woodmizer ST Guide

Standard Trailer
Safety, Operation, Maintenance
& Parts Manual
ST Trailer Option
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
September 2008
Form #793

©2018
Printed in the United States of America. All rights reserved. No part of this manual 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

Table of Contents Section-Page
Table of Contents ST97doc031218 iii
SECTION 1 STANDARD HITCH 1-1
1.1 Operation ................................................................................................1-1
1.2 Maintenance ...........................................................................................2-1
SECTION 2 PARTS LISTS 3-1
2.1 Trailer Hitch Assembly, Standard ..........................................................3-1
2.2 Trailer Axle Assembly, Standard ...........................................................3-3
LT25/LT27 Rev. D7.00+
LT30 Rev. H5.00+
LT40 Rev. H6.00+
LT28 Rev. A1.00+
2.3 Trailer Axle Assembly, Standard ...........................................................3-5
LT25 Rev. C2.00 - D6.00
LT30 Rev. F7.00 - H4.00
LT40 Rev. F8.00 - H5.00
2.4 Outriggers...............................................................................................3-7
2.5 Outrigger Assembly, Long .....................................................................3-8
LT25/LT27 Rev. D4.00+
LT30 Rev. H3.00+
LT40 Rev. H4.00+
LT28 Rev. A1.00+
2.6 Outrigger Assembly, Long ...................................................................3-10
LT25 Rev. C8.00 - D3.00
LT30 Rev. G6.00 - H2.00
LT40 Rev. G7.00 - H3.00
2.7 Outrigger Assembly, Long ...................................................................3-12
LT25 Rev. C2.00 - C7.00
LT30 Rev. F7.00 - G5.00
LT40 Rev. F8.00 - G6.00
2.8 Outrigger Assembly, Front...................................................................3-14
LT25L/LT27 Rev. C8.00+
LT40 Rev. G7.00+
LT28 Rev. A1.00+
2.9 Outrigger Assembly, Front...................................................................3-16
LT25L Rev. C2.00 - C7.00
LT40 Rev. F8.00 - G6.00
2.10 Outrigger Assembly, Long (LT30).......................................................3-18
LT30 Rev. J9.00+
2.11 Outrigger Assembly, Short Front .........................................................3-20
LT25/LT27 Rev. C8.00+
LT30 Rev. G6.00+
LT40 Rev. G7.00+
LT28 Rev. A1.00+
2.12 Outrigger Assembly, Short Front .........................................................3-22
LT25 Rev. C2.00 - C7.00
TOC

iv ST97doc031218 Table of Contents
Table of Contents Section-Page
LT30 Rev. F7.00 - G5.00
LT40 Rev. F8.00 - G6.00
2.13 Outrigger Assembly, Rear....................................................................3-24
LT25L/LT27 Rev. C8.00+
LT40 Rev. G7.00+
LT28 Rev. A1.00+
2.14 Outrigger Assembly, Rear....................................................................3-26
LT25L Rev. C2.00 - C7.00
LT40 Rev. F8.00 - G6.00
2.15 Outrigger Assembly, Short Rear ..........................................................3-28
LT25/LT27 Rev. C8.00+
LT30 Rev. G6.00+
LT40 Rev. G7.00+
LT28 Rev. A1.00+
2.16 Outrigger Assembly, Short Rear ..........................................................3-30
LT25 Rev. C2.00 - C7.00
LT30 Rev. F7.00 - G5.00
LT40 Rev. F8.00 - G6.00
2.17 Trailer Lights........................................................................................3-32
LT28 Rev. A6.00+
LT30 Rev. K1.00+
LT40 Rev. K2.00+
2.18 Trailer Lights........................................................................................3-34
LT25/LT27 Rev. C2.00+
LT28 Rev. A1.00 - A5.00
LT30 Rev. F7.00 - J9.03
LT40 Rev. F8.00 - K1.04
INDEX 1-I

Standard Hitch
Operation
Standard Hitch ST97doc031218 1-1
1
SECTION 1 STANDARD HITCH
1.1 Operation
IMPORTANT! Your vehicle should be equipped with a
Class 2 hitch with a solid 2” ball (not two-piece) and rated
for at least 3500 pounds (1588 kg). The hitch should be
correctly mounted to the towing vehicle so that it will be
able to pull this type of load.
1. Pull the mill behind the towing vehicle and place the hitch over the ball coupling on your
vehicle. Adjust the coupler if necessary so it is as tight as possible on the ball and the
locking lever can still be opened and closed.
See Figure 1-1.
2. Flip the locking handle downward, being sure the bracket underneath firmly clamps
around the ball. Secure the locking handle with the safety pin.
DANGER! Make sure hitch bracket is securely fastened
FIG. 1-1
SM0193
Cross safety chains and secure
to vehicle
Engage locking handle
and secure with
safety pin
Be sure hitch bracket
is securely fastened
to hitch ball
Adjust hitch up or
down so sawmill
travels horizontal
to ground

Standard Hitch
Operation
1
1-2 ST97doc031218 Standard Hitch
around ball before towing the sawmill. Ball should be com-
pletely engaged by the hitch bracket and securely locked in
place. Use the hitch only with the specified ball size. Fail-
ure to do so may result in serious personal injury and/or
severe machine damage.
3. Cross the safety chains underneath the hitch and hook to the vehicle. The chains should
be connected so that there is still slack in the chains when the vehicle is turned sharply in
either direction.
DANGER! Make sure your hitch has adequate safety chain
hookups. 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.
4. Connect the light wiring harness plug from the sawmill to the recetacle on your vehicle.
Check signals and brake lights.
5. Raise the front outrigger. Recheck that all loose items are removed or secured (such as
Resaw Option, Shingle/Lapsiding Option, cant hooks, etc.).
6. The hitch on the mill is adjustable. It should be raised or lowered to let the mill travel hori-
zontal to ground level. Adjust by removing the two mounting bolts. Then slide the hitch
tube up or down to new set of holes. Replace bolts and nuts.
DANGER! Be sure that the hitch and safety chains are
secure before towing the sawmill. 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. Make sure you have complied with all
applicable Federal, State and Local motor vehicle safety
laws.
DANGER! Chock the mill to prevent movement before
unhitching it from the towing vehicle. Failure to do so may
result in serious injury or death.
WARNING! Always check trailer tires for proper inflation
before towing sawmill. Failure to do so may lead to tire fail-

Standard Hitch
Operation
Standard Hitch ST97doc031218 1-3
1
ure resulting in property damage and/or serious injury or
death.

Maintenance
-1 ST97doc031218
1.2 Maintenance
1. Clean and repack the trailer axle wheel bearings with lithium grease every 12 months or
12,000 miles (19,308 km), whichever comes first.
2. Make sure that the trailer tires are correctly inflated to the pressure shown on the tire.
CAUTION! Always check trailer tires for proper inflation
before towing sawmill. Failure to do so may result in
machine damage.
3. Check the adjustment of the trailer hitch coupler bracket frequently and adjust if neces-
sary. Replace any bent or otherwise damaged parts before using the hitch. Use only parts
provided by the hitch manufacturer for this hitch model.
4. The trailer brakes should be adjusted as follows:
after the first 200 miles of operation when the brake shoes and drums have
“seated,”
at 3,000 mile intervals,
or as use and performance requires.
The brakes should be adjusted in the following manner:
1. Jack up the trailer and secure on adequate capacity jack stands. Follow the trailer manu-
facturer's recommendations for lifting and supporting the unit. Make sure the wheel and
drum rotates freely.
CAUTION! Do not lift or support trailer on any part of the
axle or the suspension system. Never crawl under your
trailer unless it is resting on properly placed jack stands.
2. Remove the adjusting hole cover from the adjusting slot on the bottom of the brake back-
ing plate.
3. With a screwdriver or standard adjusting tool, rotate the star wheel of the adjuster assem-
bly to expand the brake shoes. Adjust the brake shoes out until the pressure of the linings
against the drum makes the wheel very difficult to turn. NOTE: For drop spindle axles, a
modified adjusting tool may be necessary.
4. Rotate the star wheel in the opposite direction until the wheel turns freely with a slight lin-
ing drag.

Maintenance
ST97doc031218 -2
5. Replace the adjusting hole cover and lower the wheel to the ground.
6. Repeat the above procedure on all brakes. For best results, the brakes should all be set
at the same clearance.
The wheel nut torque should be 90lbs.-ft. Tighten in 3 stages.
See Table 1-1. The wheel torque requirements are shown below.
Tighten bolts or nuts in the sequence shown for Wheel Torque Requirements.
See Figure 1-2.
Wheel Torque Sequence
Size 1st Stage 2nd Stage 3rd Stage
12” 25 35 50
13” 25 35 50
14” 25 50 90
15” 25 50 90
16” 25 50 90
TABLE 1-1
FIG. 1-2
SM0409
11
4
43
3
2
25
4 BOLT 5 BOLT

Maintenance
-3 ST97doc031218
If applicable, grease the Fine Adjust Outriggers (FAOs) every 200 hours of operation or
once a month, whichever comes first. Use one squeeze of a NLGI No. 2 grade lithium
grease from a grease gun to lubricate the outrigger and remove any sawdust.
See Figure 1-3.
Pre-2008 Style Fine Adjust Outriggers (Optional)
If applicable, grease the Fine Adjust Outriggers (FAOs) every 200 hours of operation or
once a month, whichever comes first. Use one squeeze of a NLGI No. 2 grade lithium
grease from a grease gun to lubricate the outrigger and remove any sawdust.
See Figure 1-4. To access the outrigger grease fitting, raise the outrigger base all the
way. The grease fitting will be accessible through the lowest outrigger hole.
FIG. 1-3
FIG. 1-4
SM0336-2
Grease Fitting
SM0214
Grease Fitting

Parts Lists
Trailer Hitch Assembly, Standard
Parts Lists ST97doc031218 2-1
2
SECTION 2 PARTS LISTS
2.1 Trailer Hitch Assembly, Standard
REF DESCRIPTION (INDICATES PARTS AVAILABLE IN ASSEMBLIES ONLY) PART # QTY.
HITCH, STANDARD TRAILER 015033 1
1Chain, 30 Inch Safety 107163 2
2Hitch Weldment 110277 1
3Bolt, 1/2-13x4 1/2 Hex Head Grade 5 F05008-35 1
4Nut, 1/2-13 Nylon Hex Lock F05010-8 1
5Washer, 7/16 Standard Flat F05011-35 2
6 BOLT, 58-11 X 6" HEX HEAD GRADE 5 F05009-22 2
7 WASHER, 5/8” SAE FLAT F05011-5 1
1 Added LT25 rev. C8.00, LT30 rev. C6.00 and LT40 rev. C7.00 and later.
4
8 NUT, 5/8-11 NYLON LOCK F05010-34 2
9 WASHER, 5/8” SPLIT LOCK F05011-27 2
TOWING EXTENSION KIT (NOT SHOWN, OPTIONAL) K12571 1
Bolt, 5/8-11 x 2 1/2" Hex Head Grade 5 F05009-20 2 
Washer, 5/8" Split Lock F05011-27 2
Washer, 5/8" SAE Flat F05011-5 2
Bracket, Safety Chain Bumper S12289-N 2 
Nut, 5/8-11 Free Hex F05010-5 2
230023D
6
8
7
9
1
2
5
4
3

Parts Lists
Trailer Hitch Assembly, Standard
2
2-2 ST97doc031218 Parts Lists

Parts Lists
Trailer Axle Assembly, Standard
Parts Lists ST97doc031218 3-3
3
2.2 Trailer Axle Assembly, Standard
LT25/LT27 Rev. D7.00+
LT30 Rev. H5.00+
LT40 Rev. H6.00+
LT28 Rev. A1.00+
REF DESCRIPTION (INDICATES PARTS AVAILABLE IN ASSEMBLIES ONLY) PART # QTY.
AXLE FRAME ASSEMBLY, STANDARD 014684 1
1Frame, Trailer Axle W09751 1 
Mount Bracket, Trailer Fender (requires welding) W09784 2
2Axle, 3500 Lb. With Springs P09772 1
3Spring, 2000 Lb. Dexter Leaf P09612 1
4Spring, 2500 Lb. Dexter Leaf 014586 1
Bearing Kit, Sawmill Axle Spindle K07549 1
5Bearing, Dexter #L44649 P22573-1 1 
6Bearing, Dexter #L68149 P22572-1 1 
7Race, Inner Dexter #L68111 P22572-2 1 
8Race, Outer Dexter #L44610 P22573-2 1 
9Seal, 13" Wheel Bearing Dust P07554 1
10 Cap, Wheel Bearing Dust P04493 2
5
6
7
8
9
10
11
12
13
13
14
13
12
14
15
15
11
16
17
18
19
20
20
25
SM0274B
1
2
3
4
13
21
22
23
23
24

Parts Lists
Trailer Axle Assembly, Standard
3
3-4 ST97doc031218 Parts Lists
11 Wheel Assembly, Goodyear ST215/75R14 015987 2
12 Plate, Trailer Axle Shackle M07528 4
13 Bolt, 9/16-8 X 3" Shackle P04644 6
14 Nut, 9/16-8 Shackle P04643 6
15 Nut, 1/2-20 Wheel Lug P04646 10
16 BOLT, 1/2-13 X 4" HEX HEAD GRADE 2 F05008-26 4
17 WASHER, 1/2" EXTERIOR STAR F05011-39 4
18 WASHER, 1/2” SAE FLAT F05011-2 4
19 NUT, 1/2-13 HEX NYLON LOCK F05010-8 4
20 FENDER, TRAILER WHEEL W11452 2
21 DECAL, FENDER DAMAGE CAUTION S11761 2
22 STRAP, 6” RUBBER 016542 4
23 WASHER, 1/4” SAE FLAT F05011-11 4
24 BOLT, 1/4-20 X 1 1/4” HEX HEAD FULL THREAD F05005-3 2
25 NUT, 1/4-20 LOCK F05010-21 2

Parts Lists
Trailer Axle Assembly, Standard
Parts Lists ST97doc031218 3-5
3
2.3 Trailer Axle Assembly, Standard
LT25 Rev. C2.00 - D6.00
LT30 Rev. F7.00 - H4.00
LT40 Rev. F8.00 - H5.00
REF DESCRIPTION (INDICATES PARTS AVAILABLE IN ASSEMBLIES ONLY) PART # QTY.
AXLE FRAME ASSEMBLY, STANDARD 014684 1
1Frame, Trailer Axle W09751 1 
Mount Bracket, Trailer Fender (requires welding) W09784 2
2Axle, 3500 Lb. With Springs P09772 1
3Spring, 2000 Lb. Dexter Leaf P09612 1
4Spring, 2500 Lb. Dexter Leaf 014586 1
Bearing Kit, Sawmill Axle Spindle K07549 1
5Bearing, Dexter #L44649 P22573-1 1 
6Bearing, Dexter #L68149 P22572-1 1 
SM0083F
1
8
14
2
9
15
20
21
4
10
16
3
11
17
5
12
18
6
13
19
7
22

Parts Lists
Trailer Axle Assembly, Standard
3
3-6 ST97doc031218 Parts Lists
7Race, Inner Dexter #L68111 P22572-2 1 
8Race, Outer Dexter #L44610 P22573-2 1 
9Seal, 13" Wheel Bearing Dust P07554 1
10 Cap, Wheel Bearing Dust P04493 2
11 Wheel Assembly, Goodyear ST215/75R14 015987 1 2
Wheel Assembly, LT185R14 D 014677 12
12 Plate, Trailer Axle Shackle M07528 4
13 Bolt, 9/16-8 X 3" Shackle P04644 6
14 Nut, 9/16-8 Shackle P04643 6
15 Nut, 1/2-20 Wheel Lug P04646 10
16 BOLT, 1/2-13 X 4" HEX HEAD GRADE 2 F05008-26 4
17 WASHER, 1/2" EXTERIOR STAR F05011-39 4
18 WASHER, 1/2” SAE FLAT F05011-2 4
19 NUT, 1/2-13 HEX NYLON LOCK F05010-8 4
20 FENDER, TRAILER WHEEL W11452 2
21 DECAL, FENDER DAMAGE CAUTION S11761 2
22 PIN, 5/16” X 1” DETAINING F05012-45 2
1 Use 015987 wheel for LT25 Rev. C6.00, LT30 Rev. G3.00, LT40 Rev.G4.00 and later. Use 014677 for previous revisions orupgrade
both wheel assemblies to 015987 to ensure proper mill tracking. (The wheel types have slightly different diameters.)

Parts List
Outriggers
Parts List ST97doc031218 3-7
3
2.4 Outriggers
REF DESCRIPTION (INDICATES PARTS AVAILABLE IN ASSEMBLIES ONLY) PART # QTY.
1 OUTRIGGER ASSEMBLY, LONG (See Section 2.5)012997 1
OUTRIGGER ASSEMBLY, LONG (LT30 ONLY) (See Section 2.10)016414 1
2 OUTRIGGER ASSEMBLY, LONG (See Section 2.5)012997 1
3 OUTRIGGER ASSEMBLY, SHORT (See Section 2.11)A04278 1
4 OUTRIGGER ASSEMBLY, SHORT W/JACK HOLDER (See Section 2.15)A09475 1
5 OUTRIGGER ASSEMBLY, LONG FRONT (See Section 2.8)015143 1
6 OUTRIGGER ASSEMBLY, LONG REAR (See Section 2.13)A12083 1
230026-1C
12
3
4
12
3
4
5
6
LT25/LT30/LT30HD/LT60HD (16’ Bed)
LT25L/LT27/LT40/LT40HD/LT70HD (24’ Bed)

Parts List
Outrigger Assembly, Long
3
3-8 ST97doc031218 Parts List
2.5 Outrigger Assembly, Long
LT25/LT27 Rev. D4.00+
LT30 Rev. H3.00+
LT40 Rev. H4.00+
LT28 Rev. A1.00+
REF DESCRIPTION (INDICATES PARTS AVAILABLE IN ASSEMBLIES ONLY) PART # QTY.
OUTRIGGER ASSEMBLY, LONG 012997 1 1/2
1Guide, Long Outrigger Guide 012996 1
2Leg, Outrigger 016401 1
3Cap, Outrigger Leg P09926 1
4Spring, Outrigger Pin 016145 1
Pin Kit, 3/4” Outrigger Pull 016148 1
5Pin, 3/4” Outrigger Pull 016147 1 
6Pin, 5/16" X 2 1/2" Roll F05012-47 1
1
2
3
4
5
67
8
10
9
3H0807B

Parts List
Outrigger Assembly, Long
Parts List ST97doc031218 3-9
3
7Pin, 3/16" X 1 3/4" Roll F05012-1032 1
Pin, 1/8” x 1 1/4” Cotter F05012-5921
8 BOLT, 3/8-16 X 5” CARRIAGE HEAD F05007-113 4/8
9 WASHER, 3/8” SAE FLAT F05011-3 4/8
10 NUT, 3/8-16 HEX NYLON LOCK F05010-10 4/8
1 Washers (2) removed from spring to improve outrigger locking pin operation (LT25 Rev. D4.01, LT30 Rev. H3.01 and LT40 Rev.
H4.01). Washers may be removed on previous revisions with 3/4” diameter locking pins to improve operation.
2 Use F05012-103 3/16" X 1 3/4" Roll Pin for LT25 D5.01, LT30 H3.02 and LT40 H4.02 and later revision mills. Use F05012-59 1/8”
x 1 1/4” Cotter Pin for all prior revision mills.

Parts List
Outrigger Assembly, Long
3
3-10 ST97doc031218 Parts List
2.6 Outrigger Assembly, Long
LT25 Rev. C8.00 - D3.00
LT30 Rev. G6.00 - H2.00
LT40 Rev. G7.00 - H3.00
REF DESCRIPTION (INDICATES PARTS AVAILABLE IN ASSEMBLIES ONLY) PART # QTY.
OUTRIGGER ASSEMBLY, LONG 012997 1 1/2
1Guide, Long Outrigger Guide 012996 1
2Leg, Outrigger W07537 1
3Cap, Outrigger Leg P09926 1
4Spring, Outrigger Pin 016145 1
5Washer, 3/4" SAE Flat F05011-62 2 2
Pin Kit, 3/4” Outrigger Pull 016148 1
1
2
3
54
6
78
9
11
10
SM0136B