed on a tractor with a loader or without a loader.

The functions are completely separate from the loader. These rear remotes can be hooked up to a wide variety of implements and attachments such as follows:

• Hydraulically angled blade
• Hydraulically controlled chute/spout on a 3-point hitch-mounted snow blower
• Hydraulic scarifiers on a box blade
• Many other hydraulic rear attachments

This versatile kit gives 3E Series Tractor operators the options they desire for putting their tractors into a wide range of tasks.

The first spool is equipped with a float position, giving the operator the ability to contour the landscape and improve the final grade with certain implements.

NOTE: Neither of the spools in this kit are equipped with a detent position; therefore, they should not be hooked up to anything with a motor, as the valve was not designed to be run open. The kit is designed for momentary, on-demand hydraulic flow such as moving a cylinder.

The approximate installation time is 1 hour to 1.5 hours.

Optional iMatch™ Quick-Hitch feature allows for easy implement hookup

One of the greatest operator concerns involves difficulty in attaching tractor implements. John Deere has addressed this issue with the iMatch Quick-Hitch.

The iMatch Quick-Hitch provides easy hookup and a guaranteed fit for all Category 1 implements that are designed to meet the American Society of Agricultural and Biological Engineers (ASABE) Category 1 Standard S278.6 for quick-attach hitches.

• All implements require a set of bushings in order for the attachment to fit and work properly with the iMatch Quick-Hitch. One set of bushings comes with the iMatch Quick-Hitch.

NOTE: The bushing set can be seen in the picture above. These bushings allow the hooks on the iMatch and the pins on the implement to fit together properly. All other implements (box blades, tillers, rear blades, etc.) will require a set of bushings to enlarge the pin to fit with the iMatch hooks. Bushings of different lengths can be found in the parts system or through a bushing supplier (see dimensions below).

• Upper bushing
  • Inside diameter: 1.93-1.95 cm (0.76-0.77 in.)
  • Outside diameter: 3.15-3.18 cm (1.24-1.25 in.)
• Lower bushings
  • Inside diameter: 2.24-2.26 cm (0.88 to 0.89 in.)
  • Outside diameter: 3.63-3.66 cm (1.43 to 1.44 in.)