woodmizer LT35 User manual

Debarker Option
Safety, Installation, Operation,
Maintenance & Parts Manual
LT35/LT35HD rev. A.00 - A.11
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
April 2014
Form #2048

©2019
Printed in the United States of America, all rights reserved. No part of this man-
ual may be reproduced in any form by any photographic, electronic, mechanical
or other means or used in any information storage and retrieval system without
written permission from
Wood-Mizer
8180 West 10th Street
Indianapolis, Indiana 46214
California
Proposition 65 Warning
WARNING: Breathing gas/diesel engine exhaust exposes you to chemicals known to
the State of California to cause cancer and birth defects or other reproductive harm.
xAlways start and operate the engine in a well-ventilated area.
xIf in an enclosed area, vent the exhaust to the outside.
xDo not modify or tamper with the exhaust system.
xDo not idle the engine except as necessary.
For more information go to www.P65warnings.ca.gov.
WARNING: Drilling, sawing, sanding or machining wood products can expose you to
wood dust, a substance known to the State of California to cause cancer. Avoid inhaling
wood dust or use a dust mask or other safeguards for personal protection.
For more information go to www.P65Warnings.ca.gov/wood.

Table of Contents Section-Page
Table of Contents WMdoc032619 iii
SECTION 1 SAFETY 1-1
1.1 Installation and Maintenance..................................................................1-1
1.2 Operation and Towing............................................................................1-2
SECTION 2 DEBARKER INSTALLATION 2-1
2.1 Debarker Installation ..............................................................................2-1
2.2 Harness Installation ................................................................................2-4
2.3 Control Component Installation .............................................................2-8
SECTION 3 ALIGNMENT 3-1
SECTION 4 OPERATION AND MAINTENANCE 4-1
4.1 Locking Pin Operation ...........................................................................4-1
4.2 Control Overview ...................................................................................4-2
4.3 Operation ................................................................................................4-4
4.4 Maintenance ...........................................................................................4-6
4.5 Troubleshooting......................................................................................4-7
SECTION 5 ELECTRICAL INFORMATION 5-1
5.1 Wiring Diagrams, D24 (LT35 Rev. A6.08+/LT35HD Rev. A6.10+)....5-1
5.2 Component List, D24 (LT35 Rev. A6.08+/LT35HD Rev. A6.10+)......5-3
5.3 Wiring Diagrams, G25 & D17 (Rev. A6.00+) .......................................5-4
5.4 Component List, G25 & D17 (Rev. A6.00+) .........................................5-6
5.5 Wiring Diagrams, G25 & D17 (Rev. A4.00 - A5.00) ............................5-7
5.6 Wiring Diagrams, G25 & D17 (Rev. A4.00 - A5.00) ............................5-8
5.7 Component List, G25 & D17 (Rev. A4.00 - A5.00) ............................5-10
SECTION 6 DEBARKER PARTS 6-1
6.1 Debarker Assembly ................................................................................6-1
6.2 Pivot Arm Assembly ..............................................................................6-2
6.3 Blade Motor Assembly...........................................................................6-5
Rev. A.07+ .........................................................................6-5
6.4 Blade Motor Assembly...........................................................................6-7
Rev. A.04 - A.06 ....................................................................6-7
6.5 Debarker Solenoid Assembly.................................................................6-9
6.6 Debarker Control Assembly.................................................................6-10
INDEX I

Safety
Installation and Maintenance
1
1-1 35DBdoc032619 Safety
SECTION 1 SAFETY
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 per-
sons or equipment. Read all safety instructions before operating this equipment and
observe all safety warnings!
1.1 Installation and Maintenance
DANGER! Make sure all electrical installation, service
and/or maintenance work is performed by a qualified elec-
trician and is in accordance with applicable electrical codes.
Failure to do so will result in serious injury or death.
DANGER! Before performing any service to this equip-
ment, turn the power toggle switch to the OFF position and
disconnect the sawmill battery ground terminal. Failure to
do so will result in serious injury or death.
WARNING! Before replacing the debarker blade, move the
sawmill blade guide arm in front of the sawmill blade to
cover the blade teeth. Failure to do so may result in serious
injury or death.

Safety
Operation and Towing
Safety 35DBdoc032619 1-2
1
1.2 Operation and Towing
DANGER! Make sure all guards and covers are in place
and secured before operating the debarker option. Failure
to do so may result in serious injury.
DANGER! Keep all persons out of the path of moving
equipment when operating the debarker. Failure to do so
will result in serious injury.
WARNING! Debarker is ON when warning light is ON (or
bell sounds prior to Rev. A.07). DO NOT disconnect the
warning light (or bell). Doing so may result in serious injury.

Debarker Installation
Debarker Installation
2
2-1 35DBdoc032619 Debarker Installation
SECTION 2 DEBARKER INSTALLATION
IMPORTANT! The debarker option may be installed only to LT35 and LT35HD sawmills
Rev. A4.00 and newer equipped with the new up/down system.
DANGER! Before performing any service to this equip-
ment, turn the power toggle switch to the OFF position and
disconnect the sawmill battery ground terminal. Failure to
do so will result in serious injury or death.
CAUTION! Due to various design changes and past retro-
fits and options, you should very carefully look your mill
over to determine Debarker compatibility before beginning
Debarker installation.
2.1 Debarker Installation
DANGER! Always disengage the blade and shut off the
sawmill engine before installing the debarker. Failure to do
so will result in serious injury.
IMPORTANT! Sawmills are equipped with pre-drilled
Debarker mounting holes. Verify hole locations before
beginning Debarker installation. Proper hole location is
imperative for safe and effective Debarker operation.

Debarker Installation
Debarker Installation
Debarker Installation 35DBdoc032619 2-2
2
1. Assemble the debarker assembly to the sawmill saw head. Align the debarker mounting
plate holes and the mounting holes in the saw head. Use the provided mount spacer plate
and fasteners to secure in place as shown below. Make sure the debarker is square to the
saw head before tightening.
See Figure 2-1.
FIG. 2-1
3H1148-4D
Debarker
Assembly
3/8-16 x 3 ½”
Hex Head Bolts (2)
3/8”-16
Nylon Lock Nuts (2)
3/8” Flat Washers (2)
3/8” Flat Washer
3/8” Flat Washers (2)
Mount Spacer Plate (1)
3/8-16 x 1/2” Hex Head Bolt
3/8” Split Lock Washer

Debarker Installation
Debarker Installation
2
2-3 35DBdoc032619 Debarker Installation
2. Install the solenoid/breaker box to the saw head frame. Use the two provided 1/4-20 x
3/4" hex head bolts, 1/4" split lock washers and 1/4" flat washers to secure the sole-
noid/breaker box to the water bottle mount bracket.
See Figure 2-2.
FIG. 2-2
3H1117-7
1/4-20 x 3/4" Hex
Head Bolts (2)
1/4" Split Lock
Washers (2)
1/4" Flat Washers (2)
Solenoid/Breaker Box

Debarker Installation
Harness Installation
Debarker Installation 35DBdoc032619 2-4
2
2.2 Harness Installation
DANGER! Before performing any service to this equip-
ment, turn the power toggle switch to the OFF position and
disconnect the sawmill battery ground terminal. Failure to
do so will result in serious injury or death.
IMPORTANT! Avoid pinch and pivot points, unnecessary
wire bending and open spaces where the wire could get
caught by a log, etc. If you have any questions, call
Wood-Mizer customer service.
1. Route the debarker motor harness through the saw head frame hole. Continue routing
the debarker motor harness inside the debarker frame towards the debarker blade guide
arm motor and blade motor as shown below.
See Figure 2-3.
FIG. 2-3 REV. A.07+
Debarker
Motor
& Light
Harnesses
3H1148-10B
Blade Guide Arm
Motor Wires
Install Boots Over
Motor & Light Wires
And Connect To Debarker
Blade Motor (Red/+,
Black/-).
+

Debarker Installation
Harness Installation
2
2-5 35DBdoc032619 Debarker Installation
2. Connect the blade guide arm motor wires to the blade guide arm motor.
3. Remove the top motor cover from the blade motor and remove the top nuts from each of
the blade motor terminals.
4. Route the black motor and light wires (or bell wires prior to Rev. A.07) through one of the
provided rubber boots. Prior to Rev. A.07: Strip the end of the black warning bell wire
and install a 1/4” 14-16 gauge ring terminal. To install the 14-16 gauge ring terminal, fold
the stripped end of the wire over the insulation, install the ring terminal and crimp in place.
5. Connect the black motor and light wires (or bell wires prior to Rev. A.07) to the negative
(-) motor terminal. Replace the terminal nut to secure the wires.
IMPORTANT! Make sure that the ring terminals do not
touch the motor body.
6. Route the red motor and light wires (or bell wires prior to Rev. A.07) through one of the
provided rubber boots. Prior to Rev. A.07: Strip the end of the red warning bell wire and
install a 1/4” 14-16 gauge ring terminal. To install the 14-16 gauge ring terminal, fold the
stripped end of the wire over the insulation, install the ring terminal and crimp in place.
FIG. 2-3 PRIOR TO REV. A.07
Debarker
Motor
Harness
3H1148-8C
Warning Bell
Wires
Blade Guide Arm
Motor Wires
Install Ring Terminals
To Warning Bell Wires.
Install Boots Over Bell
And Motor Wires And
Connect To Debarker
Blade Motor (Red/+,
Black/-).
+

Debarker Installation
Harness Installation
Debarker Installation 35DBdoc032619 2-6
2
7. Connect the red motor and light wires (or bell wires prior to Rev. A.07) to the positive (+)
motor terminal. Replace the terminal nut to secure the wires.
IMPORTANT! Make sure that the ring terminals do not
touch the motor body.
8. Slide the rubber boots over the motor terminal posts to protect the connections.
9. Replace the top motor cover.
10. Remove the cover from the solenoid/breaker box, if necessary.
11. Connect the debarker motor red wire to terminal #2 of the solenoid in the sole-
noid/breaker box. Connect the debarker motor black wire to the alternator ground stud.
Locate the control box red wire with the ring terminal bundled with the existing harnesses
next to the alternator. Connect the control box red wire to terminal #3 of the solenoid in
the solenoid/breaker box.
See Figure 2-4. Connect one end of the supplied 20" red wire to the top terminal of the
breaker in the solenoid/breaker box. Connect the other end of the supplied 20" red wire to
the battery terminal located on the alternator. D24 Only: Connect the other end of the
supplied 20" red wire to the battery terminal located on the starter.
Connect one end of the supplied 12" black wire to terminal #4 of the solenoid in the sole-
noid/breaker box. Connect the other end of the supplied 12" black wire to the alternator
ground stud. D24 Only: Connect the other end of the supplied 12" black wire to the
starter ground stud.
Connect one end of the supplied 9" red wire to terminal #1 of the solenoid in the sole-
noid/breaker box (if not already connected). Connect the other end of the supplied 9" red
wire to the bottom post of the 60 Amp breaker.

Debarker Installation
Harness Installation
2
2-7 35DBdoc032619 Debarker Installation
Connect the diode assembly to the solenoid in the solenoid/breaker box. Connect the red
wire of the diode assembly to terminal #3 of the solenoid. Connect the black wire of the
diode assembly to terminal #4 of the solenoid.
12. Replace the solenoid/breaker box cover and use the tie wraps to secure all the wires to
the existing harnesses.
FIG. 2-4
3H1148-9C
Supplied
20" Wire (Red)
Supplied
9” Wire (Red)
Supplied
12" Wire (Black)
Solenoid/Breaker Box
Solenoid
Breaker
Alternator
Alternator Battery
Terminal
Alternator
Ground Stud
Blade Guide
Arm Motor Wires
Debarker Motor
Wire (Red)
Debarker Motor
Wire (Black)
Control Box
Wire (Red)
Debarker
Harness
Diode Assembly
D24 Only
Supplied
20" Wire
(Red)
Supplied
12" Wire (Black)
Starter

Debarker Installation
Control Component Installation
Debarker Installation 35DBdoc032619 2-8
2
2.3 Control Component Installation
DANGER! Before performing any service to this equip-
ment, turn the power toggle switch to the OFF position and
disconnect the sawmill battery ground terminal. Failure to
do so will result in serious injury or death.
See SECTION 4 for the appropriate wiring diagram to aid in installation.
1. Remove the front panel (leave wire connections) from the control box.
2. Using the back side of the front panel for a guideline, cut out holes in the front panel lexan
decal for the debarker on/off and in/out switches. Install the provided debarker on/off and
in/out switches, 1/16" nylon washers, and rubber boots in place as shown.
See Figure 2-5.
FIG. 2-5
3H1148-1
Debarker
On/Off Switch
Debarker
In/Out Switch
Rubber
Boot (2)
Nylon
Washer (2)

Debarker Installation
Control Component Installation
2
2-9 35DBdoc032619 Debarker Installation
3. Connect the red wire from the AUX post of the circuit breaker CB1 to the top terminal on
the debarker on/off switch.
Connect the red wire labeled "3" from the debarker harness to the bottom terminal on the
debarker on/off switch.
Connect the black wire labeled "4" from the debarker harness to the top middle terminal
on the debarker in/out switch.
Connect the red wire labeled "5" from the debarker harness to the bottom middle terminal
on the debarker in/out switch.
Connect the red wire from the AUX post of the circuit breaker CB2 to the top end terminal
on the debarker in/out switch.
Connect the black wire from the ground stud to the bottom end terminal on the debarker
in/out switch.
See Figure 2-6. Only wires referred to above are shown.
4. Reinstall the front panel to the control box.
FIG. 2-6
3H1148-2
Debarker
On/Off
Switch
Debarker
In/Out
Switch
Circuit
Breaker
(CB1)
Circuit
Breaker
(CB2)
Debarker Harness
Ground Stud
AUX AUX
3
45

Debarker Installation
Debarker Installation 35DBdoc032619 3-1
3
SECTION 3 ALIGNMENT
DANGER! Before performing any service to this equip-
ment, turn the power toggle switch to the OFF position and
disconnect the sawmill battery ground terminal. Failure to
do so will result in serious injury or death.
The debarker blade should be aligned to the sawmill blade to insure proper operation.
The debarker blade should be parallel with and aligned vertically with the sawmill blade.
1. Use the debarker in/out switch to move the debarker all the way in. Turn the power toggle
switch to OFF (0) and lock the control box. This will prevent the debarker from being
turned on while performing alignment procedures.
2. Check the squareness of the debarker with the sawmill blade. Adjust the debarker
mounts if necessary until the debarker is square with the sawmill blade.
Loosen the debarker mounting bolts. Tilt the debarker frame as necessary until the
debarker is square with the sawmill blade. Retighten the mounting bolts.
See Figure 3-1.
FIG. 3-1
3H1148-3D
Loosen mounting bolts
to tilt debarker frame

Debarker Installation
3
3-2 35DBdoc032619 Debarker Installation
3. Clip the blade guide alignment tool to the sawmill blade. Make sure the tool lies flat on the
blade and does not contact a tooth that could cause it to angle.
See Figure 3-2.
4. Check the height of the debarker blade against the alignment tool. The bottom edge of
the tool should align with the center of the debarker blade.
To adjust the blade up or down, loosen the four blade motor mount bolts. Loosen the jam
nut on the adjustment bolt. Turn the adjustment bolt clockwise to push the motor and
blade down. Turn the adjustment bolt counterclockwise and slide the motor up to raise the
motor and blade. Retighten the adjustment bolt jam nut and four motor mount bolts.
5. Use the debarker in/out switch to move the debarker all the way out.
6. Move the blade guide alignment tool on the sawmill blade and check the position of the
debarker blade against the tool. If the debarker blade is not centered with the tool, read-
just the debarker mounting bolts to adjust the debarker assembly parallel to the blade.
FIG. 3-2
3H1146-6E
1/2 Debarker
blade
thickness
Sawmill
blade
Alignment tool
Debarker
blade
Loosen motor
mounting bolts (4)
Loosen jam nut
Adjust bolt to move
motor and blade up or down

Operation and Maintenance
Locking Pin Operation
Operation and Maintenance 35DBdoc032619 4-1
4
SECTION 4 OPERATION AND MAINTENANCE
4.1 Locking Pin Operation
See Figure 4-1. The debarker is equipped with a locking pin. Insert the locking pin to lock
the debarker in place when towing the sawmill. Remove the locking pin to unlock the
debarker while the debarking is required during sawing.
Before operating the debarker, make sure the locking pin is removed from its travel
position. Turn the power toggle switch to OFF (0). Pull the debarker out to relieve pres-
sure on the locking pin. Remove the locking pin.
Before towing the sawmill, lock the debarker in the travel position. Use the debarker
in/out switch to move the debarker all the way in. Push the debarker in until the travel
position holes align. Insert the locking pin.
To move the debarker out of the way during sawing, use the debarker in/out switch to
move the debarker all the way out.
FIG. 4-1
Locking pin
in travel position
3H1146-7D

Operation & Maintenance
Control Overview
4
4-2 35DBdoc032619 Operation & Maintenance
4.2 Control Overview
The Debarker Option allows you to remove bark from logs ahead of the bandsaw blade.
This prevents the bandsaw blade from contacting dirt, sand, or other debris in the bark
that can dull the blade.
See Figure 4-2. The debarker control includes two toggle switches.
The Blade Motor ON/OFF toggle switch turns the blade motor on to start the
debarker blade. The sawmill power toggle switch must be on and the sawmill power
feed joystick must be activated in the forward direction before the blade motor can
be turned on.
FIG. 4-2
3H1149-1

Operation & Maintenance
Control Overview
Operation & Maintenance 35DBdoc032619 4-3
4
The debarker IN/OUT switch moves the debarker cutting head toward or away from
the log.
See Figure 4-3.
FIG. 4-3
3H1149-2

Operation & Maintenance
Operation
4
4-4 35DBdoc032619 Operation & Maintenance
4.3 Operation
DANGER! Make sure all guards and covers are in place
and secured before operating the debarker option. Failure
to do so may result in serious injury.
DANGER! Keep all persons out of the path of moving
equipment when operating the debarker. Failure to do so
will result in serious injury.
1. Make sure the warning light is on (or bell sounds prior to Rev. A.07) when the debarker is
turned on.
WARNING! Debarker is ON when warning light is ON (or
bell sounds (prior to Rev. A.07)). DO NOT disconnect the
warning light (or bell). Doing so may result in serious injury.
2. Use the in/out switch to pivot the debarker all the way out.
3. Move the sawmill carriage forward and pivot the debarker in until the debarker blade
engages with the end/side of the log.
4. Turn the debarker on/off switch to ON (1).
5. Proceed with cutting. The in/out switch will keep the debarker against the side of the log.
Depending on log shape, you may have to pivot the debarker in and out for smooth cut-
ting.
NOTE: The debarker can continuously remove up to
approximately 1” of material from the log; no motor cool
down time is required. Slower feed rates may be required
for optimal debarker operation.
6. Once the carriage is past the end of the log, pivot the debarker away from the log. Return
the carriage.
IMPORTANT! Always remember to pivot the debarker out
of the way of the log before returning the carriage after the
cut. DO NOT move the carriage forward while the debarker
is contacting the log without the blade spinning.
7. When done sawing and ready to store or transport the sawmill, place the debarker in its