woodmizer LT20 Series User manual

Wood-Mizer® Sawmill
Safety, Setup, Operation
& Maintenance Manual
LT20 Series DH rev. D2.03
Safety is our #1 concern! Read and understand all
safety information and instructions before operating,
setting up or maintaining this machine.
April 2003
Form #629
!

This manual is to replace or to be used with all previous information received on the
Wood-Mizer®* sawmill. All future mailings will be an addition to or a revision of individual
sections of this manual as we obtain new information.
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.
If You Need To Order Parts...
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland
at [phone]. From the continental U.S., call our toll-free Parts hotline at
1-800-448-7881. Please have the vehicle identification number and your customer num-
ber ready when you call. Wood-Mizer will accept these methods of payment:
• Visa, Mastercard, or Select Purchase
•COD
• Prepayment
• Net 15 (with approved credit)
Be aware that shipping and handling charges may apply. Handling charges are based on
size and quantity of order. In most cases, items will ship on the day they are ordered.
Second Day and Next Day shipping are available at additional cost.
If You Need Service...
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland
at [phone]. From the continental U.S., call us toll-free at 1-800-525-8100. Ask to
speak with a Customer Service Representative. Please have your vehicle identification
number and your customer number ready when you call. The Service Representative can
help you with questions about alignment of your mill, blade sharpening, or cutting a partic-
ular species of wood. He also can schedule you for a service call.
Office Hours: All times are Eastern Standard Time. Please remember that Indiana does
not go on Daylight Savings Time in the summer.
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.
*Wood-Mizer®is a registered trademark of Wood-Mizer Products, Inc.
Country Monday - Friday Saturday Sunday
U.S., Indiana 8 a.m. to 5 p.m. 8 a.m. to 4 p.m. Closed
Poland 8 a.m. to 4:30 p.m. 8 a.m. to 1 p.m. Closed

Sawmill and Customer Identification
Each Wood-Mizer sawmill has a 17-digit Vehicle Identification Number (VIN). See the fig-
ure below for VIN locations. See the chart for VIN description.
V.I.N. LOCATIONS.
456 A 4 24 1 X S N A F9 017 F9 .01
V.I.N. DESCRIPTION
Company Identification Number
456=Wood-Mizer Indiana
Weight Class; A=Under 3,000 lbs B=3,001-4,000 lbs
C=4,001-5000 lbs
Product No.; 1=LT15, 2=LT20, 4=LT40 Series,
7=LT70 Series
Length of the Trailer;
20=20 Ft., 24=24’, 35=35’
Number of axles on the trailer
Year of Manufacture;
Y=2001, Z=2002, A=2003, B=2004, C=2005, D=2006
State of Manufacture
N=Indiana, P=Poland
Month of Manufacture
A=January, B=February, C=March, etc...
Revision Level
Sequence Number
Ranging from 000-999
End of 17-Digit VIN
Revision Level (Repeated)
Two-Digit Minor Revision Level
Check Digit
Add all the number and divide by 11

Each sawmill is also identified with a model number which includes the base model and
the engine/motor configuration. See the figure for a description of the model number.
When you pick up your mill, you will receive a customer number. Both the VIN and your
customer number expedite our service to you. Please write these numbers below so you
have quick, easy access to them.
MODEL NUMBER DESCRIPTION.
Customer No. Model No. V.I.N. Revision
LT20
Basic Sawmill I.D.
D22
Configuration
Engine/Motor

Table of Contents Section-Page
Table of Contents 25doc061008 5
SECTION 1 SAFETY & GENERAL INFORMATION 1-1
1.1 Blade Handling.......................................................................................................... 1-2
1.2 Sawmill Setup............................................................................................................ 1-3
1.3 Sawmill Operation..................................................................................................... 1-4
1.4 Sawmill Maintenance ................................................................................................ 1-6
1.5 Belt Sizes ................................................................................................................. 1-12
1.6 Blade Sizes .............................................................................................................. 1-12
1.7 Cutting Capacity...................................................................................................... 1-13
1.8 Engine/Motor Specifications ................................................................................... 1-14
1.9 Overall Dimensions ................................................................................................. 1-15
1.10 Chains ......................................................................................................................1-15
1.11 Sawdust Extractor Specifications ............................................................................ 1-16
1.12 Hydraulic System .................................................................................................... 1-16
1.13 Components............................................................................................................. 1-17
1.14 LT20 Series DH3 Hydraulic Schematic.................................................................. 1-18
1.15 LT20 Series A/DH5 Hydraulic Schematic .............................................................. 1-19
1.16 LT20 Series A/DH7 Hydraulic Schematic .............................................................. 1-20
1.17 LT20 Series A/DH - Hydraulic Components .......................................................... 1-21
1.18 LT20 Series A/DH - Hydraulic Hoses..................................................................... 1-22
SECTION 2 SETUP & OPERATION 2-1
2.1 Stationary Sawmill Setup .......................................................................................... 2-1
2.2 Portable Sawmill Setup ............................................................................................. 2-4
2.3 Middle Track Cover .................................................................................................. 2-8
2.4 Replacing The Blade ................................................................................................. 2-9
2.5 Tensioning The Blade.............................................................................................. 2-10
2.6 Tracking The Blade ................................................................................................. 2-11
2.7 Hydraulic Control Operation................................................................................... 2-13
2.8 Loading, Turning, And Clamping Logs .................................................................. 2-18
2.9 Up/Down Operation ................................................................................................ 2-21
2.10 Blade Guide Arm Operation.................................................................................... 2-22
2.11 Power Feed Operation ............................................................................................. 2-23
2.12 Cutting The Log ...................................................................................................... 2-26
2.13 Edging......................................................................................................................2-27
2.14 Blade Height Scale .................................................................................................. 2-28
2.15 Water Lube Operation ............................................................................................. 2-30
2.16 Preparing The Sawmill For Towing ........................................................................ 2-31

Table of Contents Section-Page
6 25doc061008 Table of Contents
SECTION 3 MAINTENANCE 3-1
3.1 Wear Life................................................................................................................... 3-1
3.2 Blade Guides ............................................................................................................. 3-2
3.3 Sawdust Removal ...................................................................................................... 3-2
3.4 Carriage Track, Wiper & Scrapers ............................................................................ 3-3
3.5 Vertical Mast Rails .................................................................................................... 3-4
3.6 Miscellaneous ............................................................................................................ 3-4
3.7 Blade Tensioner......................................................................................................... 3-5
3.8 Blade Wheel Belts ..................................................................................................... 3-5
3.9 Brake Pads Adjustment ( Gas / Diesel Sawmills Only ) ........................................... 3-6
3.10 Drive Belt Adjustment .............................................................................................. 3-7
3.11 Hydraulic System ...................................................................................................... 3-9
3.12 Up/Down System..................................................................................................... 3-10
3.13 Power Feed System ................................................................................................. 3-12
SECTION 4 TROUBLESHOOTING GUIDE 4-1
4.1 Sawing Problems ....................................................................................................... 4-1
4.2 Electrical Problems.................................................................................................... 4-3
4.3 Power Feed Problems ................................................................................................ 4-5
4.4 Hydraulic Problems ................................................................................................... 4-7
4.5 Engine/Motor and Drive Pulleys Alignment........................................................... 4-11
4.6 Hydraulic Pressure Test........................................................................................... 4-12
SECTION 5 SAWMILL ALIGNMENT 5-1
5.1 Pre-Alignment Procedures......................................................................................... 5-1
5.2 Frame Setup............................................................................................................... 5-2
5.3 Blade Installation And Alignment............................................................................. 5-2
5.4 Blade Wheel Alignment ............................................................................................ 5-6
5.5 Adjusting The Lower Track Rollers........................................................................ 5-11
5.6 Adjusting Bed Rails To The Blade.......................................................................... 5-14
5.7 Blade Guide Arm Vertical Adjustment ................................................................... 5-16
5.8 Blade Guide Arm Feed Chain Adjustment.............................................................. 5-18
5.9 Saw Head Backlash Removal.................................................................................. 5-20
5.10 Blade Guide Arm Horizontal Adjustment............................................................... 5-22
5.11 Aligning the Blade Guides ...................................................................................... 5-24
5.12 Blade Deflection...................................................................................................... 5-25
5.13 Blade Guide Vertical Tilt Adjustment..................................................................... 5-26
5.14 Blade Guide Spacing ............................................................................................... 5-28
5.15 Horizontal Tilt Adjustment...................................................................................... 5-29
5.16 Horizontal Adjustment of Side Supports ............................................................ 5-30
5.17 Vertical Adjustment of Side Supports................................................................. 5-31
5.18 Saw Head Tilt .......................................................................................................... 5-32
5.19 Blade Height Scale Adjustment............................................................................... 5-34

Safety & General Information
Safety & General Information 25doc061008 1-1
1
SECTION 1 SAFETY & GENERAL INFORMATION
This symbol calls your attention to instructions concerning your personal safety. Be sure
to observe and follow these instructions. This symbol accompanies a signal word. The
word 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 to
persons or equipment. Read all safety instructions before operating this equipment and
observe all safety warnings!
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.
Read and observe all safety instructions before operating this equipment! Also read any
additional manufacturer’s manuals and observe any applicable safety instructions
including dangers, warnings, and cautions.
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! 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.
Always properly dispose of all sawing by-products, including sawdust and other debris,
coolant, oil, fuel, oil filters and fuel filters.
Safety instructions are listed in this section by the following operations:
Blade Handling
Sawmill Setup
Sawmill Operation
Sawmill Maintenance

Safety & General Information
Blade Handling
1
1-2 25doc061008 Safety & General Information
1.1 Blade Handling
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. 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! Do not spin the blade wheels by hand.
Spinning the blade wheels by hand may result in serious
injury.

Safety & General Information
Sawmill Setup
Safety & General Information 25doc061008 1-3
1
1.2 Sawmill Setup
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! Failure to put front outrigger down before
moving cutting head from the rest position may result in
serious injury.
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.
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! Do not set up the mill on ground with more than
a 10 degree incline. If setup on an incline is necessary, put
blocks under one side of the mill or dig out areas for
outrigger legs to keep mill level. Setting up the mill on an
incline could cause it to tip over, resulting in serious
personal injury.
CAUTION! Changes in temperature could cause increased
pressure in the blade tensioner and loss of fluid from the
gauge. Release the blade tension when the mill is not in
use to avoid damage to the tensioner.

Safety & General Information
Sawmill Operation
1
1-4 25doc061008 Safety & General Information
1.3 Sawmill 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. Use the safety retainer pin and cable to fasten
blade housing covers.
DANGER! Always keep hands away from moving bandsaw
blade. Failure to do so will result in serious injury.
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! 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.
DANGER! Always be sure the blade is disengaged and 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.
DANGER! Keep all persons out of the path of returning
boards. Failure to do so will result in serious injury.
WARNING! Always disengage the clutch/brake mechanism
whenever the sawmill is not cutting. Failure to do so may
result in serious injury.
WARNING! Always wear eye, ear, respiration, and foot
protection when operating the sawmill. Failure to do so may
result in serious injury.
WARNING! Secure all loose clothing and jewelry before
operating the sawmill. Failure to do so may result in serious
injury or death.

Safety & General Information
Sawmill Operation
Safety & General Information 25doc061008 1-5
1
WARNING! Always make sure log is clamped securely
before sawing. Failure to do so may result in serious injury
or death.
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.
CAUTION! Be sure the pivot rails, turning arm, clamp, and
toe boards are below bed level before loading a log onto
the bed. Failure to do so may result in machine damage or
cause misalignment.
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.
CAUTION! Do not try to force the saw head beyond its
upper and lower travel limits. Damage to the up/down
system may result.
CAUTION! Do not use the blade guide arm knob to move
the carriage head forward and backward. Damage to the
blade guide arm may result.
CAUTION! Be sure to stop the blade when returning the
carriage. This will not only prevent the blade from being
pulled off and ruined by a wood sliver, but also will increase
the life of the blade.

Safety & General Information
Sawmill Maintenance
1
1-6 25doc061008 Safety & General Information
1.4 Sawmill Maintenance
WARNING! Always secure the cutting head with a chain or
a brace before adjusting the up/down chain. The cutting
head may fall, causing severe injury or death.
WARNING! Always secure the cutting head with a chain or
a brace before adjusting the mast pads. The cutting head
may fall, causing severe injury or death.
CAUTION! Reinstall the track wiper so that it lightly touches
the track rail. If the wiper presses too firmly against the rail,
it can cause the power feed to bind.
CAUTION! Never use grease on the mast rails as it will
collect sawdust.
CAUTION! Do not use chain lube. It causes sawdust
buildup in chain links.
CAUTION! Due to variations in the vertical mast, the pad
spacing may vary throughout the travel of the saw head.
Check the pad spacing at the top and bottom ends of the
mast only. Pads adjusted too tight will cause premature
up/down motor failure.
CAUTION! It is important that the lower stop bolts are
properly adjusted to secure the carriage on the track rail.
Failure to properly adjust the stop bolts can cause saw
head damage, especially during mill transportation.

Safety & General Information
Sawmill Maintenance
Safety & General Information 25doc061008 1-7
1
See Table 1-1. Pictogram decals used to warn and inform the user about danger in the
LT20.
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.
099219 Blade tension. Turning the bolt clockwise
will increase the blade tension and turning
the bolt counterclockwise will decrease the
tension.
099220
099219
+

Safety & General Information
Sawmill Maintenance
1
1-8 25doc061008 Safety & General Information
099221 CAUTION! Keep all persons a safe
distance away from work area when
operating the machine.
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.
TABLE 1-1
099221
098176

Safety & General Information
Sawmill Maintenance
Safety & General Information 25doc061008 1-9
1
096319 CAUTION! Disconnect power supply
before opening the box.
099222 CAUTION! Sawdust outlet. Protect eyes!
099542 CAUTION! Trailer.
086099 CAUTION! Hot elements, keep your
distance!
TABLE 1-1
099542
086099

Safety & General Information
Sawmill Maintenance
1
1-10 25doc061008 Safety & General Information
096321 Blade movement direction
S12004G CAUTION! Always wear safety goggles
when operating the sawmill!
S12005G CAUTION! Always wear protective ear
muffs when operating the sawmill!
P11789 Aligning the blade on the wheels
TABLE 1-1

Safety & General Information
Sawmill Maintenance
Safety & General Information 25doc061008 1-11
1
092597 Setting the blade tension indicator
P85070 CE safety certification
099401 Russian safety certification
S20097 Motor rotation direction
TABLE 1-1
092597
099401
S20097

Safety & General Information
Belt Sizes
1
1-12 25doc061008 Safety & General Information
1.5 Belt Sizes
See Table 1-2. Belt sizes for the LT20 Series sawmill are shown.
1.6 Blade Sizes
See Table 1-3. Wood-Mizer TRU•SHARP™ offers three types of blades to provide
efficient sawing for all models of sawmills. The engine/motor size of your sawmill and the
type of wood you saw should determine which blade you choose for optimum
performance.
See The Blade Handbook for blade hook angle, tooth height, and tooth set
specifications.
Description Belt Size Wood-Mizer
Part #
Motor Drive Belt E11 & E15 1
1 E11 motor uses one, but E15 motor uses two BX81 belts.
BX81 014819
Engine Drive Belt D22, G25 BX83,5 088110
Blade Pulley Belts B57 2
2 To insure proper blade tracking, use Goodyear, Dayco Super II, or
Browning belts only.
P04185
TABLE 1-2
Engine/Motor
Size
Recommended Blade Type
Softwood Medium
Hardwood
Frozen Timber or
Dense Hardwood
5 HP - 15 HP B275IH1030
B275IH741030
B375IH929 B375IH9291
16 HP or more B376IH1030
B376IH741030
B275IH1030
B275IH741030
B376IH1030
B376IH7410302
B375IH929 1
1 TRU•SHARP™”F” 9° blades use a 9/29 profile (9° hook angle and 29° back angle) and are designed to cut frozen
and/or extremely dense, hard-to-cut wood. Standard TRU•SHARP™ blades use a 10/30 profile.
Electric Motor B376IH1030
B376IH741030
B275IH1030
B275IH741030
B376IH1030
B376IH741030 2
2 Customer may choose preferred blade.
B375IH929 1