The device described in the manual is the Miller Ag-Bag G6170 Bagger, a piece of agricultural equipment designed for bagging forage and grain.
Function Description:
The Ag-Bag G6170 Bagger is used to store various agricultural products, such as alfalfa, earlage, and shelled corn, in large plastic bags. The machine features a conveyor system that feeds the product into a tunnel, which then fills and stretches the bag. A backstop system, controlled by cables and a hydraulic brake, regulates the tension on the bag to ensure proper filling and compaction. The machine is PTO-driven by a tractor, which also provides hydraulic power for certain functions like conveyor raising/lowering and cable rewind. An optional inoculant applicator can be connected to the tractor's 12-volt system to treat the product during bagging. The manual emphasizes the importance of proper bag installation, sealing, and venting to ensure optimal fermentation and preservation of the stored material.
Important Technical Specifications:
- Model: G6170
- Part Number: 42.0901734C
- Width - Towing: 8 ft. - 6 in. (without tunnel extension), 10 ft. - 6 in. (with tunnel extension)
- Width - Bagging: 21 ft.
- Length - Towing: 20 ft. - 10 in.
- Length - Bagging: 12 ft. (without tunnel extension), 14 ft. (with tunnel extension)
- Height - Towing: 8 ft. - 7 in. (without bag boom), 9 ft. - 7 in. (with bag boom)
- Tongue Weight - Towing: Approximately 1,080 lbs
- Weight: Approximately 8,500 lbs
- Rotor Length: 7 ft.
- Rotor Teeth: 56
- Tunnel Size: 9 ft. or 10 ft.
- Maximum Bag Length: 250 ft. (standard), 300 ft. (with 60 ft. cable extensions)
- Tractor PTO: 540 RPM
- Maximum Horse Power Rating: 170 HP
- Cable Length: 250 ft. (7/16" diameter)
- Shear Bolts w/Nuts: M12 x 55mm Gr 8.8 (5 extra located under hydraulic oil reservoir cover)
- Tire Air Pressure: LT 265/75R16 @ 80 PSI (cold)
- Wheel Lug Nut Torque: 9/16" Wheel Studs - 100 ft.-lbs
- Gearbox Oil: 75w90 Synthetic Oil, 2-1/2 Gal. (9.5 liter) capacity
- Hydraulic System Oil: ISO Grade 68 Hydraulic Oil, 19 Gal. (72 liter) total capacity
- Hand Pump Oil: Hydraulic Jack Oil
- Grease: Grade 2 Lithium Complex EP Grease (for rotor bearings, jackshaft bearings, bag boom pivot, wheel bearings)
- Chain Oil: SAE 30 (for rotor chain, hydraulic pump drive chain, gearbox output shaft coupler chain, conveyor drive chain, conveyor drive coupler chain)
Usage Features:
The G6170 Bagger is designed for efficient and safe operation, with detailed instructions for assembly, setup, and bagging.
- Assembly: Involves attaching the bag boom, tunnel extension, and bag pan. The backstop lacing pattern is provided for proper setup.
- Transport to Bagging Position: Detailed steps for changing wheel and hitch positions, including using lift jacks to raise and lower the bagger for wheel removal and re-positioning. The tow hitch can be moved from a transport to a bagging position.
- PTO Connection: Instructions for attaching the PTO shaft to both the bagger gearbox and the tractor, ensuring proper locking and guard placement.
- Inoculant Applicator: Connection details for units equipped with an inoculant applicator.
- Bag Installation: Emphasizes using genuine Ag-Bag® bags of the correct size. The bag box has an arrow indicating the direction toward the bagger. The bag pan is lowered, and the bag cradle is used to position the bag on the tunnel.
- Bag Sealing: Two methods are described: using a Master Seal® or a double knot tie for an airtight seal.
- Backstop Attachment: Cables are hooked to the backstop slings, and brake pressure is applied to hold the backstop in position.
- Conveyor Operation: Manual or hydraulic options for lowering and raising the conveyor. The conveyor should be approximately six inches off the ground during bagging.
- Bagging Operation: Requires setting cable drum brake pressure (400-450 psi starting point, adjustable based on crop conditions and bag stretch). Tractor PTO engagement and hydraulic control for conveyor speed are outlined.
- Bag Stretch Monitoring: Crucial for proper compaction. Stretch bars on the bag and a "ground to ground" measurement method (using weighted strings) are used to monitor and adjust brake pressure.
- Bag Removal: Involves releasing brake pressure, moving the bagger forward to clean out the tunnel, unhooking the backstop, and sealing the bag end.
- Bag Venting: Essential after sealing to release gases produced by fermentation, using a reusable vent valve and installation tool.
- Bagging Surface: Recommendations for site selection (level, good drainage, away from rodents and livestock) and considerations for different crop types (haylage, corn silage, grains) and moisture levels.
Maintenance Features:
The manual provides comprehensive lubrication and maintenance schedules to ensure long-term, dependable service.
- Daily Checks: Tire air pressure, wheel lug nut torque (initial 10 miles, then daily), cable drum shaft bearings, upper, center, and lower conveyor apron shaft bearings, lower conveyor clean out.
- Per Bag Checks: Rotor bearings (10 pumps of grease per bag, split between start and halfway), rotor drive chain, hydraulic pump drive chain, gearbox output shaft coupler chain, conveyor drive chain, conveyor drive coupler chain, cables (for fraying, kinks, broken strands).
- Monthly Checks: Bag boom pivot, wheel bearings (for highway use).
- Annually/As Required: Wheel bearings (for non-highway use), hydraulic oil filter (or whenever oil is changed), gearbox oil (initially after first bag, then annually), rotor tooth tine caps (replace if worn or damaged), shear bolts (replace as needed), hydraulic hand pump (refill oil, bleed air, grease pivot points).
- Chain Tension Adjustment: Detailed procedures for conveyor chain, conveyor drive chain, hydraulic pump drive chain, and rotor drive chain, including specific deflection measurements and adjustment steps.
- Hydraulic Oil Maintenance: Daily level checks, changing oil every 250 hours or if contaminated/burned. Instructions for draining and refilling the main and lower reservoirs.
- Gearbox Oil Maintenance: Initial change after the first bag, then annually. Instructions for draining and refilling with 75w90 Synthetic Oil.
- Storage: Procedures for cleaning, lubricating all moving parts, draining gearbox oil, and storing the bagger to prevent corrosion and damage.
Safety Precautions:
The manual prominently features safety decals and warnings throughout, emphasizing the importance of reading and understanding the manual, observing safety decals, and following a strict power source shutdown procedure before any cleaning, unclogging, adjusting, lubricating, or servicing. Key warnings include keeping clear of rotating parts, avoiding high-pressure fluids, not operating with guards removed, and using proper lifting techniques for heavy components like the backstop.
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