Wood-mizer LT50HD Safety, Setup, Operation & Maintenance Manual
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Wood-mizer LT50HD Safety, Setup, Operation & Maintenance Manual

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Wood-Mizer
Safety, Setup, Operation
& Maintenance Manual
LT50HD
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
January 2007
®
Sawmill
rev. A1.01 - A5.02
Form #1298

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  • Page 1 ® Wood-Mizer Sawmill Safety, Setup, Operation & Maintenance Manual LT50HD rev. A1.01 - A5.02 Safety is our #1 concern! Read and understand all safety information and instructions before oper- ating, setting up or maintaining this machine. January 2007 Form #1298...

  • Page 2: Table Of Contents

    Table of Contents Section-Page SECTION 1 INTRODUCTION About This Manual.................1-1 Getting Service ..................1-2 General Contact Information..........1-2 Branches & Authorized Sales Centers ........1-3 Specifications ..................1-5 Customer and Sawmill Identification.............1-6 SECTION 2 SAFETY Safety Symbols..................2-1 Safety Instructions ..................2-2 SECTION 3 SAWMILL SETUP Stationary Sawmill Setup ...............3-1 Portable Sawmill Setup ................3-3 Replacing The Blade ................3-7...
  • Page 3 Power Feed Variable Feed Rate Switch Test ........6-17 Power Feed Preliminary Test ...............6-18 Power Feed Mechanical Test..............6-19 6.10 Hydraulic Pressure Test................6-20 6.11 Fuse Terminal Extension Stud..............6-21 LT50HD Rev. A1.01 - A4.00 ........6-21 6.12 Circuit Breaker Operation ..............6-23 Table of Contents 50HD07doc072310...
  • Page 4 Blade Height Scale Adjustment...........7-60 Board Return Bracket ............7-61 SECTION 8 HYDRAULIC INFORMATION Hydraulic Schematic ................8-1 Hydraulic Layout Diagram..............8-2 Hydraulic Components................8-3 Hydraulic Hoses ..................8-4 LT50HD Rev. A4.00 - A5.02 ........8-4 Hydraulic Hoses ..................8-5 LT50HD Rev. A1.01 - A3.00 ........8-5 INDEX 50HD07doc072310 Table of Contents...

  • Page 5: Introduction

    The information and instructions given in this manual do not amend or extend the limited warranties for the equipment given at the time of purchase. For general information regarding Wood-Mizer and our “Forest to Final Form” products, please refer to the All Products Catalog in your support package.

  • Page 6: Getting Service

    Getting Service Getting Service 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.

  • Page 7: Branches & Authorized Sales Centers

    Wood-Mizer Canada Wood-Mizer Branches Authorized Sales Centers* Branches 2 Wood-Mizer Northeast 6 California 16 Wood-Mizer Canada East 8604 State Route 104 6980 Camp Far West Road Box 173, 1082 #1 Hwy Hannibal, NY 13074 Sheridan, CA 95681 Aylesford, NS B0P 1C0...
  • Page 8 Introduction Branches & Authorized Sales Centers 5 Wood-Mizer Missouri 9 Pennsylvania Authorized Sales Centers* 9664 Lawrence 2130 HCR 75 (Off Old Road 522) NMt. Vernon, MO 65712 Shade Gap, PA 17255 19 Ontario North Phone (417) 466-9500 Phone (814) 259-9976...

  • Page 9: Specifications

    Introduction Specifications Specifications Model: LT50HD Rev. A1.01+ Dimensions: Length: 26'-2" Width: 6'-6" Height (Ground To Mast): 7'-8" Height (Max Head Position): 11'-0" Bed Height (Ground To Bed): 31" Blade Length: 158" Weights: Basic Unit (Wet): 3446 lbs 3343 lbs 3675 lbs...

  • Page 10: Customer And Sawmill Identification

    Customer and Sawmill Identification Customer and Sawmill Identification Each Wood-Mizer sawmill has a model number and a 17-digit Vehicle Identification Num- ber (VIN). In addition, when you pick up your mill, you will receive a customer number. These three numbers will help expedite our service to you. Please locate them now and write them below so you have quick, easy access to them.
  • Page 11 Introduction Customer and Sawmill Identification HD0133 MODEL NUMBER AND V.I.N. LOCATIONS Introduction 50HD07doc072310...

  • Page 12: Safety

    Safety Safety Symbols SECTION 2 SAFETY 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. DANGER! indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING! suggests a potentially hazardous situation which, if not avoided, could result in death or serious injury.

  • Page 13: Safety Instructions

    It is always the owner's responsibility to comply with all applicable federal, state and local laws, rules and regulations regarding the ownership, operation and towing of your Wood-Mizer sawmill. All Wood-Mizer mill owners are encouraged to become thoroughly familiar with these applicable laws and comply with them fully while using or towing the mill.
  • Page 14 Safety Safety Instructions WEAR SAFETY CLOTHING WARNING! Secure all loose clothing and jewelry before operating the sawmill. Failure to do so may result in serious injury or death. WARNING! Always wear gloves and eye protection when handling bandsaw blades. Changing blades is safest when done by one per- son! Keep all other persons away from area when coiling, carrying or changing a blade.
  • Page 15 Failure to do so may result in serious injury. WARNING! Use ONLY water and Wood-Mizer Lube Additive with the water lube accessory. Never use flammable fuels or liquids such as diesel fuel. If these types of liquids are necessary to clean the blade, remove it and clean with a rag.
  • Page 16 Safety Safety Instructions USE CAUTION WHEN WORKING WITH BATTERIES DANGER! Batteries expel explosive gases. Keep sparks, flames, burning cigarettes, or other ignition sources away at all times. Always wear safety goggles and a face shield when working near batteries. Failure to do so will cause serious injury. WARNING! Battery posts, terminals and related accessories con- tain lead and lead compounds, chemicals known to the State of...
  • Page 17 Safety Safety Instructions CAUTIONS FOR 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 the outrigger legs to keep mill level.
  • Page 18 Safety Safety Instructions CHECK SAWMILL BEFORE OPERATION 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 in place and secure.
  • Page 19 Safety Safety Instructions KEEP PERSONS AWAY DANGER! Stay clear of the area between the trailer axle and saw carriage. Failure to do so will result in serious injury. DANGER! Keep all persons out of the path of moving equipment and logs when operating sawmill or loading and turning logs. Fail- ure to do so will result in serious injury.
  • Page 20 Safety Safety Instructions KEEP HANDS AWAY DANGER! Always disengage the blade and shut off the sawmill engine before changing the blade. Failure to do so will result in serious injury. DANGER! Engine components can become very hot during opera- tion. Avoid contact with any part of a hot engine. The exhaust com- ponents of your engine are especially hot during and following operation.
  • Page 21 Safety Safety Instructions CAUTIONS FOR GAS OR DIESEL ENGINE OPERATION DANGER! Operate your engine/machine only in well venti- lated areas. The exhaust gases of your engine can cause nausea, delirium and potentially death unless adequate ventilation is present. DANGER! Never operate an engine with a fuel or oil leak. The leaking fuel or oil could potentially come in contact with hot surfaces and ignite into flames.
  • Page 22 Safety Safety Instructions USE PROPER PROCEDURE WHEN CONDUCTING ELECTRICAL SAFETY CHECKS AND MAINTENANCE DANGER! Make sure all electrical installation, service and/or maintenance work is performed by a qualified electrician and is in accordance with applicable electrical codes. DANGER! ARC FLASH AND SHOCK HAZARD! Hazardous volt- age inside the electric sawmill disconnect box, starter box, and at the motor can cause shock, burns, or death.
  • Page 23 Safety Safety Instructions DANGER! Lockout procedures must be used during: Changing or adjusting blades Unjamming operations Cleaning Mechanical repair Electrical maintenance Retrieval of tools/parts from work area Activities where guards or electrical panel guard is open or removed Maintenance hazards include: Blade contact Pinch points Kickbacks...
  • Page 24 Safety Safety Instructions SAWMILL LOCKOUT PROCEDURE Lockout procedures must be followed (see ANSI Standard Z244.1-1982 and OSHA regu- lation 1910.147). Purpose: This procedure establishes the minimum requirements for lockout of energy sources that could cause injury. Responsibility: The responsibility for seeing that this procedure is followed is binding upon all workers. All workers shall be instructed in the safety significance of the lockout procedure.
  • Page 25 Owner’s Responsibility The procedures listed in this manual may not include all ANSI, OSHA, or locally required safety procedures. It is the owner/operator’s responsibility and not Wood-Mizer Products to ensure all operators are properly trained and informed of all safety protocols.
  • Page 26 Safety Safety Instructions 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 27 Safety Safety Instructions UP/DOWN SYSTEM SAFETY WARNING! Always secure the saw head with a 5/16" chain with at least 1900 lbs. working load capacity before adjusting the up/down chain. The saw head may fall, causing severe injury or death. WARNING! Always secure the saw head with a 5/16"...
  • Page 28 Safety Safety Instructions GENERAL TRAILER SAFETY DANGER! Make sure your hitch has adequate safety chain hook- ups. Do not use eyebolts for safety chain hook-up. Safety chains should be hooked to bumper of vehicle so that each chain would pull the trailer equally in the event the hitch became disengaged. Failure to do so may result in serious personal injury and/or severe machine damage.
  • Page 29 Safety Safety Instructions ADDITIONAL SAFETY FOR ELECTRIC BRAKE TRAILERS DANGER! Make sure the electric brake wire is secured as close to the trailer axle as possible to prevent wire disconnection during towing. Failure to do so may result in serious personal injury and/or severe machine damage.

  • Page 30: Sawmill Setup

    Sawmill Setup Stationary Sawmill Setup SECTION 3 SAWMILL SETUP Stationary Sawmill Setup Prepare a firm, level area where the sawmill can be anchored. There should be enough room around the sawmill for operators, sawdust removal, log loading and board removal. A cement pad with 5/8”...
  • Page 31 Sawmill Setup Stationary Sawmill Setup See Figure 3-1. Pivot End Rail Side Support Bed Rail Stop Block 600099 FIG. 3-1 Sawmill Setup 50HD07doc072310...

  • Page 32: Portable Sawmill Setup

    Sawmill Setup 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 outrig- ger legs to keep mill level.
  • Page 33 Sawmill Setup Portable Sawmill Setup 1. Unhitch the mill from the vehicle. 2. Lower and set the front three outriggers. To lower, use the provided jack handle to lift the weight from the locking pin. If necessary, rotate the locking pin counterclockwise so that the inner roll pin is free from the outrigger channel notch, then pull the locking pin out to release the outrigger.
  • Page 34 Sawmill Setup Portable Sawmill Setup See Figure 3-3. For Fine Adjust Outriggers (FAOs), lower the outrigger as close to the ground as possible, then secure in place with the locking pin. Adjust the outrigger base so that it contacts the ground. To adjust, use the provided wrench to turn the height adjust- ment nut.
  • Page 35 Sawmill Setup Portable Sawmill Setup 5. Use the feed control handle (left side of control box) to move the cutting head toward the front end of the mill. 6. Lower and set the remaining rear outriggers. Level the sawmill by adjusting the outriggers to raise or lower each end of the sawmill.

  • Page 36: Replacing The Blade

    Sawmill Setup 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 will result in serious injury. WARNING! Always wear gloves and eye protection when handling bandsaw blades.

  • Page 37: Tensioning The Blade

    Sawmill Setup Tensioning The Blade Tensioning The Blade See Figure 3-5. Tension the blade by turning the hydraulic tensioning handle clockwise until the tension gauge indicates the recommended tension. Blade Tensioner Gauge Blade Tensioner Handle Cant Control SM0243 FIG. 3-5 See Table 3-1.

  • Page 38: Tracking The Blade

    Sawmill Setup Tracking The Blade Tracking The Blade 1. Make sure the middle blade housing cover is closed and all persons are clear of the open side of the saw head. 2. Start the engine (or motor). 3. Engage the blade, rotating the blade until the blade positions itself on the wheels. WARNING! Do not spin the blade wheels by hand.
  • Page 39 Sawmill Setup Tracking The Blade occured while adjusting the cant control. 7. Close the middle blade housing cover and replace the large blade housing covers. 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.

  • Page 40: Starting The Engine (Or Motor)

    Sawmill Setup Starting The Engine (or Motor) Starting The Engine (or Motor) See the appropriate manual supplied with your specific engine/motor configuration for starting and operating instructions. 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.

  • Page 41: Board Return

    Sawmill Setup Board Return Board Return WARNING! The automatic board return is intended to assist a second operator in removing boards quickly. Do not use the board return when operating the sawmill alone. Serious injury, death or damage to the equipment may result.
  • Page 42 Sawmill Setup Board Return Boards may not always return in the same path or location. If a board returns in a manner that does not allow the sawyer or off-bearer to maintain control, it may be necessary to stop the reverse motion of the saw head. When the board return is to be used, a second person is required to remove the board as it is returned.

  • Page 43: Sawmill Operation

    Sawmill Operation Hydraulic Control Operation SECTION 4 SAWMILL OPERATION Hydraulic Control Operation The hydraulic control levers become operational when the contacts at the bottom of the carriage touch 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.
  • Page 44 Sawmill 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 lever to move the clamp out toward the loading side of the saw- mill.

  • Page 45: Loading, Turning And Clamping Logs

    Sawmill Operation Loading, Turning And Clamping Logs Loading, Turning And Clamping Logs To Load Logs 1. Move the saw carriage to the front end of the frame. CAUTION! Before loading a log, be sure the cutting head is moved far enough forward so the log does not hit it. Failure to do so may result in machine damage.
  • Page 46 Sawmill Operation Loading, Turning And Clamping Logs To Turn Logs 1. Raise the turner lever to engage the log turner arm. Let the arm rise until it touches the log. 2. Raise the turner chain lever to rotate the log clockwise. Lower the lever to rotate the log counterclockwise.

  • Page 47: Up/Down Operation

    Sawmill Operation Up/Down Operation Up/Down Operation This section describes operation of the up/down system with the standard controls. See the operation section of the Accuset manual for alternate instructions for operating the up/down system. 1. Install a blade, if needed, and check for correct blade tension. (See Section 3.3).

  • Page 48: Blade Guide Arm Operation

    Sawmill Operation Blade Guide Arm Operation 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 49: Clutch/Brake Operation

    Sawmill Operation Clutch/Brake Operation Clutch/Brake Operation NOTE: If your sawmill is equipped with the Autoclutch Option, see the Autoclutch Option manual for clutch operating instructions. 1. Clear any loose objects from the area of the blade, motor, and drive belt. 2.
  • Page 50 Sawmill Operation Clutch/Brake Operation 4. To engage the blade, pull the clutch/brake lever down until it locks in the down position. This engages the drive mechanism, releases the blade brake, and increases the engine speed to full throttle. 5. To disengage the blade, raise the clutch/brake lever to the up position. This disengages the drive belt, engages the blade brake, and returns the engine to idle.

  • Page 51: Power Feed Operation

    Sawmill Operation Power Feed Operation Power Feed Operation See Figure 4-5. 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. 4-5 Carriage Feed Rate The carriage feed rate switch controls the speed at which the carriage travels forward.
  • Page 52 Sawmill 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 53: Cutting The Log

    Cutting The Log 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, move the saw head to posi- tion the blade close to the end of the log.
  • Page 54 Sawmill Operation Cutting The Log 10. Lower the toe boards, if they were used. Use the hydraulic levers to release the clamp and engage the log turner. Turn the log 90 or 180 degrees. Make sure the flat on the log is placed flat against side supports if turned 90 degrees.

  • Page 55: Edging

    Sawmill Operation Edging 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.

  • Page 56: Optional Cutting Procedure

    Sawmill Operation Optional Cutting Procedure Optional Cutting Procedure In order to achieve maximum production rates, it may be desirable to leave the blade engaged when returning the carriage. (Normal operation procedures recommend disen- gaging the blade before returning the carriage for maximum blade life and fuel economy.) DANGER! If leaving the blade engaged for maximum pro- duction rates, make sure the off-bearer stays out of the...

  • Page 57: Blade Height Scale

    Sawmill Operation Blade Height Scale 4.10 Blade Height Scale See Figure 4-6. The blade height scale is attached to the carriage head frame. It includes: a blade height indicator an inch scale a quarter scale Blade Height Indicator Quarter Scale Inch Scale 3H0893 FIG.
  • Page 58 Sawmill Operation Blade Height Scale The Quarter Scale See Table 4-1. Two quarter scales are provided with four sets of marks. Each set repre- sents a specific lumber thickness. Saw kerf and shrinkage allowance are included, but actual board thickness will vary slightly depending on blade thickness and tooth set. To choose which scale to use, determine what finished thickness you want to end up with.

  • Page 59: Water Lube Operation

    15 seconds. This will clean the blade of sap buildup. Wipe the blade dry with a rag before storing or sharpening. For further lubrication benefits, add one 12oz. bottle of Wood-Mizer Lube Additive to 5 gallons of water. Wood-Mizer Lube Additive enables some previously impossible timbers to be cut by significantly reducing resin buildup on the blade.
  • Page 60 Sawmill Operation Water Lube Operation fuels or liquids such as diesel fuel. If these types of liquids are necessary to clean the blade, remove it and clean with a rag. Failure to do so can damage the equipment and may result in serious injury or death.

  • Page 61: Preparing The Sawmill For Towing

    Sawmill Operation Preparing The Sawmill For Towing 4.12 Preparing The Sawmill For Towing The Wood-Mizer trailer package makes transporting your sawmill easy and convenient. To get your sawmill ready for towing, follow these instructions. CAUTION! If the weight of the sawmill exceeds 3,000 lbs (1361 Kg) for any reason, an auxiliary braking system (such as electric brakes) must be used.
  • Page 62 Sawmill Operation Preparing The Sawmill For Towing 2. Move the clamp all the way in toward the main bed frame tube. CAUTION! Move the hydraulic clamp and turner to provide maximum ground clearance before towing. Failure to do so may result in damage to the sawmill. 3.
  • Page 63 Sawmill Operation Preparing The Sawmill For Towing 9. Continue lowering the head 3/4" (19mm) until it contacts the stop blocks on the mast rails. CAUTION! It is important that the lower stop bolts are prop- erly adjusted to secure the carriage on the track rail. Failure to properly adjust the stop bolts can cause saw head dam- age, especially during mill transportation.
  • Page 64 Sawmill Operation Preparing The Sawmill For Towing See Figure 4-11. FIG. 4-11 CAUTION! Check to be sure the saw head safety chain is secured before towing the sawmill. Failure to properly secure the saw head can result in severe machine damage. Be sure the blade housing and pulley covers are in place and secure.

  • Page 65: Maintenance

    Wear Life SECTION 5 MAINTENANCE This section lists the maintenance procedures that need to be performed. See the Maintenance Log located after this section for a complete list of maintenance procedures and intervals. Keep track of machine maintenance by filling in the machine hours and the date you perform each procedure.

  • Page 66: Blade Guides

    Maintenance Blade Guides Blade Guides WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 67 Maintenance Blade Guides See Figure 5-1. Rev. A2.01+: To adjust the top block down, loosen the clamp bolt and mounting bolt. Turn the adjust- ment bolt clockwise. Retighten the mounting bolt and clamp bolt. To adjust the bottom block up, loosen the clamp bolt and mounting bolt. Use the provided adjustment tool to turn the adjustment screw clockwise.
  • Page 68 Preventing sap buildup on the blade is critical when using the high-performance blade guide system. If the wood you are sawing leaves sap buildup using plain water in the blade lube system, use Wood-Mizer lube additive (4-Pak 60 oz. bottles part no. ADD-1). 50HD07doc072310...
  • Page 69 Maintenance Blade Guides 4. 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 500 hours of operation. Failing to maintain this adjustment will lead to early blade breakage.

  • Page 70: Sawdust Removal

    Maintenance Sawdust Removal Sawdust Removal WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 71: Carriage Track, Wiper & Scrapers

    Maintenance Carriage Track, Wiper & Scrapers Carriage Track, Wiper & Scrapers WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 72 Maintenance Carriage Track, Wiper & Scrapers 3. Check the track scrapers as needed. Make sure the scrapers fit firmly against the rail. If a track scraper needs to be adjusted, loosen the screw, push the scraper downward until it fits firmly against the rail, and retighten the screw. Carriage track Remove track wiper, clean...

  • Page 73: Vertical Mast Rails

    Maintenance Vertical Mast Rails Vertical Mast Rails WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 74: Drum Switches

    Lubricate the up/down and power feed drum switch contacts inside the control panel every fifty hours of operation. Use only contact grease supplied by Wood-Mizer. Remove the control panel cover. Use a cotton swab to apply grease to the switch contact ends.

  • Page 75: Miscellaneous

    Maintenance Miscellaneous Miscellaneous WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 76 Maintenance Miscellaneous 6. Check the mill alignment every setup (See Section 7. Make sure all safety warning decals are readable. Remove sawdust and dirt. Replace any damaged or unreadable decals immediately. Order decals from your Customer Service Representative. 5-12 50HD07doc072310 Maintenance...

  • Page 77: Blade Tensioner

    Maintenance Blade Tensioner Blade Tensioner WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 78 Maintenance Blade Tensioner See Figure 5-7. Add an Automatic Transmission Fluid (ATF) such as Dexron III ATF to the hydraulic blade tensioner as needed. To add enough fluid to completely fill the ten- sioner block: 1. Unscrew the tensioner handle to reveal 2” of thread. Remove the sawmill blade housing covers and blade.

  • Page 79: Blade Wheel Belts

    Maintenance Blade Wheel Belts Blade Wheel Belts WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 80: Brake Strap Adjustment

    Maintenance Brake Strap Adjustment 5.10 Brake Strap Adjustment WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 81: Drive Belt Adjustment

    Maintenance Drive Belt Adjustment 5.11 Drive Belt Adjustment NOTE: If your sawmill is equipped with the Autoclutch Option, see the Autoclutch Option manual for drive belt adjustment instructions. WARNING! Disconnect and lockout power before perform- ing any service to the electrical system. For battery-pow- ered equipment, disconnect the negative battery terminal cable.
  • Page 82 Maintenance Drive Belt Adjustment Loosen jam nuts Turnbuckle counterclockwise to tighten belt 3H0287B FIG. 5-9 3. Place a wrench on the flats at the top of the turnbuckle. Use a second wrench to turn the bottom-most jam nut clockwise (as viewed from the bottom) to tighten the belt, counter- clockwise to loosen the belt.
  • Page 83 Maintenance Drive Belt Adjustment See Figure 5-10. To adjust the drive belt support: 1. Make sure the motor is not running. Loosen the adjustment bolts. 2. Position the bracket so that the prong is close to, but does not touch, the drive belt with the clutch handle engaged.

  • Page 84: Hydraulic System

    Maintenance Hydraulic System 5.12 Hydraulic System WARNING! Disconnect and lockout power before perform- ing any service to the electrical system. For battery-pow- ered equipment, disconnect the negative battery terminal cable. Failure to do so may result in injury and/or electrical system damage.
  • Page 85 Maintenance Hydraulic System 3. Inspect the hydraulic pump motor brushes every 750 hours of operation. Remove brush dust and replace the brushes if they worn to a length of 1/4” or shorter. CAUTION! Do not operate the hydraulic system if the pump motor brushes are worn shorter than 1/4”.

  • Page 86: Drive Bearing

    Maintenance Drive Bearing 5.13 Drive Bearing WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 87: Up/Down System

    Maintenance Up/Down System 5.14 Up/Down System WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 88 Maintenance Up/Down System 1. Grease the up/down gear reducer shaft bearing with a NLGI No. 2 grade lithium grease every 1000 hours of operation. 1000 See Figure 5-14. Up/Down Gear Reducer Shaft Bearing 3H0016B FIG. 5-14 2. Adjust the up/down belt as needed. Remove the up/down housing cover. To tighten the belt, loosen the motor mount nuts.
  • Page 89 Maintenance Up/Down System Wood-Mizer offers replacement gear oil in 8 ounce bottles. 5. Inspect the up/down motor brushes every 750 hours of operation. Remove brush dust and replace the brushes if they worn to a length of 5/8” or shorter.

  • Page 90: Power Feed

    Maintenance Power Feed 5.15 Power Feed WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 91 Maintenance Power Feed Periodically check the belt for wear. Replace any damaged or worn belts as needed. 2. 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 at the rear of the mill to tighten or loosen the power feed chain.
  • Page 92 Maintenance Power Feed See Figure 5-17. Refer to the diagram for power feed chain routing instructions. Route chain under bottom sprocket, between both sprockets, then over Feed Chain top sprocket Sprockets 3H0692 FIG. 5-17 3. Inspect the power feed motor brushes every 750 hours of operation. Remove brush dust and replace the brushes if they worn to a length of 5/8”...

  • Page 93: Charging The Battery

    Maintenance Charging The Battery 5.16 Charging The Battery DANGER! Batteries expel explosive gases. Keep sparks, flames, burning cigarettes, or other ignition sources away at all times. Always wear safety goggles and a face shield when working near batteries. Failure to do so will cause serious injury.
  • Page 94 Maintenance Charging The Battery CAUTION! Be sure the battery is fully charged before transporting the sawmill. If the battery is not fully charged, excessive vibration could reduce the overall service life of the battery. NOTE: A fuse terminal extension stud is provided in the fuse box.

  • Page 95: Turner Chain Tension

    Maintenance Turner Chain Tension 5.17 Turner Chain Tension WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 96: Maintenance Log

    MAINTENANCE LOG (Check Engine And Option Manuals For Additional Maintenance Procedures) Check Blade Guide Block/Roller Wear See Section 5.2 Daily - Every Blade Change Remove Excess Sawdust From Blade Wheel Hous- See Section 5.3 Daily - Every Blade Change DAILY MAINTENANCE PROCEDURES ings And Sawdust Chute Inspect Fingers Inside Sawdust Chute See Section 5.3...
  • Page 97 MAINTENANCE LOG (Check Engine And Option Manuals For Additional Maintenance Procedures) TOTAL HOURS OF OPERATION MANUAL FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE. PROCEDURE REFERENCE A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME. 550 HRS 600 HRS 650 HRS...
  • Page 98 MAINTENANCE LOG (Check Engine And Option Manuals For Additional Maintenance Procedures) TOTAL HOURS OF OPERATION MANUAL FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE. PROCEDURE REFERENCE A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME. 1050 HRS 1100 HRS 1150 HRS...
  • Page 99 MAINTENANCE LOG (Check Engine And Option Manuals For Additional Maintenance Procedures) TOTAL HOURS OF OPERATION MANUAL FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE. PROCEDURE REFERENCE A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME. 1550 HRS 1600 HRS 1650 HRS...
  • Page 100 MAINTENANCE LOG (Check Engine And Option Manuals For Additional Maintenance Procedures) TOTAL HOURS OF OPERATION MANUAL FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE. PROCEDURE REFERENCE A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME. 2050 HRS 2100 HRS 2150 HRS...
  • Page 101 MAINTENANCE LOG (Check Engine And Option Manuals For Additional Maintenance Procedures) TOTAL HOURS OF OPERATION MANUAL FILL IN THE DATE AND THE MACHINE HOURS AS YOU PERFORM EACH PROCEDURE. PROCEDURE REFERENCE A SHADED BOX INDICATES MAINTENANCE IS NOT NEEDED AT THIS TIME. 2550 HRS 2600 HRS 2650 HRS...

  • Page 102: Troubleshooting Guide

    Troubleshooting Guide Sawing Problems SECTION 6 TROUBLESHOOTING GUIDE Sawing Problems WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.
  • Page 103 Troubleshooting Guide Sawing Problems PROBLEM CAUSE SOLUTION Boards Thick Or Thin On Stress in log which causes log After log has been squared, take Ends Or Middle Of Board. to not lay flat on the bed. equal cuts off opposing sides. Take a board off the top.

  • Page 104: Electrical Problems

    Replace drum switch or remove control panel cover and clean and lubri- cate contacts NOTE: Use only contact grease supplied by Wood-Mizer. Drum switch spring broken. Manually move the power feed or up/down switch back to neutral or "off"...
  • Page 105 Troubleshooting Guide Electrical Problems PROBLEM CAUSE SOLUTION Up/Down Or Power Feed System overload or bind Correct problem (See Section 6.4 Motors Overheat And Lose occurred. Allow motor to cool before restarting. Power. Normal operation factors Allow motor to cool before restarting. exceeded (eg: up/down con- trol jockeyed excessively).

  • Page 106: Power Feed Problems

    Drum switch is dirty. Clean drum switch and lubricate Speeds Or Does Not Move with contact grease supplied by Until Speed Is Above Halfway Wood-Mizer. Mark. Drum switch contacts are bad Check that contacts are in good condition and positively close cir- cuit.
  • Page 107 Troubleshooting Guide Power Feed Problems PROBLEM CAUSE SOLUTION Power Feed Motor Overheats. Middle track oiler is dragging. Clean middle track oiler and lubricate with 30-weight oil or ATF (Automatic Transmission Fluid) such as Dexron II. Allow motor to cool before restarting. Ground is not level.

  • Page 108: Power Feed Circuit Troubleshooting

    Troubleshooting Guide Power Feed Circuit Troubleshooting Power Feed Circuit Troubleshooting LED lights are provided on the control module to help troubleshoot any feed problems you may encounter. See Figure 6-1. The lights can be viewed by removing the rear control box panel VBAT LED Bar Graph OUT1...
  • Page 109 Troubleshooting Guide Power Feed Circuit Troubleshooting See Table 6-1. The drum switch positions and light states with the feed rate dial switch all the way up are shown below. Power Feed Drum Switch Position FORWARD REVERSE NEUTRAL TABLE 6-1 Please contact Customer Service for assistance if necessary when troubleshooting the system using these lights.
  • Page 110 Troubleshooting Guide Power Feed Circuit Troubleshooting The LED Bar Graph located on the power feed board can also be used to troubleshoot feed problems. Check below for different codes on the LED Bar Graph to find the prob- lem. See Figure 6-2. The operational codes of the LED Bar Graph are shown below. SM0314-2B Key On, Bridge Enabled, Power Feed Drum Switch in Forward Position, Power Feed Potentiometer Off, No Faults...

  • Page 111: Hydraulic Problems

    Tapping on solenoid may fix tem- troubleshooting solenoid porarily. Replace solenoid if necessary. NOTE: The solenoid is not a standard automotive type. Order from Wood-Mizer only Defective pump motor Remove motor from pump and inspect. Repair or replace as necessary Troubleshooting Guide...
  • Page 112 Troubleshooting Guide Hydraulic Problems PROBLEM CAUSE SOLUTION You Can Get Response From Valve assembly switch con- Locate the valve switch at the bottom the Pump By Actuating All tacts are not properly of the valve assembly. Use a 3MM But One or Two Handles adjusted allen wrench to loosen the set screw on each of the five switch contacts.
  • Page 113 Troubleshooting Guide Hydraulic Problems PROBLEM CAUSE SOLUTION Hydraulic Side Supports Go Dirt in sequence valve Remove sequence valves and clean Down Before Or At Same thoroughly with kerosene. NOTE: Be Time As Log Turner sure to reassemble the valve and install it in its original position on the cylinder Retainer in sequence valve...
  • Page 114 Troubleshooting Guide Hydraulic Problems PROBLEM CAUSE SOLUTION Hydraulic Toe Boards Can be a result of shock load INITIAL CHECK "Creep" UP without the caused by improperly using To check, disconnect the toe board valve control handles being the toe boards to "cushion" hydraulic hose from its current valve operated.
  • Page 115 Troubleshooting Guide Hydraulic Problems PROBLEM CAUSE SOLUTION Hydraulic Toe Boards or Can be a result of shock load INITIAL CHECK Clamp "Creep" DOWN with- caused by improperly using To check, disconnect the toe board out the valve control han- the toe boards or clamp to hydraulic hose from its current valve dles being operated OR do "cushion"...
  • Page 116 Troubleshooting Guide Hydraulic Problems PROBLEM CAUSE SOLUTION Pump runs but makes Low fluid level Check fluid level and add fluid as nec- “growling” sound and essary. Check for leaks in the system hydraulic functions are slow, at the control box fittings, hoses and jerky or don’t work at all.

  • Page 117: Engine/Motor And Drive Pulleys Alignment

    Troubleshooting Guide Engine/Motor and Drive Pulleys Alignment Engine/Motor and Drive Pulleys Alignment WARNING! Before performing service near moving parts such as blades, pulleys, motors, belts and chains, first turn the key switch to the OFF (#0) position and remove the key. If the key is turned on and moving parts activated, serious injury may result.

  • Page 118: Power Feed Variable Feed Rate Switch Test

    Troubleshooting Guide Power Feed Variable Feed Rate Switch Test Power Feed Variable Feed Rate Switch Test With the feed rate dial switch all the way down, move the shaft of the dial back and forth to see if there is a jerky response. Turn the dial and move the shaft back and forth again. Repeat several times.

  • Page 119: Power Feed Preliminary Test

    Troubleshooting Guide Power Feed Preliminary Test Power Feed Preliminary Test This test will determine if the problem is mechanical or electrical. 1. Remove the drive belt from the power feed drive pulley. 2. Turn the key switch to the ACC position. Put the carriage forward/reverse switch into the forward position and turn the feed rate dial through all speeds.

  • Page 120: Power Feed Mechanical Test

    Troubleshooting Guide Power Feed Mechanical Test Power Feed Mechanical Test 1. Remove the weight from the track rollers. They should turn smoothly and easily with very little play. 2. Make sure the middle track cover is not bent or touching the top rail. 3.

  • Page 121: Hydraulic Pressure Test

    Troubleshooting Guide Hydraulic Pressure Test 6.10 Hydraulic Pressure Test To check hydraulic pressure: See Figure 6-4. Hydraulic Pressure Gauge Relief Valve Adjustment Screw 600013-3 FIG. 6-4 Operate the loading arm hydraulic lever and read the pressure on the gauge. Hydraulic pressure is factory-set at 2200 psi and should not need to be readjusted.

  • Page 122: Fuse Terminal Extension Stud

    Troubleshooting Guide Fuse Terminal Extension Stud 6.11 Fuse Terminal Extension Stud LT50HD Rev. A1.01 - A4.00 A fuse terminal extension stud is provided in the fuse box. The extension may be used to temporarily connect a battery charger or jumper cables to raise the saw head from the towing position so the battery box lid can be removed.

  • Page 123: Lt50Hd Rev. A1.01 - A4.00

    Troubleshooting Guide LT50HD Rev. A1.01 - A4.00 3. Attach the positive cable from a battery charger or jumper cables to the extension stud. 4. Connect the negative cable from the charger or jumper cables to a grounded metal sur- face. The mounting bolts on the bottom of the control box are an acceptable ground.

  • Page 124: Circuit Breaker Operation

    Troubleshooting Guide Circuit Breaker Operation 6.12 Circuit Breaker Operation Sawmill controls are equipped with manual reset circuit breakers to protect the electrical circuits. See Figure 6-6. he power feed and up/down breakers are externally mounted at the front of the control box. The blade guide, accessory, ignition, start and board return breakers are located inside the control box.

  • Page 125: Sawmill Alignment

    Routine Alignment Procedure SECTION 7 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 126: Saw Head Tilt

    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 1/16" (1.5 mm) higher at the out- side.
  • Page 127 Sawmill Alignment Routine Alignment Procedure See Figure 7-2. To adjust the saw head tilt, use the horizontal adjustment nuts. To raise the outside of the saw head, loosen the four inner adjustment nuts 1/4 turn and tighten the four outer nuts. Recheck the measurement from the blade to the bed rails and adjust the horizontal adjustment nuts until the outside of the saw head is 1/16"...

  • Page 128: Blade Guide Arm Alignment

    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 deflect the blade properly, causing inaccurate cuts. A loose blade guide arm can also cause blade vibration.
  • Page 129 Sawmill Alignment Routine Alignment Procedure After tightening the blade guide arm rollers, check that the arm is aligned properly. 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. See Figure 7-4.
  • Page 130 Sawmill Alignment Routine Alignment Procedure See Figure 7-5. To tilt the arm in toward the blade, loosen the front nuts on the outer roll- ers and tighten the rear nuts. To tilt the arm out away from the blade, loosen the rear nuts on the outer rollers and tighten the front nuts.
  • Page 131 Sawmill Alignment Routine Alignment Procedure See Figure 7-6. Measure from blade guide arm to bed rail with arm open and closed 3H0802-11 FIG. 7-6 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 132 Sawmill Alignment Routine Alignment Procedure See Figure 7-7. Remove the blade housing cover to access the blade guide arm roller mounting bolts. To adjust the rollers, loosen the jam nuts on the other side of the blade housing and turn the mounting bolts. To tilt the blade guide arm down, adjust the outer top and bottom rollers up.

  • Page 133: Blade Guide Vertical Tilt Alignment

    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.
  • Page 134 Sawmill Alignment Routine Alignment Procedure See Figure 7-9. Loosen the jam nuts on the top and bottom vertical tilt adjustment screws. To tilt the roller up, loosen the bottom screw and tighten top screw. To tilt the roller down, loosen the top screw and tighten the bottom screw. Tighten the jam nuts and recheck the tilt of the blade.

  • Page 135: Blade Guide Horizontal Tilt Adjustment

    Sawmill Alignment Routine 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.
  • Page 136 Sawmill Alignment Routine Alignment Procedure 3H0802-19B Blade Guide Alignment Tool FIG. 7-10REV. A2.01 10. Measure between the back edge of the blade and the tool at the end closest to the inner blade guide ("B"). 11. Measure between the back edge of the blade and the other end of the tool ("A"). The roller should be tilted slightly to the left (’A’...
  • Page 137 Sawmill Alignment Routine Alignment Procedure See Figure 7-11. 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 138: Blade Guide Flange Spacing

    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.
  • Page 139 Sawmill Alignment Routine Alignment Procedure Loosen top and one side adjustment screw 1/16” (Inner Blade Guide) 1/8” (Outer Blade Guide) 3H0802-6D FIG. 7-12REV. A2.01 2. Measure the distance between the flange on the inner blade guide roller to the back edge of the blade.

  • Page 140: Manual Side Support Alignment

    Sawmill Alignment Routine Alignment Procedure Manual Side Support Alignment Logs and boards are clamped against the side supports when sawing. The sides supports must be square to the bed to ensure square lumber. 1. Swing a side support down and measure between the face of the support and the main bed tube.
  • Page 141 Sawmill Alignment Routine Alignment Procedure See Figure 7-14. Loosen the side support mounting bolt. Use a 3/8" ratchet to rotate the pin until the side support is square to the bed. Alignment Tubes (2) Place square against side support Loosen mounting bolt SM0272-1 Use 3/8”...

  • Page 142: Hydraulic Side Support Alignment

    Sawmill Alignment Routine Alignment Procedure Hydraulic Side Support Alignment Place the square against the face of the side support. The side support should be square or slightly tilted forward 1/32" (0.8 mm). Adjust the vertical tilt of the side support if neces- sary.

  • Page 143: Blade Height Scale Adjustment

    Sawmill Alignment Routine 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 carriage so the blade is positioned directly above one of the bed rails. Mea- sure 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 144: 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, shim the feet so the weight of the sawmill is evenly supported.

  • Page 145: Blade Installation

    Sawmill Alignment Complete Alignment Procedure Blade Installation 1. Remove the blade and replace the blade wheel belts. New blade wheel belts are required to perform the complete alignment procedure. 2. Blow sawdust off of the blade guide assemblies. Remove sawdust from the blade hous- ings.

  • Page 146: Saw Head Slide Pad Adjustment

    Sawmill Alignment Complete Alignment Procedure Saw Head Slide Pad Adjustment There are eight nylon pads positioned between the saw head frame and vertical mast. The spacing of the pads is factory set and rarely needs adjusting. To check the pad spac- ing, perform the following steps.
  • Page 147 Sawmill Alignment Complete Alignment Procedure 3. To adjust the spacing of the upper set of pads, lower the saw head until you can access the upper slide pad adjustment bolts. 4. Loosen the upper locking bolts and turn the adjusting bolt as necessary to provide the pad spacing described in Step 1.

  • Page 148: Blade Wheel Alignment

    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.
  • Page 149 Sawmill Alignment Complete Alignment Procedure See Figure 7-19. Use the vertical adjustment screws to adjust the drive-side blade wheel. To tilt the wheel up, loosen the top adjustment screw one quarter turn. Loosen the jam nut on the bottom adjustment screw and tighten the screw to 30 ft.-lbs torque. Tighten the top and bottom jam nuts.
  • Page 150 Sawmill Alignment Complete Alignment Procedure nut on the bottom adjustment screw and tighten the screw. Tighten the top and bottom jam nuts. Adjust vertical adjustment screws up to tilt idle-side blade wheel down; Adjust screws down to tilt wheel up 3H0802-13 FIG.
  • Page 151 Sawmill Alignment Complete Alignment Procedure 9. Check the position of the blade on the idle-side blade wheel. See Figure 7-21. The horizontal tilt of the blade wheel should be adjusted so that the gul- let of an 1-1/4" blade is 1/8" (3 mm) out from the front edge of the wheel (±1/16 [1.5 mm]). The gullet of an 1-1/2"...
  • Page 152 Sawmill Alignment Complete Alignment Procedure 10. Check the position of the blade on the drive-side blade wheel. The blade should be posi- tioned on the wheel as described for the idle-side blade wheel. Adjust the drive-side blade wheel if necessary. See Figure 7-23.

  • Page 153: Track Roller Adjustment

    Sawmill Alignment Complete Alignment Procedure Track Roller Adjustment Making these adjustments correctly will insure the saw carriage travels smoothly along the track and blade will remain parallel with the bed frame. 1. Using the feed controls, move the saw carriage so that the blade is positioned over the front pivot end rail.
  • Page 154 Sawmill Alignment Complete Alignment Procedure 4. Move the carriage forward until the blade is positioned over the rear pivot end rail. Repeat steps 2 & 3 until all lower rollers are adjusted properly at the front and rear of the sawmill. 5.
  • Page 155 Sawmill Alignment Complete Alignment Procedure See Figure 7-26. To adjust the saw head tilt, use the horizontal adjustment nuts. To raise the outside of the saw head, loosen the four inner adjustment nuts 1/2 turn then tighten the four outer nuts. To lower the outside of the saw head, loosen the four outer adjust- ment nuts 1/2 turn then tighten the inner nuts.

  • Page 156: Bed Rail Adjustment

    Sawmill Alignment Complete Alignment Procedure Bed Rail Adjustment 1. Move the clamp so it is 10" from the clamp stop. Adjust the clamp down to its lowest pos- tion. Move the saw head forward until it is positioned over the clamp. Raise the saw head until the blade measures 15 5/16"...
  • Page 157 Sawmill Alignment Complete Alignment Procedure See Figure 7-28. Loosen the bed rail clamping bolts and turn the adjustment bolts to move the bed rails to the blade if necessary. Retighten the clamping bolts and adjustment bolt jam nuts. Blade 15“ (375.0 mm) 15“...

  • Page 158: Blade Guide Installation

    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 159 Sawmill Alignment Complete Alignment Procedure 2. Loosen the top block clamp bolt and mounting bolt. Turn the adjustment bolt counter- clockwise to raise the top block all the way up. Remove the bottom guide block from each blade guide assembly and install the provided alignment bar. 3.
  • Page 160 Sawmill Alignment Complete Alignment Procedure See Figure 7-30. Tighten the two previously-loosened tilt adjustment screws to secure the blade guide assembly. Rev. A2.01 - A5.02: Turn the top adjustment bolt clockwise to raise the blade guide assembly so the roller does not contact the blade. NOTE: Before adjusting the top bolt, unload pressure on the bolt by turning 1/2 turn in the opposite direction it was last adjusted.
  • Page 161 Sawmill Alignment Complete Alignment Procedure Top Vertical Adjustment Jam Nut 3H0802-16C Bottom Vertical Adjustment Jam Nut FIG. 7-30 Sawmill Alignment 50HD07doc072310 7-37...

  • Page 162: Blade Guide Arm Alignment

    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 163 Sawmill Alignment Complete Alignment Procedure After tightening the blade guide arm rollers, check that the arm is aligned properly. 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. See Figure 7-32.
  • Page 164 Sawmill Alignment Complete Alignment Procedure See Figure 7-33. To tilt the arm out away from the blade, loosen the front nuts on the inner rollers and tighten the rear nuts. To tilt the arm in toward the blade, loosen the rear nuts on the inner rollers and tighten the front nuts.
  • Page 165 Sawmill Alignment Complete Alignment Procedure See Figure 7-34. 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 mea- surement should be 15" (376.5 mm). If the measurements are not the same, adjust the outer rollers up or down to tilt the blade guide arm vertically.
  • Page 166 Sawmill Alignment Complete Alignment Procedure See Figure 7-35. Remove the blade housing cover to access the blade guide arm roller mounting bolts. To adjust the rollers, loosen the jam nuts on the other side of the blade housing and turn the mounting bolts. To tilt the blade guide arm down, adjust the outer top and bottom rollers up.

  • Page 167: Blade Guide Deflection

    Sawmill Alignment Complete Alignment Procedure Blade Guide Deflection Perform the following steps to achieve proper blade deflection with the blade guides. 1. Raise the saw head until the blade is 15" (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 168 Sawmill Alignment Complete Alignment Procedure See Figure 7-36. Rev. A2.01 - A5.02: Turn the top adjustment bolt counterclockwise to lower the assembly until the blade guide roller deflects the blade down until the bottom of the blade measures 14 3/4" (370 mm) from the bed rail. Turn top adjustment bolt counterclockwise to lower blade guide roller...
  • Page 169 Sawmill Alignment Complete Alignment Procedure Sawmills prior to Rev. A2.01: Loosen the bottom jam nut and tighten the top jam nut until the blade guide deflects the blade down until the bottom of the blade measures 14 3/4" (370 mm) from the bed rail. CAUTION! Be careful when tightening the vertical adjust- ment screws.

  • Page 170: Blade Guide Vertical Tilt Alignment

    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.
  • Page 171 Sawmill Alignment Complete Alignment Procedure See Figure 7-38. Loosen the jam nuts on the top and bottom vertical tilt adjustment screws. To tilt the roller up, loosen the bottom screw and tighten top screw. To tilt the roller down, loosen the top screw and tighten the bottom screw. Tighten the jam nuts and recheck the tilt of the blade.

  • Page 172: Blade Guide Horizontal Tilt Adjustment

    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.
  • Page 173 Sawmill Alignment Complete Alignment Procedure 3H0802-19B Blade Guide Alignment Tool FIG. 7-39REV. A2.01 3. Measure between the back edge of the blade and the tool at the end closest to the inner blade guide ("B"). 4. Measure between the back edge of the blade and the other end of the tool ("A"). The roller should be tilted slightly to the left (’A’...
  • Page 174 Sawmill Alignment Complete Alignment Procedure See Figure 7-40. 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 175: Blade Guide Flange Spacing

    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.

  • Page 176: Blade Guide Level (Optional High-Performance Blocks Only)7-52

    Sawmill Alignment Complete Alignment Procedure Blade Guide Level (Optional High-Performance blocks only) Perform the following adjustments to make sure the blade guide assembly is parallel to the blade. 1. Loosen the alignment bar mounting bolt. Use the provided bottom block adjustment tool to adjust the alignment bar up so the bar is close to, but not touching the bottom of the blade.

  • Page 177: Blade Block Adjustment (Optional High-Performance Blocks Only)7-53

    Sawmill Alignment Complete Alignment Procedure Blade Block Adjustment (Optional High-Performance blocks only) 1. Remove the blade and remove the alignment bars from the blade guide assemblies. Install new or reconditioned bottom guide blocks to both blade guide assemblies (leave mounting bolts loose). Use the provided bottom block adjustment tool to lower the bottom block all the way down.

  • Page 178: Manual Side Support Alignment

    Sawmill Alignment Complete Alignment Procedure Manual Side Support Alignment Logs and boards are clamped against the side supports when sawing. The sides supports must be square to the bed to ensure square lumber. 1. Swing a side support down and measure between the face of the support and the main bed tube.
  • Page 179 Sawmill Alignment Complete Alignment Procedure See Figure 7-44. Loosen the side support mounting bolt. Use a 3/8" ratchet to rotate the pin until the side support is square to the bed. Alignment Tubes (2) Place square against side support Loosen mounting bolt SM0272-1 Use 3/8”...

  • Page 180: Hydraulic Side Support Alignment

    Sawmill Alignment Complete Alignment Procedure Hydraulic Side Support Alignment Place the square against the face of the side support. The side support should be square or slightly tilted forward 1/32" (0.8 mm). Adjust the vertical tilt of the side support if neces- sary.

  • Page 181: Clamp Stop/Stop Bolt Adjustment

    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 to the stop block at the first bed rail. Stretch the string toward the rear of the frame and tie to the stop block at the last bed rail.

  • Page 182: Saw Head Tilt

    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 out- side.
  • Page 183 Sawmill Alignment Complete Alignment Procedure See Figure 7-48. To adjust the saw head tilt, use the horizontal adjustment nuts. To raise the outside of the saw head, loosen the four inner adjustment nuts 1/4 turn and tighten the four outer nuts. Recheck the measurement from the blade to the bed rails and adjust the horizontal adjustment nuts until the outside of the saw head is 1/16"...

  • Page 184: Blade Height Scale Adjustment

    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 carriage so the blade is positioned directly above one of the bed rails. Mea- sure 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 185: Board Return Bracket

    Sawmill Alignment Complete Alignment Procedure Board Return Bracket Adjust the board return bracket so the bottom edge is positioned 1/4" below the bottom of the blade. 1. With a square cant on the bed rails, lower the blade until it touches the top of the cant. Then raise the saw head 1/4"...

  • Page 186: Hydraulic Information

    Hydraulic Information Hydraulic Schematic SECTION 8 HYDRAULIC INFORMATION Hydraulic Schematic RELIEF VALVE SETTING 2200 PSI RELIEF VALVE SETTING 2250 PSI 600022F FIG. 8-1 HYDRAULIC SCHEMATIC 50HD07doc072310 Hydraulic Information...

  • Page 187: Hydraulic Layout Diagram

    Hydraulic Information Hydraulic Layout Diagram Hydraulic Layout Diagram Log Loader Clamp Clamp In/Out Up/Down Turner Front Rear Toe Board Toe Board Side Supports (Shown with handles down) 600236B Crossflow Hose (1/2") FIG. 8-2 HYDRAULIC LAYOUT DIAGRAM. Hydraulic Information 50HD07doc072310...

  • Page 188: Hydraulic Components

    Hydraulic Information Hydraulic Components Hydraulic Components Mfg. Part No. Manufacturer Wood-Mizer Description Part.# 017275 J-D Hydraulic 017275 Hyd. Cylinder, 3" Bore X 7" Stroke PMC-19410 Prince Mfg. 015050 Hyd. Cylinder, 1 1/2" Bore X 10" Stroke 034267 J-D Hydraulic 034267 Hyd.

  • Page 189: Hydraulic Hoses

    Hydraulic Information Hydraulic Hoses Hydraulic Hoses LT50HD Rev. A4.00 - A5.02 Color LENGTH Application PART # Code "A" Purple 219” 1/4” Rear Toe Board Top 018026 Black 219” 1/4” Rear Toe Board Base 018026 Yellow 117” 1/4” Front Toe Board Top...

  • Page 190: Lt50Hd

    Hydraulic Information Hydraulic Hoses Hydraulic Hoses LT50HD Rev. A1.01 - A3.00 Color LENGTH Application PART # Code "A" Purple 219” 1/4” Rear Toe Board Top 018026 Black 219” 1/4” Rear Toe Board Base 018026 Yellow 117” 1/4” Front Toe Board Top...

  • Page 191: Index

    INDEX alignment hydraulic lower track rollers 7-29 component list main bed rails 7-32 control operation slide pad adjustment 7-29 fluid level 5-20 hose list 8-4, 8-5 layout diagram schematic troubleshooting problems 6-10 battery charging with fuse terminal extension 6-21 troubleshooting problems belt leveling logs tension...
  • Page 192 turning logs power feed mechanical troubleshooting test 6-19 operation 4-10 up/down preliminary troubleshooting test 6-18 operation speed adjustment troubleshooting problems troubleshooting problems water lube safety operation 4-17 instructions lockout procedure 2-13 symbols scale blade height operation 4-15 inch height 4-15 quarter inch 4-16 service information...

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