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woodmizer LT70M AH Super User Manual

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  • Page 1 Table of Contents Section-Page Table of Contents SW-07doc0217161...
  • Page 3 Wood-Mizer ® Safety, Setup, Operation & Maintenance Manual LT70M AH Super rev. A9.00 Safety is our #1 concern! Read and understand all safety information and instructions before oper- ating, setting up or maintaining this machine. August 2006 Form #1059 This is the original language...

  • Page 4: Table Of Contents

    Table of Contents Section-Page SECTION 1 SAFETY & GENERAL INFORMATION Blade Handling..................1-2 Sawmill Setup..................1-2 Sawmill Operation..................1-3 Sawmill Maintenance ................1-5 Safety Instructions ..................1-5 Belt Sizes ....................1-11 Blade Sizes ...................1-16 Cutting Capacity...................1-16 1.10 Engine/Motor Specifications ..............1-17 1.11 Noise Level...................1-18 1.12 Overall Dimensions ................1-18 1.13 Chains ....................1-19 1.14...
  • Page 5 Table of Contents Section-Page SECTION 3 MAINTENANCE Wear Life....................3-1 Blade Guides ..................3-2 Sawdust Removal ...................3-5 Carriage Track, Wiper & Scrapers ............3-5 Vertical Mast Rails .................3-7 Drum Switches ..................3-7 Miscellaneous Maintenance ..............3-7 Drive Belt Adjustment................3-8 Up/Down System..................3-9 3.10 Power Feed ...................3-11 3.11 Hydraulic System .................3-11 3.12...
  • Page 6 Wood-Mizer is committed to providing you with the latest technology, best quality and strongest customer service available on the market today. We continually evaluate our customers’ needs to ensure we’re meeting current wood-processing demands. Your com- ments and suggestions are welcome. If You Need To Order Parts...
  • Page 7 Sawmill and Customer Identification Each Wood-Mizer sawmill has a 17-digit Vehicle Identification Number (VIN). See the fig- ure below for VIN locations. See the chart for VIN description. F9 017 F9 .01 V.I.N. DESCRIPTION V.I.N. LOCATIONS HDSdoc021716...
  • Page 8 Each sawmill is also identified with a model number which includes the base model and the engine/motor configuration. See the figure for a description of the model number. LT70 Engine/Motor Basic Sawmill I.D. Configuration MODEL NUMBER DESCRIPTION. When you pick up your mill, you will receive a customer number. Both the VIN and your customer number expedite our service to you.

  • Page 9: Safety & General Information

    Safety & General Information SECTION 1 SAFETY & GENERAL INFORMATION Safety Symbols The following symbols and signal words call your attention to instructions concerning your personal safety. Be sure to observe and follow these instructions. The word DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

  • Page 10: Blade Handling

    Safety & General Information Blade Handling Sawmill Maintenance  Blade Handling DANGER! Always disengage the blade and shut off the sawmill engine before changing the blade. Failure to do so may result in serious injury. WARNING! Always wear gloves and eye protection when handling bandsaw blades.

  • Page 11: Sawmill Operation

    Safety & General Information Sawmill Operation Sawmill Operation IMPORTANT! The sawmill is intended for sawing wood only. The sawmill must not be used for other purposes such as cutting ice, metal or any other materials. See Section 1.9 for log size capacities of the machine. IMPORTANT! The operator of the sawmill should get adequate training in the operation and adjustment of the machine.
  • Page 12 Safety & General Information Sawmill Operation WARNING! Always make sure log is clamped securely before sawing. Failure to do so will result in serious injury or death. WARNING! Always leave loading arm halfway up while log is on sawmill bed. Failure to do so will result in serious injury or death.

  • Page 13: Sawmill Maintenance

    Safety & General Information Sawmill Maintenance Sawmill Maintenance WARNING! Always secure the cutting head with a chain or a brace before adjusting the up/down chain. The cutting head may fall, causing severe injury or death. WARNING! Always secure the cutting head with a chain or a brace before removing the up/down motor belt.
  • Page 14 Safety & General Information Observe Safety Instructions NOTE: ONLY safety instructions regarding personal injury are listed in this section. Caution statements regarding only equipment damage appear where applicable throughout the manual. Observe Safety Instructions IMPORTANT! Read the entire Operator's Manual before operating the saw- mill.
  • Page 15 Safety & General Information Keep sawmill And Area Around sawmill Clean WARNING! Always wear eye, ear, respiration, and foot protection when oper- ating or servicing the sawmill. Keep sawmill And Area Around sawmill Clean DANGER! Maintain a clean and clear path for all necessary movement around the sawmill and lumber stacking areas.
  • Page 16 Safety & General Information Keep Hands Away DANGER! Keep all persons out of the path of moving equipment and lumber when operating the sawmill. Failure to do so will result in serious injury. DANGER! Always be sure all persons are out of the path of the blade before starting the motor.
  • Page 17 Safety & General Information Keep Safety Labels In Good Condition DANGER! Hazardous voltage inside the electric boxes and at the motor can cause shock, burns, or death. Disconnect and lock out power supply before servicing! Keep all electrical component covers closed and securely fastened during sawmill operation.
  • Page 18 Safety & General Information Keep Safety Labels In Good Condition IMPORTANT! Always be sure that all safety decals are clean and readable. Replace all damaged safety decals to prevent personal injury or damage to the equipment. Contact your local distributor, or call your Customer Service Representative to order more decals.

  • Page 19: Belt Sizes

    Safety & General Information Belt Sizes Belt Sizes See Table 1-1. Belt sizes for the LT70AC are shown. Description Belt Size Wood-Mizer Part # Motor Drive Belt (E25) 3B/HB 089464 2462La Up/Down Drive Belt (AC mills) HA-670 091328 Blade Pulley Belts 017922 B72.5 TABLE - 0-0...
  • Page 20 Safety & General Information Belt Sizes TABELA 1-2 099221 CAUTION! Keep all persons a safe distance away from work area when operating the machine. 099221 098176 CAUTION! Keep away from debarker blade! 098176 096316 CAUTION! Do not open or close the electric box when the switch is not in the “0”...
  • Page 21 Safety & General Information Belt Sizes TABELA 1-2 096317 CAUTION! Disconnect power supply before opening the box. 085977B No lift the machine grasping by the element! 085977B 086099 CAUTION! Keep away - hot parts! 086099 099222 CAUTION! Sawdust outlet. Protect eyes! Safety &...
  • Page 22 Safety & General Information Belt Sizes TABELA 1-2 099542 CAUTION! Trailer. 099542 096321 Blade movement direction 505189 Lever of tensioner’s ball valve 505189 S12004G CAUTION! Always wear safety goggles when operating the sawmill! S12005G CAUTION! Always wear protective ear muffs when operating the sawmill! 1-14 HDSdoc021716 Safety &...
  • Page 23 Safety & General Information Belt Sizes TABELA 1-2 501465 CAUTION! Always wear safety boots when operating the sawmill 501467 Lubrication Point P11789-70 Aligning the blade on the wheels P11789-70 P85070 CE safety certification 099401 Russian safety certification 099401 Safety & General Information HDSdoc021716 1-15...

  • Page 24: Blade Sizes

    Safety & General Information Blade Sizes TABELA 1-2 S20097 2930 RPM - Motor rotation direction S20097 Blade Sizes See Table 1-3. Wood-Mizer TRU•SHARP™ offers three types of blades to provide efficient sawing for all models of sawmills. The engine/motor size of your sawmill and the type of wood you saw should determine which blade you choose for optimum performance.

  • Page 25: Engine/Motor Specifications

    Safety & General Information Engine/Motor Specifications 4400 lbs. (1996 kg) Maximum Log Weight TABELA. 1-4 If your sawmill is equipped with a bed extension option, add the length of this extension to the sawmill length capacity (e.g. for BX12 add 12’). Sawmills equipped with bed extensions can accept heavier logs.

  • Page 26: Noise Level

    Safety & General Information Noise Level 3-Phase Fused Recommended Volts Disconnect Wire Size Switch 15kW 400 VAC 32 A 6 mm (EA20) up to 15 m of length 18,5kW 400 VAC 40 A 6 mm (EA25) up to 15 m of length Hydraulic 400 VAC +10A...

  • Page 27: Chains

    Safety & General Information Chains LT70M Super 26’ 2" 6’ 6" 8’ 2" 7’ 8" 3491 lbs. 3916 lbs. (8 m) (2 m) (2.5 m) (2.4 m) (1571 kg) (1762 kg) TABLE - 0-0 Length from hitch to chain bracket. Width from fender to fender.

  • Page 28: Dust Extractor Specifications

    Safety & General Information Dust Extractor Specifications 1.15 Dust Extractor Specifications See Table 1-12. Specifications of the dust extractors used on the resaw for each saw head are listed below. Airflow 1200 m 3937ft Inlet diameter 100 mm (5.9”) Motor power 1,5 kW Number of sacks 1 pcs...
  • Page 29 Safety & General Information Components See Figure 1-1. The major components of the Wood-Mizer LT70 are shown below. Motor Mount Control Panel/Box Hydraulic Box Optional trailer axle Board Return Table FIG. 1-1 Safety & General Information HDSdoc021716 1-21...

  • Page 30: Lt40/70 S/M Ah Hydraulic Schematic

    Safety & General Information LT40/70 S/M AH Hydraulic Schematic 1.17 LT40/70 S/M AH Hydraulic Schematic Rear Clamp Front Clamp Up/Down Rear Clamp In/Out In/Out Clamp In/Out Clamp Up/Dn Front Clamp Up/Down Manifold RELIEF VALVE SETTING 2250 PSI Manifold Loading Arms (Optional) Side Support Power Roller...

  • Page 31: Lt40/70 S/M Ah Hydraulic Components

    Safety & General Information LT40/70 S/M AH Hydraulic Components 1.18 LT40/70 S/M AH Hydraulic Components Mfg. Part No. Manufacturer Wood-Mizer Description Part # 015090 J-D Hydraulic 017275 Hyd. Cylinder, 3" Bore x 7 7/8" Stroke PMC-19410 Prince Mfg. 015053 Hyd. Cylinder, 1 1/2" Bore x 10" Stroke P12846 J-D Hydraulic P12846...

  • Page 32: Lt40/70 S/M Hydraulic Hoses

    Safety & General Information LT40/70 S/M Hydraulic Hoses 1.19 LT40/70 S/M Hydraulic Hoses Color Length Application Wood-Mizer Code "A" Part No. None 18" 1/4” hydraulic pump to valve 015704 None 18" 1/4” hydraulic pump to valve 015704 Plain 27” 3/8” log turner cylinder base 014796 Orange 0.69m...
  • Page 33 Safety & General Information LT40/70 S/M Hydraulic Hoses Yellow 1.6m 3/8” Loading Arm Branch Base 014798 (63") Yellow 1.8m 3/8” Loading Arm Branch Base 093329 (71") Blue 4.34m 3/8” Loading Arm Cylinder Top (LT40S) 087795 (171") 4.9m 3/8” Loading Arm Cylinder Top (LT40M) 087781 (193") 4.34m...

  • Page 34: Hydraulic Blade Tensioner Assembly

    Safety & General Information Hydraulic Blade Tensioner Assembly 1.20 Hydraulic Blade Tensioner Assembly 12 VDC 600301 FIG. 1-3 HYDRAULIC SCHEMATIC. 1-26 HDSdoc021716 Safety & General Information...

  • Page 35: Setup & Operation

    Setup & Operation Sawmill Setup SECTION 2 SETUP & OPERATION Sawmill Setup IMPORTANT! Before starting to use the sawmill you have to meet the following conditions: Set up the sawmill on firm, level ground and level the sawmill. Secure the sawmill to the ground to ...
  • Page 36 Setup & Operation Sawmill Setup IMPORTANT! When starting the machine for the first time, check that main motor rotation direction is as indicated by the arrow located on the motor body (fan guard). If the rotation direction is incorrect, invert the phases in the phase inverter in the power socket (electric box).

  • Page 37: Stationary Sawmill Setup

    Setup & Operation Stationary Sawmill Setup sons at a safe distance. Failure to do so may result in serious injury or death. sm0383 Stationary Sawmill Setup Set up the mill on firm footing and level by eye. Fasten the mill to the floor to prevent any creep after prolonged use.
  • Page 38 Setup & Operation Stationary Sawmill Setup the power strip on the frame tube. The hydraulic control levers will only work when the cutting head is close enough to the front end of the mill to touch the power strip. 5. Raise the side supports that will prevent a log from falling off the side of the mill when loaded. See Figure 2-1.
  • Page 39 Setup & Operation Sawmills with cable guide (optional equippment) 2.2.1 Sawmills with cable guide (optional equippment) See Figure 2-2. The figure below shows operator’s position of the LT70MAH Super with cable guide. LT70MAHSuper RC FIG. 2-1 See Figure 2-2. The figure below shows setup of the sawmill, the control box and the cable guide columns. Setup &...
  • Page 40 Setup & Operation Sawmills with cable guide (optional equippment) FIG. 2-2 LT70MSUPER RC HDSdoc021716 Setup & Operation...
  • Page 41 Setup & Operation Sawmills with cable guide (optional equippment) See Figure 2-3. The electrical wires should be installed on the cable guide as shown below. 600311C FIG. 2-3 See Figure 2-4. The figure below shows how the electrical wires should be installed on the roller hangers. FIG.
  • Page 42 Setup & Operation Sawmills with cable guide (optional equippment) CAUTION! Be sure the larger diameter cables are mounted to the upper brackets of the roller hangers, and the smaller diameter cables are mounted to the lower brackets of the hangers. 600313B FIG.

  • Page 43: Portable Sawmill Setup

    Setup & Operation Portable Sawmill Setup Portable Sawmill Setup WARNING! Do not set up the mill on ground with more than a 10 degree incline. If setup on an incline is necessary, put blocks under one side of the mill or dig out areas for outrigger legs to keep mill level. Setting up the mill on an incline could cause it to tip over, resulting in serious personal injury.
  • Page 44 Setup & Operation Portable Sawmill Setup See Figure 2-3. Adjustment Bolt Locking Pin Locking pin in travel position Leg, Outrigger FIG. 2-4. OUTRIGGER ADJUSTMENT CAUTION! If setup sawmill on a boggy terrain (such as deep mud or sand) place the board or metal plate under each outrigger leg to prevent it from sink- ing.

  • Page 45: Middle Track Cover

    Setup & Operation Middle track cover 6. Level the sawmill by adjusting the outriggers to raise or lower each end of the sawmill. Adjust all outriggers evenly to avoid twisting the mill frame by jacking one outrigger higher than the others. Raise the side supports to prevent the log from falling off the side of the mill when loaded.
  • Page 46 Setup & Operation Middle track cover See Figure 2-5. Install the track cover and secure with two thumb screws 600303 FIG. 2-5 CAUTION! Install the track cover so that it lightly touches the track rail. If the wiper presses too firmly against the rail, it can cause the power feed to bind. 2-12 HDSdoc021716 Setup &...

  • Page 47: Replacing The Blade

    Setup & Operation Replacing The Blade Replacing The Blade DANGER! Always disengage the blade and shut off the sawmill engine before changing the blade. Failure to do so may result in serious injury. WARNING! Always wear gloves and eye protection when handling bandsaw blades.

  • Page 48: Tensioning The Blade

    Setup & Operation Tensioning the blade Tensioning the blade Before tensioning the blade, check the air pressure gauge to see that the air tension system is properly charged. The gauge should read 44 PSI, i.e. 0.3 MPa (yellow colour) with the blade tension completely released.
  • Page 49 Setup & Operation Tensioning the blade the recommended tension level. See Table 2-6. T he recommended tension for different blades is shown below. Blade Type Blade Dimensions Tension range Thickness (mm) Width (mm) 2735 1,07 60-62 0,41-0,43 3735 1,14 0,45 1,07 60-62 0,41-0,43...

  • Page 50: Tracking The Blade

    Setup & Operation Tracking the blade Tracking the blade 1. Turn the key switch to #2 position. 2. Manually spin one of the blade wheels until the blade positions itself on the blade wheels. 3. Check if the blade is properly positioned on the blade wheels. See Figure 2-7 Position 1 1/4"...
  • Page 51 Setup & Operation Tracking the blade 4. Use the cant adjustment bolt to adjust where the blade travels on the blade wheels. See Figure 2-8. Turn bolt clockwise to move blade out on wheel, DETAIL counterclockwise to move blade in on wheel.

  • Page 52: Starting The Engine (Or Motor)

    Setup & Operation Starting The Engine (or Motor) DANGER! MAKE SURE ALL GUARDS AND COVERS ARE IN PLACE AND SECURED before operating or towing the sawmill. Failure to do so may result in serious injury. Be sure the blade housing and pulley covers are closed (i.e. the safety switches located on them are engaged).

  • Page 53: Hydraulic Control Operation

    Setup & Operation Hydraulic Control Operation time you need to immediately stop the blade motor, press the emergency stop button located on the control box.CAUTION! If at any time you need to immediately stop the blade motor, press the emergency stop button located on the control box.CAUTION! If at any time you need to immediatelu stop the...
  • Page 54 Setup & Operation Hydraulic Control Operation 1. Move the clamp out and down so it will not get in the way of logs being loaded onto the bed. Lower the clamp in/out lover to move the clamp out toward the loading side of the sawmill. Lower the clamp up/down lever to lower the clamp below bed level.

  • Page 55: Loading, Turning, And Clamping Logs

    Setup & Operation Loading, Turning, And Clamping Logs 2.10 Loading, Turning, And Clamping Logs CAUTION! Before loading a log, be sure the cutting head is moved far enough forward so the log does not hit it. Damage to the sawmill may result. CAUTION! Be sure the pivot rails, turning arm, clamp, and toe boards are below bed level before loading a log onto the bed.
  • Page 56 Setup & Operation Loading, Turning, And Clamping Logs To Turn Logs 1. Raise the side supports. 2. Raise the turner lever to engage the log turner arm. 3. Spin the log against the side supports until it is turned the way you want it for the first cut. 4.
  • Page 57 Setup & Operation Loading, Turning, And Clamping Logs To Clamp Logs 1. Raise the clamp up/down lever to raise the clamp. 2. Raise the clamp in/out lever and clamp the log against the side supports. 3. Lower the turner lever until the turner arm falls below the bed. 4.

  • Page 58: Up/Down Operation

    Setup & Operation Up/Down Operation 2.11 Up/Down Operation This section describes operation of the up/down system with the standard controls. See the operation section of the Setworks or Accuset manual for operation of the up/down system using these options. 1. Install a blade, if needed, and check for correct blade tension. (See Section 2.6).

  • Page 59: Blade Guide Arm Operation

    Setup & Operation Blade Guide Arm Operation 2.12 Blade Guide Arm Operation 1. Look down the length of the log to see its maximum width. The outer blade guide should be adjusted to clear the widest section of the log by less than 1" (25.4 mm). 2.

  • Page 60: Power Feed Operation

    Setup & Operation Power Feed Operation 2.13 Power Feed Operation See Figure 2-12.The power feed system moves the carriage forward and backward by using two switches on the control panel. Carriage Forward Carriage Reverse Forward Feed Rate 3H0280 FIG. 2-12 Carriage Feed Rate The carriage feed rate switch controls the speed at which the carriage travels forward.
  • Page 61 Setup & Operation Power Feed Operation WARNING! Be sure the power feed switch is in the neutral position before turning the key switch to the on (#1) or accessory (#3) position. This prevents accidental carriage movement, which may cause serious injury or death. Using The Power Feed 1.

  • Page 62: Cutting The Log

    Setup & Operation Cutting The Log 2.14 Cutting The Log The following steps guide you through normal operation of the Wood-Mizer sawmill. 1. Once the log is placed where you want it and clamped firmly, turn the key switch to the accessory (#1) position.

  • Page 63: Wireless Control Panel (Option)

    Setup & Operation Wireless Control Panel (option) 11. Repeat the steps used to cut the first side of the log until the log is square. Cut boards from the remaining cant by adjusting the blade height for the thickness of boards that you want. Example: Remember that the blade cuts a 1/16 - 1/8"...

  • Page 64: Edging

    Setup & Operation Edging 2.16 Edging The following steps guide you through edging boards on the Wood-Mizer sawmill. 1. Raise the side supports to 1/2 the height of the flitches, or the boards that need to be edged. 2. Stack the flitches on edge against the side supports. 3.

  • Page 65: Optional Cutting Procedure

    Setup & Operation Optional Cutting Procedure 2.17 Optional Cutting Procedure In order to achieve maximum production rates with Super Series mills; it may be desirable to leave the blade engaged when returning the carriage. (Normal operation procedures recommend disengaging the blade before returning the carriage for maximum blade life and fuel economy.) DANGER! If leaving the blade engaged for maximum production rates, make...
  • Page 66 Setup & Operation Blade Height Scale Blade Height Indicator The blade height indicator has two horizontal, red lines on both sides. Readings should be taken with eyes level with the indicator, when the two red lines are in line. This will allow to avoid the parallax error (different scale readings depending on the angle of vision).

  • Page 67: Water Lube Operation

    Setup & Operation Water Lube Operation Example: You want to cut 1" (25 mm) (4/4) random width boards from a log. Position the blade for the first cut. Adjust the quarter scale so a 4/4 mark is aligned with the red line on the indicator. Make a trim cut. Return the carriage for the second cut.

  • Page 68: Preparing The Sawmill For Transportation

    Setup & Operation Preparing The Sawmill For Transportation sharpening. If you are sawing in freezing temperatures, remove the water lube bottle from the sawmill when done sawing and store it in a warm place. Blow any remaining water from the water lube hose. To remove water from the water valve on LT70 sawmills, turn the key switch to accessory, turn the feed rate knob down to ‘0’...
  • Page 69 Setup & Operation Preparing The Sawmill For Transportation See Figure 2-15. Rest pin Locking Pin FIG. 2-15 5. Lower the saw head until it is it contacts the stop blocks on the mast rails. Secure the saw head with locking clamp.
  • Page 70 Setup & Operation Preparing The Sawmill For Transportation See Figure 2-16. Rest Pin FIG. 2-16 CAUTION! It is important that the lower stop bolts are properly adjusted to secure the carriage on the track rail. Failure to properly adjust the stop bolts can cause saw head damage, especially during mill transportation.

  • Page 71: Maintenance

    MAINTENANCE Wear Life SECTION 3 MAINTENANCE This section lists the maintenance procedures that need to be performed. WARNING! Disconnect and lock out power supply before servicing, cleaning and doing maintenance to the saw! Failure to do so may result in serious injury.

  • Page 72: Blade Guides

    MAINTENANCE Blade Guides Blade Guides 1. Check the rollers for performance and wear every blade change. Replace any rollers which have worn smooth or have become cone shaped. Make sure the rollers are clean and spinning freely. If not, rebuild them.
  • Page 73 MAINTENANCE Blade Guides IMPORTANT! The disks should be parallel to the blade. Check the space between the disks and the blade at each side of the disks to insure it is parallel. Use the appropriate adjustment bolt to tilt the disks mounting plate so the insert is parallel to the blade.
  • Page 74 MAINTENANCE Blade Guides Make sure the blade screw in the top center of the C-frame is 1/16" (1.5 mm) away from the blade. If not, loosen the nut and adjust the screw as necessary. Check the screw every blade change. Failing to maintain this adjustment will lead to early blade breakage.

  • Page 75: Sawdust Removal

    MAINTENANCE Sawdust Removal Sawdust Removal 1. Remove the excess sawdust from the blade wheel housings and sawdust chute every blade change. 2. Remove all sawdust and debris from around the velocity fuse valves every 8 hours of operation. The valves are located at the bottom of the log loader cylinders.
  • Page 76 MAINTENANCE Carriage Track, Wiper & Scrapers CAUTION! Reinstall the track wiper so that it lightly touches the track rail. If the wiper presses too firmly against the rail, it can cause the power feed to bind. Clean and lubricate track wiper Adjust track scrapers Clean sawdust...

  • Page 77: Vertical Mast Rails

    MAINTENANCE Vertical Mast Rails Vertical Mast Rails Clean and lubricate the vertical mast rails every 50 hours of operation. Clean with solvent and remove any rust with a light-grade sand paper or emery cloth. Lubricate the mast with motor oil or automatic transmission fluid (ATF).

  • Page 78: Drive Belt Adjustment

    MAINTENANCE Drive Belt Adjustment Drive Belt Adjustment DANGER! Never adjust the drive belts while the engine is running. Failure to do so may result in serious injury. Periodically check the drive belt for wear. Replace any damaged or worn belts as needed. See Figure 3-4.

  • Page 79: Up/Down System

    MAINTENANCE Up/Down System Up/Down System Adjust the up/down chain tension as needed. Measure chain tension with the head all the way to the top of the vertical mast. Find the chain adjusting bolt at the bottom of the mast. Use the adjustment nut to adjust the bolt until the center of the chain can be deflected 3/4”...
  • Page 80 MAINTENANCE Up/Down System Adjustment Bolts 80_105 Mounting Bolts FIG. 3-4 Periodically check the belt for wear. Replace any damaged or worn belts as needed. 2. When oil leaks from the gear reducer please contact Customer Service. 3-10 HDSdoc021716 MAINTENANCE...

  • Page 81: Power Feed

    MAINTENANCE Power Feed 3.10 Power Feed 1. Adjust the power feed chain as needed. Measure the power feed chain tension with the saw head all the way toward the front of the mill. Use the two lock nuts to tighten or loosen the power feed chain. Adjust the chain until it measures 7 to 8 inches (17.8 to 20.3 cm) from the top of the top rail at its lowest point.
  • Page 82 MAINTENANCE Hydraulic System TEMPERATURE -30° -20° -10° 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100° 110° 120° -35° -29° -23° -18° -12° -7° -1° 5° 10° 16° 21° 27° 32° 38° 44° 49° Level A Fluid Level B Fluid Level C Fluid HD0049B FIG.

  • Page 83: Safety Devices Inspection

    MAINTENANCE Safety Devices Inspection 3.12 Safety Devices Inspection LT70 AC – Safety Devices Inspection Safety devices on the LT70AC machine which must be checked before every shift: E-STOP button and its circuit inspection  Inspection of the control circuits with the E-STOP button pressed ...
  • Page 84 MAINTENANCE Safety Devices Inspection Saw Head Saw Head Forward Saw Head Down Saw Head Reverse Debarker Motor On/Off Debarker Arm In/Out Board Return Emergency System Stop Button On/Off Blade Guide Arm In/Out Blade Motor Blade Motor Key Switch START/STOP 3H0280_ac1 Button 2.
  • Page 85 MAINTENANCE Safety Devices Inspection The blade motor should be stopped;  Try to start the motor. The blade motor should remain stopped;  Close the blade housing cover #1;  The blade motor should remain stopped until it is restarted with the START button. ...

  • Page 86: Troubleshooting

    Troubleshooting Sawing Problems SECTION 4 TROUBLESHOOTING Sawing Problems PROBLEM CAUSE SOLUTION Blades Dull Quickly Dirty logs Clean or debark logs, especially on entry side of the cut When grinding teeth, heating too much and Grind just enough metal to restore causing teeth to soften sharpness to the teeth.
  • Page 87 Troubleshooting Sawing Problems PROBLEM CAUSE SOLUTION Boards Thick Or Thin On Stress in log which causes log to not lay flat After log has been squared, take equal Ends Or Middle Of Board. on the bed. cuts off opposing sides. Take a board off the top.

  • Page 88: Electrical Problems

    Troubleshooting Electrical Problems Electrical Problems PROBLEM CAUSE SOLUTION Up/down Excessively Slow. Up/down rollers stuck. Adjust rollers. Up/down belt loose. Adjust belt to be as loose as possible without slipping Thermal overload tripped Reset. Up/down Or Power Feed Worn/dirty contacts in drum switch. Replace switch or remove control panel Motors Do Not Work.

  • Page 89: Power Feed Problems

    Troubleshooting Power Feed Problems Power Feed Problems problem CAUSE SOLUTION Power Feed Is Jerky At Low Speeds Drum switch is dirty Clean drum switch and lubricate with Or Does Not Move Until Speed Is grease supplied by Wood-Mizer. Above Halfway Mark Worn drum switch contacts Check that contacts are in good condition and positively close circuit.
  • Page 90 Troubleshooting Power Feed Problems problem CAUSE solution Power Feed Motor Overheats. Middle track oiler is dragging. Clean middle track oiler and lubricate. Allow motor to cool before restarting. Ground is not level. Level mill with carpenter's level. Allow motor to cool before restarting Track roller bearing drag is Lubricate bearings;...

  • Page 91: Hydraulic Problems

    Troubleshooting Hydraulic Problems Hydraulic Problems PROBLEM CAUSE SOLUTION You Can Actuate Any Carriage not positioned properly to Make sure carriage contact bracket is adjusted Hydraulic Handle, But Get No provide drive signal to the hydraulic far enough forward for battery positive contact Response From The Pump.
  • Page 92 Troubleshooting Hydraulic Problems PROBLEM CAUSE SOLUTION Low fluid level Check fluid level. Add an all-season hydraulic fluid such as Amoco Rycon Oil MV or Mobil Multipurpose ATF (automatic transmission fluid) until level is 4 - 4 1/2" from bottom of reservoir with all cylinders retracted Pressure relief valve moved from Adjust pressure relief valve.
  • Page 93 Troubleshooting Hydraulic Problems PROBLEM CAUSE SOLUTION Hydraulic Side Supports Go Dirt in sequence valve Remove sequence valves and clean thoroughly Down Before Or At Same with kerosene. NOTE: Be sure to reassemble Time As Log Turner the valve and install it in its original position on the cylinder Retainer in sequence valve worn Replace sequence valve...

  • Page 94: Engine/Motor Drive Pulleys Alignment

    Troubleshooting Engine/Motor Drive Pulleys Alignment Engine/Motor Drive Pulleys Alignment 1. Install the drive belt.. 2. Use a straight edge to align the engine/motor pulley to the drive pulley. Also check that the engine pulley is linear with the drive pulley. Loosen the engine mounting bolts and rotate the engine if necessary.. 3.

  • Page 95: Circuit Breaker Operation

    Troubleshooting Circuit Breaker Operation 7. Make sure the block on the lower track roller assembly is not rubbing the lower rail. Also make sure the track rollers are not too tight. 8. Make sure the power feed belt is properly tightened. Circuit Breaker Operation Sawmill controls are equipped with manual reset circuit breakers to protect the electrical circuits.

  • Page 96: Sawmill Alignment

    Sawmill Alignment Routine Alignment Procedure: SECTION 5 SAWMILL ALIGNMENT The Wood-Mizer sawmill is factory aligned. Two alignment procedures are available to realign the sawmill if necessary. The Routine Alignment instructions should be performed as necessary to solve sawing problems not related to blade performance. The Complete Alignment procedure should be performed approximately every 1500 hours of operation (sooner if you regularly transport the sawmill over rough terrain).
  • Page 97 Sawmill Alignment Routine Alignment Procedure: Saw Head Tilt As the blade enters a wide log or cant, the outside of the saw head will drop down slightly. To compensate for the drop, the saw head is adjusted 1/26" (1 mm) higher at the outside. 1.
  • Page 98 Sawmill Alignment Routine Alignment Procedure: See Figure 5-2. To adjust the saw head tilt, use the bolts located at the bottom of the saw head mast. Loosen the three sets of four retaining plate bolts. To raise the outside of the saw head, back the stop bolts out, then tighten the adjustment bolts.
  • Page 99 Sawmill Alignment Routine Alignment Procedure: Blade Guide Arm Alignment The blade guide arm moves the outer blade guide in and out. If the arm becomes loose, the blade guide will not quide the blade properly, causing inaccurate cuts. A loose blade guide arm can also cause blade vibration.
  • Page 100 Sawmill Alignment Routine Alignment Procedure: After tightening the blade guide arm rollers, check that the arm is aligned properly. Blade Guides 3. With the arm adjusted 1/2" (15 mm) from fully closed, measure the distance between the blade guide roller flange and the back of the blade.
  • Page 101 Sawmill Alignment Routine Alignment Procedure: See Figure 5-5. Loosen the horizontal adjustment bolt jam nuts. To tilt the arm in toward the blade, loosen the right bolt and tighten the left bolt. To tilt the arm out away from the blade, loosen the left bolt and tighten the right bolt.
  • Page 102 Sawmill Alignment Routine Alignment Procedure: See Figure 5-6. Measure from blade guide arm to bed rail with arm open and closed 600025-2a FIG. 5-6 7. Adjust the blade guide arm to 1/2" (15 mm) from fully open. Measure the distance from the bottom of the blade guide mounting block to the bed rail.
  • Page 103 Sawmill Alignment Routine Alignment Procedure: See Figure 5-7. Loosen the vertical adjustment bolt jam nuts. To tilt the blade guide arm down, loosen the right bolt and tighten the left bolt. To tilt the blade guide arm up, loosen the left bolt and tighten the right bolt. Retighten the jam nuts and recheck the blade guide arm vertical tilt..
  • Page 104 Sawmill Alignment Routine Alignment Procedure: Blade Guide Vertical Tilt Alignment The blade guides should be adjusted properly in the vertical plane. If the blade guides are tilted vertically, the blade will try to travel in the tilted direction. A Blade Guide Alignment Tool (BGAT) is provided to help you measure the vertical tilt of the blade.. 1.
  • Page 105 Sawmill Alignment Routine Alignment Procedure: the bottom screw. Tighten the jam nuts and recheck the tilt of the blade.. Top Vertical Tilt Adjustment Screw 600034c Adjust screws down to tilt roller up; Adjust screws up to tilt roller down Bottom Vertical Tilt Adjustment Screw FIG.
  • Page 106 Sawmill Alignment Routine Alignment Procedure: See Figure 5-10. Horizontal Tilt Adjustment Screws 600035b Blade Guide Alignment Tool FIG. 5-10 3. Measure between the back edge of the blade and the tool at the end closest to the inner blade guide ("B"). 4.
  • Page 107 Sawmill Alignment Routine Alignment Procedure: Tighten the jam nuts and recheck the tilt of the blade. Adjust screws right to tilt roller left; Adjust screws left to tilt roller right. FIG. 5-11 5. Repeat the above steps for the inner blade guide roller assembly. NOTE: Once the blade guides have been adjusted, any cutting variances are most likely caused by the blade.
  • Page 108 Sawmill Alignment Routine Alignment Procedure: Blade Guide Flange Spacing. Each blade guide must be adjusted so the roller flange is the correct distance from the back edge of the blade. If the flange is too close to or too far from the blade, the sawmill will not cut accurately. HINT: When adjusting blade guide spacing, loosen the top set screw and one side set screw only.

  • Page 109: Horizontal Adjustment Of Side Supports

    Sawmill Alignment Horizontal Adjustment of Side Supports Horizontal Adjustment of Side Supports 1. Place a flat board on the bed rails, parallel to the main bed rail. 2. Swing the side support down. 3. Pull back at the top of the support to eliminate slack as if a log were being clamped against it. See Figure 5-13.
  • Page 110 Sawmill Alignment Horizontal Adjustment of Side Supports Blade Height Scale Adjustment After the entire sawmill has been aligned and all adjustments made, check that the blade height scale indicates the true distance from the blade to the bed rails. 1. Move the saw head so the blade is positioned directly above one of the bed rails. Measure from the bottom edge on a down-set tooth of the blade to the top of the bed rail, near the inner blade guide assembly.

  • Page 111: Complete Alignment Procedure

    Sawmill Alignment Complete Alignment Procedure Complete Alignment Procedure Frame Setup Before performing the following alignment procedures, setup the mill on firm, level ground. If your sawmill is stationary, with no trailer axle, lower the feet so the weight of the sawmill is evenly supported.
  • Page 112 Sawmill Alignment Complete Alignment Procedure Blade Wheel Alignment The blade wheels should be adjusted so they are level in the vertical and horizontal planes.If the blade wheels are tilted up or down, the blade will want to travel in the tilted direction. If the blade wheels are tilted horizontally, the blade will not track properly on the wheels.
  • Page 113 Sawmill Alignment Complete Alignment Procedure Adjust vertical adjustment screws up to tilt drive-side blade wheel down; Adjust screws down to tilt wheel up FIG. 5-16 5. Recheck the vertical tilt of the drive-side blade wheel with the blade guide alignment tool. Readjust the blade wheel as necessary until the front and rear of the tool are the same distance from the bed rail (within 1/16"...
  • Page 114 Sawmill Alignment Complete Alignment Procedure See Figure 5-17. Use the vertical adjustment screws to adjust the idle-side blade wheel. To tilt the wheel up, loosen the bottom adjustment screw one quarter turn. Loosen the jam nut on the top adjustment screw and tighten the screw.
  • Page 115 Sawmill Alignment Complete Alignment Procedure 9. Check the position of the blade on the idle-side blade wheel. See Figure 5-18. The horizontal tilt of the blade wheel should be adjusted so that the gullet of a 1-1/4" blade is 1/8" (3 mm) out from the front edge of the wheel (± 1,5 mm). The gullet of a 1-1/2" blade should be 3/16" (4.5 mm) out from the front edge of the wheel (±1/26 [1 mm]).
  • Page 116 Sawmill Alignment Complete Alignment Procedure See Figure 5-20. Use the horizontal adjustment screw to adjust the drive-side blade wheel. To move the blade back on the wheel, loosen the jam nut on the adjustment screw and tighten the screw. Tighten the jam nut.
  • Page 117 Sawmill Alignment Complete Alignment Procedure Bed Rail Adjustment 1. Open the adjustable blade guide arm to within 1/2" (15 mm) of full open.. 2. Move the carriage back to the front pivot bed rail. Move the carriage back to the front pivot bed rail. Raise the cutting head until the bottom of the blade is 17"...
  • Page 118 Sawmill Alignment Complete Alignment Procedure 4. Move the clamp so it is 10" from the clamp stop. Adjust the clamp down to its lowest postion. Move the saw head forward until it is positioned over the clamp. Raise the saw head until the blade measures 15 5/16" (385 mm) from the clamp at its lowest position.
  • Page 119 Sawmill Alignment Complete Alignment Procedure 7. Measure the distance from the top of the pivot rail to the bottom of the blade. Make this measurement at each end of the pivot rail. 8. The two measurements should be 15" 375 mm. 9.
  • Page 120 Sawmill Alignment Complete Alignment Procedure Blade Guide Installation Each Wood-Mizer sawmill has two blade guide assemblies that help the blade maintain a straight cut. The two blade guide assemblies are positioned on the saw head to guide the blade on each side of the material being cut.
  • Page 121 Sawmill Alignment Complete Alignment Procedure blade. Adjust the inner blade guide assembly so the roller flange is 1/16" from the blade. See Figure 5-23. Tighten the two previously-loosened tilt adjustment screws to secure the blade guide assembly. Turn the top adjustment bolt clockwise to raise the blade guide assembly so it does not touch the blade.
  • Page 122 Sawmill Alignment Complete Alignment Procedure Blade Guide Arm Alignment The blade guide arm moves the outer blade guide in and out. If the arm becomes loose, the blade guide will not deflect the blade properly, causing inaccurate cuts. A loose blade guide arm can also cause blade vibration.
  • Page 123 Sawmill Alignment Complete Alignment Procedure See Figure 5-25. Measure distance between roller flange and blade with 600122-17 arm open and closed FIG. 5-25 4. Adjust the blade guide arm to 1/2" (15 mm) from fully open and remeasure the distance from the roller flange to the back of the blade.
  • Page 124 Sawmill Alignment Complete Alignment Procedure See Figure 5-26. Loosen the adjustment bolt jam nuts. To tilt the arm in toward the blade, loosen the right bolt and tighten the left bolt. To tilt the arm out away from the blade, loosen the left bolt and tighten the right bolt.
  • Page 125 Sawmill Alignment Complete Alignment Procedure See Figure 5-27. Adjust the blade guide arm to 1/2" (15 mm) from fully open. Measure the distance from the bottom of the blade guide mounting block to the bed rail. This measurementshould be 15" (376 mm). If the measurements are not the same, adjust the blade guide arm vertically.
  • Page 126 Sawmill Alignment Complete Alignment Procedure See Figure 5-28. Loosen the vertical adjustment bolt jam nuts. To tilt the blade guide arm down, loosen the rear bolt and tighten the front bolt. To tilt the blade guide arm up, loosen the front bolt and tighten the rear bolt.
  • Page 127 Sawmill Alignment Complete Alignment Procedure Blade Guide Deflection Perform the following steps to achieve proper blade deflection with the blade guides. 1. Raise the carriage until the blade is 375 mm above a bed rail. Measure the actual distance with a tape from the top of the rail to the bottom of the blade.
  • Page 128 Sawmill Alignment Complete Alignment Procedure Blade Guide Vertical Tilt Alignment The blade guides should be adjusted properly in the vertical plane. If the blade guides are tilted vertically, the blade will try to travel in the tilted direction. A Blade Guide Alignment Tool (BGAT) is provided to help you measure the vertical tilt of the blade. 1.
  • Page 129 Sawmill Alignment Complete Alignment Procedure See Figure 5-31. Loosen the jam nuts on the top and bottom vertical tilt adjustment screws. To tilt the roller Top Vertical Tilt Adjustment Screw 600034c Adjust screws down to tilt roller up; Adjust screws up to tilt roller down Bottom Vertical Tilt Adjustment Screw...
  • Page 130 Sawmill Alignment Complete Alignment Procedure Blade Guide Horizontal Tilt Adjustment If the blade guides are tilted in the wrong direction horizontally, the back of the blade may contact the flange as the roller is spinning down, causing it to push the blade away from the guide roller. 1.
  • Page 131 Sawmill Alignment Complete Alignment Procedure See Figure 5-33. Loosen the jam nuts on the horizontal tilt adjustment screws. To tilt the roller left, loosen the right screw and tighten left screw. To tilt the roller right, loosen the left screw and tighten the right screw. Tighten the jam nuts and recheck the tilt of the blade.
  • Page 132 Sawmill Alignment Complete Alignment Procedure Blade Guide Flange Spacing Each blade guide must be adjusted so the roller flange is the correct distance from the back edge of the blade. If the flange is too close to or too far from the blade, the sawmill will not cut accurately. HINT: When adjusting blade guide spacing, loosen the top set screw and one side set screw only.
  • Page 133 Sawmill Alignment Complete Alignment Procedure mounting bolt. 2. Check that the gap from the alignment bar to the blade is the same along entire length of the bar. Shine a flashlight behind the blade guide assembly to help you see the gap between the bar and the blade. To adjust, loosen the rear clamp bolts, but leave snug.
  • Page 134 Sawmill Alignment Complete Alignment Procedure Blade Disk Adjustment 1. Remove the blade and remove the alignment bars from the blade guide assemblies. Install new or reconditioned bottom guide disks to both blade guide assemblies (leave mounting bolts loose). Use the provided bottom disk adjustment tool to lower the bottom disk all the way down.
  • Page 135 Sawmill Alignment Complete Alignment Procedure Vertical Adjustment of Side Supports 1. Place a flat board on the bed rails. 2. Swing a side support up so that it is vertical. 3. Pull back at the top of the support to eliminate slack as if a log were being clamped against it. See Figure 5-37.
  • Page 136 Sawmill Alignment Complete Alignment Procedure Clamp Stop/Stop Bolt Adjustment 1. Once the side supports are aligned, pivot them down to their horizontal position. 2. Tie a string across the face of the side supports. Loosen the clamp stop bolts and adjust the clamp stop until it touches the string. 5-41 HDSdoc021716 Sawmill Alignment...
  • Page 137 Sawmill Alignment Complete Alignment Procedure Saw Head Tilt As the blade enters a wide log or cant, the outside of the saw head will drop down slightly. To compensate for the drop, the saw head is adjusted 1/16" (1.5 mm) higher at the outside. 1.
  • Page 138 Sawmill Alignment Complete Alignment Procedure See Figure 5-39. To adjust the saw head tilt, use the bolts located at the bottom of the saw head mast. Loosen the three sets of four retaining plate bolts. To raise the outside of the saw head, back the stop bolts out, then tighten the adjustment bolts.
  • Page 139 Sawmill Alignment Complete Alignment Procedure Blade Height Scale Adjustment After the entire sawmill has been aligned and all adjustments made, check that the blade height scale indicates the true distance from the blade to the bed rails. 1. Move the saw head so the blade is positioned directly above one of the bed rails. Measure from the bottom edge on a down-set tooth of the blade to the top of the bed rail, near the inner blade guide (or stainless steel sleeve if applicable).

  • Page 140: Motor Brake

    Motor brake Maintenance/repair SECTION 6 MOTOR BRAKE Maintenance/repair Wear of spring − applied brakes INTORQ spring − applied brakes are wear−resistant and designed for long maintenance intervals. The friction lining and the mechanical brake components are subject to function−related wear. For safe and trouble−free operation, the brake must be checked and readjusted at regular intervals, and, if necessary, be replaced.

  • Page 141: Maintenance

    Motor brake Maintenance Maintenance IMPORTANT! Brakes with defective armature plates, cheese head screws, springs or flanges must be replaced completely. Please observe the following for inspections and maintenance operations: Remove impurities through oil and grease using brake cleaning agents, if necessary, replace brake ...
  • Page 142 EC declaration of conformity according to EC Machinery Directive 2006/42/EC Annex II, 1.A We herewith declare, Wood-Mizer Industries sp. z o.o. 114 Nagorna street, 62-600 Kolo; Poland. That the following described machine in our delivered version complies with the appropriate basic safety and health requirements of the EC Machinery Directive 2006/42/EC based on its design and type, as brought into circulation by us.

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