woodmizer LT70L DH WIDE User manual

Wood-Mizer®
Safety, Setup, Operation
& Maintenance Manual
LT70L DH rev. B7.00
LT70L DH WIDE rev. B7.00
Safety is our #1 concern! Read and understand
all safety information and instructions before
operating, setting up or maintaining this machine.
Form #1041
!
This is the original language
for the manual.

4 SW-07doc102619 Table of Contents
Table of Contents Section-Page
SECTION 1 SAFETY 1-1
1.1 Safety Symbols.......................................................................................1-1
1.2 Safety Instructions..................................................................................1-2
1.3 Belt Sizes..............................................................................................1-16
1.4 Blade Sizes ...........................................................................................1-16
SECTION 2 SERVICING THE SAWMILL 2-1
2.1 Customer and Sawmill Identification.....................................................2-1
SECTION 3 SAWMILL SETUP 3-1
3.1 Sawmill Setup.........................................................................................3-1
3.2 Stationary Sawmill Setup .......................................................................3-3
Sawmills with Cable Guide
3.3 Portable Sawmill Setup ..........................................................................3-8
3.4 Middle Track Cover .............................................................................3-11
3.5 Replacing The Blade ............................................................................3-12
3.6 Tensioning The Blade...........................................................................3-13
3.7 Tracking The Blade ..............................................................................3-15
3.8 Starting The Engine (or Motor)............................................................3-17
SECTION 4 SAWMILL OPERATION 4-1
4.1 Hydraulic Control Operation..................................................................4-1
4.2 Loading, Turning And Clamping Logs ..................................................4-5
4.3 Up/Down Operation ...............................................................................4-7
4.4 Blade Guide Arm Operation...................................................................4-8
4.5 Power Feed Operation ............................................................................4-9
4.6 Cutting The Log ...................................................................................4-11
4.7 Edging...................................................................................................4-12
4.8 Optional Cutting Procedure..................................................................4-13
4.9 Blade Height Scale ...............................................................................4-13
4.10 Water Lube Operation ..........................................................................4-15
4.11 LT70 WIDE Lube System Operation...................................................4-16
4.12 Preparing The Sawmill For Towing.....................................................4-17
SECTION 5 MAINTENANCE 5-1
5.1 Wear Life................................................................................................5-1
5.2 Blade Guides ..........................................................................................5-2
Steel Guide Blocks
Throat Screw
5.3 Sawdust Removal ...................................................................................5-4
5.4 Carriage Track, Wiper & Scrapers .........................................................5-4
5.5 Vertical Mast Rails.................................................................................5-6

Table of Contents Section-Page
Table of Contents SW-07doc1026195
5.6 Drum Switches .......................................................................................5-6
5.7 Miscellaneous .........................................................................................5-7
5.8 Brake Adjustment...................................................................................5-8
5.9 Drive Belt Adjustment............................................................................5-9
5.10 Up/Down System..................................................................................5-10
5.11 Charging The Battery (DC Only) .........................................................5-12
5.12 Hydraulic System .................................................................................5-13
5.13 Power Feed ...........................................................................................5-15
SECTION 6 TROUBLESHOOTING GUIDE 6-1
6.1 Sawing Problems....................................................................................6-1
6.2 Electrical Problems.................................................................................6-3
6.3 Power Feed Problems.............................................................................6-5
6.4 Power Feed Circuit Troubleshooting......................................................6-7
6.5 Hydraulic Problems ..............................................................................6-10
6.6 Engine/Motor and Drive Pulleys Alignment........................................6-15
6.7 Power Feed Variable Feed Rate Switch Test .......................................6-15
6.8 Power Feed Preliminary Test ...............................................................6-15
6.9 Power Feed Mechanical Test................................................................6-15
6.10 Fuse Terminal Extension Stud..............................................................6-17
6.11 Circuit Breaker Operation ....................................................................6-19
SECTION 7 SAWMILL ALIGNMENT 7-1
7.1 Routine Alignment Procedure ................................................................7-1
Blade Installation
Saw Head Tilt
Blade Guide Arm Alignment
Blade Guides
Blade Guide Vertical Tilt Alignment
Blade Guide Horizontal Tilt Adjustment
Blade Guide Flange Spacing
7.2 Horizontal Adjustment of Side Supports..............................................7-13

6 SW-07doc102619 Table of Contents
Table of Contents Section-Page
7.3 Vertical Adjustment of Side Supports..................................................7-14
Blade Height Scale Adjustment
7.4 Complete Alignment Procedure ...........................................................7-16
Frame Setup
Blade Installation
Blade Wheel Alignment
Bed Rail Adjustment
Blade Guide Installation
Blade Guide Arm Alignment
Blade Guide Deflection
Blade Guide Vertical Tilt Alignment
Blade Guide Horizontal Tilt Adjustment
Blade Guide Flange Spacing
Blade Guide Level
Blade Disk Adjustment
Horizontal Alignment of Side Supports
Vertical Side Support Alignment
Clamp Stop/Stop Bolt Adjustment
Saw Head Tilt
Blade Height Scale Adjustment
SECTION 8 SPECIFICATIONS 8-1
8.1 Log Capacity ..........................................................................................8-1
8.2 Overall Dimensions ................................................................................8-1
8.3 Engine/Motor Specifications ..................................................................8-5
8.4 Chains .....................................................................................................8-6
8.5 Lube System Specifications ...................................................................8-6
8.6 Hydraulic System ...................................................................................8-6
8.7 Belt Sizes................................................................................................8-7
8.8 Hydraulic Blade Tensioner Schematic ...................................................8-7
8.9 Hydraulic Blade Tensioner ComponentsSawdust Extractor Specifications8-8
SECTION 9 HYDRAULIC INFORMATION 9-1
9.1 LT 40/70L DH Hydraulic Schematic .....................................................9-1
9.2 LT 40/70L DH Hydraulic Hoses ...........................................................9-2

Safety
Safety Symbols
Safety 60HDdoc102619 1-1
1
SECTION 1 SAFETY
1.1 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.
CAUTION! refers to potentially hazardous situations which, if not
avoided, may result in minor or moderate injury or damage to
equipment.
IMPORTANT! indicates vital information.
NOTE: gives helpful information.
Warning stripes are placed on areas where a single decal would be
insufficient. To avoid serious injury, keep out of the path of any
equipment marked with warning stripes.
!

Safety
Safety Instructions
1
1-2 60HDdoc102619 Safety
1.2 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.
IMPORTANT! The sawmill is intended for sawing wood only. See
Section 8.1 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.
OBSERVE SAFETY INSTRUCTIONS
IMPORTANT! Read the entire Operator's Manual before operating
the sawmill. Take notice of all safety warnings throughout this manual and
those posted on the machine. Keep this manual with this machine at all times,
regardless of ownership.
Also read any additional manufacturer’s manuals and observe any applicable
safety instructions including dangers, warnings, and cautions.
Only persons who have read and understood the entire operator's manual
should operate the sawmill. The sawmill is not intended for use by or around
children.
IMPORTANT! 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.
!
!

Safety
Safety Instructions
Safety 60HDdoc102619 1-3
1
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 person! Keep all other
persons away from area when coiling, carrying or changing a blade. Failure to
do so may result in serious injury.
WARNING! Always wear eye, ear, respiration, safety clothing, and foot
protection when operating or servicing the sawmill.
KEEP SAWMILL AND AREA AROUND SAWMILL CLEAN
DANGER! Maintain a clean and clear path for all necessary movement around
the mill and lumber stacking areas. Failure to do so will result in serious injury.
HANDLE FUEL/LUBRICANTS SAFELY
DANGER! Due to the flammable nature of fuel and oil, never smoke, weld,
grind or allow sparks near your engine or storage tanks, especially during
times of fueling.
DANGER! Never allow fuel to spill on a hot engine during fueling operations or
otherwise. The hot temperature of your engine could induce a fire or
explosion.
WARNING! Store gasoline away from sawdust and other flammable materials.
Failure to do so may result in serious injury.

Safety
Safety Instructions
1
1-4 60HDdoc102619 Safety
WARNING! Use ONLY water with the water lube accessory. Never use
flammable fuels or liquids. If these types of liquids are necessary to clean the
blade, remove it and clean with a rag. Failure to do so may result in serious
injury or death.
WARNING! Drum switch grease contains Petroleum Hydrocarbon Lubricant.
Eye and skin irritant. If introduced into eyes, flush with water for at least
15 minutes. If film or irritation persists, seek medical attention. Wash skin with
soap and water. If ingested, do not induce vomiting - contact a physician.
KEEP OUT OF THE REACH OF CHILDREN.
CAUTION! The sawmill’s work-stand should be equipped with a 4 kg or bigger
dry powder extinguisher.
DISPOSE OF SAWING BY-PRODUCTS PROPERLY
IMPORTANT! Always properly dispose of all sawing by-products, including
sawdust and other debris, coolant, oil, fuel, oil filters and fuel filters.
USE CAUTION WHEN WORKING WITH BATTERIES (GAS & DIESEL SAWMILLS ONLY)
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.1
WARNING! Battery posts, terminals and related accessories contain lead and
lead compounds, chemicals known to the State of California to cause cancer
and reproductive harm. Wash hands after handling.
WARNING! Charge the battery in a well ventilated area. Do not attempt to
charge a frozen battery.
1Battery Council International, copyright 1987
!

Safety
Safety Instructions
Safety 60HDdoc102619 1-5
1
Use extreme care to avoid spilling or splashing electrolyte (which is dilute
sulfuric acid) as it can destroy clothing and burn the skin. If electrolyte is
spilled or splashed on clothing or the body, it should be neutralized
immediately and then rinsed with clean water. A solution of baking soda,
or household ammonia, and water may be used as a neutralizer.
Electrolyte splashed into the eyes is extremely dangerous. If this should
happen, force the eye open and flood it with cool, clean water for
approximately fifteen minutes. A doctor should be called immediately when
the accident occurs and “on-the-spot” medical attention given if possible.
If a doctor cannot come to the scene of the accident immediately, follow his
instructions concerning actions to take. Do not add eye drops or other
medication unless advised to do so by the doctor. Do not place a battery
or acid within the reach of children. If acid (electrolyte) is taken internally drink
large quantities of water or milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
If electrolyte is spilled or splashed on any surface of the machine, it should be
neutralized and rinsed with clean water.
CAUTION! Do not overcharge the battery. Overcharging may reduce the
overall service life of 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.
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. Setting up the mill
on an incline could cause it to tip over, resulting in serious personal injury.
WARNING! Chock the trailer wheels to prevent movement before unhitching it
from the towing vehicle. Failure to do so may result in serious injury or death.
WARNING! Put front outrigger down before moving saw head from the rest
position. Failure to do so may result in serious injury.
WARNING! Always make sure the trailer is supporting the sawmill frame when
operating a sawmill with adjustable outriggers. Failure to do so may result in
serious injury or death. The adjustable outriggers are intended to support the
saw frame with assistance from the trailer.
WARNING! Securely fasten the feet of a stationary sawmill to the floor before
operating the sawmill. Failure to do so may result in serious injury or death.

Safety
Safety Instructions
1
1-6 60HDdoc102619 Safety
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 closed (i.e. the safety
switches located on them are engaged).
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. Failure to do so will result
in serious injury.
DANGER! Always be sure that all persons are out of the path of the blade
before starting the engine or motor. Failure to do so will result in serious injury.
KEEP HANDS AWAY
DANGER! Always 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 operation.
Avoid contact with any part of a hot engine. The exhaust components of your
engine are especially hot during and following operation. Contact with hot
engine components can cause serious burns. Therefore, never touch or
perform service functions on a hot engine. Allow the engine to cool sufficiently
before beginning any service function.

Safety
Safety Instructions
Safety 60HDdoc102619 1-7
1
DANGER! Always keep hands away from moving bandsaw blade. Failure to
do so will result in serious injury.
DANGER! Always be aware of and take proper protective measures against
rotating shafts, pulleys, fans, etc. Always stay a safe distance from rotating
members and make sure that loose clothing or long hair does not engage
rotating members resulting in possible injury.
WARNING! Do not for any reason adjust the engine drive belts or belt support
bracket with the engine running. Doing so may result in serious injury.
CAUTIONS FOR GAS OR DIESEL ENGINE OPERATION
DANGER! Operate your engine/machine only in well ventilated 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.
WARNING! Do not operate engine without proper and operational
spark arrester/muffler. Sparks emitted from the engine exhaust could
ignite surrounding materials, causing serious injury or death.
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! 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 mill operation.

Safety
Safety Instructions
1
1-8 60HDdoc102619 Safety
WARNING! Consider all electrical circuits energized and dangerous.
WARNING! Never assume or take the word of another person that the power
is off; check it out and lock it out.
WARNING! Do not wear rings, watches, or other jewelry while working around
an open electrical circuit.
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.
WARNING! Remove the blade before performing any service to the engine or
sawmill. Failure to do so may result in serious injury.
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.
IMPORTANT! If replacing a component which has a safety decal affixed to it,
make sure the new component also has the safety decal affixed.
!
!

Safety
Safety Instructions
Safety 60HDdoc102619 1-9
1
USE CAUTION WHEN WORKING WITH HEAVY LOGS
WARNING! Always make sure log is clamped securely before sawing. Failure
to do so may result in serious injury or death.
AUTOMATIC BOARD RETURN SAFETY
DANGER! Keep all persons out of the path of returning boards. Failure to do
so will result in serious injury.
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.
WARNING! Never use the board return table as a platform to stand on.
This table is designed and intended to assist in the removal of boards only.
Standing on the table may result in serious injury.
POWER FEED SYSTEM SAFETY
DANGER! If leaving the blade engaged for maximum production rates, make
sure the off-bearer stays out of the path of the blade. Failure to do so will result
in serious injury or death.
WARNING! Be sure the power feed switch is in the neutral position before
turning the key switch to the #1, #2 or #3 position. This prevents accidental
carriage movement which may cause serious injury or death.
GENERAL TRAILER SAFETY
DANGER! Be sure that the hitch and the safety cable are secured before
towing the sawmill. The safety cable automatically operates the trailer
handbrake lever in case the hitch should become disengaged. Failure to do so
may result in serious personal injury and/or severe machine damage.
DANGER! Make sure all light connections have been made and are working
properly before towing the sawmill. Failure to do so may result in serious
personal injury and/or severe machine damage.
CAUTION! The saw head will hit the spring-loaded ramp stops when adjusted
for low cuts. Remove the loading ramps before sawing to prevent damage to
the saw head and/or blade guide arm.

Safety
Safety Instructions
1
1-10 60HDdoc102619 Safety
CAUTION! Never clean the blade or the blade wheels with a brush
or a scraper during sawmill operation.
CAUTION! Before installation of the blade, inspect it for damage and
cracks. Use only properly sharpened blades. Always handle the blade
with extreme caution. Use suitable carrier equipment for transporting
the blades.
CAUTION! Always wear gloves when handling the blade. Never grab
the blade with bare hands!
CAUTION! If the blade breaks during sawmill operation, push the
EMERGENCY STOP button to stop the blade motor and wait
10 seconds before you open the blade housing cover.
CAUTION! The sawmill’s work-stand should be equipped with a 4 kg
or bigger dry powder extinguisher.

Safety
Safety Instructions
Safety 60HDdoc102619 1-11
1
See Table 1-1. Pictogram decals used to warn and inform the user about danger in the LT70.
TABLE 1-1
Decal View W-M No. Description
096317 CAUTION! Read thoroughly the manual
before operating the machine. Observe all
safety instructions and rules when
operating the sawmill.
099220 CAUTION! Close all guards and covers
before starting the machine.
099221 CAUTION! Keep all persons a safe
distance away from work area when
operating the machine.
099220
099221

Safety
Safety Instructions
1
1-12 60HDdoc102619 Safety
098176 CAUTION! Keep away from debarker
blade!
096316 CAUTION! Do not open or close the
electric box when the switch is not in the
“0” position.
096319 CAUTION! Disconnect power supply
before opening the box.
085977B Do not lift the machine grasping by the
element!
TABLE 1-1
098176
085977B

Safety
Safety Instructions
Safety 60HDdoc102619 1-13
1
086099 CAUTION! Keep away - hot parts!
099222 CAUTION! Sawdust outlet. Protect eyes!
099542 CAUTION! Trailer.
096321 Blade movement direction
505189 Tensioner ball valve lever
TABLE 1-1
086099
099542
505189
0
1

Safety
Safety Instructions
1
1-14 60HDdoc102619 Safety
512240 Clean the chain from sawdust every
50 hours of operation or once a week.
512158 Lubricate the chain every 50 hours of
operation or once a week.
S12004G CAUTION! Always wear safety goggles
when operating the sawmill!
S12005G CAUTION! Always wear protective ear
muffs when operating the sawmill!
TABLE 1-1
512240
50h
512158
OIL
50h