log max 7000XT Fixed Head
log max 7000XT Fixed Head
This manual provides comprehensive instructions for the Log Max 7000XT Fixed Head grapple harvester, emphasizing the importance of understanding the manual before use. It covers operation, maintenance, and safety, noting that not all equipment described may be present on every unit.
Safety is paramount, with warnings about potential risks such as chain shots, crushing, and explosion hazards. The manual outlines necessary protective equipment and emphasizes compliance with local laws and regulations.
Installation must be performed by qualified technicians, and the carrier must meet specific standards, including ISO 11850 requirements for operator protection.
The manual details the mechanical and hydraulic design of the head, including components like the delimbing unit, feeding unit, and saw unit. It also describes the Active Friction Control™ system and measurement units for diameter and length.
Guidelines for transporting and storing the head are provided, emphasizing safety and proper procedures to prevent damage.
A detailed maintenance schedule is included, with instructions for inspecting and servicing various components, such as the delimbing knives, feed rollers, and hydraulic system. Regular checks are crucial to ensure safe and efficient operation.
The manual provides technical specifications, including dimensions, weight, noise levels, and hydraulic requirements. It also outlines general tightening torques and lubricant specifications.
Information on warranty conditions and the process for lodging complaints is provided, stressing the importance of adhering to the manual's guidelines to maintain warranty validity.
The rating plate under the protective cover provides essential information such as machine type, head model, year of manufacture, serial number, basic weight, and maximum hydraulic pressure. Compliance with the EU Machinery Directive 2006/42/EC is indicated by CE and ET markings.
The frame supports other units and includes an integrated tank for saw chain oil. It features upper and lower wear plates for protection against wear damage. The protective cover shields control electronics and valve assembly, with easy access facilitated by hinges, latches, and gas dampers.
This unit is responsible for removing branches and holding the stem. It includes one fixed and four movable delimbing knives, with the upper knife being spring-loaded and sensor-equipped for stem position measurement. Active Friction Control™ and hydraulic control options enhance functionality.
The feeding unit feeds the stem through the head using two feed rollers on hydraulic motors. The system allows for forward, backward, or stationary feeding, with pressure adjustments based on stem diameter. Various feed roller types are available for different applications.
Diameter and length measurement units use sensors and mechanical systems to calculate stem dimensions, aiding in optimal timber processing.
Equipped with a main and top saw, the unit uses a hydraulic motor to drive the saw chain. The saw bar's movement is controlled by a hydraulic cylinder, with sensors ensuring precise operation. Safety features include a chain shot guard and manual chain tensioner.
The Super Greasy hydraulic piston pump provides oil-based lubrication, with adjustable flow rates controlled by the head's system.
Options like the Find End system and stump treatment equipment enhance functionality, with laser sensors and pesticide application capabilities.
Guidelines for safe transport and storage include securing the head on a pallet, ensuring hydraulic connections are maintained, and performing regular maintenance to prevent corrosion and damage.
During storage, ensure there are no leaks and apply hydraulic oil to exposed piston rods. Before operation, check electrical connectors for corrosion, lubricate the head, verify saw chain lubrication, mount saw chains, and remove blade guards from delimbing knives.
Heads contain pressurized gas accumulators. Contact local authorities for scrapping procedures. Before scrapping, wash the head, drain oils, dismantle electronic and rubber components, and sort remaining parts as scrap metal.
Do not use the head to relieve carrier weight. Before starting, clean debris, warm hydraulic oil, tension saw chain, and operate hydraulic functions to warm oil. Ensure saw chain lubrication is functioning.
Plan felling considering tree distance, stacking location, and stability. Select felling direction based on wind and terrain. Use gentle movements to minimize wear. For thick trees, use double cutting technique.
Delimb and cut trees into lengths, sorting by quality. Avoid laying branches on processed timber. For thick branches, delimb further than intended length to ease processing.
After work, release saw chain tension, clean the head, and park in a stable position. For inspections, park the head as instructed, relieve hydraulic pressure, and ensure safety measures are followed. Inspect for cracks, wear, and electrical wiring integrity.
Be aware of risks such as crushing, burns, and cuts. Always follow safety instructions and use protective equipment when necessary.
This document provides detailed procedures for the inspection and maintenance of delimbing knives, feed rollers, measurement units, and saw units. It emphasizes the importance of proper maintenance to ensure the longevity and functionality of the equipment.
- Minor Damage: Use a hammer and file for minor repairs. Major damage requires a grinding disc, ensuring not to overheat the knives to maintain hardness.
- Edge Template: An edge template is available for maintaining the correct edge angle, except for the lower knife's counter-chamfers.
- Replacement: Only qualified technicians should replace delimbing knives.
- Upper Knife: Sharpen according to the edge template. Repair welding is possible for worn blades.
- Right and Left Knives: Sharpen as per the template. Replace if thickness is below 6 mm.
- Lower Knife: Sharpen with a counter-chamfer. Replace if height is below 132 mm or thickness is less than 14 mm.
- Fixed Knife: Integrated into a wear plate, replaced when worn.
- Check the spring for damage and adjust preload by loosening the locking nut and adjusting the screw.
- Replacement involves removing the old spring and installing a new one, followed by preload adjustment.
- Ensure only the ignition is activated during sensor setting. Adjust the sensor for proper delimbing and feed unit function.
- Follow specific steps to adjust the sensor, ensuring mechanical contact and proper locking.
- Inspect for sharpness and wear. Replace if necessary.
- Tighten nuts to specified torque values, repeating after one hour if recently installed.
- Replacement involves loosening nuts, securing with lifting equipment, and installing new rollers.
- Diameter Measurement: Check sensor values; discrepancies indicate defects requiring technician intervention.
- Length Measurement: Inspect mechanical parts, check for wear, and ensure proper rolling resistance. Replace components as needed.
- Regularly check the saw chain, bar, sprocket, and chain catcher for wear and damage.
- Ensure proper lubrication and tensioning of the saw chain.
- Replace components like the saw bar and sprocket when specific wear limits are reached.
- Many procedures require technicians with specific knowledge, especially for replacements and adjustments.
- Safety warnings are provided for handling sharp and moving parts, emphasizing the use of protective equipment.
- Adjusting Saw Chain Tension: Loosen the preload on the saw bar, tension the chain by turning the cam anti-clockwise, and secure the bar by turning the locking shaft clockwise. Ensure the chain tension is released after work to allow for contraction when cooling.
- Replacing Saw Chain: Loosen preload, release tension, disengage the chain from sprockets, and install a new chain. Follow tensioning instructions.
- Replacing Saw Bar: Loosen preload, release tension, disengage the chain, and remove the saw bar. Install a new bar ensuring proper alignment with guide pins, then install and tension the chain.
- General Warnings: Be cautious of pressure in the system and risk of burns. Avoid skin contact with hydraulic fluids.
- Replacing Hydraulic Hose: Ensure the new hose matches or exceeds the pressure class of the old one. Follow specific procedures for different coupling types (ORFS, BSP, Banjo, JIC, WEO) including cleaning, lubricating, and tightening to specified torques.
- Accumulator Inspection and Replacement: Only qualified technicians should perform these tasks. Follow specific steps for cleaning, loosening, and replacing accumulators.
- Pressure Check: Requires familiarity with the system. Ensure the hydraulic system is depressurised before connecting/disconnecting pressure gauges.
- Pressure Settings: Detailed settings for various functions are provided, including main pressure, servo pressure, and auxiliary functions. Adjustments should be made by knowledgeable technicians.
Some pressure settings require special procedures, which should be followed as per the instructions provided.
To ensure proper operation, activate the function connected to "PL" and maintain activation during checks. For rotation unit checks, remove hydraulic hoses and install plugs in valve section ports. Adjust bar feed pressure based on conditions like weather and tree species, with nominal settings as defaults. Set feed roller arm pressure low enough to prevent slipping.
During maintenance, park the head as per "Parking in the tilted up position." Ensure the laser sensor's area is clear of debris. Only qualified technicians should handle laser sensor replacement and troubleshooting. Repair welding should follow Log Max AB's instructions to avoid damaging electric components.
- 8-hour Schedule: Includes lubrication of various points like delimbing knives and feed roller arms. Perform rough cleaning, function tests, and checks on hoses, cables, and tension belts.
- 50-hour Schedule: Inspect for cracks, check cotter pins, and inspect electrical wiring and diameter measurement units.
- 250-hour Schedule: Conduct hydraulic system pressure checks and inspect sensors and measurement units.
- 1,000-hour Schedule: Basic sensor settings and inspection of feed roller motors and wear plates.
Common issues include problems with the upper delimbing knife, saw chain oil delivery, and measurement inaccuracies. Solutions involve checking springs, oil levels, and cleaning clogged components.
Specifications include dimensions, weight, noise levels, and hydraulic requirements. The head should not be used below -35°C. Lubricants must meet specific criteria, and mixing different types is discouraged. General tightening torques are provided for various screw joints.
Ensure proper engine and hydraulic power, pressure, and oil flow. Follow manufacturer guidelines for saw chain speed and use appropriate lubricants to maintain equipment efficiency.
Catalog excerpts
7000XT Fixed Head User Manual User Manual in Original
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About this manual 11 Information about warranties and complaints 19 Demands placed on the machine owner 21 Demands placed on the carrier 21 Frame and protective cover 24 Upper wear plate 24 Lower wear plate 24 Upper delimbing knife 25
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Active Friction Control™ (AFC) 26 Hydraulically controlled upper delimbing knife 26 Right and left delimbing knives 26 Lower delimbing knife 26 Fixed delimbing knife 26 Diameter measurement unit 28 Length measurement unit 29 Length measurement with measuring wheel 29 Chain lubrication, Super Greasy 32 Find End (Root search) 33 Transport of unattached head 35 Transport of head mounted on the carrier 36 Parking on completion of the work 44 Unforeseen operational stoppages 44 Parking the head prior to inspections and maintenance 48
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Parking in the tilted up position 48 Parking in the tilted down position 48 Make sure that the head does not have any cracks 49 Inspecting stop buffers 50 Inspecting electrical wiring 50 Inspecting wear plates 50 Upper wear plate 50 Lower wear plate 50 Inspecting and adjusting the protective cover and over- 51 centre latches Axles for feed roller arms and delimbing knives 51 Inspecting Log Max’s standard shafts 51 Inspecting axial play 52 Delimbing knives’ edges 53 Upper delimbing knife 53 Right and left delimbing knives 54 Lower delimbing knife 54 Fixed delimbing knife 54 Upper delimbing knife’s...
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Replacing measuring wheel tracks 61 Inspecting chain shot guard 63 Fill with saw chain oil 63 Checking saw chain lubrication 64 Inspection of saw chain sprocket and saw chain catcher 65 Replace saw chain sprocket and saw chain catcher 66 Check the saw chain tension. 67 Check the saw chain tension. 71 Replacing the hydraulic hose 74 Hydraulic hose with ORFS couplings 74 Hydraulic hose with BSP couplings 75 Hydraulic hose with banjo coupling 76 Hydraulic hose with JIC coupling 77 Hydraulic hose with WEO coupling 78 Inspection and replacement of accumulators 78 Inspection and adjustment of the pressure...
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Dimensions and basic weight. 95 Weight of extra equipment 95 Minimum hydraulic system requirements 96 Requirements regarding saw chain oil 97 General tightening torques 98 General tightening torques with Nord-Lock washers 99 General tightening torque for Expander 99
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Foreword About this manual These instructions are for the Log Max 7000XT Fixed Head grapple harvester. The manual provides information about how the harvester head (subsequently referred to simply as the “head”) works, is maintained and is used safely. Before starting to use the head, carefully study the manual. The manual principally covers the basic mechanical and hydraulic design, function, operation and maintenance of the head. The demands placed on and the functionality of the head’s electrical control system are only covered in general terms. Note! Your head is not necessarily fitted with...
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Note! To avoid any misunderstanding, it is safest to submit comments and suggestions in English or Swedish. Below are a summary and explanation of specific expressions that are used in this manual and that are not explained elsewhere.
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Safety General Incorrect use of the head can result in serious injuries to the operator as well as serious damage to the head and the surroundings. It is therefore important to read, understand and follow the instructions in this manual before starting to use the head. If the provisions in this manual deviate from local laws and regulations, you are obligated to comply with local laws and regulations. Warnings and symbols The following warnings and symbols are used in this manual to alert you to risks that could result in personal injury or death. Danger! Danger indicates that an accident could...
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Note! Clarifies information that is important for understanding or executing operations. Safety stickers Safety stickers must be clearly visible, legible and complete. If a sticker is damaged or missing, it must be replaced. Safety stickers can be ordered from your dealer. Head The head is equipped with safety stickers that warn about circumstances that could result in serious injury or death. The safety stickers have a yellow background. The following safety stickers are affixed to the head: 1. Warning about chain shots 2. Warning of crushing risk Carrier The carrier’s crane must be supplied...
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All work using the head may only be carried out by individuals possessing the requisite knowledge about the work that is to be carried out. This applies in particular, although not solely, to: Requisite knowledge refers to the knowledge that is required to carry out the work correctly and safely. Use the protective equipment that is necessary for the work that is to be carried out, for example: helmet, safety shoes, gloves, ear defenders, safety goggles. The head is intended solely for logging work, where the head fells and processes trees. Any other use is prohibited. Examples of prohibited...
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The operator is obliged to stop work immediately if someone is within the risk zone. Chain shot When a saw chain breaks, parts of the saw chain can be thrown out at high speeds. If saw chain breaks with a whiplash, the speed of these parts may be several times higher than the speed of the saw chain. Danger! Chain shots are associated with danger to life! The energy in the event of chain shot can be equivalent to that of a bullet from a rifle. It is therefore essential to follow the instructions regarding the use of the head and maintenance of the saw unit.
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In the event of chain shots, parts of the saw chain can travel outside of the head’s risk zone. When activating the saw unit, the head must be positioned so that there is no risk of chain shots hitting: • people outside the risk zone. • other machines. • other property. The head is equipped with a chain shot guard. The guard is integrated into the head’s frame. Under no circumstances may the guard be modified. Do not use the head if the guard has been damaged or its function has otherwise been impaired. A crushing risk exists by the head’s moving parts. Follow the instructions in this manual...
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