- Model BR-3 Blade Reconditioner EQUIPMENT SELECTION.......... Ordering No. TABLE OF CONTENTS............................ Page Model BR-3 (100 mm Blade) 115V/60Hz............ 4011003 220V/50Hz............ 4011009 Model BR-3A (110 mm Blade) 115V/60Hz............ 4011004 220V/50Hz............ 4011010 Notice to Employer and Safety Director................................. 2 Notice to Operators, Maintenance and Cleanup Personnel................... 3 Parts Diagram and List.................... 4 Specifications............................ 9 Installation Instructions.................... 9 Operation Instructions..................... 9 Maintenance Instructions................. 11 TEL. 860-347-7271 FAX. 860-347-6978
notice to employer and safety director Model BR-3 page 2 of 12 Wear eye protection. NOTICE TO EMPLOYER AND SAFETY DIRECTOR AVOID INJURY 1. Remove and repair any machine that malfunctions. All personnel must be instructed to remove any malfunctioning equipment. 2. Ensure that all employees who use these machines are trained in the proper use of these machines and are aware of the dangers that may arise if they do not follow procedures outlined in this brochure. 3. Enclosed are four (4) copies of NOTICE TO OPERATORS, MAINTENANCE AND CLEANUP PERSONNEL. Post one copy on the employees bulletin board; give one copy to the operator(s); give one copy to the maintenance foreman; and give one copy to the sub-contract cleanup / internal cleanup foreman. Additional copies will be provided upon request. 4. The machine is designed and intended to be powerful. This fact should be obvious to your employees, but you must emphasize it to them. 5. Never make modifications or alterations to the machine. Replace any missing or illegible labels. 6. Ensure that proper procedures are established to prevent accidental startup. 7. Follow our installation and maintenance instructions for proper installation and care of the machine. 8. Ensure that employees wear eye protection in accordance with OSHA s eye and face protection requirements (29 CFR 1910.133) at all times. 9. Avoid injury. Do not permit the machine to be misused. 10. If you resell or distribute a Jarvis product, you must provide the purchaser with the appropriate safety sheets and machine brochure. Additional copies of safety sheets and machine brochures will be provided upon request.
notice to operators, maintenance and cleanup personnel page 3 of 12 Model BR-3 Wear eye protection. NOTICE TO OPERATORS, MAINTENANCE AND CLEANUP PERSONNEL REMOVE ANY MALFUNCTIONING MACHINE FROM SERVICE REPORT ANY PROBLEMS TO YOUR SUPERVISOR 1. Disconnect the electric power supply before performing any repairs or maintenance. 2. Disconnect the electric power supply or have the electric power supply disconnected before performing any cleanup. 3. Disconnect the electric power supply when the machine is not in use. 4. Always check grinding wheels for possible damage. Do not use damaged grinding wheels. 5. Never put fingers, hands or other parts of the body on the grinding edge or within the path of the grinding wheels when the machine is connected to its power supply. 6. Turn the switch clockwise and the machine should start. Turn the switch counterclockwise and the machine should stop. If the machine malfunctions, remove it from service and report or repair it immediately. 7. Never turn the switch unless you want to use the machine. 8. Never make modifications or alterations to the machine. Report or replace any missing or illegible labels. 9. Always wear eye protection in accordance with OSHA s eye and face protection requirements (29 CFR 1910.133) at all times. 10. Always wear cut protective gloves while operating the machine and handling the blades.
parts diagram and list Model BR-3 page 4 of 12 ITEM PART NO. PART NAME 1 3003004 Cup Wheel Dresser Assembly 1 See page 6 for detail. 2 3018014 Hollow Grind Lever Assembly 1 See page 7 for detail. 3 3008049 Motor and Base Assembly 1 See page 5 for detail. 4 3003002 Formed Wheel Dresser Assembly 1 See page 6 for detail. 5 3033003 Blade Grinding Index Assembly (100 mm) 1 See page 8 for detail. 3033005 Blade Grinding Index Assembly (110 mm) See page 8 for detail. QTY
parts diagram and list page 5 of 12 Model BR-3 MOTOR AND BASE ASSEMBLY 1 1007098 Hex Nut 1 2 1044012 Retaining Flange 1 3 1057001 Grinding Wheel (100 mm) 1 1057036 Grinding Wheel (110 mm) 4 1011111 Cup Wheel Coupling 1 5 1054038 Special Screw 4 6 1007099 Hex Jam Nut 1 7 1044019 Cup Wheel Flange 1 8 1513143 Socket Head Cap Screw 8 9 1004015 Split Lock Washer 12 10 1024031 Cup Wheel Guard 1 11 3008074 Electric Motor (0.5HP) 1 12 1024032 Formed Wheel Guard 1 13 1011112 Spacer 1 14 1052001 Wheel Forming Template 1 15 1055024 Socket Head Cap Screw 1 16 1044020 Flanged Hub 1 17 1057002 Formed Grinding Wheel 1 18 1044021 Flange 1 19 1007097 Formed Wheel Lock Nut 1 20 1002096 Formed Wheel Cover 1 21 1055051 Socket Head Cap Screw 3 22 1063073 Light Bulb (115V) 1 1063475 Light Bulb (220V) 23 1024005 Eye Guard (includes 1 items 22 (115V) and 24) 24 1055296 Hex Head Screw 2 25 1513164 Socket Head Cap Screw 1 26 1007021 Hex Jam Nut 1 27 1011052 Strain Relief Connector 1 28 1055221 Socket Head Shldr Screw 4 29 1560684 Operator Switch 1 30 1560692 Contact Block 1 31 1017024 Switch Label 1 32 1042067 Motor Support 1 33 1004020 Flat Washer 5 34 1055327 Hex Head Screw 4 35 1004005 Split Lock Washer 1 36 1055223 Round Head Slotted Screw 1 37 1063045 Capacitor w/bracket 1 38 1010027 Dowel Pin 2 39 1041011 Grinder Base 1 40 1017159 Caution Label 1 41 1017012 Warning Label 1 42 1017001 Information Label 1 43 1513040 Socket Set Screw 1 44 1515071 Dowel Pin 1 45 1513042 Socket Set Screw 2 3005005 Switch Assembly (includes items 29-31)
parts diagram and list Model BR-3 page 6 of 12 FORMED WHEEL DRESSER ASSEMBLY 1 1519140 Woodruff Key 1 2 3054006 Template Screw Assembly 1 3 1033004 Index Gear 1 4 1514502 Retaining Ring 1 5 1513025 Socket Set Screw 3 6 1003002 Diamond Dresser 1 7 1055030 Socket Set Screw 3 8 1010053 Spiral Pin 1 9 1011047 Universal Joint Coupling 1 10 1004016 Flat Washer 2 11 1055164 Socket Head Cap Screw 1 12 1010130 Coupling Pin 1 13 1018015 Dresser Lever 1 14 1039002 Ball Plunger 1 15 1019011 Handle 1 3018005 Dresser Lever Assembly (includes items 1-5, 7-9, 12-13) 3033001 Dresser Index Assembly (includes items 1-4) 3003002 Formed Wheel Dresser Assembly Complete (includes 1-15 and Page 5, items 13-15) 1 1055030 Socket Set Screw 1 2 1018044 Dresser Lever 1 3 1013010 Retaining Ring 1 4 1020014 Pivot Shaft 1 5 1021010 Ball Bearing 2 6 1029088 Spacer 1 7 1055034 Socket Head Cap Screw 2 8 1029013 Spacer 1 9 1546017 Bottom Spacer 1 10 1055033 Button Head Cap Screw 1 11 1010079 Dowel Pin 2 12 1016096 Lever Housing 1 13 1010131 Roll Pin 1 14 1003003 Wheel Dresser 1 15 1010018 Roll Pin 1 16 1006005 Hand Knob 1 3003001 Wheel Dresser Assembly (includes items 14-16) 3003004 Cup Wheel Dresser Assembly Complete (includes items 1-16) CUP WHEEL DRESSER ASSEMBLY
parts diagram and list page 7 of 12 Model BR-3 HOLLOW GRIND LEVER ASSEMBLY 1 1055090 Button Head Cap 1 2 1004015 Split Lock Washer 1 3 1055378 Button Head Cap Screw 3 4 1013087 Bearing Retaining Ring 1 5 1013004 Retaining Ring 1 6 1021002 Bearing 2 7 1029001 Spacer 1 8 1013003 Retaining Ring 1 9 1009002 Sleeve with Pin 1 10 1013091 Retaining Ring 1 11 1014037 Compression Spring 1 12 1013090 Locking Ring 1 13 1020070 Blade Holder Shaft 1 14 1061041 Steel Ball 3 15 1010179 Dowel Pin 1 16 1044022 Blade Retaining Flange 1 17 1010134 Dowel Pin 1 18 1513025 Socket Set Screw 2 19 1010187 Roll Pin 1 20 1513042 Socket Set Screw 1 21 1519263 Set Screw Collar 1 22 1572209 Cylindrical Bearing 2 23 1016097 Shaft Housing 1 24 1035117 Oil Seal 1 25 1020069 Sliding Shaft 1 26 1036068 Guide Bushing 1 27 1002097 Dust Cover 1 28 1513029 Socket Set Screw 2 29 1018043 Hollow Grind Lever 1 30 1021106 Roller Clutch Bearing 1 31 1009052 Anti-Roll Back Sleeve 1 32 1019004 Crank Handle 1 3044007 Blade Rtg. Flange Assy. (includes items 15-16) 3020015 Blade Holder Shaft Assy. (includes items 10-16) 3018014 Hollow Grind Lever Assy. Complete (includes items 1-32, and Page 5, items 43-45)
parts diagram and list Model BR-3 page 8 of 12 BLADE GRINDING INDEX ASSEMBLY 1 1006018 Knob Assembly (110 mm) 1 3006001 Knob Assembly (100 mm) 2 1044012 Blade Rtg. Flange (100 mm) 1 1044033 Blade Rtg. Flange (110 mm) 3 1026033 Index Gear (100 mm) 1 1026059 Index Gear (110 mm) 4 1513143 Socket Head Cap Screw 1 5 3054008 Adjusting Screw Assembly 1 6 1010016 Roll Pin 1 7 1014036 Compression Spring 2 8 1039018 Brake Plunger 2 9 1042007 Index Lever Bracket 1 10 1010021 Groove Pin 2 11 1014005 Extension Spring 1 12 1010135 Groove Pin 1 13 1053004 Indexing Pawl 1 14 1013015 Retaining Ring 1 15 1010023 Groove Pin 1 16 1055037 Socket Head Cap Screw 1 17 1036104 Eccentric Bushing 1 18 1010019 Dowel Pin 1 19 1004055 Flat Washer 1 20 1010086 Roll Pin 2 21 1007095 Hex Jam Nut 1 22 1014002 Extension Spring 1 23 1055075 Socket Set Screw 1 24 1018011 Indexing Lever 1 25 1020003 Pivot Shaft 2 26 1036008 Cylindrical Bushing 2 27 1046005 Index Support Frame 1 28 1006011 Hand Knob 1 29 1004012 Plain Washer 1 30 1027024 Stud 1 31 1020002 Shaft 1 32 1055035 Socket Head Cap Screw 4 33 1004003 Lock Washer 5 34 1021008 Pillow Block Bearing 2 35 1055026 Socket Set Screw 5 36 1055030 Socket Set Screw 1 37 1010024 Roll Pin 1 38 1021009 Ball Bearing 1 39 1004017 Flat Washer 2 40 1055028 Socket Head Cap Screw 1 41 1513409 Button Head Cap Screw 3 42 1541060 Flat Washer 3 43 1041005 Index Mounting Base 1 3036006 Eccentric Bushing Assy. (includes items 17-18) 3053002 Indexing Pawl Assembly (includes items 9, 12-15, 21, 23-24) 3033004 Kit, 100mm to 110mm 3033006 Kit, 110mm to 100mm
specifications, installation instructions and operation instructions page 9 of 12 Model BR-3 SPECIFICATIONS Operating Voltage: 115V, 1ph, 60Hz other voltages and frequencies available Motor Power: 375 Watts 0.5 hp Overall Dimensions: 28 x 20 x 17 in 711 x 508 x 432 mm Weight: 107 lbs 48.5 kg INSTALLATION INSTRUCTIONS IMPORTANT: ALWAYS DISCONNECT THE ELEC- TRIC POWER SUPPLY BEFORE PERFORMING ANY REPAIRS OR MAINTENANCE. 1 Place the BR-3 in a convenient location away from the dehider assembly/repair area. 2 Plug the 115V/60Hz models into a standard 115V wall outlet. All wall outlets must be grounded. 3 Check grinding wheels for possible damage. Do not use if grinding wheel(s) are damaged. 4 Stand away from the front of the BR-3 and run the BR-3 for 1 minute before using. 5 Ensure that the motor rotation is correct: the grinding wheel (item 3, page 5) rotates to the right. 6 Use a dust collector while dressing the formed grinding and grinding wheels. OPERATION INSTRUCTIONS IMPORTANT: ALWAYS CHECK NEW GRINDING WHEELS FOR POSSIBLE DAMAGE. DO NOT USE DAMAGED GRINDING WHEELS. ALWAYS WEAR CUT PROTECTIVE GLOVES WHILE OPERATING THE MACHINE AND HAN- DLING THE BLADES. Note: always keep dehider blades as a matched set. 1 HOLLOW GRIND WHEEL DRESSING. Refer to page 6, Cup Wheel Dresser Assembly. 1.1 Advance wheel dresser (item 14) two or three thousands of an inch by turning hand knob (item 16) clockwise. (approx. 1/4 turn). 1.2 Ensure that wheel dresser (item 14) is snug; if not, adjust set screw (item 1) accordingly. 1.3 Turn on the motor. 1.4 Bring the dresser lever (item 2) toward the grinding wheel (item 3, page 5) and let the diamond head of the dresser pass across the face of the grinding wheel slowly. 1.5 Turn off the motor. 2 HOLLOW GRIND. Refer to page 7, Hollow Grind Lever Assembly. 2.1 Remove the blade retaining flange (item 16) from the blade holder shaft (item 13) by pulling the locking ring (item 12). 2.2 Place one dehider blade, with the hollow side facing the grinding wheel (item 3, page 5), on the blade retaining flange (item 16). 2.3 Re-insert the blade retaining flange (item 16) on the blade holder shaft (item 13). 2.4 Turn on the motor. 2.5 Slide the hollow grind lever (item 29) toward the grinding wheel (item 3, page 5) with hand pressure and at the same time rotate the crank handle (item 32) at approximately 100 rpm. Do not grind any longer than 5 seconds. 2.6 Examine the blade and repeat step 2.5 until the hollow grind extends to the tip of the dehider blade teeth. 2.7 Repeat steps 2.1-2.6 with the remaining blade.
operation instructions Model BR-3 page 10 of 12 2.8 Turn off the motor. 3 GRINDING WHEEL DRESSING. Refer to page 6, Formed Wheel Dresser Assembly. 4.5 Turn on the motor. 4.6 Set depth of cut. Use adjusting screw assembly (item 5) to obtain roughly a 0.08 inch (2 mm dub). Before grinding each set of blades, you must dress the preformed wheel. 3.1 Rotate the index gear (item 3) clockwise one tooth. 3.2 Lift handle (item 15) to engage the template screw (item 2) against the groove of the wheel forming template (item 14, page 5). Each pass of the dresser across the face should take about three seconds. 4 DUBBING. Refer to page 8, Blade Grinding Index Assembly. 4.1 Loosen hand knob (item 28) and raise indexing lever (item 24) until index mounting base (item 43) will go up no further. Tighten the hand knob. 4.2 Remove knob assembly (item 1) and retaining flange (item 2). Place a matched set of blades on index gear shaft (item 3) with hollow sides together and all teeth matching exactly at the tips of the teeth. Re-install retaining flange and tighten the knob assembly. 4.3 Rotate the blade grinding index assembly toward the formed grinding wheel (item 17, page 5). Bring one of the teeth in the central portion of the blades in contact with the formed grinding wheel. If necessary, use the fine adjust dowel pin (item 18) to line up the tip of the tooth exactly with the bottom of the formed grinding wheel. After the blades have been aligned in the formed grinding wheel, the dubbing should be completed with no farther movement of the fine adjustment dowel pin. 4.4 Tighten the knob assembly (item 1) very securely to prevent any movement of the blades during dubbing. 4.7 Dub each tooth with a short jabbing motion to avoid burning the teeth. 4.8 Turn off the motor. 5 SHARPENING. Refer to page 8, Blade Grinding Index Assembly. When re-conditioning badly worn blades, it may be necessary to redress with the diamond to reform the formed grinding wheel before the last grind. See Step 3, GRINDING WHEEL DRESSING. 5.1 Place one dehider blade of the set on the index gear shaft (item 3). The hollow grind side of the blade must face up. 5.2 Place the retaining flange (item 2) on the blade, then tighten knob assembly (item 1). 5.3 Loosen hand knob (item 28) and lower index lever (item 24) until index mounting base (item 43) will go down no farther. Tighten hand knob (item 28). 5.4 Line up a tooth in the central portion of the blade with the blunted portion exactly centered in the bottom of the formed grinding wheel. 5.5 Tighten the knob assembly (item 1) securely. Use the fine adjust dowel pin (item 18) if necessary to exactly center the tooth after final tightening. Note: after the blade has been aligned in the formed grinding wheel, the sharpening should be completed with no farther movement of the fine adjust dowel pin.
operation instructions and maintenance instructions page 11 of 12 Model BR-3 5.6 Tilt the blade index assembly away from the formed grinding wheel and then start the motor. 5.7 Sharpen all teeth the same amount, with the same depth of cut, using many very short, jabbing motions to avoid burning teeth. 5.8 Grind teeth until 0.06 inch (1.5 mm) width of blunt area is left on each tip. This is the exact amount of dubbing necessary for proper skinning. 1.1 Back off wheel dresser assembly (items 14-16, page 6). 1.2 Place a wrench on formed wheel lock nut (item 19). 1.3 Remove hex nut (item 1). Left hand thread. 1.4 Remove retaining flange (item 2). 1.5 Remove grinding wheel (item 3). 1.6 Check all items for wear and replace if necessary. 1.7 To assemble, reverse steps and procedures 1.2-1.5. 5.9 Turn off the motor. 5.10 Repeat steps 5.1-5.9 with the remaining blade from the set. 6 DEBURRING. Refer to page 7, Hollow Grind Lever Assembly. 6.1 Remove blade from the blade grinding index assembly and place it on the hollow grind retainer flange (item 16). 6.2 Follow steps 2.1-2.7, except the grinding time should be 1/10 th of a second. MAINTENANCE INSTRUCTIONS IMPORTANT: ALWAYS DISCONNECT THE ELEC- TRIC POWER SUPPLY BEFORE PERFORMING ANY REPAIRS OR MAINTENANCE. IMPORTANT: ALWAYS CHECK NEW GRINDING WHEELS FOR POSSIBLE DAMAGE. DO NOT USE DAMAGED GRINDING WHEELS. 1 REPLACE GRINDING WHEEL WHEN NEC- ESSARY. Refer to page 5, Motor and Base Assembly. 1.8 If new grinding wheel (item 3) has been installed, stand away from the front of the BR-3 and run the BR-3 for 1 minute before using the new wheel. 2 REPLACE FORMED GRINDING WHEEL WHEN NECESSARY. Refer to page 5, Motor and Base Assembly. 2.1 Turn index gear (item 3, page 6) clockwise several notches. 2.2 Remove socket head cap screws (item 21). 2.3 Remove formed wheel cover (item 20). 2.4 Remove formed wheel lock nut (item 19). 2.5 Remove flange (item 18). 2.6 Remove formed grinding wheel (item 17). 2.7 Check all items for wear and replace if necessary. 2.8 To assemble, reverse steps and procedures 2.2-2.6. 2.9 If new formed grinding wheel (item 17) has been installed, stand away from the front of the BR-3 and run the BR-3 for 1 minute before using the new wheel.
Model BR-3 page 12 of 12 TEL. 860-347-7271 FAX. 860-347-6978