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Digga SG26 Operator And Parts Manual

Stump grinder
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OPERATOR'S AND PARTS
MANUAL
SG26 & SG30
STUMP GRINDER
UNIVERSAL SKID STEER
APPLICATIONS
4 Octal Street, Yatala QLD 4207 Australia
Ph: (07) 3807 3330 - Fax: (07) 3807 1499
Email: info@digga.com
PM-000033

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Summary of Contents for Digga SG26

  • Page 1 OPERATOR’S AND PARTS MANUAL SG26 & SG30 STUMP GRINDER UNIVERSAL SKID STEER APPLICATIONS 4 Octal Street, Yatala QLD 4207 Australia Ph: (07) 3807 3330 - Fax: (07) 3807 1499 Email: info@digga.com PM-000033...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TO THE OWNER......................A SAFETY PRECAUTIONS....................B General Information To The Operator Before You Start Working With The Stump Grinder Transporting The Stump Grinder Maintenance INTERNATIONAL SYMBOLS..................C PREOPERATION......................D Before Operation Skid Steer Nomenclature STUMP GRINDER ASSEMBLIES................E Stump Grinder Assembly #100318 Rear Guard Assembly #101742 Wheel Assemblies Hydraulic Valve Assembly #100982...

  • Page 5: To The Owner

    TO ThE OwNER GENERAL COMMENTS Congratulations on the purchase of your new DIGGA product! This product was carefully designed and manufactured to give you years of dependable service. Only minor maintenance (such as cleaning and lubricating) is required to keep it in top working condition. Be sure to observe all safety precautions and maintenance procedures, as described in this manual.

  • Page 7: Safety Precautions

    SAFETY PRECAUTIONS TAKE NOTE! THIS SAFETY ALERT SYMBOL FOUND THROUGHOUT THIS MANUAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLVING YOUR PER- SONAL SAFETY OR OTHERS. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN INJURY OR DEATH. ThIS SYMBOL MEANS: ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

  • Page 8: General Information

    GENERAL INFORMATION This section is composed of various warnings and safety tips. Read and learn all the information in this section before you attempt to use your DIGGA STUMP GRINDER. Also read your vehicle owner’s manual before using your equipment. This knowledge will help you operate your unit safely. Do not take this information lightly, it is presented for your benefit and for the benefit of others working around you.

  • Page 9: Working With The Stump Grinder

    SAFETY PRECAUTIONS DIGGA STUMP GRINDER Never operate the unit near bystanders, traffic, pets, livestock or buildings. Be sure others know when and where you will be working. Never direct discharge towards people, animals or property. Never allow anyone to approach the stump grinder when in operation.

  • Page 10: Transporting The Stump Grinder

    SAFETY PRECAUTIONS DIGGA STUMP GRINDER TRANSPORTING ThE STUMP GRINDER 1. Follow all federal, state and local regulations when transporting the unit on public roads. 2. Use extra care when loading or unloading the machine onto a truck or trailer. Disconnect hydraulic couplers during transportation.

  • Page 11: International Symbols

    INTERNATIONAL SYMBOLS As a guide to the operation of your equipment, various international symbols have been utilized on the instruments and controls. The symbols are shown below with an indi- cation of their meaning. 3869 4-14-94-2...

  • Page 12: Preoperation

    DIGGA STUMP GRINDER GENERAL INFORMATION The DIGGA Stump Grinders were designed to be easy to use and maintain. They are operated by the skid-steer auxiliary hydraulics and mount to the quick attach mechanism for easy operator hook-up. There are two models of DIGGA stump grinders available, standard flow and high flow.

  • Page 13: Nomenclature

    PREOPERATION DIGGA STUMP GRINDER NOMENCLATURE Throughout this manual, reference is made to various stump grinder 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.

  • Page 14: Stump Grinder Assembly #100318

    STUMP GRINDER ASSEMBLY ASSEMBLY #100318 9693 1-30-07-2...
  • Page 15 STUMP GRINDER ASSEMBLY ASSEMBLY #100318 NO REQ’D PART NO. DESCRIPTION 1022 .31” UNC X 1.00” hex Capscrew 1513 .31” Flat washer 1502 .31” Lock washer 1225 .31” UNC hex Nut 1953 .38” UNC X .75” Flange head Capscrew 100769 Pin - 1.00” X 2.50” 101245 Cylinder Assembly - Lift 45617...

  • Page 16: Rear Guard Assembly #101742

    REAR GUARD ASSEMBLY ASSEMBLY #101742 9765 1-30-07-2...
  • Page 17 REAR GUARD ASSEMBLY ASSEMBLY #101742 REQ’D PART NO. DESCRIPTION 102061 wheel Guard Cover 1043 .38” UNC X 1.00” hex Capscrew 1837 .38” UNC Deformed Oval Lock Nut 102062 Rear Rubber Guard Bracket 100802 Rubber Guard 1049 .38” UNC X 2.50” hex Capscrew 1514 .38”...
  • Page 18 SQUARE TOOTh whEEL ASSEMBLY 26” STANDARD FLOW WHEEL ASSEMBLY #101234 30” HIGH FLOW WHEEL ASSEMBLY #100418 9766 8-9-04...
  • Page 19 SQUARE TOOTh whEEL ASSEMBLY 26” STANDARD FLOW WHEEL ASSEMBLY #101234 30” HIGH FLOW WHEEL ASSEMBLY #100418 REQ’D PART NO. DESCRIPTION 101235 26” wheel - Standard Flow 19911 30” wheel - high Flow 19917 Square Tooth - Threaded 1810 .62” UNF Deformed Lock Nut REPLACEMENT TOOTh KIT #102075 19917 Square Tooth - Threaded...
  • Page 20 BOLT-ON TOOTh whEEL ASSEMBLY 26” STANDARD FLOW WHEEL ASSEMBLY #101234 30” HIGH FLOW WHEEL ASSEMBLY #100418 9768 8-9-04...
  • Page 21 BOLT-ON TOOTh whEEL ASSEMBLY 26” STANDARD FLOW WHEEL ASSEMBLY #101234 30” HIGH FLOW WHEEL ASSEMBLY #100418 NO REQ’D PART NO. DESCRIPTION 102147 26” wheel - Standard Flow 19912 30” wheel - high Flow 19959 Tooth Mount - Threaded 19957 Right Tooth 19956 Left Tooth 19960...

  • Page 22: Hydraulic Valve Assembly #100982

    hYDRAULIC VALVE ASSEMBLY ASSEMBLY #100982 9699 8-9-04...
  • Page 23 hYDRAULIC VALVE ASSEMBLY ASSEMBLY #100982 NO REQ’D PART NO. DESCRIPTION 3434 90° Elbow 6MBo-6MJ 38196 hose .25” X 38” 6FJX-6FJX 45° 38197 hose .25” X 29” 6FJX-6FJX 45° 30140 90° Elbow 6MBo-6MJ - XL 38195 hose .25” X 19” 6FJX-6FJX 37345 hose .25”...

  • Page 24: Control Valve Replacement Parts

    CONTROL VALVE REPLACEMENT PARTS 9759 8-3-04...
  • Page 25 CONTROL VALVE REPLACEMENT PARTS NO REQ’D PART DESCRIPTION 45892 Solenoid Valve Cartridge 45893 Replacement Coil 45894 Spacer 45888 Solenoid Valve Cartridge 45889 Seal Kit 45882 Press Comp Cartridge 45883 Seal Kit 45887 Relief Valve Cartridge 45862 Seal Kit - Relief Valve 45885 Flow Control Cartridge (Cylinder Speed Control) 45886...

  • Page 26: Standard Flow Drive Assembly #100415

    STANDARD FLOw DRIVE ASSEMBLY ASSEMBLY #100415 9701 6-24-04...
  • Page 27 STANDARD FLOw DRIVE ASSEMBLY ASSEMBLY #100415 REQ’D PART NO. DESCRIPTION 38232 hose .62” X 52” 10MBo 90° - 12FJX 17787 hydraulic Motor 45814 Replacement Seal Kit 1841 .50” UNC Deformed Lock Nut 100860 Motor Mount 1091 .50” UNC X 1.75” hex Capscrew 6886 Rubber Bumper 17808...

  • Page 28: High Flow Drive Assembly #100417

    hIGh FLOw DRIVE ASSEMBLY ASSEMBLY #100417 9703 1-30-07-3...
  • Page 29 hIGh FLOw DRIVE ASSEMBLY ASSEMBLY #100417 NO REQ’D PART NO. DESCRIPTION 38233 hose .75” X 52” 12FJX - 12FJX 22600 90° Elbow 12MBo-12MJ 30292 Straight Connector 16MBo-12FB 30051 90° Elbow 16MBo-12MJ 37482 Case Drain hose .25” X 132” 6FJX-6FJX 38234 Case Drain hose .25”...

  • Page 30: Power And Return Circuit

    STANDARD FLOw hOSE SET POWER AND RETURN CIRCUIT 9705 6-24-04...
  • Page 31 STANDARD FLOw hOSE SET POWER AND RETURN CIRCUIT hOSE KIT #100983 REQ’D PART NO. DESCRIPTION 22518 Female Coupler 19632 Male Coupler 3419 Straight Connector 12MBo-12MJ 38235 hose .62” X 72” 12FJX-12FJX hOSE KIT #100984 NO REQ’D PART NO. DESCRIPTION 22518 Female Coupler 19632 Male Coupler...
  • Page 32 hIGh FLOw hOSE SET POWER AND RETURN CIRCUIT 9770 8-9-04...
  • Page 33 hIGh FLOw hOSE SET POWER AND RETURN CIRCUIT hOSE KIT #101754 REQ’D PART NO. DESCRIPTION 84921 Female Coupler .62”-12FBo-FF 19636 Male Coupler 62”-12FBo-FF 3419 Straight Connector 12MBo-12MJ 35920 hose .75” X 73” 12FJX-12FJX * Case drain hoses and fittings included in this kit are shown on the High Flow Drive As- sembly pages.

  • Page 34: Cylinder Assembly #100324

    CYLINDER ASSEMBLY ASSEMBLY #100324 9721 7-1-04...

  • Page 35: Cylinder Assembly #101245

    CYLINDER ASSEMBLY ASSEMBLY #100324 REQ’D PART NO. DESCRIPTION 6616 Grease Fitting 1483 hex Nut 50252 Piston 88926 Cylinder Tube 77458 Cylinder Gland 100325 Cylinder Rod 88919 Bushing 4644* Piston Ring 4645* O’Ring 4641* O’Ring 5421 washer 4509* O’Ring 4510* Back-Up washer 45219* Poly-Pak Seal 45250*...
  • Page 36 CYLINDER ASSEMBLY ASSEMBLY #101245 9723 7-1-04...
  • Page 37 CYLINDER ASSEMBLY ASSEMBLY #101245 REQ’D PART NO. DESCRIPTION 6616 Grease Fitting 1483 hex Nut 50252 Piston 88926 Cylinder Tube 77458 Cylinder Gland 100325 Cylinder Rod 88919 Bushing 4644* Piston Ring 4645* O’Ring 4641* O’Ring 5421 washer 4509* O’Ring 4510* Back-Up washer 45219* Poly-Pak Seal 45250*...
  • Page 38 CONTROL BOX ASSEMBLY DIGGA ELECTRICAL CONTROL HANDLE ASSEMBLY #104367 (DIRECT CONNECT TO CONTROL VALVE) 9828 3-04-06-3...
  • Page 39 CONTROL BOX ASSEMBLY OPTIONAL ELELCTRICAL CONTROL BOX ASSEMBLY #104368 (USE WITH WIRING HARNESS #101096) 9726 3-15-06-4...
  • Page 40 ELECTRICAL hARNESS WIRING HARNESS #101096 9709 3-15-06-2...
  • Page 41 ELECTRICAL SChEMATIC WIRING HARNESS #108035 10887 1-26-06...
  • Page 42 ELECTRICAL SChEMATIC WIRING HARNESS #108036 10888 1-26-07...

  • Page 43: Installation Instructions

    INSTALLATION INSTRUCTIONS GENERAL INFORMATION The following instructions will help you to mount your stump grinder onto your skid- steer loader. The stump grinder uses the quick-attach system for ease of installation. There- fore, if you know how to attach your bucket, attaching the stump grinder should prove no problem.
  • Page 44 INSTALLATION INSTRUCTIONS Route the electrical control handle to the operator’s station taking care to avoid pinching of the electrical wire harness. NOTE: If your skid-steer is equipped with a multi-function control handle, connect the electrical wire harness from the stump grinder to the auxiliary electrical connector on the front of the skid-steer.

  • Page 45: Operating Instructions

    OPERATING INSTRUCTIONS GENERAL INFORMATION The DIGGA stump grinder is perfect for landscaping and maintaining parks and municipalities. The easy maneuverability of the skid-steer allows access to ar- eas often inaccessible and it is easily moved from site to site. The offset design offers ex- cellent visibility and can be used in tight spaces around buildings and homes.
  • Page 46 OPERATING INSTRUCTIONS DIGGA STUMP GRINDER NOTE: The cutting depth of each pass will be determined by the type of tree. Certain varieties of trees will allow for a deeper cut than trees containing a lot of sap. Swing the cutting wheel to the left across the top of the stump on the edge closest to the skid-steer.

  • Page 47: Lubrication

    LUBRICATION GENERAL INFORMATION Economical and efficient operation of any machine is dependent upon regular and proper lubrication of all moving parts with a quality lubricant. Neglect leads to reduced efficiency, wear, breakdown and needless replacement of parts. DAILY / EVERY 8 hOURS All parts provided with grease fittings should be lubricated every 8 hours.

  • Page 48: Maintenance

    MAINTENANCE STUMP GRINDER GENERAL INFORMATION Regular maintenance is the key to long equipment life and safe operation. Main- tenance requirements have been reduced to an absolute minimum. However, it is very important that these maintenance functions be performed as described below. wARNING! Avoid serious injury.

  • Page 49: Replacing Teeth

    MAINTENANCE STUMP GRINDER wARNING! Avoid serious injury. Lower the stump grinder to the ground, set the parking brake, stop the skid-steer engine and remove the key before leaving the operator’s seat. If unit must be left raised for maintenance block the unit securely to prevent accidental release of the lifting mechanism.

  • Page 50: Replacing Gearbox/Motor Coupler

    MAINTENANCE STUMP GRINDER Standard Flow: Install the new motor onto the motor mount using the existing hardware. Slide the motor with the mounting plate into the coupler while positioning the rubber bumpers and retighten the sockethead capscrews. high Flow: Slide the motor into the coupler while maintaining the positioning of the motor mounting plates.

  • Page 51: Replacing Gearbox

    MAINTENANCE STUMP GRINDER Reinstall the motor into the coupler (install the four .50” capscrews on high flow units) and retighten the sockethead capscrews. Torque to specification. See Section O REPLACING GEARBOX When replacing the gearbox the unit should be either securely blocked up off the ground or attached to a hoist with the hydraulic couplers disconnected.

  • Page 52: Cylinder Seal Replacement

    MAINTENANCE CYLINDER SEAL REPLACEMENT ASSEMBLY PROCEDURE GENERAL INFORMATION IMPORTANT: Replace all seals even if they do The following information is provided to not appear to be damaged. Failure to replace assist you in the event you should need to repair all seals mayresult in premature cylinder fail- or rebuild a hydraulic cylinder.
  • Page 53 MAINTENANCE 6. Apply a lubricant (such as Lubriplate #105) to the piston and teflon ring. Insert the cylinder rod assem- bly into the cylinder tube. IMPORTANT: Ensure that the piston ring fits squarely into the cylinder tube and piston groove, otherwise the ring may be damaged and a leak will occur.

  • Page 55: Storage And Transporting

    STORAGE & TRANSPORTING STUMP GRINDER GENERAL INFORMATION The following storage procedure will help you to keep your stump grinder in top condition. It will also help you get off to a good start the next time your stump grinder is needed.

  • Page 57: Troubleshooting

    Damaged quick coupler. Replace if necessary Oil Filter on the skid-steer is dirty. Refer to Skid Steers Owners Manual. Internal Motor Leakage. Call DIGGA service department. Gearbox Failure Call DIGGA service deparment. Leaking Oil Loose or damaged hydraulic line. Tighten or Replace.
  • Page 58 Switch motor hoses. rection. Excessive Vibration Broken, Damaged or missing Replace as necessary. teeth. Bent Gearbox Shaft Call DIGGA Service Department. Cylinders will not Function Faulty Switch or electrical con- Repair or replace as necessary. nection. Faulty control valve coil. Replace coil.

  • Page 59: Bolt Torque Specification

    BOLT TORQUE BOLT TORQUE SPECIFICATIONS GENERAL TORQUE SPECIFICATION TABLE Use the following torques when special torques are not given. These values apply to fas- teners as received from suppliers, dry, or when lubricated with normal engine oil. They do not apply if special graphited or moly disulphide greases or other extreme pressure lubricants are used.

  • Page 61: Specifications

    SPECIFICATIONS 9779 7-29-04...

  • Page 62: Decals

    GENERAL INFORMATION The diagram on this page shows the location of the decals used on the DIGGA Rear Discharge Stump Grinders. The decals are identified by their part numbers, with reductions of the actual decals located on the following pages.
  • Page 63 DECALS 9383 1-31-07-2...
  • Page 64 DECALS DIGGA 9782 9-21-04...

  • Page 65: Predelivery Checklist

    PREDELIVERY ChECKLIST GENERAL INFORMATION The following is a list of areas that should be inspected by the dealer prior to delivery of the attachment to the customer. The customer should check the list and make sure that the dealer has completed the inspection. Completion of this checklist will help insure that the customer receives the attachment in complete working order, ready to install.

  • Page 67: Limited Warranty

    LIMITED wARRANTY All new DIGGA products are warranted to be free from defects in materials or work- manship which may cause failure under normal usage and service when used for the pur- pose intended. In the event of failure within twelve (12) months from initial retail sale, lease or rental...

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