Digga Magnum II Series Operator And Parts Manual
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Digga Magnum II Series Operator And Parts Manual

Mulcher for skid steer and excavator
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OPERATOR'S AND PARTS MANUAL
MAGNUM MULCHER SERIES II
FOR SKID STEER AND EXCAVATOR
SERIAL NUMBER:
PM-000102-A
MODEL NUMBER:

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Summary of Contents for Digga Magnum II Series

  • Page 1 OPERATOR’S AND PARTS MANUAL MAGNUM MULCHER SERIES II FOR SKID STEER AND EXCAVATOR SERIAL NUMBER: PM-000102-A MODEL NUMBER:...
  • Page 3 ROTATING DRUM HAZARD! STAY BACK! OBJECTS CAN BE THROWN! DO NOT OPERATE NEAR BY STANDERS. DANGER! TO AVOID SERIOUS PERSONAL INJURY OR DEATH THE DIGGA MAGNUM MULCHER MUST NOT BE ATTACHED TO ANY POWER UNIT THAT DOES NOT HAVE A FORESTRY GUARD PACKAGE INSTALLED.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS PREFACE ..............................5 SAFETY PRECAUTIONS Safety Statements........................6 General Safety Precautions......................7 Equipment Safety Precautions ....................9 DECALS............................11 SET-UP ..............................14 INSTALLATION ............................17 OPERATING INSTRUCTIONS Intended Use.........................21 Case Drain ..........................21 Push Over Bar, Hydraulic Deflector Door & Pressure Site Gauge ......... 22 Operation - Starting and Stopping the Mulcher..............

  • Page 5: Preface

    PREFACE GENERAL COMMENTS Congratulations on the purchase of your new DIGGA product! This product was carefully designed and manufactured to give you many 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 maintenance procedures and safety precautions in this manual and on any safety decals located on the product and on any equipment on which the attachment is mounted.

  • Page 6: Safety Statements

    SAFETY STATEMENTS THIS SYMBOL BY ITSELF OR WITH A WARNING WORD THROUGHOUT THIS MANUAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLVING YOUR PERSONAL SAFETY OR THE SAFETY OF OTHERS. FAILURE TO FOLLOW THESE INSTRUCTIONS CAN RESULT IN INJURY OR DEATH. DANGER THIS SIGNAL WORD INDICATES A HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR SERIOUS INJURY.

  • Page 7: General Safety Precautions

    GENERAL SAFETY PRECAUTIONS WARNING! HAZARD ASSESMENT Evaluate the work space for potential hazards you may encounter whilst operating the Mulcher. WARNING! PROTECT AGAINST FLYING DEBRIS Always wear proper safety glasses, goggles, or a face shield when driving pins in or out, or when any operation causes dust, flying debris, or any other hazardous material.
  • Page 8 GENERAL SAFETY PRECAUTIONS WARNING! DO NOT MODIFY MACHINE OR ATTACHMENTS Modifications may weaken the integrity of the attachment and may impair the function, safety, life, and performance of the attachment. When making repairs, use only the manufacturer’s genuine parts, following authorized instructions. Other parts may be substandard in fit and quality.

  • Page 9: Equipment Safety Precautions

    EQUIPMENT SAFETY PRECAUTIONS WARNING! KNOW WHERE UTILITIES ARE Observe overhead electrical and other utility lines. Be sure equipment will clear them. When digging, call your local utilities for location of buried utility lines, gas, water, and sewer, as well as any other hazard you may encounter. WARNING! EXPOSURE TO RESPIRABLE CRYSTALLINE SILICA DUST ALONG WITH OTHER HAZARDOUS DUSTS MAY CAUSE...
  • Page 10 If not functioning properly, always tag “DO NOT OPERATE” until all problems are corrected. • Worn, damaged, or illegible safety decals must be replaced. New safety decals can be ordered from DIGGA. • Never make hydraulic repairs while the system is under pressure. Serious personal injury or death could result.

  • Page 11: Decals

    DECAL PLACEMENT GENERAL INFORMATION The diagram on this page shows the location of the decals used on the DIGGA Mulchers. The decals are identified by their part numbers, with reductions of the actual decals located on the following pages. Use this information to order replacements for lost or damaged decals. Be sure to read all decals before operating the attachment.
  • Page 12 DECALS WARNING! HIGH PRESSURE FLUID DANGER! FLYING DEBRIS PART #40151 PART #40719 DANGER! ROTATING DRUM PART #40591 DANGER! STAND CLEAR WARNING! GUARDS PART #4105 PART #40949 CLEAN DEBRIS - 40 HOURS PART #41087 NOTICE! MOTOR FAILURE PART #41200 DANGER! GUARD MISSING PART #40307 PM-000102-A OCTOBER 2017...
  • Page 13 PART #41059 STAND CLEAR PART #40161 MULCHER LOGO PART #41020 SERIES II PART #41192 DIGGA LOGO CHECK OIL LEVEL PART #4132 SERIAL TAG GREASE EVERY 200 HOURS PART #DE000063 PART #41166 NOTE: Contact your local dealer for model number and logo decals.

  • Page 14: Setup

    SETUP MOTOR DISPLACEMENT Due to the range of prime movers the DIGGA Series II Magnum Mulcher is designed for, the motor minimum displacement is adjustable to various LPM and rotor RPM to give you optimum productivity for your particular application. The displacement must be adjusted and then “locked in”. For optimum productivity and proper operation the minimum displacement on the mulcher motor needs to be adjusted for the “ACTUAL”...
  • Page 15 SETUP 60” SKID STEER ONLY MULCHERS 113.5-170.3 LPM / 80CC (107251 HYDRAULIC MOTOR / 35T & 50T SPROCKETS) 1800 ROTOR RPM 1900 ROTOR RPM 2000 ROTOR RPM SCREW SCREW SCREW DISPLACEMENT (M12X100 ) DISPLACEMENT (M12X100 ) DISPLACEMENT (M12X100 ) (CC) DIMENSION X (CC) DIMENSION X...
  • Page 16 SETUP 60” SKID STEER ONLY MULCHERS 113.55-170.3 LPM / 107CC AND 60” COMBINATION AND EXCAVATOR ONLY MULCHERS 113.6-227.10 LPM / 107CC (200-169 HYDRAULIC MOTOR / 35T & 50T SPROCKETS) 1800 ROTOR RPM 1900 ROTOR RPM 2000 ROTOR RPM SCREW SCREW SCREW DISPLACEMENT (M12X100 )

  • Page 17: Installation

    INSTALLATION GENERAL INFORMATION The DIGGA Series II Magnum Mulchers were designed to be easy to use and maintain. The 60” mulchers are available with skid steer only mounting, excavator only mounting or a combination mulcher that can be easily changed from skid steer mounting to excavator mounting. A special 60”...
  • Page 18 INSTALLATION. ATTACHING - EXCAVATOR A separate mounting kit is required to install the DIGGA Series II Mulcher onto your excavator. Install the mounting bracket to the mulcher mounting plate. Install the mulcher to your excavator by following your prime mover operator’s manual for proper installation of an attachment. When attaching the hoses to the excavator, the case drain line (“CD”...
  • Page 19 INSTALLATION ATTACHING - COMBINATION MULCHER The combination mulcher can be mounted to a skid steer loader or excavator. NOTE: The attachment ships skid steer ready. See “CHANGING COMBINATION MULCHER MOUNTING” for changing from skid steer mounting to excavator mounting and back again. Install the mulcher to your skid steer or excavator by following your prime mover’s operator’s manual for proper installation of an attachment.
  • Page 20 INSTALLATION CHANGING COMBINATION MULCHER MOUNTING The combination mulcher can be mounted to a skid steer loader or excavator with very few changes. The attachment ships skid steer ready. TO CHANGE FROM SKID STEER LOADER TO EXCAVATOR MOUNTING: Install the excavator mount(s). Retract the cylinder and remove the deflector door.

  • Page 21: Intended Use

    Use in any other way is considered contrary to the intended use. GENERAL INFORMATION The DIGGA Series II Mulchers are perfect for clearing tall weeds, heavy brush and hardwood tree’s up to 8” in diameter. There are three 60” models of the mulcher available, one attaches to the...

  • Page 22: Push Over Bar, Hydraulic Deflector Door & Pressure Site Gauge

    OPERATION PUSH OVER BAR The push over bar is standard from the factory on all units except for the excavator models. The push over bar is used for pushing over brush, saplings and standing trees. When mulching the larger standing trees, you may need to tilt the mulcher back slightly to prevent bending of the push over bar as the mulcher progresses through the tree.

  • Page 23: Operation - Starting And Stopping The Mulcher

    Read and understand all warnings and precautions in this manual and on the machine before operating the mulcher. The Digga mulcher is relatively simple to use, and with the help of the information in this manual and a little practice you should become proficient in its operation and able to develop procedures suitable to your particular situation.

  • Page 24: General Operating Tips (Ground Speed, Stalling, Jams, Mulching Brush And Trees)

    OPERATION GENERAL OPERATING TIPS DANGER! WHEN OPERATING WITH A SKID STEER LOADER, NEVER RAISE THE MULCHER HIGH ENOUGH THAT YOU SEE THE SAFETY CHAINS. IF THE SAFETY CHAINS ARE VISIBLE DEBRIS CAN BE DISCHARGED BACK TOWARDS THE OPERATOR CAUSING SEVERE BODILY INJURY OR DEATH. GROUND SPEED: Ground speed can be determined by watching the pressure gauge and slowing down whenever the gauge approaches maximum operating pressure.

  • Page 25: Storage

    OPERATION STORAGE • Clean the unit thoroughly, removing all mud, dirt, and grease. • Inspect for visible signs of wear, breakage or damage. Order any parts required and make the necessary repairs to avoid delays upon removal from storage. • Tighten loose nuts, cap screws and hydraulic connections.

  • Page 26: Tie Down Points

    OPERATION WARNING! USE LIFTING ACCESSORIES (CHAINS, SLINGS, ROPES, SHACKLES AND ETC.) THAT ARE CAPABLE OF SUPPORTING THE SIZE AND WEIGHT OF YOUR ATTACHMENT. SECURE ALL LIFTING ACCESSORIES IN SUCH A WAY TO PREVENT UNINTENDED DISENGAGEMENT. FAILURE TO DO SO COULD RESULT IN THE ATTACHMENT FALLING AND CAUSING SERIOUS PERSONAL INJURY OR DEATH.

  • Page 27: Maintenance And Service

    MAINTENANCE & SERVICE GENERAL INFORMATION Regular maintenance is the key to long equipment life and safe operation. Maintenance requirements have been reduced to an absolute minimum. However it is very important that these maintenance functions be performed as described below. WARNING! NEVER DO ANY MAINTENANCE TO THE MULCHER WHILE IT IS RUNNING.

  • Page 28: Lubrication Specifications

    MAINTENANCE & SERVICE BREAK-IN PERIOD Procedure After First After First After First After First 8 Hours 16 Hours 40 Hours 120 Hours Check drive belt tension.     Check torque on taper-lock bushing set screws. (#113757 to 67 ft. lbs. and #113594 ...

  • Page 29: Replacing Teeth

    MAINTENANCE & SERVICE WARNING! BEFORE PERFORMING MAINTENANCE OR SERVICE LOWER THE ATTACHMENT TO THE GROUND, DISENGAGE AUXILIARY HYDRAULICS, TURN OFF THE ENGINE, REMOVE THE KEY AND APPLY THE BRAKES. WARNING! NEVER PERFORM ANY WORK ON THIS ATTACHMENT UNLESS YOU ARE AUTHORIZED AND QUALIFIED TO DO SO.
  • Page 30 MAINTENANCE & SERVICE NOTE: Belt tension should be checked in four places evenly spaced around one full rotor rotation. Take the average of the four readings. Test the tension of the belt by checking the deflection in the belt halfway between the two sprockets. A new belt on a standard mulcher should not move more than 6.35mm with 24.95 kg of pressure (when warm) or 15.87 kg of pressure (when cold).

  • Page 31: Sprocket Removal And Installation

    MAINTENANCE & SERVICE Back off the hex nuts on the top and bottom tensioning bolts and rotate the tensioning bolts counter-clockwise to allow approximately 38.1mm forward travel of the overhung load adapter. Slide overhung load adapter and motor forward to remove tension from drive belt. Remove belt from sprockets.
  • Page 32 MAINTENANCE & SERVICE INSTALLATION Position the overhung load adapter housing, in approximately the same location it was in before the belt was removed, and tighten all four of the .75” cap screws on the overhung load adapter to ensure proper alignment of the shaft and housing. NOTE: The overhung load adapter housing must be properly seated flat against the mainframe of the mulcher for proper alignment of the sprockets.

  • Page 33: Rotor Removal And Installation

    MAINTENANCE & SERVICE .03” MAX DRIVE SPROCKET DRIVEN SPROCKET STRAIGHT EDGE CONTACT POINT CONTACT POINT NOTICE: Never force the belt over the sprocket flange as internal damage to the belt will occur. Continue to alternate tightening of the cap screws on the bushings to the recommended torque value shown in table.

  • Page 34: Checking And/Or Changing Oil In Overhung Load Adapter

    MAINTENANCE & SERVICE Remove the right and left skid shoes along with the left side filler plate. Remove the dirt rings by removing the four .25” flat head screws. With the dirt rings free to “float”, begin rotor removal by first gently swinging the left end of the rotor through the slot in the mulcher mainframe.
  • Page 35 MAINTENANCE & SERVICE NOTICE: The Overhung Load Adapter assembly is a sealed system. If oil level is low, check all seals for damage. If oil is required, replace fill level plug and remove the top right compartment cover. Clean around vent breather cap to prevent contaminants from entering the bearing assembly, and remove cap.

  • Page 36: Replacing Skid Shoe Wear Pads

    MAINTENANCE & SERVICE REPLACING SKID SHOE WEAR PADS The weld-on wear pads on your mulcher left and right skid shoe is replaceable. Refer to the parts diagram for your mulcher to order replacement wear pads. Position the mulcher in a well ventilated area and remove the skid shoe(s) from the mainframe. Remove any existing wear pad that is still on the skid shoe along with any paint that is around the weld area.

  • Page 37: Replacing And/Or Servicing The Lower Bearings

    MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE WARNING! BEFORE PERFORMING MAINTENANCE OR SERVICE, LOWER THE ATTACHMENT TO THE GROUND, DISENGAGE AUXILIARY HYDRAULICS, TURN OFF THE ENGINE, REMOVE THE KEY AND APPLY THE BRAKES. WARNING! NEVER PERFORM ANY WORK ON THIS ATTACHMENT UNLESS YOU ARE AUTHORIZED AND QUALIFIED TO DO SO.
  • Page 38 MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE Remove the eight .50” cap screws from the bearing housing (L) and install two of them into the push off holes to aid in the removal of the bearing housing. Remove the bearing housing. NOTE: When removing the cap screws on the left lower bearing housing the grease fitting protection guard will also be removed.
  • Page 39 MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE Pack the bearings with grease and install the bearing spacer ring (right lower bearing assembly only). Apply a light film of grease to the inside of both seal cap shaft seal bores and install the rotor shaft seals.
  • Page 40 Remove bearing lock nut and pull withdrawal sleeve out slightly. Repeat process at less torque. NOTE: If a minimum of 300 ft. lbs. of torque cannot be achieved, contact your local Digga dealer. Remember a bearing lock washer tab must align with a slot in bearing lock nut.

  • Page 41: Replacing And/Or Servicing The Overhung Load Adapter And Hydraulic Motor

    Remove bearing lock nut and pull withdrawal sleeve out slightly. Re- peat process at less torque. NOTE: If a minimum of 400 ft. lbs. of torque cannot be achieved, contact your local Digga dealer. Remember a bearing lock washer tab must align with a slot in bearing lock nut.
  • Page 42 MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE REMOVAL - OVERHUNG LOAD ADAPTER Remove the drive belt. See “DRIVE BELT TENSIONING AND/OR REMOVAL” Securely attach hoist to the motor and overhung load adapter housing to support it for removal. Remove the upper sprocket. See “SPROCKET REMOVAL AND INSTALLATION”. Tag and remove hoses from the hydraulic motor.
  • Page 43 MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE 2-BOLT FLANGE 4-BOLT FLANGE DRAIN PLUG FILL LEVEL PLUG (60” MULCHERS) (36” MULCHERS ONLY) DRAIN PLUG DRAIN PLUG FILL LEVEL PLUG (36” MULCHERS ONLY) FILL LEVEL PLUG (60” MULCHERS) After ensuring that the cap screws securing the retaining seal cap to the overhung load adapter remain at 25 ft.

  • Page 44: Cylinder Seal Replacement

    MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE CYLINDER SEAL REPLACEMENT The following information is provided to assist you in the event you should need to repair or rebuild a hydraulic cylinder. When working on hydraulic cylinders, make sure that the work area and tools are clean and free of dirt to prevent contamination of the hydraulic system and damage to the hydraulic cylinders.
  • Page 45 MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE ASSEMBLY PROCEDURE : Replace all seals even if they do not appear to be damaged. Failure to replace all seals IMPORTANT may result in premature cylinder failure. Seal kits will service most cylinders of similar bore size and rod diameter. NOTE: Install the cylinder rod seal in the gland first.
  • Page 46 MAINTENANCE & SERVICE QUALIFIED TECHNICIAN MAINTENANCE Thread Diameter POUNDS - FEET 7/8" 150-200 *1" 230-325 1-1/8" 350-480 1-1/4" 490-670 1-3/8" 670-900 * 1" Thread Diameter WITH 1.25" Rod Diameter Min. 230 ft. lbs. Max. 250 ft. lbs. IMPORTANT: Do not contact the active surface of the cylinder rod with the vice. Damage to the rod could result.

  • Page 47: Troubleshooting

    Rotor not turning. the prime mover. Obstruction in hydraulic lines. Remove obstruction. Replace if necessary. Hydraulic motor damaged or seals Call Digga service department for blown. instructions. Auxiliary control valve not engaged. Verify hydraulic flow using inline flow meter or other attachment.
  • Page 48 Relief valve setting on prime mover Refer to prime mover owner’s manual. adjusted too low. Hydraulic motor damaged or seals Call Digga service department for blown. instructions. Refer to prime mover owner’s manual. Oil or fuel filter on prime mover needs replaced.
  • Page 49 Loose or damaged hydraulic line. Tighten or replace. Upper bearing failure. Replace if necessary. Replace if necessary. O-Rings on hydraulic fittings damaged. Call Digga service department for Hydraulic motor damaged or seals instructions. blown. Tighten or replace. Hydraulic fittings loose or damaged.
  • Page 50 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION Hydraulic Insufficient hydraulic flow from Refer to prime mover owner’s manual the prime mover. cylinder not and verify hydraulic flow using an operating. inline flow meter or other attachment. Cylinder rod bent. Visually inspect the cylinder for damage.
  • Page 51 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION Excessive Teeth are worn, broken or Inspect and replace if necessary. vibration during missing. operation. Bearing failure. Inspect and replace if necessary. Rotor obstruction. Clear all debris from rotor and teeth. (See General Operating Tips) Retention belt.

  • Page 52: Bolt Torque Specifications

    BOLT TORQUE SPECIFICATIONS GENERAL TORQUE SPECIFICATION TABLES Use the following charts when determining bolt torque specifications when special torques are not given. Always use grade 5 or better when replacing bolts. SAE BOLT TORQUE SPECIFICATIONS NOTE: The following torque values are for use with extreme pressure lubricants, plating or hard washer applications Increase torque 15% when using hardware that is unplated and either dry or lubricated with engine oil.

  • Page 53: Mulcher Specifications

    SPECIFICATIONS 60” MULCHERS (EXCAVATOR AND COMBINATION APPLICATIONS) (SKID STEER LOADER APPLICATIONS) MM60S = 60” SKID STEER LOADER MM60E = 60” EXCAVATOR MM60C = 60” COMBINATION MM60H = 60” FORESTRY DESCRIPTION 60” MULCHERS MM60S MM60E MM60C MM60H Overall Width 1854mm..1854mm…..1854mm ..1854mm Overall Height 1535mm...

  • Page 54: Parts

    DIGGA INTERNATIONAL SALES OFFICES For further information on spare parts, please contact one of the Digga sales office below, or your closest authorised Digga Dealer. ASIA PACIFIC NORTH AMERICA EUROPE DIGGA HEAD OFFICE - BRISBANE DIGGA NORTH AMERICA DIGGA EUROPE...

  • Page 55: Limited Warranty

    (ii) the date the product is first leased or rented, or (iii) the date that is six (6) months after the date of shipment by Digga Australia as evidenced by the invoiced shipment date (the “Commencement Date”) & ends on the date that is twelve (12) months after the Commencement Date.
  • Page 56 Australian Designed and Manufactured PM-000102-A...

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