Dinasaw T-REX Instruction Manual
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Dinasaw T-REX Instruction Manual

Automatic chain sharpener
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T-REX
Automatic Chain Sharpener
INSTRUCTION MANUAL
Version 7.0

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Summary of Contents for Dinasaw T-REX

  • Page 1 T-REX Automatic Chain Sharpener INSTRUCTION MANUAL Version 7.0...
  • Page 2 This manual should remain with the machine when resold or transferred to a new operator. The manual contains important safety procedures and instructions, which should be carefully and thoroughly read before operating the sharpener. This machine is intended for use by professional operators who are familiar with the general requirements of chainsaw sharpening and the types of machinery used within this industry.
  • Page 3 SAFETY PROCEDURES  Always wear a safety visor  Always wear a dust mask  Never stand or allow other people behind machine  Do not operate machine without safety guards in place  Always check grinding wheels for cracks before use ...
  • Page 4 LIMITED WARRANTY: Dinasaw warrants that its products will be free of defects in workmanship or material. Should any failure to conform to this warranty appear within the period of 6 months or 100 hours of operation, whichever comes first, from date of purchase, Dinasaw shall upon notification of and substantiation that the product has been stored, installed, operated and maintained in accordance with Dinasaw’s specifications and instructions, repair or replace, at Dinasaw’s sole option, any...

  • Page 5: Table Of Contents

    Table of Contents Check List Installation Wall Mounting Assembling the Tri-Pod stand (Optional) Bench mounting Operational Overview The Control Panel Assembling the Machine Adjustments Fitting the Grinding Wheel Dressing the Grinding Wheel Fitting the Chain Adjusting the Clamp Opening Feed Stroke & Pawl Height Adjustments Operating Modes Auto Cutter Sensor Setup Magnet Mode Setup...

  • Page 6: Check List

    Check List Unpack the machine and check that the following components are supplied. Standard T-Rex accessory bag. 1 x Instruction CD 1 x Instruction Manual 1 x Dressing Stone 2 x 5mm Spring Washers 2 x 5mm Hex Nuts 2 x M5 x 10 Pan Head Screws 1 x 10/13mm Spanner 1 x 2.5mm Hex Key...

  • Page 7: Installation

    Power Requirements The Dinasaw Chainsaw Sharpener can operate from a well charged automotive battery as well as a suitable regulated switch mode power supply. It is important however that the lead from the battery / power supply to the machine is no longer than 2 meters (6 feet).

  • Page 8: Wall Mounting

    Wall / Bench Mounting...
  • Page 9 Machine attached to wall bracket. Cutter Terminology Side Plate Angle Top Plate Angle...

  • Page 10: Assembling The Tri-Pod Stand (Optional)

    Assembling the Tri-Pod Stand (optional) Do not over tighten the screws in the legs as damage to the screws may occur. Fig 1...
  • Page 11 Fig 2. Fit the machine onto the support frame and tighten securely. See fig 2. Adjust the legs so that the machine sits level on the support frame. Large harvester chains may require the machine to be tilted back slightly to prevent the chain from catching on the rear plate of the machine.

  • Page 12: Bench Mounting

    Bench Mounting the Machine (Brackets not supplied)
  • Page 13 Overview of Operation The T-Rex uses cams to operate the feed, clamp and grinding head. The “Grind Cam” raises and lowers the grinding head while the “Feed Cam” both indexes and clamps the cutters. CAUTION: Excessive clamping pressure will damage the machine The T-REX model has four modes of operation.

  • Page 14: The Control Panel

    The Control Panel Function indicator Power indicator Stop / Reset Mode indicator Grinder on/off Start Detection mode Inch forward Count Inch reverse Counter display Power indicator light: · Indicates that power is on. Function indicator light: When in “Run Mode” light is on. ·...
  • Page 15 Grinder: · Turns the grinder motor on - press again stops motor. Inch Fwd: “Inches” machine forward when not in run mode. · Inch Rev: “Inches” machine in reverse when not in run mode. · Detection Mode: · Changes between the three detection modes and is shown by the Mode Indicator lights.

  • Page 16: Assembling The Machine

    Assembling the machine Connect the AC lead to the power supply Check the voltage selection switch. Failure to correctly set this switch will destroy the unit and void the warranty. Connect the output of the power supply to the machine. Switch the machine on and wait 15 seconds.
  • Page 17 Press and hold the ‘COUNT’ button and press the ‘Inch Fwd’ button, then release both buttons. This will force the machine to run to the position for setting the LEFT side angle. Remove the nut from the bolt. DO NOT WITHDRAW THE BOLT! The stepped face of the spacer must be against the bearing (see picture left) Attach the motor plate in the position shown.
  • Page 18 Rotate the motor to the desired angle on the LEFT side and tighten the bolt with the 6mm hex key. Connect the wires. Press and hold the ‘COUNT’ Button and press the “Inch Rev’ Button, then release both Buttons. This will force the machine to run to the position for setting the RIGHT side angle.

  • Page 19: Adjustments

    Adjustments The diagram below shows the main adjustment positions on the machine. 1. Grind Depth Adjuster: Sets the grinding depth. 2. Grind Head Centring Adj. Centres the grind head on the chain. 3. Feed Pawl Height Adjuster: Sets the feed pawl height to suit the chain pitch 4.

  • Page 20: Fitting The Grinding Wheel

    Fitting the Grinding Wheel Fit the grinding wheel. Do not use tools to fit nut. Tighten the securing nut Finger tight only. finger tight only. Fit the grinding wheel cover and protection shield. Note: Retaining nut has left hand thread Recessed face against grinding wheel Attach wheel cover by pushing over...
  • Page 21 Dressing and Truing the Grinding wheel CAUTION: Grinding wheels may shatter causing injury. Grinding dust has been associated with respiratory disease. Preferably use ABN / CBN wheels and wear a suitable dust mask Resin bond Grinding Wheels Fit and secure the appropriate grinding wheel (note left hand thread) Before starting the grinding wheel check that it is rated at 6500 RPM or more and is not cracked or damaged.
  • Page 22 CAUTION Grinding is dangerous. Damaged or cracked grinding wheels can shatter causing injury to the operator. Do not operate the machine without guards in place and always wear face and breathing protection. True and dress the grinding wheel using the dressing stone provided as shown above.

  • Page 23: Fitting The Chain

    Fitting the Chain Important. The chain clamp must be adjusted so that pressure is only applied when the cutter is in the fully forward position. Before fitting, ensure the clamp is backed off sufficiently when changing from small to large chains. Excessive clamping pressure will damage the machine First -- determine the drive link thickness Use two spacers for .404”...
  • Page 24 Adjusting the chain clamp opening width When sharpening .043” chain it may be necessary to reduce the opening of the clamp to prevent the chain from falling into the clamp. The same opening setting can be used for chain up to .067”. To adjust the clamp opening follow the procedure below.
  • Page 25 With the motor arm still latched in the upright position, loosen the chain clamp one full turn. Fit the chain into the chain guide as shown below. Press the button combination “COUNT”+”INCH FWD”. This will run the machine until the feed mechanism is in the fully forward position and the chain clamp is on.
  • Page 26 Changing the Feed Motor Fuse The machine is fitted with a fuse to protect the mechanism from damage if excessive pressure is applied to the chain clamp. If excessive pressure is applied and the machine will no longer feed the chain, follow the procedure below.
  • Page 27 Adjusting the Feed Stroke and Pawl Height Using the Inch Fwd button, Inch machine until feed pawl is all the way back and adjust the feed stroke adjuster until the feed pusher plate is positioned just in front of the depth gauge.
  • Page 28 Lower the motor arm and wind the ‘Depth Adjusting Screw’ on the motor arm so that the grinding wheel is above and not contacting the chain. Press the button combination “COUNT”+”INCH FWD”. Ensure the cutter being pushed is the same orientation as the grinding head. If not press ‘INCH REV’...
  • Page 29 ‘OFF’ Mode Setup This mode assumes the chain has no double cutters and no extra tie links. 1. Press ‘INCH FWD’ and ensure the cutter and the grinding head are angled the same way. If not, press ‘INCH REV’ until the Feed Pawl travels back over the following cutter then press ‘INCH FWD’...
  • Page 30 Loosen the sensor clamp screw (1) and slide the sensor so that it’s “TARGET” is beside the preceding left hand cutter. Target Sensor Clamp Position Sensor as Screw shown Target on Sensor should be in line with top of Cutter Loosen the Sensor Clamp Bracket Screw and slide the sensor toward the cutter.
  • Page 31 Sensor less than 1.5mm from cutter Caution: Positioning sensor too low will cause false sensing. Make sure sensor only senses the cutter and not the body of the chain. Figure below shows right hand cutter beside sensor. Note that lights are OFF indicating that the sensor is NOT sensing. Light OFF Right Hand Cutter...
  • Page 32 Press and hold the ‘COUNT’ Button and press the “Inch Fwd’ Button, then release both Buttons. Check that the Grinding head and the cutter are angled the same way. If they are not, press ‘INCH REV’ until the feed pawl travels back over the following cutter then press “INCH FWD’...

  • Page 33: 'Magnet' Mode Setup

    ‘MAGNET’ Mode Setup Use this mode if the chain is damaged and ‘AUTO’ mode cannot be used. This mode uses a magnet placed on the first rivet of a cutter on the chain to force the machine to reposition itself for grinding two cutters on the same side of the chain.
  • Page 34 Magnet Positioning for Counting Place the magnet supplied onto the chain as shown in fig. below. Do not place the magnet on a tie link (link between cutters) as the machine will not function correctly. Place the magnet on the first rivet of the first cutter in a double sequence on the chain.
  • Page 35 Grinding the Cutters the same length For a chain to perform at its optimum, it is crucial the cutters are the same length. After grinding the cutters, measure the length of one cutter on each side. If the cutters are different lengths, adjust the grinding head to compensate.
  • Page 36 Adjusting the amount of material to remove It is only possible to adjust the cutter while the chain is not clamped. IE: When the feed arm is in the return position. See picture below. Feed Arm in the return position and the chain clamp is OFF.
  • Page 37 The following section deals with altering the settings from standard...

  • Page 38: Changing The Side Plate Angle

    Changing the Side Plate Angle 1. Loosen the 8mm retaining nut. 2. Rotate the chain guide to the desired position. 3. Retighten the 8mm retaining nut. Maximum side plate angle Approximately 38° 8mm retaining nut Minimum side plate angle Approximately 18° Note: Reset the stroke length and feed pawl height after altering the side plate angle.

  • Page 39: Changing The Top Plate Angle

    Changing the Top Plate Angles Press and hold the ‘COUNT’ Button and press the “Inch Fwd’ Button, then release both Buttons. Loosen the bolt and set the LEFT angle to the desired angle (35° shown). Press and hold the ‘COUNT’ Button and press the “Inch Rev’...

  • Page 40: "0" Degree Top Plate Angle

    “0” Degree Top Plate Angle Press and hold the ‘COUNT’ Button and press the “Inch Fwd’ Button, then release both Buttons. Loosen the head clamp bolt and rotate head to the triangular mark as shown. Retighten head clamp bolt. Press and hold the ‘COUNT’ Button and press the “Inch Rev’...
  • Page 41 GRINDING the DEPTH GAUGES 1. Set the grinding head angle for “0” degrees as described earlier. 2. Replace or redress the grinding wheel so that the edge of the wheel suits the shape of the depth gauge. 3. Wind the depth adjusting screw in so that the grinding wheel is clear of the chain. 4.

  • Page 42: Chains With Double Tie Links

    Chains with Double Tie Links Chains with both two tie links and an out of sequence cutter require the machine to be operated in magnet mode. Adjust the feed limiting screw so that the feed pawl returns far enough to push the cutter after the double join and place the magnet on the chain as described earlier.

  • Page 43: Safety Chain

    Safety Chains Chains with this type of safety link require the feed pawl stroke to be limited so that it does not push the ridges on top of the safety link. Feed Pawl position If the chain has 2 or more tie links, the machine has to be stopped before the join.

  • Page 44: 3/4" Harvester Chain

    3/4” Harvester Chain Changing the machine to grind 3/4” harvester chain requires the following adjustments. 1. Remove the chain guide plate and place 3 washers on each stud. 2. Add one washer to the centre stud. 3. Remove the plate from the feed Pawl. 4.
  • Page 45 Attach Cutter Sensor as shown Place magnet below pin on chain. Magnet must be no more than 5mm (3/16”) away from proximity switch.
  • Page 46 Checking the Cam Timing This will only be required after disassembly. Inch the machine forward until the feed pawl has reached its furthermost forward point. View the timing marks through the cut-outs in the rear plate and ensure all three gears are timed correctly as shown below. Timing marks visible through sight holes in plate To alter the timing, remove the retaining bolt from the bevel idler gear, rotate the...

  • Page 47: Leaving The Machine For Extended Periods

    Leaving the Machine for Extended Periods When the machine is not in use (i.e.: overnight, vacations etc.), always leave the machine with the bevel cam follower on the lowest section of the bevel cam. This ensures that the contact surface of the bevel cam is not damaged. To achieve this press ‘COUNT + INCH REV’...

  • Page 48: Trouble Shooting

    Trouble Shooting Problem Cause Remedy Not Auto Detecting Cutters *Not in AUTO mode *Select Auto Mode *Sensor incorrectly adjusted *Readjust cutter sensor *Sensor wires broken *Replace sensor wire Unreliable Auto * Sensor incorrectly set *Readjust sensor closer Detection Not Feeding Chain *Blown Feed Motor Fuse *Replace Feed Motor Fuse (Page 26)

  • Page 49: Things To Watch Out For

    Things to watch out for  Check the grinding head for square and centre to the chain.  Do not over tighten the chain clamp. Over tightening can damage the machine.  Use the correct mode to suit the chain. ...
  • Page 50 CAMS AND CHAIN GUIDE ASSEMBLY...
  • Page 51 FEED and CLAMP ASSEMBLY...
  • Page 52 FRONT PLATE ASSEMBLY...
  • Page 53 HEAD ASSEMBLY...
  • Page 54 COVERS...
  • Page 55 Handi-Rex...
  • Page 56 No. Description Order No. No. Description Order No. Clamp bolt FM675HEX Bush, feed arm CPPRFAB Clamp bolt spacer CCBS Spacer, feed arm CTRFCS Clamp plate CPCGCP Conrod, feed CCFS Prox. Switch ESWITCHREED Bush, clamp CTRCPB Nut, M3 FM3NUT Screw, feed stop CTRFSC Guide, outer CPCGOP...
  • Page 57 No. Description Order No. No. Description Order No. Brace, motor shroud C3BRACE 124 8mm C clip FM8CCLIP Sensor, motor CHALLM 125 Bearing, 688 B-688 Motor, feed ESWF55 126 Cam, bevel CBCAG Plate, piv. universal RPFPPU 127 Anti-kick plate CPFA Bracket, front C3BBMBC 128 Camfollower, bevel CBCF M4 x 16 grub...
  • Page 58 No. Description Order No. No. Description Order No. 165 M12 nut FM12NUT 178 Spacer, 16mm & H CTSPH 166 Handle 179 3/8 star wheel CKNOB38 167 M8 x 16 CP grub FM825Cone 180 Magnets, guide ENEOMAG125 168 M3 gutter washer F1812WZP 181 Guide, feed stop CSFSGT...
  • Page 60 NOTES...
  • Page 61 NOTES...
  • Page 62 NOTES...

  • Page 63: Warranty Registration

    Warranty Registration Please fill out and return to place of purchase. Dinasaw ® Email: sales@dinasaw.com.au First Name: ________________________________________ Last Name: ________________________________________ Address: ________________________________________ ________________________________________ ________________________________________ Phone Number: ________________________________________ Fax Number: ________________________________________ E-Mail Address: ________________________________________ Place of purchase:________________________________________ Date of purchase: ________________________________________...
  • Page 64 DinaSaw Pty Ltd Unit 3, 11 Hinkler Court, Brendale QLD, 4500 P: +61 (0)7 5491 4999 E: sales@dinasaw.com.au W: dinasaw.com.au...

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