Instruction & Owners Manual 5"Chipper Models 74520 74554 Crary Company Box 849 West Fargo, ND 58078 (701) 282-5520 • (800) 247-7335 FAX: (701) 282-9522 www.crary.com Cat. No. 12666 Manual No.
Dear Bear Cat Customer, How to Contact Bear Cat Thank you for purchasing a Crary Bear Cat Chipper. The Bear Cat Chipper is designed, tested, and manufactured to give years of dependable performance. To keep your chipper operating at peak efficiency, it is necessary to adjust it correctly and make regular inspections. The following pages will assist you in the operation and maintenance of your machine. Please read and understand this manual before operating the chipper.
Chipper Limited Warranty Crary Bear Cat Chipper models 74520 and 74554 are warranted for two years from date of sale for consumers and 90 days from the date of sale for commercial or rental operations. Within the above stated period, Crary Co. will replace any part(s) found to be defective in material and/ or workmanship, after the receipt of the part in our plant. Labor costs to replace these defective parts will be paid at a Crary established labor rate and time allowed (flat rate) for repair.
Contents Safety Instructions ........................................................................ 2 Engine Model Assembly ............................................................... 9 Attach the Trailer Axle ............................................................................. 9 Attach the Trailer Wheels ......................................................................... 9 Attach the Hitch .......................................................................................
Safety Instructions Your safety and the safety of others is important. Valuable safety messages are provided in this manual and on the machine. Please read these messages carefully. A safety message alerts to potential hazards that could injure you or others. Each safety message is preceded by one of three words: DANGER, WARNING, or CAUTION. DANGER You WILL be KILLED or SERIOUSLY HURT if safety instructions are not followed.
Safety Instructions-Cont. CAUTION • Do not operate this machine if you are under the influence of alcohol, medications, or substances that can affect your vision, balance, and judgement. Do not operate if tired or ill. You must be in good health to operate this machine safely. • Shut off the engine and ensure all moving parts are stopped before inspecting or servicing any part of the machine. • Inspect the surrounding area thoroughly before using this machine.
Safety Instructions-Cont. Operation 4 • Do not allow hands, or any part of body or clothing, inside the feeding chamber, discharge chute, or near any moving part. • Operate the machine only on a level surface. Do not operate the machine on a paved, concrete, or hard gravel surface. Operating on a hard surface may cause discharged material to rebound and kickback. Increased machine vibration will also result causing machine movement and premature wear of parts or loosening of fasteners.
Safety Instructions-Cont. • A well-prepared traffic plan includes parking off the highway whenever possible. Cone the work area as soon as the chipper vehicle is stopped. Avoid sudden traffic stoppage or lane diversion. Do not allow pedestrians to walk through the work area. Ensure chips or dust do not blow into traffic, parked cars, or pedestrians. • Check the bolts on the following for correct torque (75 ft. lbs.) every 10 hours of operation: 1. Chipper rotor bearing 2.
Safety Instructions-Cont. Additional Safety Rules for PTO Models 6 • Read and follow instructions on PTO safety decals. • Stay alert and pay attention when PTO chipper is operating. • Keep bystanders, especially children, away from PTO driveline. • Connect 3 pt. hitch pins and snap pins, connect PTO driveline, and have leg stands solidly on the ground when in use to proper spacing. • Check the driveline to ensure it is attached securely to the tractor.
Safety Instructions-Cont. WARNING • Keep hydraulic hoses, electric cords, chains, and other items from contacting the driveline. • Make sure the tractor is in neutral or park and PTO is disengaged before starting the tractor. • Do not exceed the recommended 540 RPM PTO operating speed. • When this equipment is stopped for servicing, inspection, storage, or to change an accessory, make sure to disengage PTO and shut off tractor engine. • To move the unit: shut off the PTO, lift 3 pt.
Safety Instructions-Cont. Maintenance and Storage See engine owners manual or contact the engine manufacturer for engine safety instructions and decals. • Shut off machine and disconnect the spark plug wire when this equipment is stopped for service, inspection, storage, or to change an accessory. Disconnect battery. • Replace any missing or unreadable safety decals. Refer to the parts manual for part numbers when ordering safety decals from an area Bear Cat dealer.
Engine Model Assembly Your chipper may arrive totally or partially assembled. Perform the steps in this section if your chipper arrives partially assembled. Attach the Trailer Axle 1. Remove the chipper from the shipping crate. Do not operate this unit without the chipper chute correctly installed. Rotating cutting blades can cause serious personal injury. 2. Place the unit on a level surface before attempting to assemble it.
Engine Model Assembly-Cont. Before Using Fill the engine with oil (per instructions in supplied engine manual) and fill the fuel tank with fuel. Figure 1 Connect Hydraulic Harness 1. Connect 6 pin female connect on chipper chute to male connector on the roller support weldment.
PTO Model Assembly Connect PTO Shaft 1. Connect the PTO shaft female end to the rotor shaft using key stock and two set screws contained in the owners kit. 2. Connect the opposite end of the PTO shaft to the tractor. 3. Check all screws, bolts, and nuts for tightness. See torque chart on page 8 for correct tightness. Connect Hydraulic Harness 1. Remove black cover from coils located next to the engine mainfold. 2.
Operation Starting Instructions: 20 HP Engine Models Move machine to a clear, level area outdoors before starting. Do not operate machine on a paved, concrete, or gravel surface. Do not operate in the vicinity of bystanders. Make sure cutting chamber is empty before starting. Release the key if the engine fails to start within 5 seconds. Failure to release starter will overheat and possible damage the starter. Wait 10 seconds before trying again. NOTE: Normal engine output is 3600 RPM no load. 1.
Operation- Cont. Feed Sensor Instructions The feed sensor monitors the chipper rotor RPM to maximize chipping efficiency. The low RPM setting is the rotor speed when the feed roller stops. The feed sensor restarts the feed roller when the chipper rotor RPM reaches the return operating speed. This ability to automatically stop the feed roller prevents the engine from overloading and stalling. • Engine Models: The feed sensor arrives programmed at the factory to the following recommended settings.
Operation- Cont. Feed Sensor Programming Instructions Step 1. Initiating Program Mode 1. Hold down the "S" button while turning the engine key to the "on" position until "L" starts to flash on the LCD. Step 2. Enter Low (L=Low) RPM • The low setting is the RPM speed where the feed roller stops. The "up" arrow increases the RPM setting, while the "down" arrow decreases the RPM setting. Setting the speed lower causes the engine to lug down more before the feed roller stops. 1.
Operation- Cont. Chipping Please read and follow all safety instructions in this manual. Failure to operate the chipper in accordance with the safety instructions MAY RESULT IN PERSONAL INJURY! The Bear Cat chipper is designed to chip a variety of materials into a more readily decomposing or handled condition. The following guidelines can be used to help you get started. • Run unit at full operating speed before starting to chip material. • Select limbs that are up to 5 inches in diameter.
Operation- Cont. Stopping Instructions: Engine Models 1. Move throttle to slowest position. 2. Depress foot clutch pedal. 3. Turn engine switch to OFF position. 4. Turn fuel valve to OFF position. 5. Release the foot clutch pedal to help slow the rotor once the engine stops. 6. Allow machine to come to a complete stop. NOTE: The heavy rotor will continue to turn for some time after the engine stops. You can tell that the rotor has stopped when no noise or machine vibration is present.
Service and Maintenance Before inspecting or servicing any part of the machine, shut off the engine, and make sure all moving parts have come to a complete stop. The chipping blades are sharp! Use care when working on machine to avoid injury. Check the engine oil, and change the oil and filter as recommended in the engine manual. Service and replace the air cleaner as recommended. Sharpening Chipper Blades The chipper blades will eventually dull, making chipping difficult.
Service and Maintenance-Cont. • Be careful when grinding so that the blade material does not get too hot and change color if you use a bench grinder–this will remove the blade's special heat treated properties. • Use short grinding times and cool with water. • Try to remove an equal amount off each blade to maintain balance. 5. Replace the chipping blades and tighten bolts to 20 ft. lbs. 6. Close cover and replace bolts. Never grind on the back side of the chipper blade.
Service and Maintenance-Cont. Adjusting Drive Belt Check the condition of the drive belt annually or after every 25 hours of operation, whichever comes first. Replace cracked, frayed, worn, or stretched drive belt. Only replace drive belt with original banded type belt, do not use single type belts. To adjust the drive belt, proceed as follows: 1. Depress foot clutch pedal. 2. Shut engine off. 3. Disconnect battery cables. 4. Remove large belt guard (three 5/16 inch bolts). 5.
Service and Maintenance-Cont. 4. Remove drive belt from pulleys. 5. Install new belt on pulleys and lower belt idler. Check alignment of pulleys and adjust if needed. 6. Check belt tension before start-up. Adjust the eyebolt that anchors the idler spring to adjust the belt tension. Tighten the eyebolt until the belt deflection at the center of the belt is 7/16" when a 20 lb. load is placed against the belt (see figure 4). Move the engine on the mounting stand if unable to attain proper tension. 7.
Service and Maintenance-Cont 9. Replace roll pin with a new 1/2" x 2" pin, P/N 15137. 10. Return the complete rotor assembly to the chipper frame with an overhead hoist or lifting device. 11. Slide rotor back until front roll pin is tight against the front bearing. 12. Lock the front bearing and install the four 1/2 inch bolts on each bearing to secure them to the frame. Tighten bolts to 75 ft. lbs. 13. Check and adjust chipper anvil if needed. Lock rear bearing. 14.
Service and Maintenance Schedule Before Each Use Inspection Items Every 10 Hours Every 25 Hours Every 50 Hours Interval Every Every 100 200 Hours Hours Every 300 Hours Every 800 Hours Check Nuts & Bolts (Including Wheels & Tire Pressure) Check Engine Oil Replace Replace Spark Plug Check Air Filter Element Clean Replace * ** Replace Fuel Filter Check Sharpness of Chipper Blades Grease Bearings and Pivots Check Bolts: Chipper Blade, Chipper Anvil, Rotor Paddles Check Drive Belt Clean Machine Not
Troubleshooting Problem Probable Cause 1. Engine will not start. a) b) c) d) e) 2. Engine stalls or stops. a) Obstructed discharge. 3. Engine overheats. a) Cooling system plugged. b) Improper oil level Improper control settings. Lack of fuel. Internal engine problems. Spark plug disconnected. Dirty, stale, or contaminated gas. Suggested Remedies a) b) c) d) e) Use proper settings. Fill fuel tank. Contact dealer. Connect spark plug. Refill gas tank with fresh, clean unleaded regular gasoline.
Troubleshooting Problem 8. Excessive vibration while running. Probable Cause a) Drive system vibration. b) Rotor out of balance. c) Chipper blade to anvil clearance is incorrect. 9. Rotor will not turn. a) Drive belt too loose or broken. b) Obstructed discharge. c) Plugged rotor. 10.Cannot engage clutch. a) b) c) d) 11.Excessive belt wear. a) Not using correct belt. Suggested Remedies a) Check drive belts and pulleys for bad or worn areas. Check PTO shaft for wear. Dull chipper blades.
Specifications Overall Size: 150" x 73" x 90" Max Chipper Capacity (dia.): 5" Chipper Blade Qty.: 4 Reversible Tool Steel Rotor Size: 20" Dia. x 1.25" Rotor Weight: 140 lbs. Rotor Shaft Diameter: 1.75" Discharge Size: 6" Drive Type: Belt Belt Size: 2B70 Weight (lbs.): 1490 lbs. (engine) 900 lbs. (PTO) Wheel Base: 62" Tires: 225/75/15 Fuel Tank Capacity (gal.): 6.6 Hydraulic Tank Capacity (gal.
Specifications 26
Specifications 27
Declaration of Conformity The undersigned manufacturer: Crary Industries, Inc. 237 NW 12th Street P.O.
HEALTH WARNING GASOLINE, DIESEL, AND OTHER PETROLEUM PRODUCTS Harmful or fatal if swallowed. Long-term exposure to vapors has caused cancer in laboratory animals. • Avoid prolonged breathing of vapors. • Keep face away from nozzle and gas tank/container opening. • Never siphon by mouth. Failure to use caution may cause serious injury or illness.
