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OWNERS MANUAL 

MANUAL NO. 760168 
 
 
 
 
 
 

KB660 

BACKHOE

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 

IMPORTANT-KOYKER DEALER 

BE SURE THIS MANUAL IS GIVEN TO THE  

PURCHASER FOR FUTURE REFERENCE 

KOYKER MANUFACTURING CO., P.O. BOX 409 

LENNOX, SD  57039 

Phone 1-800-456-1107  E-mail [email protected] 

10/13/08

 

Summary of Contents for KB660

Page 1: ...O 760168 KB660 BACKHOE IMPORTANT KOYKER DEALER BE SURE THIS MANUAL IS GIVEN TO THE PURCHASER FOR FUTURE REFERENCE KOYKER MANUFACTURING CO P O BOX 409 LENNOX SD 57039 Phone 1 800 456 1107 E mail koyker koykermfg com 10 13 08 ...

Page 2: ...khoe Main Frame Parts Schedule 24 Backhoe Arm Frame Parts Diagram 25 Backhoe Arm Frame Parts Schedule 26 Bucket Parts Diagram and Schedule 27 Bucket Replacement Teeth Diagram and Schedule 28 3 Point Mount Diagram and Schedule 29 Drawbar Stabilizer Diagram and Schedule 30 PTO Hydraulic Diagram 31 PTO Hydraulic Schedule 32 Torsion Bar Diagram and Schedule 33 Hydraulic Information 34 2 Cylinder Servi...

Page 3: ...care instructions TO THE PURCHASER You have purchased an excellent product With proper care and use it will give you years of good safe service Use only KOYKER or KOYKER approved parts in the general maintenance and repair of your equipment Please fill out ownership registration card as soon as possible Should you have any questions comments improvements or suggestions regarding the contents of th...

Page 4: ...nd be alert to the possibility of personal injury or death DANGER Indicates an imminently hazardous situation that if not avoided will result in death or serious injury WARNING Indicates a potentially hazardous situation that if not avoided could result in death or serious injury CAUTION Indicates a potentially hazardous situation that if not avoided may result in minor or moderate injury WARNING ...

Page 5: ...tended Completely familiarize yourself and others involved with the operation of the hydraulic control valve before operating the backhoe Be certain all bystanders are clear of the machine and operation area prior to operation It may be necessary to add wheel ballast or front weights as recommended by the tractor manufacturer to maintain stability of the machine to prevent tipping or upset which c...

Page 6: ... ram or attach ropes chains etc to the unit Lower stabilizers and bucket when removing backhoe This will increase the stability of the unit Do not dig close to stabilizers the ground could collapse from under the backhoe Do not lift loads in excess of the backhoe capacity Always lower the backhoe bucket and stabilizers to ground shut off engine remove key and apply the parking brake before leaving...

Page 7: ...n Never use any part of your body to check for hydraulic leaks Use cardboard when checking for leaks See Fig 5 1 Relieve hydrau lic pressure before disconnecting any hydraulic line Failure to heed may result in serious injury or death Before disconnecting hydraulic lines lower the backhoe and attachments Lock out the hydraulic supply and relieve all hydraulic pressure Replace any damaged or painte...

Page 8: ...SAFETY DECALS Page 6 ...

Page 9: ...s owners manual GENERAL INFORMATION Throughout this manual reference is made to various backhoe components The purpose of this page is to acquaint you with the various names of these components This knowledge will be helpful when reading through this manual or when ordering service parts OPERATION Page 7 ...

Page 10: ...ing the stabilizer lever s rearward will bring the backhoe stabilizer s Up Both stabilizers are required to be down for proper stability of the backhoe when in operation BOOM SWING LEVER LEFT HAND LEVER Pushing the boom swing lever forward will Lower the boom dipstick and bucket Pulling the lever rearward will Lift the boom dipstick and bucket Pushing the boom swing lever to the left will swing th...

Page 11: ...tact with anything out of the ordinary stop digging at once If a utility line has been damaged contact the utility at once BEFORE YOU START DIGGING Before any excavating is started it is always a good idea to plan out the job first Various things need to be considered and taken into account prior to the actual digging The operator should inspect the job site and take notice of any potential hazard...

Page 12: ...ep the unit from moving or bouncing with backhoe use The front end loader should also be lowered if the unit is so equipped The vehicle should at no time be supported by the stabilizers and loader with any of it s wheels off the ground Severe damage to the vehicle could result When operating the unit on a delicate surface such as concrete or stone work or on sandy loose or soft ground place plywoo...

Page 13: ...vel As the bucket moves toward the operator manipulate the boom lever to keep the cut lever At the end of the digging cycle crowd the dipper in and completely curl the bucket while lifting it from the excavation Once you have cleared the excavation swing the bucket to the spoil pile Start to dump bucket before the pile is approached Once the bucket is empty swing the unit back to the excavation po...

Page 14: ... be necessary to cut a level surface in the hill for the backhoe to sit in when operating on slopes This will allow the backhoe to sit in level for digging the main excavation Pile the spoil from the surface downhill When digging the main excavation pile the spoil uphill OPERATING INSTRUCTIONS Page 12 ...

Page 15: ...ns to secure boom lock See in Fig 1 1 3 Raise all stabilizers CAUTION Be sure to install a SMV Slow Moving Vehicle sign on the backhoe dipper before attempting to transport the backhoe When transporting the backhoe on a road or highway at night or during the day use accessory lights and devices for adequate warning to the operators of other vehicles In this regard check local government regulation...

Page 16: ...ractor Make sure all hydraulic connections are tight and all hydraulic lines and hoses are in good conditions before engaging tractor PTO Check that there are no leaks in the hydraulic system Before operating all hydraulic hoses must be routed properly and not be twisted bent sharply kinked pulled tight or frayed During inspection check that all nuts bolts and pins are secure Make sure only origin...

Page 17: ...e fully collapsed so that the rod will not be exposed to the elements or damaged Be certain hydraulic system remains sealed at all times to prevent contamination Check and maintain an adequate fluid level in the tractor reservoir prior to use Inspect all hydraulic system hoses and fittings Replace prior to further operation if damaged WARNING Escaping hydraulic oil under pressure can penetrate the...

Page 18: ...ichever occurs FIRST Hourly Service Interval Periodic Service Daily 8 16 24 50 100 200 Pivot ends Excessive wear S Check hydraulic reservoir level S Check tighten hardware I S Tighten and torque wheel bolts I S Check Hydraulic fittings and lines I S Check pins bushings and zerks A Grease zerks S S Clean out debris from operator compart ment S See your Koyker dealer for the following services Chang...

Page 19: ...pes or grades SAE Hydraulic All Temperatures Transmission Fluid Type A or F ATF All Temperatures SAE 30 30W 90º F and Above SAE 20 20W 35º 90º F ASAE 10 10W 35º F and Below Page 17 OIL SPECIFICATIONS AND CAPACITYS IMPORTANT Fill reservoir with new hydraulic fluid only Do not mix oil types or grades Engage PTO pump and run at idle for 5 minutes Check fluid level and add as necessary Gear Box 1 Pint...

Page 20: ...HYDRAULIC SYSTEM PARTS DIAGRAM Page 18 AB CD EF GH IJ KL MN ...

Page 21: ...Hydraulic Hose 2 2 750151 51 Hydraulic Hose 2 3 750150 51 Hydraulic Hose 2 4 750158 56 Hydraulic Hose 1 5 750157 70 Hydraulic Hose 1 6 750156 89 Hydraulic Hose 1 7 750155 101 Hydraulic Hose 2 8 750153 105 Hydraulic Hose 1 9 750106 48 Hydraulic Hose 2 10 750177 Hose Sleeve Protective 5 Feet ...

Page 22: ...KOYKER KB660 VALVE PARTS DIAGRAM Page 20 NOTE ORFICE ORIENTATION ...

Page 23: ...654508 FITTING HYD 90 ELB 6 MJX 8 ORM 6 4 653534 FITTING HYD ADA 6MJX 8ORM 6 5 663201 FITTING HYD 90 ELB 8 MJX 8 ORM 2 6 675515 FITTING HYD ADA 8MJX 8 ORM 1 7 674566 FITTING HYD 90 ELB 8 ORM 8 FJX 1 8 750172 1 16 HYDRAULIC ORIFICE 3 9 750154 ADAPTER LONG BENT TUBE 1 10 750160 ADAPTER MEDIUM BENT TUBE 1 11 681550 IN LINE FILTER AND ELEMENT 1 ...

Page 24: ...EM NO PART NO DESCRIPTION QTY 1 681550 IN LINE FILTER ASSEMBLY 90 MICRON 1 2 681552 REPLACEMENT ELEMENT AND SEALS 90 MICRON 1 FILTER BODY 1 FILTER ELEMENT 1 2 FACE SEAL 1 2 O RING SEAL 1 2 SPRING 1 INNER SPRING 1 FILTER CAP 1 Page 22 ...

Page 25: ...KOYKER KB660 MAIN FRAME PARTS DIAGRAM Page 23 3 6 ...

Page 26: ...H Cap Screw 1 2 13 x 4 1 18 640014 HH Cap Screw 5 16 18 x 0 75 22 19 640016 HH Cap Screw 5 16 18 x 1 00 8 20 680113 HH Cap Screw 1 4 x 2 GR 8 9 21 640152 Washer Flat 5 16 PLTD 25 22 640151 Washer Spring Lock 5 16 26 23 640138 Center Locknut 1 2 1 24 640128 Center Locknut 5 16 4 25 640126 Center Locknut 1 4 9 26 750161 Caution Decal 1 27 750162 Danger Decal 1 28 750163 Operation Decal 1 29 750173 K...

Page 27: ...KOYKER KB660 BACKHOE ARM PARTS DIAGRAM Page 25 K B 6 6 0 ...

Page 28: ...00 2 12 750057 Pin 1 13 X 4 88 2 13 750180 Pin 1 13 X 6 81 1 14 750061 Pin 1 00 X 6 56 2 15 750052 Cylinder Boom 1 16 760117 Cylinder Digger 1 17 760124 Cylinder Bucket 1 18 750164 Bumper Rubber 2 19 750100 Pin 1 4 Lynch 2 20 680112 HH Cap Screw 5 16 x 2 1 2 4 21 680113 HH Cap Screw 1 4 x 2 10 22 640128 Center Locknut 5 16 4 23 640126 Center Locknut 1 4 10 24 750166 KB660 Decal RH 1 25 750167 KB66...

Page 29: ...BUCKET KITS Page 25 Page 27 BUCKET PARTS LIST WELD ON TEETH 9 BUCKET Part No 750000 12 BUCKET Part No 750011 15 BUCKET Part No 750140 ...

Page 30: ...ET PARTS LIST 9 BUCKET Part No 760135 Key Part No Description Quantity 1 750176 Crimp tooth 3 12 BUCKET Part No 760136 Key Part No Description Quantity 1 750176 Crimp tooth 3 15 BUCKET Part No 760137 Key Part No Description Quantity 1 750176 Crimp tooth 4 ...

Page 31: ... LIST 750098 Key Part No Description Quantity 1 640079 HH Cap Screw 5 8 x 2 8 2 640141 Locknut 5 8 8 3 640161 Washer Flat 5 8 PLTD 8 4 750084 ASM Mount RH 1 5 750085 ASM Mount LH 1 6 750099 Pin Top Link 3 7 8 1 7 750100 Pin 1 4 Lynch 3 8 750101 Pin 875 X 4 2 EXISTING ON TRACTOR ...

Page 32: ...No Description Quantity 1 640142 Hex Nut 5 8 5 2 640159 Washer Lock 5 8 5 3 640161 Washer Flat 5 8 PLTD 1 4 750087 ASM Drawbar Mount 1 5 750097 Bar Spacer 2 6 750099 Pin Top Link 3 7 8 4 7 750100 Pin 1 4 Lynch 4 8 750102 Top Link 2 9 750103 U Bolt 5 8 X 2 1 2 X 3 2 10 640086 HH Cap Screw 5 8 x 3 1 2 1 ...

Page 33: ...PTO HYDRUALIC DIAGRAM 750112 Page 25 Page 31 ...

Page 34: ...g 1 7 663207 Hydraulic Fitting 1 8 750091 Pump Mount Bracket 1 9 750092 Hose Rubber 2 10 750094 PTO Adapter 1 11 750096 U Bolt 1 2 13 X 2 1 2 X 3 1 2 2 12 750104 Filter Suction Strainer 1 13 750105 Hose Hydraulic Suction 1 14 750110 Tank Hydraulic Reservoir 1 15 750168 Hose Clamp 1 3 4 Dia 1 16 750170 Decal Hydraulic Fluid Only 1 17 750185 Filter Head 1 18 750188 Filter Element 1 19 750189 Sight G...

Page 35: ...CHEDULE Page 25 Page 33 TORSION BAR PARTS LIST 750146 Key Part No Description Quantity 1 640142 Hex Nut 5 8 4 2 750100 Pin 1 4 Lynch 2 3 750101 Pin 875 X 4 2 4 750134 ASM Mount Stabilizer 1 5 750147 Bolt Eyebolt 5 8 11 4 1 2 2 ...

Page 36: ... kept free from dirt and foreign matter All internal parts to the hydraulic system of your backhoe have been carefully cleaned inspected and plugged with protective caps before shipment All protective caps should be kept in place until the hydraulic system is connected NOTE Over 75 percent of all hydraulic failure and service is caused by dirt etc in the system REMEMBER CLEAN OIL MEANS LONGER LIFE...

Page 37: ...49 Gland Assembly 1 5 760121 Rod Weldment 1 6 657632 Grease Zerk Straight 1 7 657632 Grease Zerk Straight 1 662051 Seal Kit 1 STABILIZER CYLINDER Part No 760127 Key Part No Description Quantity 1 760125 Tube Weldment 1 2 661076 Locknut 1 3 651549 Piston Assembly 1 4 651548 Gland Assembly 1 5 760126 Rod Weldment 1 6 657632 Grease Zerk Straight 1 7 657632 Grease Zerk Straight 1 662051 Seal Kit 1 ...

Page 38: ...Kit 1 DIGGER CYLINDER Part No 760117 Key Part No Description Quantity 1 760116 Tube Weldment 1 2 661017 Locknut 1 3 651458 Piston Assembly 1 4 651457 Gland Assembly 1 5 760116 Rod Weldment 1 6 657632 Grease Zerk Straight 1 7 658943 Grease Zerk 45 Degree 1 662048 Seal Kit 1 BOOM CYLINDER Part No 750052 Key Part No Description Quantity 1 750051 Tube Weldment 1 2 661017 Locknut 1 3 651458 Piston Asse...

Page 39: ...HYDRAULIC CYLINDER PARTS DIAGRAM Page 37 ...

Page 40: ...e not to scratch sealing surfaces of aluminum piston If a sharp knife is not available An electric soldering gun or hot iron may be used to melt throughout seals All gland seals shown with a section removed to facilitate correct installation Note To install rod wiper and EZ squeeze seal fold similar to shape shown below slip into gland bore and locate each in its respective groove Tools are used t...

Page 41: ... within 30 days after discovery of a problem or the claim shall be deemed waived Defective products or parts must be returned to the Koyker factory at the customer s expense for inspection by Koyker Koyker s obligation is limited to repairing or replacing at its factory any part or component it determines is defective Koyker s replacement parts are manufactured with the same precision and skill as...

Page 42: ...ized to assume for Koyker any other liability in connection with the sale of these goods KOYKER SHALL NOT BE LIABLE FOR INDIRECT SPECIAL INCIDENTAL CONSEQUENTIAL OR PUNITIVE DAMAGES DIRECTLY OR INDIRECTLY ARISING FROM THE DESIGN CONSTRUCTION INSTALLATION MANUFACTURE OR USE OF KOYKER S PRODUCTS PARTS COMPONENTS OR TRADE ACCESSORIES Such incidental and consequential damages shall include but not be ...

Page 43: ...yee or representative of Koyker may change or amend any part of this limited warranty or make exceptions to this limited warranty unless such changes are made in writing by Koyker s legal counsel All goods being returned to the Koyker factory must have a Returned Goods Authorization RGA number from Koyker To obtain an RGA number call 800 456 1107 or e mail Koyker at koyker koykermfg com Returned p...

Page 44: ... 1250 M30 1300 950 1650 1200 1850 1350 2300 1700 M33 1750 1300 2200 1650 2500 1850 3150 2350 M36 2250 1650 2850 2100 3200 2350 4050 3000 SAE Recommended Torque Settings Grade 5 Grade 8 Lubricated Dry Lubricated Dry Size N m Lb ft N m Lb ft N m Lb ft N m Lb ft 1 4 9 5 7 12 9 13 5 10 17 12 5 5 16 20 15 25 18 28 21 35 26 3 8 35 26 44 33 50 36 63 46 7 16 55 41 70 52 80 58 100 75 1 2 85 63 110 80 120 9...

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