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

POWER TRAC Intelligent 4WD System

JET STREAM High Performance

Cleaning System

CLAAS TERRA TRAC

CLAAS Exclusive APS Threshing 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.

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

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.

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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.

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.

AUTO CONTOUR:

Faster and more accurate than ever.

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		Models
achieve what other combines cannot.
		780
•	Independent threshing and separation speed control	760
•	More adaptable to changing crops and conditions	750
•	Maintains greater throughput optimization	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.

Model

670

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

APS: Separation starts up front.

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

Several different APS grate options are available.

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).

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.

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.

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

Cascade pre-cleaner.

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.

In-cab visual returns monitoring.

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Clean work for brilliant results.

3-D cleaning system.		Returns window.
•	Dynamic slope compensation actively controls the	Actually seeing what is in the returns elevator allows the
	pitch of the top sieve	operator to make smarter settings adjustments for improved
•	Operating range up to 20% side slope	performance. All LEXION combines allow the operator to
•	Maintenance free with no additional moving parts	look directly into the returns cross auger through the
•	Fast, simple retrofitting	exclusive returns window located in the lower right hand
•	Together with the AUTO CONTOUR, it is the ideal	rear corner of the cab.
	“hillside package”
		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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29.2ft (8.8 m) 4XL

28.2ft (8.5 m) 3XL

26.2ft (7.9 m) XXL

24.2ft (7.3 m) XL

m) 9.(4 ft 16 m) 8.(4 ft 8.15 m) 7.(4 ft 3.15 m) 5.(4 ft 8.14

25 ft (7.5 m)

30 ft (9 m)

35 ft (10.5 m)

40 ft (12 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.

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.

MAV® (Maximum Air Velocity) Chopper.

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.

TURBO CHOP / PRO CHOP

Long straw

Adjustable counter knife

Adjustable floor segment

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