Wood-mizer 1992 LT40HD

Questions and Answers

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Jeffrey WilsonSep 23, 2025
Why Wood-mizer 1992 LT40HD battery will not stay charged?
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  brandon24Sep 23, 2025
  Turn the switch OFF when not in use if the key switch is left ON. Visually check for bare wires and/or have checked if there is a short in system. Have the system checked by an authorized Onan dealer if the charging system is not functioning. Check fluid levels and add proper solution if there are bad cells. Adjust low end RPM if the idle is improper. Check for a loose wire and replace the light if necessary if the alternator light is burned out.
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Robert HansonAug 25, 2025
Why Wood-mizer 1992 LT40HD Saw blade does not track right?
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  Brittney EdwardsAug 25, 2025
  If the Wood-Mizer Saw blade does not track right, readjust on the Drive Wheel if the cant adjustment is incorrect. Replace B-57 belts if the belts are flat or worn.
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John CisnerosAug 25, 2025
How to prevent Wood-Mizer Saw blades from dulling quickly?
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  Holly ChristianAug 26, 2025
  To prevent blades from dulling quickly on your Wood-Mizer Saw, clean or debark logs, especially on the entry side of the cut. When grinding teeth, grind just enough metal to restore sharpness and use water/coolant while sharpening. Also, ensure proper sharpening techniques, making sure the tip is being sharpened completely.
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afritzAug 26, 2025
Why do Wood-Mizer Saw blades break prematurely?
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  patricia85Aug 27, 2025
  To avoid premature blade breakage on your Wood-Mizer Saw, replace worn rubber belts on blade wheels (B-57) if the blade contacts the metal pulley. Ensure proper sharpening techniques. Also, tension the blade to the recommended specifications.
D
David SmithAug 27, 2025
What to do if Wood-Mizer Saw lumber is not square?
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  Carl TaylorAug 27, 2025
  If your Wood-Mizer Saw lumber is not square, adjust the side supports so they are square to the bed. Adjust the bed rails to be parallel to the blade. Remove any sawdust or bark between the cant and bed rails. Resharpen and reset the blade to address tooth set problems.
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Mark GarzaSep 13, 2025
Why fluid leaks from Wood-Mizer Saw cylinder piston ram?
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  hughesshannonSep 13, 2025
  If there are fluid leaks from around the cylinder piston ram on your Wood-Mizer Saw, replace the seals in the cylinder if they are worn. Check the piston ram for abrasive weld that may be causing premature seal failure.
S
Sarah MarshallSep 12, 2025
Why Wood-mizer 1992 LT40HD Saw hydraulic side supports go down too early?
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  John GilesSep 12, 2025
  If the hydraulic side supports go down before or at the same time as the log turner on your Wood-Mizer Saw, remove the sequence valves and clean thoroughly with kerosene if there is dirt in the sequence valve. NOTE: Be sure to reassemble the valve and install it in its original position on the cylinder. Replace the sequence valve if the retainer in the sequence valve is worn. Allow fluid to warm up if the air temperature is low. Synthetic fluids are available that allow for hydraulic operation in cold weather conditions (Mobil SHC 526).
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Lori BrownSep 12, 2025
Why Wood-mizer 1992 LT40HD hydraulic turner goes up too early?
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  Kristen McknightSep 12, 2025
  If the hydraulic turner goes up before or at the same time as the side supports on your Wood-Mizer Saw, remove the sequence valves and clean thoroughly with kerosene if there is dirt in the sequence valve. NOTE: Be sure to reassemble the valve and install it in its original position on the cylinder. Replace the sequence valve if the retainer in the sequence valve is worn. Allow fluid to warm up if the air temperature is low. Synthetic fluids are available that allow for hydraulic operation in cold weather conditions (Mobil SHC 526).
A
Allen SmithSep 4, 2025
How to stop Wood-mizer 1992 LT40HD Saw sawdust buildup on track?
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  Alex NealSep 4, 2025
  If you notice sawdust building up on the track of your Wood-Mizer Saw, do not oil the track. Adjust the wipers to firmly contact the track if they are worn. Clean the track with solvent and apply silicone spray if the track is sticky.
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Robert SmithSep 2, 2025
Why Wood-mizer 1992 LT40HD pump motor runs with no response from cylinders?
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  Mary BarnesSep 2, 2025
  If the pump motor runs with little or no response from the cylinders on your Wood-Mizer Saw, test the battery and recharge or replace as necessary. Clean the pressure relief valve (Revisions C7 - E6 Only). Check the fluid level and add an all-season hydraulic fluid until the level is 4 - 4 1/2" from the bottom of the reservoir with all cylinders retracted. Adjust the pressure relief valve. Allow fluid to warm up if the air temperature is low.

Summary

SECTION 1 SAFETY & GENERAL INFORMATION

1.1 Blade Handling

Safety precautions for handling bandsaw blades, including personal protective equipment.

1.2 Sawmill Setup

Procedures and safety warnings for setting up the sawmill on various terrains for stability.

1.3 Sawmill Operation

Critical safety instructions for operating the sawmill and its components during use.

1.4 Belt Sizes

Specifications and part numbers for various belts used on the sawmill.

1.5 Blade Sizes

Recommended blade types and sizes based on wood type and engine size for performance.

1.6 Cutting Capacity

Log size capacities and production output for different sawmill models.

1.7 Engine;Motor Specifications

Details on available engine and motor options for the sawmills.

1.8 Overall Dimensions

Physical dimensions and weight specifications for LT30HD and LT40HD models.

1.9 Components

Identification of major sawmill components with a visual diagram for reference.

1.10 Hydraulic Schematic

Diagrams illustrating the hydraulic system for different revisions of the sawmill.

1.11 Hydraulic Components

Detailed list of hydraulic components, including part numbers and descriptions.

1.12 Hydraulic Hoses

Specifications for hydraulic hoses, including component codes and lengths.

SECTION 2 SETUP & OPERATION

2.1 Stationary Sawmill Setup

Steps for setting up a stationary sawmill on firm footing for stability.

2.2 Portable Sawmill Setup

Procedures for setting up a portable sawmill, including outrigger adjustment.

2.3 Preparing The Sawmill For Operation

Initial steps to prepare the sawmill for operation, specific to TUV trailers.

2.4 Replacing The Blade

Step-by-step guide on how to safely replace the bandsaw blade.

2.5 Tensioning The Blade

Instructions for correctly tensioning the blade using the tension gauge.

2.6 Tracking The Blade

Method for aligning the blade on the wheels for optimal cutting performance.

2.7 Starting The Engine (or Motor)

Safety precautions and steps for starting the sawmill's engine or motor.

2.8 Hydraulic Control Operation

Operation of hydraulic controls for loading logs, with revisions noted.

2.9 Loading, Turning, And Clamping Logs

Procedures for loading, turning, and securely clamping logs onto the sawmill bed.

2.10 Clamp Extension

Instructions for using and storing the clamp extension for small logs or cants.

2.11 Up;Down Operation

How to operate the up/down switch for adjusting cutting head height.

2.12 Blade Guide Arm Operation

Adjusting the blade guide arm to clear the log during cutting operations.

2.13 Clutch;Brake Operation

How to engage and disengage the clutch and brake for blade operation.

2.14 Power Feed Operation

Operating the power feed system for carriage movement and speed control.

2.15 Cutting The Log

Step-by-step guide for performing standard cuts on a log.

2.16 Edging

Procedures for edging boards to create clean, square sides.

2.17 Blade Height Sight Gauge

Using the sight gauge to determine precise blade height for cuts.

2.18 Blade Height Scale

Understanding and using the blade height scales for accurate lumber thickness.

2.19 Water Lube Operation

Instructions for using the water lube system to keep the blade clean.

2.20 Preparing The Sawmill For Towing

Steps to secure the sawmill for safe transport and towing.

SECTION 3 MAINTENANCE

3.1 Wear Life

Estimated life expectancy of common replacement parts for planning maintenance.

3.2 Blade Guides

Maintenance procedures for blade guide rollers, including lubrication and inspection.

3.3 Hydraulic Log Loader

Cleaning around velocity fuse valves on the log loader cylinders.

3.4 Blade Housing

Cleaning sawdust from blade wheel housings and adjusting blade screw.

3.5 Carriage Track, Wiper & Scrapers

Cleaning and lubricating track rails, wipers, and scrapers for smooth operation.

3.6 Track Rollers

Lubrication schedule for greasable track roller bearings.

3.7 Vertical Mast Rails

Cleaning and lubricating vertical mast rails to prevent rust and ensure smooth movement.

3.8 Drum Switches

Lubrication of drum switch contacts for reliable operation.

3.9 Miscellaneous Lubrication

General lubrication points for blade guide arms, mechanisms, and chains.

3.10 Blade Tensioner

Lubrication of tensioner system components, including chrome rods and screw handle.

3.11 Blade Wheel Belts

Instructions for rotating and checking blade wheel belts for wear.

3.12 Brake Strap Adjustment

Procedures for checking and adjusting the brake strap for quick stopping.

3.13 Hydraulic System

Checking hydraulic fluid level, replacing filters, and servicing the drive motor.

3.14 Drive Bearing

Refilling fluid in the drive-side cylinder bearing housing.

3.15 Up;Down System

Greasing gear reducer shaft bearing and adjusting up/down belt and chain.

3.16 Power Feed

Adjusting the power feed belt and chain tension for proper operation.

3.17 Miscellaneous Maintenance

Checking mill alignment, safety decals, and electrical connections.

SECTION 4 TROUBLESHOOTING GUIDE

4.1 Sawing Problems

Troubleshooting common sawing issues like dull blades, breakage, and tracking.

4.2 Electrical Problems

Diagnosing and resolving electrical issues with motors, switches, and battery.

4.3 Power Feed Problems

Troubleshooting issues related to the power feed system's jerky operation or motor overheating.

4.4 Power Feed Circuit Troubleshooting

Using LED lights on the circuit board to diagnose power feed problems.

4.5 Hydraulic Problems

Troubleshooting common hydraulic system issues, including pump response and leaks.

4.6 Engine;Motor and Drive Pulleys Alignment

Steps for aligning engine, motor, and drive pulleys for optimal belt performance.

4.7 Power Feed Variable Speed Switch Test

Procedure to test the variable speed switch for jerky responses.

4.8 Power Feed Preliminary Test

A test to determine if power feed problems are mechanical or electrical.

4.9 Power Feed Mechanical Test

A mechanical inspection of the power feed system components.

4.10 Hydraulic Pressure Test

How to check hydraulic pressure for different sawmill revisions.

SECTION 5 SAWMILL ALIGNMENT

5.1 Pre-Alignment Procedures

Overview of steps required for accurate sawmill alignment.

5.2 Frame Setup

Steps for properly setting up the sawmill frame for alignment.

5.3 Blade Installation And Alignment

Installing a blade and aligning it with the blade wheels.

5.4 Saw Head Slide Pad Adjustment

Adjusting the nylon pads on the saw head for proper vertical mast contact.

5.5 Adjusting The Lower Track Rollers

Adjusting lower track rollers for square cuts and accurate board dimensions.

5.6 Adjusting Main Bed Rails To Blade

Aligning the main bed rails parallel to the blade for precision cuts.

5.7 Blade Guide Arm Vertical Adjustment

Adjusting the vertical position of the blade guide arm for blade support.

5.8 Blade Guide Arm Horizontal Adjustment

Adjusting the horizontal position of the blade guide arm for proper blade clearance.

5.9 Aligning The Blade Guides

Steps for aligning the inner and outer blade guide assemblies.

5.10 Blade Deflection

Adjusting blade guides to achieve proper blade deflection during cuts.

5.11 Blade Guide Vertical Tilt Adjustment

Adjusting the vertical tilt of the blade guide to prevent blade tilting.

5.12 Blade Guide Spacing

Setting the correct spacing for blade guide flanges relative to the blade.

5.13 Horizontal Tilt Adjustment

Adjusting the horizontal tilt of the blade guide rollers.

5.14 Horizontal Adjustment Of Side Supports

Horizontally adjusting side supports to ensure square cuts.

5.15 Vertical Adjustment Of Side Supports

Vertically adjusting side supports to be square to the bed rails.

5.16 Clamp Stop Adjustment

Adjusting the clamp stop to align with the side supports.

5.17 Aligning The Pivot Bed Rails

Adjusting pivot bed rails to be level with main bed rails for cutting long cants.

5.18 Sight Gauge Adjustment

Adjusting the sight gauge to accurately indicate blade position over bed rails.

5.19 Saw Head Tilt

Compensating for saw head drop on wide logs by adjusting track rollers.

5.20 Blade Height Scale Adjustment

Calibrating the blade height scale to accurately reflect blade-to-bed distance.

Wood-mizer 1992 LT40HD Specifications

General

Model	LT40HD
Year	1992
Max Log Diameter	36 inches
Blade Thickness	0.042 inches
Horsepower	20 HP (Kohler) or 25 HP (Kubota)
Blade Length	144 inches
Fuel Capacity	5 gallons