The document provided is an owner's manual for the VAIL PRODUCTS XBC2-8515/20 and XBC2-7715/20 rotary cutters. This manual outlines the function, technical specifications, usage, and maintenance of these attachments.
Function Description:
The VAIL PRODUCTS XBC2-8515/20 and XBC2-7715/20 are rotary cutter attachments designed for heavy-duty vegetation management. They are intended to be mounted on a prime mover (such as a skid steer or excavator) and utilize the prime mover's auxiliary hydraulics to operate. The primary function of these cutters is to clear large brush and small trees, with a cutting capacity of up to 10 inches in diameter. The design emphasizes robust construction for demanding environments, incorporating features like a shatterproof polycarbonate front cab door for operator safety when installed on the prime mover. The attachment is designed for efficient cutting and mulching of material, making it suitable for land clearing, right-of-way maintenance, and other similar applications. The mulching blade carrier system is designed to process cut material effectively.
Important Technical Specifications:
The manual provides specifications for two models: the 77" Unit and the 85" Unit.
- Overall Height: 26.5" for both units.
- Overall Width: 79.5" for the 77" Unit and 88" for the 85" Unit.
- Overall Length: 79" for the 77" Unit and 84" for the 85" Unit.
- Cutting Width: 67" for the 77" Unit and 75.5" for the 85" Unit.
- Minimum Cutting Height: 0.625" for both units.
- Cutting Capacity (Max Tree Diameter): 10" for both units.
- Deck Thickness: 3/16" High Strength for the 77" Unit and 1/4" High Strength for the 85" Unit.
- Max Operating Pressure (Attachment): 3500 psi for both units.
- Recommended Flow (High Flow): 20 - 45 gpm for both units.
- Recommended Flow (Low Flow): 25 gpm Max (This appears to be a typo in the manual, as it's listed under "Recommended Flow (Low Flow)" but with a "Max" designation, and the "High Flow" range starts at 20 gpm. It's likely intended to indicate a maximum for a specific configuration or a general maximum for lower flow systems, but the primary recommendation is 20-45 gpm).
- Required Skid Steer Lifting Capacity: 2200 lbs. for the 77" Unit and 2400 lbs. for the 85" Unit.
- Weight: 2140 lbs. for the 77" Unit and 2320 lbs. for the 85" Unit.
- Bolt Torque Specifications: The manual includes a detailed table for SAE Grade 5 and SAE Grade 8 torque values in both Pounds-Feet and Newton-Meters, for various bolt sizes from 1/4" to 1-1/2". This is crucial for proper assembly and maintenance. For instance, a 5/8" UNF x 2-1/2" Hex Cap Screw Grade 9 (likely a typo, should be Grade 8 as per table) requires 239 ft. lbs. of torque. Plow bolts for the mulching blade carrier require 250 - 400 lb-ft of torque.
Usage Features:
- Attachment to Prime Mover: The rotary cutter is designed for easy installation onto a prime mover, connecting to its auxiliary hydraulic system. The manual emphasizes the importance of reading both the attachment manual and the prime mover's manual for proper installation and operation.
- Safety First: The manual heavily stresses safety, with numerous warnings about potential hazards such as rotating blades, thrown objects, pinch points, hydraulic fluid pressure, and exposure to crystalline silica dust. It mandates wearing proper safety glasses, goggles, or a face shield, and other personal protective equipment.
- Pre-Operation Checks: Before operating, users must ensure all safety decals are in place and legible, check for any damaged or missing parts, and verify that all locking pins, latches, and connection devices are properly installed and secured.
- Operating Tips: Continuous rotation of the blades is required to prevent overheating of the hydraulic system. If the rotary cutter stalls, auxiliary hydraulics should be disengaged, and the cutter should be removed from debris before restarting. Blade rotation is maintained by operating the attachment at pressures below relief valve settings.
- Cutting Large Brush and Small Trees: For cutting large brush and small trees up to 10" in diameter, the manual recommends rolling the front of the rotary cutter up 1-2 feet, slowly driving into the tree, and allowing the push bar on the rotary cutter to push against the tree. The push bar is designed to bend the tree over and finish the cut. Steps #2 and #3 should be repeated until the notch is sufficient.
- Troubleshooting: The manual includes a troubleshooting section for common issues like excessive vibration (blades bent, damaged, or worn; foreign material in blade carrier; imbalance of blade carrier), cutter stalls (power and return hoses reversed; bearing failure; foreign material in blade carrier; control valve or O-ring failure), and issues related to cutting too long or thick grass, or too big diameter brush.
Maintenance Features:
- Regular Checks: Maintenance is key to long equipment life and safe operation. The manual outlines a weekly check schedule and checks at 40 and 1200 hours.
- Lubrication: Weekly lubrication of the drive bearing housing is required. The oil level in the drive bearing housing should be checked once a week and filled with a mild extreme pressure lubricant API-GL-5, No. 80 or 90 weight gear lubricant. The fill/check plug is located on the drive bearing housing.
- Hydraulic System: Regular checks of the prime mover/loader hydraulic system, hydraulic oil levels, and hydraulic lines for leaks or damage are crucial. The manual specifies changing oil in the drive bearing housing by removing the extraction hose into the housing so that it reaches the bottom, placing an approved container or drum to waste oil, and following instructions for fluid removal. The housing should be refilled with approximately 20 ounces of a mild extreme pressure lubricant API GL-5, No. 80 or 90 weight gear lubricant.
- Blade Maintenance: Replacing or sharpening the blades is a critical maintenance task. The unit requires blocking during this procedure. The blades should be inspected regularly (every 8 hours) to ensure they are sharp, tightened correctly, intact, and not wedged to the blade carrier plate. All four blades must be replaced at the same time and NEVER try to weld or straighten damaged blades. The manual provides detailed steps for replacing blades, including loosening the locknuts on the access cover and rotary cutter, and positioning the nuts in the access opening. It also specifies the torque for the blade carrier bolts.
- Decal Replacement: The manual includes a section on decals, emphasizing that all safety signs must be clean and legible. Damaged or missing decals must be replaced immediately.
- Storage: Proper storage procedures are outlined to ensure the cutter is in good condition for the next time it's used. This includes cleaning the unit, removing all mud, dirt, and grease, sharpening or replacing blades, inspecting visible signs of wear, breakage, or damage, tightening all loose nuts, bolts, and hydraulic connections, checking the drive bearing housing for proper lubricant level, sealing the hydraulic system from contaminants, applying a rust-preventative spray to all moving parts and the bottom of the deck, and storing the unit in a dry and protected place.
- Parts Section: The manual includes detailed parts diagrams and lists for the 77" & 85" Deck, 77" & 85" Drive, 77" & 85" Mulching Blade Carrier, and 77" & 85" Blades, with part numbers, descriptions, and quantities. This is essential for ordering replacement parts.
- Warranty: The product comes with a U.S. Warranty of twelve (12) months for hydraulics and thirty-six (36) months for structural components from date of shipment, provided it is properly installed, maintained, and operated within normal usage. An International Warranty is also provided for six (6) months for hydraulics and twelve (12) months for structural components.
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