Chipper and Hydraulic Feed Instruction & Owners Manual Chipper Models: 72928 (28 HP Diesel) 72942 (42 HP Ford) Crary Company Box 849 West Fargo, ND 58078 (701) 282-5520 (800) 247-7335 FAX: (701) 282-9522 Manufactured in the United States of America by Crary Company Cat. No. 16783 Manual No.
BEARCAT Dear Bear Cat Customer, 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.
WARRANTY Chipper and Hydraulic Feed Limited Warranty Crary Bearcat Chipper models 72928 and 72942 are warranted for one year from date of sale. 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 Contents Section 1: Safety Instructions ................................... 2 1.2 Safety Decals .................................................................................... 4 Section 2: Assembly, Controls, and Operation ....... 5 2.1 Assembly .......................................................................................... 5 2.1.1 Attach the Trailer Wheels ............................................................ 5 2.1.2 Attach the Pintle Hitch ................................
SECTION 1 Safety Instructions This chipper is designed and tested to offer reasonably safe service. However, failure to operate it in accordance with the following safety instructions MAY RESULT IN PERSONAL INJURY! Before Operating 1. Become familiar with the owner's manual before attempting to operate this equipment. See engine owner's manual for additional safety information. 2. Do not allow children to operate this equipment. 3. Do not operate this equipment in the vicinity of bystanders. 4.
SECTION 1 • Chipper anvil Failure to maintain proper fastening torque (75 ft. lbs.) on bolts for the components listed above may result in severe damage to the chipper and/or personal injury! 5. Do not allow processed material to build up in the discharge area; this may prevent proper discharge and can result in kickback of material through the feed opening. 6. Do not attempt to operate the chipper with any of the guards, deflectors, or shrouds removed. Keep away from moving parts. 7.
SECTION 1 PN 17423 PN 16085 Safety Decals Safety and instruction decals are located on the chipper frame and engine. Replace any decal that is damaged or unreadable. Call dealer for information on decals in Spanish, French, or other languages. For location of safety decals on the chipper frame, see parts drawings and lists in section 4. NOTE: For engine safety and instruction decals, see engine owner's manual or contact the engine manufacturer.
SECTION 2 Assembly Your chipper may arrive totally or partially assembled. If your chipper arrives partially assembled, you may need to perform the steps in this section. 2.1.1 Attach the Trailer Wheels 1. Remove the chipper from its shipping crate. Place the unit on a level surface before attempting to assemble it. See the Torque Chart at the bottom of this page for minimum tightening torque of bolts and screws. 2. Raise the trailer several inches from the ground with a hoist or jack.
SECTION 2 2.1.3 Attach the Chipper Chute Do not operate this unit without the chipper chute correctly installed. Rotating cutting blades can cause serious personal injury. Hydraulic Feed Mount the chipper chute to the hydraulic feed using eight 3/8" x 1" bolts and locknuts. To insert the top bolts, you may need to temporarily lift the grab roller with a pry bar. Use three bolts on each side and two on the bottom (see figure 2.2). Chipper Chute 2.1.4 Attach the Chute Extension Tray 1.
SECTION 2 2.1.7 Adjusting the Hydraulic Feed Control Cable Blower Discharge Tube Figure 2.6 shows the hydraulic feed control cable assembly and the detent position slots. The cable is attached and adjusted from the factory, but it should be checked and adjusted as needed before use.
SECTION 2 2.1.8 Before Using 1. Install battery (not included: use group 22F 300 CCA min), connect positive and ground battery cables, and check battery condition. Charge if needed. Note:If needed, a larger group UB72 battery may be used. Use caution when connecting battery cables near fuel. A spark could ignite the fuel and cause a fire. 2. Fill the engine with oil (per instructions in supplied engine manual) and fill the fuel tank with fuel.
SECTION 2 2.2 Identification control, Murphy switch, gauges, and choke control (gas engine models only). 1. Extension Tray: Assists in feeding chipping material. Folds for towing. 7. Fuel Tank: Fuel level indicator is located on top. 8. Pintle Hitch: Always use safety chains when towing chipper. 2. Feed Control Lever: Move the arm forward to increase the feed rate. Push back to reverse the feed. 9. Pivoting Tongue Jack: Always have in UP position and clear from ground when moving.
SECTION 2 2.3 Operation 2.3.1 Starting: 28 HP Kubota Model drive belt and the rotor will turn. If the engine kills when engaging the drive belt, release foot clutch pedal more slowly. CAUTION: 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. 10.
SECTION 2 2.3.3 Starting: 42 HP Ford Models CAUTION: 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. 1. Before starting, fill engine with oil to the correct level. See engine manual for additional starting, operation, and maintenance instructions. NOTE: Some oil usage is normal. Check level with each use.
SECTION 2 2.4 Chipping 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. 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! 1. Be sure the unit is at full operating speed before you start to chip material. 2. Select limbs that are up to 9 inches in diameter.
SECTION 2 Electronic Feed Sensor:Installation Instructions for Models 928 & 942 10. Mount the speed switch bracket to the center bolt 1. Remove belt guard. *If serial number is equal to or greater to 19317 skip to step 9. 2. Losen hydraulic pump mount and remove pump drive belt. 3. Remove chipper drive belt. 4. Remove the pump and chipper-driven pulley from the rotor shaft. in the chipper base.(Ref #6) 11. Replace the crossover relief valve with the new valve suppled with the valve kit.
SECTION 2 and attach the ground wires to the frame. Route positive to engine. (See wiring diagram)(Ref #4) 14. Mount speed switch and route wires according to wiring diagram. 15. Attach cover over speed switch with two self tapping screws. 16. Replace the belt guard. 17. Attach the chipper to the tow vehicle. 18. Operate the chipper per manual instructions. NOTE: When approaching the end of a log, it might be necessary to manually override the automatic feed sensor.
SECTION 3 Service and Maintenance Inspection Items Before Each Use Every 10 Hours Every 25 Hours Every 50 Hours Interval Every 100 Hours Every 200 Hours Every 400 Hours Every 800 Hours Every 1 years Check Nuts & Bolts Engine Oil Level Change Engine Oil Replace Oil Filter Cartridge Check Hydraulic Fluid Level (3 Gallons) Replace Air Filter Element Replace Fuel Filter Check Sharpness of Chipper Blades Grease Bearings and Pivots Check Bolts: Chipper Blade, Feed Roller, Chipper Anvil, Rotor Paddles
SECTION 3 Service and Maintenance WARNING: 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. and cool with water. Try to remove an equal amount off each blade to maintain balance. Replace the chipping blades and tighten bolts to 75 ft. lbs. Close cover and replace bolts. WARNING: The rotor assembly has a lock mechanism.
SECTION 3 • ground smooth. 3.1.3 Adjusting Drive Belt The base of the cutting edge is worn or has been resharpened so that it is too close to the rotor chipping slot. Check the condition of the drive belt annually or after every 25 hours of operation, whichever comes first. If the belt is cracked, frayed, worn, or stretched, replace it. Only replace belt with original banded type belt, do not use single type belts. To adjust the belt, proceed as follows: 3.1.
SECTION 3 20 lb. load is placed against the belt (see figure 3.4). 6. Replace hydraulic pump belt. Readjust hydraulic pump belt tension by sliding the hydraulic pump in the mounting slots. Tighten bolts. 7. Replace belt guard. 8. Depress foot clutch pedal, start engine, release foot clutch pedal to engage belt, and test unit. Readjust pulleys and belt tension if needed. 3.1.
SECTION 3 15. Depress foot clutch pedal, start engine, release foot clutch pedal to engage belt, and test unit. Readjust pulleys and belt tension if needed. 3.1.7 Greaseable Bearings and Pivots 4. When towing, always connect the safety chains. Make sure trailer hitch bolts are tight and secure. 5. Check trailer lights. The chipper has five greaseable bearings and pivots that require grease every 50 hours: • Two bearings on the rotor shaft. • One greaseable bushing on the foot pedal pivot.
TROUBLESHOOTING Troubleshooting Problem Probable Cause Suggested Remedies Reference 1. Rotor does not turn a) Obstructed discharge b) Plugged rotor a) Use branch or similar object to clear discharge b) Clear rotor Service and Maintenance 2. Hard to feed chipper or excessive power needed to chip a) Obstructed discharge b) Dull chipper blades c) Improper blade clearance a) Use branch or similar object to clear discharge b) Sharpen blades c) Adjust clearance Service and Maintenance 3.
SPECIFICATIONS Specifications Model 72928 Model 72942 Overall Size (LxWxH) 119" x 79" x 89" 119" x 79" x 89" Max. Chipper Cap. (dia.) 9" 9" Chipper Blade Qty. 4 Reversible Tool Steel 4 Reversible Tool Steel Rotor Speed 1500 RPM 1500 RPM Rotor Size 30" Dia. x 1.25" 30" Dia. x 1.25" Rotor Weight 275 lbs. 275 lbs. Rotor Shaft Diameter 1.75" 1.75" Discharge Size 8" 8" Drive Type Belt Belt Belt Size 3B83 3B85 Weight (Lbs.
SECTION 3 Replacement & Maintenance Chart Note: When ordering replacement parts, be sure to identify the Model and Serial number of the machine.
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.
