Zetor Forterra Series

Forterra Engine

The superior-performing engines in the Forterra series are completely Zetor-built, and are a product of more than 60 years of Zetor's engine design expertise. These proven, dependable engines deliver excellent fuel economy, low maintenance requirements and top-notch performance in the field, while exceeding EPA emission regulation requirements.

• The Forterra water pumps are equipped with special spool-type bearing, designed for a service-free life.
     
• An air compressor is standard equipment and delivers 6 CFM at 90 PSI. It can be used to pump up tires in the field, or to run various equipment. Air pressure is also used to engage the front wheel drive clutch and rear differential lock.
• Access to all service jobs is exceptionally easy: Simply lift the hood.
• Dry air cleaner with extra high capacity main and safety elements.
• Heavy engine blocks ensure minimal sleeve distortion and long service life.

Forterra engines use the legendary all-mechanical in-line Zetor injection pumps.
Unlike most rotary pumps, the Zetor pump has no rubber moving parts and is designed for lifetime service-free operation. It will also tolerate fuel of various quality -another advantage over rotary pumps.
Forterra injection system is compatible with bio-diesel fuel, even B100.
Zetor injection pumps and turbochargers carry 5-year manufacturer’s warranty.

The Forterra engines have very high torque backup (over 40%), to reduce the need for down shifting. The engine horsepower stays constant through a broad range of engine speed. Engines exceed EPA emissions requirements, while maintaining superb fuel economy.

Precision balancers in Forterra engines ensure smooth, vibration-free run.








 
Unlike many competitors, Zetor engines use wet cylinder sleeves. Wet sleeves make overhauls fast and inexpensive. No special tools are required.

All Forterra engines are equipped with glow plugs in each cylinder, automatically controlled by the key switch. After a few seconds of preheating, the engine will start immediately, even on very cold winter days, without the help of a block heater. This system is far superior, as well as gentler to the engine than ether devices, and is totally maintenance-free. It is also much more efficient than a simple thermostart. For extremely cold climates, a block heater is available as optional equipment.

The new 14" heavy duty clutch with industrial grade cerametallic lining, has proven itself as well- suited for loader work. Very high mass flywheel dissipates heat efficiently. Newly redesigned clutch controls considerably reduce the effort on the clutch pedal. Low pedal force allows smooth and soft clutch engagement. The clutch does not require any adjustment.
A/C condenser and transmission oil cooler slide to the side for easy cleaning.

Zetor tractors use an all-copper radiator. The cooling system is designed to allow Forterra engines to operate at efficient temperatures, no matter what the load or adverse outside temperature.

Forterra Transmission

Standard transmission on all Forterra models is fully synchronized.
The main gear shift lever selects four forward speeds. The range selector (Hi-Lo) is operated by a separate lever.
Each gear has three different ratios selected on-the-go by the hydraulically controlled power shift.
Since Zetor tractors are popular loader tractors, a synchronized shuttle shift is now standard in every Forterra. This sophisticated design brings the total number of speeds to 24 forward and 18 reverse.

All 24 forward gears and 18 reverse gears are ideally spaced. Reverse speeds are slightly higher than forward speeds, to shorten cycles at loader work. Top speed with engine running in high idle was increased to approx. 25 mph, significantly speeding up transporting the tractor between work sites.
Speeds shown with rear tires 520/70R-38

Zetor's proven three-speed power shift is a simple and service-free unit. Its plates are cooled and lubricated by oil supplied from the transmission oil pump, for exceptionally long life. With engine stopped, the power shift stays mechanically fully engaged in "high".

The rear differential lock is engaged on-the-go by a push button, and disengaged at a touch of a brake pedal.

The power shift push button controls are located on the main gear shift lever.  
A dedicated shuttle shift makes the Forterra series a very capable loader tractor.

The front drive axle with very tight 55 degree turning angle provides turning radius comparable to 2WD tractors -essential for refficient loader work. Rugged rubber front fenders are standard. The limited-slip front differential, along with power-operated mechanical rear differential lock, provides increased traction in difficult terrain. The front wheel drive clutch is engaged and disengaged on-the-go by a switch.

Forterra Brakes

Wet disc brakes have eight discs, enclosed in massive brake housings and constantly cooled and lubricated by oil flow from the transmission oil pump.

Such generous design makes plate wear so minimal that the Forterra brakes are virtually maintenance-free. The hydraulic brake control system delivers smooth brake control at feather-light pedal effort.

Forterra Power Take Off

Independent Power Take Off with both 540 rpm and 1000 rpm speeds is standard on all models. To change PTO speed, just turn PTO end piece end-for-end.

The PTO shield opens up for easy implement shaft conection. The PTO clutch is engaged by a switch in the right cab post. A Belleville spring in the clutch pack and a special hydraulic cushion valve make engagement smooth and gradual, to protect PTO drivelines from shocks.

One of the Forterra's unique features is Ground Speed PTO, which makes it possible to reverse the direction of PTO rotation (for example, to reverse the direction of a post hole digger). The ground speed also offers extremely fuelefficient drive for stationary applications with low horsepower equipment (such as water pumps). With the Live/Ground Speed shift lever in neutral, PTO end can be turned freely to connect the implement shaft. The hydraulic PTO clutch pack is fully immersed in oil, to keep the plate wear to absolute minimum. Models 9742 and 10742 use four discs, model 12742 has a reinforced PTO clutch with five discs.

With PTO clutch disengaged, a mechanical brake keeps PTO from dragging. Like most Forterra gearbox shafts, the PTO clutch pack runs in high capacity tapered roller bearings. Also available: Front PTO (1000 rpm) and front three-point hitch.

Forterra Cab

• Newly designed suspended pedals provide greater comfort and reduced effort.
• Wide, sound-insulated cab is fully upholstered.
• The main gear shift lever has integrated power shift controls.
• The standard shuttle shift lever.
• The cab is accessible from both sides, even with installed loader controls for the original Zetor system 260 SLi loader.

Tilt and telescoping steering wheel is adjustable within a wide range.

Cab heating and air conditioning delivers more air through newly designed, more efficient filters. The powerfull heater supplies warm air just minutes after the engine start, even at zero degrees outside temperature.

The standard dashboard includes tachometer with hour meter, water temperature gauge, air pressure gauge, fuel gauge and number of warning lamps.

The multi-function digital display is also standard on all Forterras. It displays engine and PTO speeds, theoretical ground speed, battery voltage and other functions. The functions are selected by push buttons on the sides of the dashboard.

New lower foot steps, several grab rails and wide doors offer comfortable access from either side.
Large window area ensures good visibility of the front axle and of the three-point hitch. Windows are tinted to improve the comfort and contoured for increased strength and reduced noise. Rear window is heated.

The side windows behind the doors swing open. Front and rear wipers and windshield washer are standard (the front wiper is two-speed).

Other standard features include: A roller sun blind, two heated rear view mirrors and eight front and three rear halogen work lights.

The comfortable seat with arm rests is widely adjustable for operator’s weight, in height and back rest angle. Air-ride seat is optional.

Forterra Three-Point Hitch and Hydraulic System

Rugged and simple open center hydraulic system with electronic three-point hitch controls is extremely reliable and very easy to service.

It has been refined for almost two decades and has become the most advanced hydraulic system we ever built.
Heavy-duty 3-point hitch has lifting capacity of 10,800 lb., more than even the heaviest implements may ever require. Hitch is adjustable to both Category I and II. Standard hitch dampening reduces shocks during transport of raised implements. The cab provides good visibility of 3-point hitch and of the drawbar from the the seat. External three-point hitch push button controls on both rear fenders are standard.  
Newly designed live hydraulic pump has 19 GPM capacity. The Forterra hydraulic system has been designed to deliver high pressure, to meet demanding applications of the future.
In addition to the main hydraulic pump, unlike many competitors, all Forterra tractors have a separate, dedicated 6 GPM pump for steering.

This makes all the 19 gallons of oil supplied by the main hydraulic pump available for the 3-point hitch, for the front loader or the remotes, all the time (the total flow is 25 GPM).
The main hydraulic pump, its relief valve, the steering pump, and even the transmission pump (controlling the power shift and PTO clutch) are all externally mounted so servicing is a matter of minutes, if it ever becomes necessary.

Telescopic sway bars are standard. Fixed or floating positions of lower links are possible with both Cat.I and Cat.II implements.
The sway bars have builtin threaded elements, so any lateral slack of the lower links can be removed, for precision guidance of three-point mounted implements.  
Standard telescopic lower link ends facilitate he implement hook up.  Alternatively, lower links and top link with hooks are available.

These can be coupled and de-coupled from driver’s seat.

Optional front and rear weights are available in several packages:

Front weights: 6pcs (660 lbs)
or 10 pcs (1100 lbs)

Rear weights: 6pcs (510 lbs)
or 10 pcs (770 lbs)

To the right of the seat, at operator’s fingertips, are all hydraulic control levers:
- Electronic three-point hitch controls
- Three levers for remote sets

Zetor has been pioneering use of electronic hitch controls for almost 25 years. The latest generation of three-point hitch electronic controls is extremely reliable, maintenance-free, very simple and easy to use, yet rich in features.
Accurate and sensitive draft and mixed controls for plowing and other tillage operations are a traditional Zetor advantage.  

The standard three sets of remotes are very versatile and rich in features. All have quick connect (push-pull) couplers.
All three remote sets have floating positions. One of the remote sets has detented pressure positions with automatic release.
One of the ports is equipped with check valve, which avoids any drift caused by oil leaking back into the tractor.
A direct return (zero pressure) coupler is also standard (required by most hydraulic motors).

Multiple top link mounting points allow the operator to customize the implement geometry for easier penetration into the soil.






  
The heavy duty drawbar is available in two versions with varying height adjustment range, to meet the needs of every farmer and any application.

Service and Maintenace

Easy and inexpensive servicing has been a Zetor tradition. The Forterra series is no exception.
The extent of the regular scheduled maintenance has been further minimized. No special tools or equipment are required for the regular maintenance. In fact, the Forterra tractors require hardly any special tools for any kind of servicing, including overhauls.
Many users will do the maintenance themselves, saving time and money.

The new hood design provides comfortable access to the engine and all its accessories:
The air conditioning condenser and the transmission oil cooler are accessible through the open hood. Both the condenser and the transmission oil cooler slide sideways for easy cleaning.
Radiator contamination with grass, seeds etc. is greatly reduced by newly designed hood seals.

The engine fuel filter, oil filter and oil fill plug and dipstick are centralized at one service-friendly location. Engine oil exchange intervals have been extended to 500 hours.








 
The hydraulic filters (one suction screen and one glass fiber element) are next to left foot steps, within easy reach. Filter servicing is simple and quick.









 
The transmission/ hydraulic oil fill neck and dipstick are on the back side of the differential housing, for convenient access.








The battery, the battery disconnect switch and the tire inflator valve are all within easy reach, right next to cab foot steps.






 
The large capacity fuel tank (48 gallons) offers convenient ground-level fueling.