Claas LEXION 780, LEXION 760, LEXION 750, LEXION 740, LEXION 730P Service Manual

Small Grains

LEXION

780 760 750 740 730(P) 730
670

LEXION features.

Automatic Machine Optimization by
CRUISE PILOT and CEMOS AUTOMATIC

Spacious, Quiet, and Comfortable Cab

In-Cab Hydraulic HP Feederhouse
Pitch Adjustment

Standard Power Folding Grain Tank

Latest Tier 4 final Engine Systems

DYNAMIC COOLING System

JET STREAM High Performance
Cleaning System

CLAAS TERRA TRAC

CLAAS Exclusive APS Threshing System

POWER TRAC Intelligent 4WD System

Standard feederhouse.

HP feederhouse.

The standard feederhouse is designed for all crops and
features an extra large channel with a shallow angle that
provides a smooth transition for the crop into the APS
system for threshing.

A heavy duty 4-chain, 3-slat conveyor provides reliable
transfer of the crop through the feederhouse. The conveyor
chain rides on an adjustable front drum, and when it is in a
down position, provides added protection against rocks and
foreign debris.

Dual heavy-duty AUTO CONTOUR cylinders not only carry
the header, they also provide lateral tilt compensation when
operating in changing terrain.

Compatible with:

• All corn heads

• All rigid heads (VARIO, MAXFLO)

• F750 and F900 flex heads

• SWATH UP heads

The HP feederhouse includes all of the same features as
the standard feederhouse, plus an added header pitch
(HP) adjustment to more easily adapt to changing field
conditions along with a hydraulic chain tensioning system.

The HP feederhouse is equipped with the exclusive
optional hydraulic top-link that allows the operator to make
adjustments when desired from the cab to the header’s
pitch by simply adjusting the faceplate’s exclusive top-link.
The cutting angle offers 19 degrees of adjustability
(11 degrees forward, 8 degrees back), and AUTO
CONTOUR cylinders fitted within the HP faceplate
provide 9 degrees of lateral tilt.

Compatible with:

• All header types

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Unrivalled intake.

Dust suction fan.

An optional dust suction fan can be fitted to both the
Standard or HP feederhouse to help prevent dust from
obstructing the view of the operator. The turbine fan has
a removable shroud for easy clean out and inspection of
the fan unit.

Hydraulic reverser.

Reversing the feederhouse (and header) is done by a
powerful hydraulic motor that can be engaged
electronically from the cab without having to turn the
separator off. When operating with a platform head, the
reel will also reverse when the feederhouse reverser is
engaged in order to prevent any expelled material from
building up on the cutterbar.

Multi-Link Connector.

Make all seven electrical and hydraulic connections in one
easy step with the Multi-Link Connector. The self-sealing
hydraulic connections allow mess-free connection and
disconnection, even while under pressure.

Header lock.

A single lever securely locks all platform heads to the
combine feederhouse.

The header's vertical and lateral
position is displayed in CEBIS.

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Consistent results in any field.

Header drive.

Reduce fuel consumption without reducing power – the
direct header drive delivers maximum power to the
header for the ever-increasing volume of material being
passed through the feederhouse.

New feederhouse drive technology offers stronger, more
efficient header drive output to meet the demands of
larger heads:

Fixed speed: 107hp (80kW)
Variable speed (standard): 160hp (120kW)

Automatic soft start system.

Improved controlled engagement of the header drive
system. The new drive system allows for part of the
system to engage with the separator system to allow
for softer starts and decreased load limits when the
feederhouse is engaged.

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CLAAS CONTOUR:
Consistency matters.

AUTO CONTOUR:
Faster and more accurate than ever.

CLAAS CONTOUR is standard on all LEXION
combines. It allows automatic vertical response to
changing terrain via an exclusive combine ground
pressure sensor. This programmable cutting height
feature helps to ensure that you automatically return
to your set cutting position every time.

Optional equipment for both combine and header, the
CLAAS AUTO CONTOUR combines automatic vertical
and lateral compensation for changing terrain and ground
conditions. With advanced CLAAS ON DEMAND hydraulic
and MACH 5 electrical technology, the AUTO CONTOUR
system is the leader in terrain compensation performance.

The system records four pre-set cutting heights to ensure
optimal performance in all crops and conditions, allowing
you to focus on other harvesting tasks. AUTO CONTOUR
simplifies harvest by reducing operator fatigue, especially
with larger heads, and increases efficiency by maintaining
a consistent crop height.

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CLAAS Threshing & Separation

APS + ROTO PLUS

Only CLAAS integrates both systems into one combine to
achieve what other combines cannot.

• Independent threshing and separation speed control

• More adaptable to changing crops and conditions

• Maintains greater throughput optimization

Models

780
760
750
740
730(P)
730

APS + Multi-Finger Separation System

The same leading threshing technology of the LEXION 700 Series is combined with
advanced straw walker separation technology from CLAAS to provide the greatest
separation performance possible without compromising straw quality.

• Extra-long straw walkers with the exclusive Multi-Finger Separation System drum
provide unmatched straw walker separation.

“The APS SYSTEM lets me get in the field earlier and stay out later, giving me the largest output
per day during our limited harvest window.”

Model

670

APS threshing technology

APS: Separation starts up front.

Several different APS grate options
are available.

The exclusive APS system is the heart of every LEXION
combine, and is what gives all LEXION combines their
in-field advantage.

• Up to 30% of all grain is pre-separated by the APS
cylinder and concave (ahead of the threshing cylinder) to
reduce the load on the main concave for more effective
and thorough threshing performance.

• During pre-separation, the APS cylinder optimizes crop
flow by accelerating the crop and distributing it evenly
over the full width of the threshing cylinder. The
distributed material enters the threshing cylinder at the
same speed, width, thickness and angle for maximum
threshing efficiency

• Reduces wear and tear on the combine

• More efficient use of power for greater fuel economy

Rasp bar threshing drum.

The APS threshing cylinder features a completely enclosed
drum with raised rasp bars (24 inch tip diameter) to provide
solid threshing in all conditions. The raised rasp bars allow
greater expansion of the crop between them to enhance
performance without compromising efficiency. All rasp bars
are constructed using extremely durable material for
extended wear life.

Up-time is critical to getting maximum productivity from
your combine, so spending an hour or more reconfiguring
concaves to achieve quality threshing performance can
significantly reduce productivity. In a LEXION, the only
grates to change between crops are easily accessible
from the rock trap. These APS concave grates are
located under the APS cylinder, which can be changed
easily and quickly (as needed).

Impeller

Threshing drum

Accelerator (APS)

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APS provides good results faster.

Synchronized concave adjustment with
overload protection.

Our exclusive hydro-mechanical concave adjustment
ensures precision finger-tip adjustment when fine-tuning
performance. Hydraulic cylinders attached to the
mechanical adjustment linkages on each side of the
concave adjust the pre-concave and main concave
simultaneously. Each concave moves in and out from its
respective cylinder to prevent any bottle neck in the crop
flow. This exclusive movement reduces wear and tear on
the crop and the elements of the threshing system.

If a foreign object or extremely dense slug of material is
ingested into the concave area, the hydro-mechanical
adjustment linkage is equipped with a relief valve that will
automatically drop the concave open (and reset
automatically) to help avoid damage to the system and
make clean-out easier.

Dis-awning plates.

Dis-awning plates are an exclusive lever-operated blanking
plate system under the APS grates that can be used to
enhance threshing performance. Because they are lever
operated, the operator can engage or dis-engage them in
seconds without tools and without having to access the
inside of the machine.

Synchronized threshing speeds.

To maintain consistent material flow, each change made
to the speed of the threshing cylinder will simultaneously
change the speed of the APS cylinder and rear impeller.
This maximizes efficiency while at the same time
protects the crop.

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ROTO PLUS. A superior concept.

Further ahead of the others.

Two counter-rotating 17.5 inch diameter rotors
generate more separation force, more efficiently than
combines with a single-rotor processor. When you
combine that force with their near 14 ft. length, you
end up with the industry‘s highest capacity
separation system – per class.

Take advantage of the unbeatable combination of
APS + ROTO PLUS.

Rotor covers shown in closed position.

ROTO PLUS separation.

ROTO PLUS separation is a simple process. The rear
impeller of the APS System divides the crop into two
smaller, more manageable swaths and feeds them into
the rotors.

The ROTO PLUS system is made up of twin elliptical
tubes that are each fitted with a 17.5 in (445 mm)
diameter by 13.75 ft long multi-crop paddle rotor,
anchored just below the center of the tube - which is
ideal placement for optimizing separation performance.

Adjustable rotor covers.

All 700 series combines can be equipped with the hydraulic
rotor cover plate option. The purpose of rotor cover plates
is to hold material longer within each rotor cage to improve
separation performance (as needed). The covers are fitted
on the outside of the front two rotor grates of each rotor to
maintain consistent crop flow without any drag on power.

Rotor Cover Positions:

1. All grates open

2. First set of grates closed

3. First and second grates closed

4. Third and fourth grates closed
(780 Small Grains combines only)

Variable rotor speed adjustment.

Rotor speed adjustments are made easily using the CEBIS
dial. Separation speed can be adjusted independently of the
threshing system from 400 to 1000 rpm to provide more
efficient and practical adjustments on the go as field and
conditions change.

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JET STREAM.

Cascade pre-cleaner.

The JET STREAM cleaning system is specially designed to
handle the leading throughput of the APS Hybrid system.

• Removable poly preparation floor segments

• Dual-step cascade pre-cleaner with exclusive

JET STREAM

• Large sieves (6 ft long top sieve and 5 ft long
bottom sieve)

• Eight turbine fans (LEXION 780/760)

• Six turbine fans (LEXION 750/740/730)

• GRAINMETER

The dual ventilated cascade step ensures intensive
pre-cleaning. An extra wind tunnel from the turbine
fans directly supplies this area an intense stream of
air over the full width of the pre-cleaner enabling the
lighter chaff to be blown free of the grain.

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Get it all. Straw walker separation.

The APS threshing system on all LEXION combines works
so efficiently that most of the grain is separated out during
the pre-separation and threshing process. This efficiency
means there is less grain that needs to be separated from
the straw by a machine separation system.

Straw walker separation of the class 7 LEXION 670 is
enhanced by the Multi-Finger Separation System (MSS)
for extremely effective separation action while maintaining
high-quality balable straw.

Each walker is 14.4 ft (4400 m) long and comprised of
four aggressive steps fitted with fish-back risers for more
aggressive separation action. Large perforations allow grain
to be shaken through the walkers onto a pan beneath that
delivers the material to the cascade pre-cleaner.

Thorough agitation of the crop mat is critical for high separation efficiency, particularly under difficult field
conditions such as wet straw or green straw. The LEXION 670 is equipped with the Multi-Finger Separation
System (MSS) to ensure effective residual grain separation under all conditions.

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Effective straw walker technology.

Multi-Finger Separation System (MSS)
increases output.

MSS actively fluffs the crop with multiple controlled tines
which dig into the straw.The tines reach into the mat of
straw from above and aerate it while simultaneously
speeding it up.The straw mat is thinned, making it easier
for the remaining grains to separate out. The available
length of the straw walkers is used more effectively, while
the structure and quality of the straw is optimized. The
operation speed of the tines can be adapted to changing
harvest conditions.

Fast and easy tine adjustment makes fine-tuning your
LEXION 670 combine‘s walker performance a breeze.

Standard cleaning system
(LEXION 670 only).

The standard cleaning system is tuned specifically for use
with straw walker separation, maintaining balanced airflow
and efficient cleaning. Extra-long sieves are controlled
electrically from the cab.

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Preparation pan.

Located below the APS System, the preparation pan starts
the cleaning process using its exclusive shaking action to
stratify the heavier grain to the bottom and the lighter chaff
to the top. Using this method to transfer grain to the sieves
eliminates the need for shoe augers that not only
complicate the cleaning process by keeping the grain and
chaff mixed together but can result in added damage to the
crop caused by the augers. Once material travels to the end
of the preparation pans, the material flows over the dual
ventilated cascade step allowing the chaff to be blown out
of the sieve area. This decreases the work load on the
sieves, allowing for increased cleaning capacity.

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In-cab visual returns monitoring.

Clean work for brilliant results.

3-D cleaning system.

• Dynamic slope compensation actively controls the
pitch of the top sieve

• Operating range up to 20% side slope

• Maintenance free with no additional moving parts

• Fast, simple retrofitting

• Together with the AUTO CONTOUR, it is the ideal

“hillside package”

Returns window.

Actually seeing what is in the returns elevator allows the
operator to make smarter settings adjustments for improved
performance. All LEXION combines allow the operator to
look directly into the returns cross auger through the
exclusive returns window located in the lower right hand
rear corner of the cab.

All LEXION models also have the option to be equipped
with the electronic returns monitoring system with a digital
read out displayed on the CEBIS monitor.

GRAINMETER (optional).

And, for those who prefer the ultimate in returns monitoring,
the exclusive GRAINMETER displays on CEBIS the amount
of grain being carried within the volume of returns.

Without 3-D With 3-D

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Up to 385 bushels of the highest

quality grain.

Power folding grain tank extensions.

Introduced as an industry-first and standard on all LEXION
combines are the power folding grain tank extensions.
The operator simply pushes a button inside the cab for
fast, reliable hydraulics to open and close the grain tank
extensions without having to enter the grain tank.

Fast unloading.

The high performance, robust auger system delivers
up to 3.8 bushels of grain per second unloading rate
(3.2 bu/sec for LEXION 670, 2.8 bu/sec for rice
combines). Four unloading auger lengths (24.2 ft.,

26.2 ft., 28.2 ft., and 29.2 ft.) are available to ensure
extra clearance needed for large heads.

Heavy-duty grain tank.

The heavy-duty grain tank was further improved, now
featuring extended-wear grain tank floor, auger troughs,
augers, and vertical unloading tube and housing.

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25 ft (7.5 m)

30 ft (9 m)

35 ft (10.5 m)

40 ft (12 m)

29.2 ft (8.8 m) 4XL

28.2 ft (8.5 m) 3XL

26.2 ft (7.9 m) XXL

24.2 ft (7.3 m) XL

16 ft (4.9 m)

15.8 ft (4.8 m)

15.3 ft (4.7 m)

14.8 ft (4.5 m)

4XL Unloading auger.

An even longer unloading auger is now available on the
LEXION combine line. The new 4 XL unloading tube
reaches out 29.2 ft. from the center of the combine, which
is perfect for harvesting with heads over 40 ft wide.

LEXION 670 with up to 330 bu grain
tank capacity and 4XL unloading auger.

The LEXION 670 straw walker combine has an increased
grain tank volume of 300 bu standard and an optional
capacity of 330 bu, and is available with an unloading rate
of 3.3 bu/sec and the new 4XL (29.2 ft) unloading auger.

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After harvest is before harvest.

MAV® (Maximum Air Velocity) Chopper.

As yields increase, the amount of residue (straw and chaff)
to manage also increases. How the residue exits is just as
important as how it enters. Rapid, complete residue
decomposition will improve next year’s planting season and
yields. Residue chopped to a uniformly short length and
spread evenly across the full width of the field is a decisive
factor in next year’s success. Several different residue
management solutions are available.

TURBO CHOP /
PRO CHOP

Adjustable
counter knife

The MAV system features 60 knives paired over the rotating
drum with 31 stationary knives that can be engaged/
disengaged according to crop type. The MAV drum also
includes 6 winged fan blades on both ends to pressurize the
MOG for an accelerated exit velocity and assure a uniform
spreading width of up to 35 ft.

Long straw

Adjustable floor segment

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