Summary of Contents for Oregon 480RC
- Page 1 Original Instruction Manual ROTARY CUTTER Models 480RC, 600RC and 720RC OregonProducts.com...
- Page 2 INTRODUCTION Introduction Read this manual before operating your Oregon equipment. The information presented will prepare you to do a better and safer job. Keep this manual handy for ready reference. Require all operators to read this manual carefully and become acquainted with all adjustment and operating procedures before attempting to operate. Replacement manuals can be obtained from your dealer.
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Page 3: Table Of Contents
TABLE OF CONTENTS Table of Contents Explanation of Signal Words Troubleshooting Specifications Dealer Service Gearbox Maintenance General Information Seal Repair Disassemble Gearbox Safety Rules Reassemble Gearbox Crossbar Removal Training Crossbar Installation Preparation Universal Joint Repair Operation Maintenance Assembly Instructions Transportation Dealer Set-Up Instructions Storage Disassemble Shipping Unit... -
Page 4: Explanation Of Signal Words
EXPLANATION OF SIGNAL WORDS Explanation of Signal Words This section contains safety information for the Oregon Rotary Cutter. Throughout this manual, the terms DANGER, WARNING, and CAUTION are used in conjunction with the Safety-Alert Symbol (a triangle with an exclamation mark) to indicate the degree of hazard for items of personal safety. -
Page 5: Specifications
SPECIFICATIONS Specifications Models OR48RC-1 OR60RC-1 OR72RC-1 3-Point Hitch Category 1 Cutting Height 2" - 9" Blade Spindle Number of Blades Blades Heat Treated Alloy Steel Blade Rotation Tractor PTO RPM Universal Drive Category 3 Side Frame Thickness 12 Gauge Tailwheel 4"... -
Page 6: Safety Rules
SAFETY RULES Safety Rules ATTENTION! Become alert! Your safety is involved! Safety is a primary concern in the design and manufacture of our products. Unfortunately, our efforts to provide safe equipment can be wiped out by an operator’s single careless act. In addition to the design and configuration of equipment, hazard control and accident prevention are dependent upon the awareness, concern, judgment, and proper training of personnel involved in the operation, transport, maintenance and storage of equipment. -
Page 7: Operation
SAFETY RULES Operation • To avoid damage to cutter or driveline, make sure driveline holder is properly stored before operation. • Do not allow bystanders in the area when operating, attaching, removing, assembling, or servicing equipment. • Full chain, rubber, or steel band shielding must be installed when operating in populated areas or other areas where thrown objects could injure people or damage property. -
Page 8: Maintenance
SAFETY RULES Maintenance • Before performing any service or maintenance, disconnect driveline from tractor PTO. • Before working underneath, disconnect driveline, raise cutter, and block cutter securely. Hydraulic system leak down and failure of mechanical or hydraulic system can cause equipment to drop. •... -
Page 9: Safety & Instructional Decals
SAFETY & INSTRUCTIONAL DECALS Safety & Instructional Decals ATTENTION! Become alert! Your safety is involved! Replace immediately if damaged! 1033176 603626 20106 1004114 18864 33347 (UNDER SHIELD) 15503 18864 1006681 PN 1004114 PN 18864 PN 1033176 MODEL # XXXXXX SERIAL # XXXXXX OREGON TOOL, INC. - Page 10 SAFETY & INSTRUCTIONAL DECALS PN 1006681 PN 33347 PN 603626 PN 15503...
- Page 11 SAFETY & INSTRUCTIONAL DECALS Be Careful! • Keep safety decals clean and visible. Use a clean, damp cloth to clean safety decals. • Avoid spraying too close to decals when using a pressure washer; high-pressure water can enter through very small scratches or under edges of decals causing them to peel or come off.
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Page 12: Operation
OPERATION Operation The intended use of this standard-duty cutter is for grass • A minimum 20% of tractor and equipment weight must be on the tractor front wheels when attachments and weed mowing applications. are in transport position. Without this weight, front The operator is responsible for the safe operation of the tractor wheels could raise up resulting in loss of cutter. -
Page 13: Driveline Attachment
OPERATION Figure 2. Standard Hitch and Quick Hitch Configurations Driveline Attachment Installation and Removal of Driveline (Tractor PTO) CAUTION To Install: Pull locking collar back and at the same time push Make sure driveline will not bottom out at the driveline onto tractor PTO shaft until locking device shortest length and that it has at least 4"... -
Page 14: Shortening Driveline
OPERATION Shortening Driveline 5. Cut the shield to the overall dimension. 1. Move cutter up and down to get the shortest possible distance between tractor PTO shaft and gearbox input shaft. 2. Separate driveline into two halves and connect them to the tractor PTO and gearbox. -
Page 15: Driveline Interference Check
OPERATION Driveline Interference Check 3. Control cutting height with tractor 3-point arms, rear tailwheel adjustment. 1. Check for clearance between driveline and cutter deck. 4. To raise rear of cutter, move tailwheel arm down. 2. Slowly lift cutter and observe driveline. If clearance 5. -
Page 16: Pre-Operation Check List
OPERATION Pre-Operation Check List 3. Move slowly into material. Adjust tractor ground speed to provide a clean cut without lugging the tractor engine. Use (Owner's Responsibility) a slow ground speed for better shredding. Review and follow all safety rules and safety decal Proper ground speed will depend on the terrain and the instructions on page 6 through page 11. -
Page 17: Storage
OPERATION Storage WARNING Keep children and bystanders away from storage area. 1. Disconnect cutter driveshaft and secure up off ground. Raise cutter with 3-point hitch. 2. Place blocks under cutter side skids. 3. Lower cutter onto blocks. 4. Disconnect cutter from tractor 3-point hitch and carefully drive tractor away from cutter. -
Page 18: Owner Service
OWNER SERVICE Owner Service The information in this section is written for operators who • Do not modify or alter or permit anyone else to modify or alter the equipment or any of its components in any possess basic mechanical skills. If you need help, your way. -
Page 19: Lubrication Information
OWNER SERVICE Lubrication Information Driveline Lubrication 1. Lubricate the driveline slip joint every eight operating 1. Do not let excess grease collect on or around parts, hours. Failure to maintain proper lubrication could result in particularly when operating in sandy areas. damage to U-joints, gearbox, and driveline. -
Page 20: Blade Servicing
OWNER SERVICE Blade Servicing Blade Installation (Figure 11) Blade Removal (Figure 11) CAUTION NOTICE • Your dealer can supply genuine replacement blades. Substitute blades may not meet original equipment • When sharpening blades, grind the same amount specifications and may be dangerous. on each blade to maintain balance. -
Page 21: Slip Clutch Adjustment
OWNER SERVICE Slip Clutch Adjustment Driveline Shear Bolt Replacement The slip clutch is designed to slip so that the gearbox and NOTICE driveline are protected if the cutter strikes an obstruction. Always use approved 1/2" NC x 3" grade 2 shear bolt A new slip clutch or one that has been in storage over the as a replacement part. -
Page 22: Shielding Repair
OWNER SERVICE Shielding Repair Cleaning After Each Use DANGER • Remove large debris such as clumps of dirt, grass, crop residue, etc. from machine. Full shielding must be installed when operated in • Inspect machine and replace worn or damaged parts. populated areas or other areas where thrown objects could injure people or damage property. -
Page 23: Troubleshooting
TROUBLESHOOTING Troubleshooting Mowing Conditions PROBLEM POSSIBLE CAUSE SOLUTION Grass cut lower in center of swath than at edge Height of cutter lower at rear or front Adjust cutter height and attitude so that cutter rear and front are within 1/2" of same height. Streaking conditions in swath Conditions too wet for mowing Allow grass to dry before mowing. -
Page 24: Dealer Service
DEALER SERVICE Dealer Service The information in this section is written for dealer service Seal Installation personnel. The repair described here requires special skills NOTE: Proper seal installation is important. An improperly and tools. If your shop is not properly equipped or your installed seal will leak. -
Page 25: Seal Repair
DEALER SERVICE Seal Repair 6. Fill gearbox with SAE 80W or 90W gear lube until it runs out the side level plug. (Figure 16) 7. Remove and replace any seal damaged in installation. Vertical Shaft Seal Repair Horizontal Shaft Seal Repair 1. -
Page 26: Disassemble Gearbox
DEALER SERVICE Disassemble Gearbox Reassemble Gearbox (Figure 16) (Figure 16) 1. Remove vent plug (24) of gearbox and pour out remaining 1. Clean housing, paying specific attention to areas where gear oil. gaskets will be installed. 2. Support housing in vise with the input shaft in a horizontal 2. -
Page 27: Crossbar Removal
DEALER SERVICE 13. Check that the gear backlash is between 0.006” and 0.016”. The backlash can be increased or decreased by adding or removing gaskets between the input cap and housing. Once the backlash is correct add RTV silicone to the input cap face. -
Page 28: Crossbar Installation
DEALER SERVICE 6. For removal with puller screw, attach tube (5) to each clevis with bolts (2) and nuts (3). Place pad (4) in nut and thread puller screw (6) into nut from bottom. Tighten until pad is solid against gearbox shaft. For best results, strike head of puller screw with a hammer while tightening with a wrench. - Page 29 DEALER SERVICE U-Joint Disassembly 3. Clamp cup in vise as shown in Figure 24 and tap on yoke to completely remove cup from yoke. Repeat Step 2 and Step 1. Remove external snap rings from yokes in four locations 3 for opposite cup. as shown in Figure 22.
- Page 30 DEALER SERVICE U-Joint Assembly 1. Place seals securely on bearing cups. Insert cup into yoke from outside and press in with hand pressure as far as possible. Insert journal cross into bearing cup with grease fitting away from shaft. Be careful not to disturb needle bearings.
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Page 31: Assembly Instructions
ASSEMBL Y INSTRUCTIONS Assembly Instructions WARNING Dealer Set-Up Instructions Make sure attachment is properly secured, adjusted, Assembly of this cutter is the responsibility of the dealer. and in good operating condition. It should be delivered to the owner completely assembled, lubricated, and adjusted for normal cutting conditions. -
Page 32: Assemble Cutter
ASSEMBL Y INSTRUCTIONS Assemble Cutter (Figure 28) 4. Rotate Lift Arms (4) upward and attach to Break Links (3) using Sleeves (5), 5/8 NC x 2-1/2 cap screws (15), and 5/8 1. Attach Tailwheel Bracket (9) and Lift Arms (4) to cutter rail NC flange lock nuts (16). -
Page 33: Install Driveline
ASSEMBL Y INSTRUCTIONS Install Driveline Driveline Slip Clutch (Figure 29) NOTICE Select either the standard shear bolt or optional slip clutch A grade 8 bolt must be used to attach clutch driveline driveline. to gearbox. Shear Bolt Driveline A new slip clutch, or one that has been in storage over the winter, may seize. -
Page 34: Fill Gearbox
ASSEMBL Y INSTRUCTIONS Fill Gearbox NOTICE Gearbox is not filled at the factory. Prior to delivery to customer, make sure gearbox is filled only half-full with 80W or 90W API GL-4 or GL-5 gear lube. Use side plug to remove any excess oil. 1. -
Page 35: Parts Index
PARTS INDEX Parts Index Main Assembly... -
Page 36: Main Assembly Parts List
M24 x 2.0P Slotted nut 1038326RP Belt bar - OR48RC-1 33mm x 56mm x 4mm Washer 1037874RP Belt bar - OR60RC-1 630737 Decal, Model 480RC, Oregon 1037914RP Belt bar - OR72RC-1 630740 Decal, Model 600RC, Oregon 1028815RP Tailwheel clevis 630742... -
Page 37: Gearbox/Blade/Drive Assembly
PARTS INDEX Gearbox/Blade/Drive Assembly PART DESCRIPTION PART DESCRIPTION 1038350 Gearbox - OR48RC-1 15345 Retaining ring, .05 x 1.38 1038352 Gearbox - OR60RC-1 1037875 Vent plug 1038351 Gearbox - OR72RC-1 19024 5/8 NC x 1-3/4 HFS GR5 1002048 Clutch shield 19025 * 5/8 NC Flange lock nut 1037896RP Crossbar assembly - OR48RC-1... -
Page 38: Gearbox Assembly
PARTS INDEX Gearbox Assembly PART DESCRIPTION PART DESCRIPTION 1038350 Gearbox - OR48RC-1 1018328 Output seal 1038352 Gearbox - OR60RC-1 1018331 1" - 14 Slotted flange nut 1038351 Gearbox - OR72RC-1 ----- Cotter pin ----- Housing ----- Output cap ----- Input cap ----- Output gasket (0.30mm) 1018326... -
Page 39: Slip Clutch Driveline Assembly
PARTS INDEX Slip Clutch Driveline Assembly PART DESCRIPTION PART DESCRIPTION 1038322 Complete drive - RC42.20 ----- Special hub F10 1038323 Complete drive - OR48RC-1, OR60RC-1 ----- Pressure plate 1038324 Complete drive - OR72RC-1 ----- End plate ----- Complete collar yoke C12 1-3/8 - 6 ----- Bolt &... -
Page 40: Bolt Torque Chart
BOLT TORQUE CHART Bolt Torque Chart Always tighten hardware to these values unless a different torque value or tightening procedure is listed for a specific application. Fasteners must always be replaced with the same grade as specified in the manual parts list. Always use the proper tool for tightening hardware: SAE for SAE hardware and Metric for metric hardware. -
Page 41: Metric Series Torque Chart
BOLT TORQUE CHART Metric Series Torque Chart Metric Bolt Head Identification Metric Metric Grade 8 8 Grade 10 9 Coarse Thread Fine Thread Marking on Head Marking on Head Diameter & Diameter & Metric 8.8 Metric 10.9 Metric 8.8 Metric 10.9 Thread Pitch Thread Pitch (Millimeters) -
Page 42: Bolt Size Chart
BOLT SIZE CHART Bolt Size Chart NOTICE Chart shows bolt thread sizes and corresponding head (wrench) sizes for standard SAE and metric bolts. SAE Bolt Thread Sizes 5/16 10mm 12mm 14mm 16mm 18mm Metric Bolt Thread Sizes Abbreviations Agriculture HHCS Hex Head Cap Screw ORBM O-Ring Boss - Male... -
Page 43: Limited Warranty
LIMITED WARRANTY Limited Warranty This 3-point implement is guaranteed to be free from defects in material and workmanship for the normal service life of the product not to exceed 12 consecutive months from the date of purchase. • Oregon will repair or replace at Oregon’s sole discretion, free of charge, any part or parts of the 3-point implement that are judged to be defective in material or workmanship during the limited warranty period stated above. - Page 44 Oregon Tool, Inc. 4909 SE International Way Portland, Oregon 97222 USA 800-525-8322 OregonProducts.com 630738 AA 12/21...
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