woodmizer BX6 Guide

Bed Extension
Safety, Operation,
Maintenance & Parts Manual
BX6 for 2004+ Sawmills Rev. A1.04
BX12 for 2004+ Sawmills Rev. A1.06
BX24 for 2004+ Sawmills Rev. A1.06
Safety is our #1 concern! Read and understand
all safety information and instructions before
operating, setting up or maintaining this machine.
April 2004 Form #295
!

2 BXdoc041513 Table of Contents
Table of Contents Section-Page
SECTION 1 SAFETY & GENERAL INFORMATION 1-1
1.1 Safety Symbols..........................................................................................................1-1
1.2 Bed Extension Setup..................................................................................................1-2
1.3 Bed Extension Operation...........................................................................................1-2
1.4 Bed Extension Maintenance......................................................................................1-3
SECTION 2 INSTALLATION 1-1
2.1 Alignment Box Installation .......................................................................................1-1
2.2 Leg Installation..........................................................................................................1-3
2.3 Extension Frame Attachment....................................................................................1-5
2.4 Support Brace Installation.........................................................................................1-8
2.5 Extra Leg and Bed Rail Installation (24-foot Bed Extensions Only)......................1-10
2.6 Hydraulic Log Handling Equipment Kits for MBX24 Bed Extensions..................1-12
2.7 Hydraulic Log Handling Equipment Kits for MBX12 Bed Extensions..................1-12
2.8 Hydraulic Log Handling Equipment Kits for BX12 Bed Extensions For S, M Super, L
Frames .................................................................................................................................1-12
2.9 Mounting the BX12 Bed Extension to Sawmills with "M" Frame and AH4-7 Hy-
draulics .................................................................................................................................1-13
2.10 Foot Dimensions : Sawmills with M Frame and BX12 i BX24 Bed Extensions....1-14
SECTION 3 BED EXTENSION ALIGNMENT 2-1
SECTION 4 LOG CLAMP OPERATION 3-1
SECTION 5 STORAGE PROTECTION 4-1

Table of Contents Section-Page
Table of Contents BXdoc041513 3
SECTION 6 BED EXTENSION PARTS 5-1
6.1 BX12 Bed Extensions................................................................................................ 5-1
6.2 BX24 Bed Extensions................................................................................................ 5-3
6.3 Front & Rear Bed Rail Assembly (BX6 Only) ......................................................... 5-5
6.4 Front & Rear Bed Rail assembly (BX12 & BX24 Only)..........................................5-6
6.5 Front Middle Bed Rail Assembly (BX12 & BX24 Only) ........................................5-7
6.6 Rear Middle Bed Rail Assembly (BX12 Only) .......................................................5-8
6.7 Pivot Bed Rail Assembly (BX24 Only) ....................................................................5-9
6.8 Pivot Bed Rail Assembly (BX12 Only) ..................................................................5-10
6.9 Accessory Bed Rail Assembly (BX24 Only)..........................................................5-11
6.10 Log Clamp Mount Assembly (BX24).....................................................................5-12
6.11 Manual Log Side Support........................................................................................5-14
6.12 Mast Track Extension & Chain...............................................................................5-16
6.13 Bed Extension Stationary Legs ...............................................................................5-18
6.14 Middle Stationary Legs (BX24 Only) ...................................................................5-19
6.15 Fine Adjust Outrigger Leg.......................................................................................5-20
6.16 Side Fine Adjust Outrigger Leg ..............................................................................5-21
6.17 Manual Log Clamp (manual bed extension equipment: 12/24M) .........................5-22
6.18 Manual Log Clamp BX6 .......................................................................................5-23
6.19 Brace Assembly, SBX6...........................................................................................5-24
6.20 Brace Assembly, MBX6..........................................................................................5-25
6.21 LBX6 Connection Bracket......................................................................................5-26
6.22 Brace Assembly, SBX12.........................................................................................5-27
6.23 MBX12 Connection Brace......................................................................................5-28
6.24 Brace Assembly, LBX12.........................................................................................5-30
6.25 Brace Assembly, SBX24.........................................................................................5-31
6.26 Brace Assembly, MBX24........................................................................................5-32
6.27 Brace Assembly, LBX24.........................................................................................5-33
6.28 Brace Assembly, MBX24 Super .............................................................................5-34
6.29 Bed Extension, MBX6 Super..................................................................................5-35
6.30 BX12 Super Connection Brace ...............................................................................5-36
6.31 Oil Flow Divider w/Hydraulic Hoses (BX12/24 & ’’M” Frame)...........................5-37
6.32 Log Loader (Single Arm)........................................................................................5-38
6.33 MBX12 Connection Brace......................................................................................5-40

4 BXdoc041513 Table of Contents
Table of Contents Section-Page
SECTION 7 HYDRAULIC SYSTEM 6-1
7.1 Hydraulic Hose Hanger Kit, MBX12/24 Bed Extension (AH1-3) ...........................6-1
7.2 Hydraulic Hose Hanger Kit, MBX12/24 Bed Extension (AH4-7)............................6-2
7.3 Hydraulic Log Side Support, BX12 ”M” Frame .....................................................6-3
7.4 Hydraulic Log Side Supports, MBX12 ..................................................................6-5
7.5 Hydraulic Log Side Supports, MBX24 ...................................................................6-7
7.6 BX12 Hydraulic Hose Kit.........................................................................................6-9
7.7 Hydraulic Hose Kit, BX24 Bed Extension .............................................................6-12
7.8 Hydraulic Control Box, 16-Section LT20/40/70 AC .............................................6-15
7.9 Hydraulic Control Box, LT20/40/70 AC 10-Section .............................................6-18

Safety & General Information
Safety Symbols
Safety & General Information HDSdoc041513 1-1
1
SECTION 1 SAFETY & GENERAL INFORMATION
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.
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.
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 & General Information
Bed Extension Setup
1
1-2 HDSdoc041513 Safety & General Information
1.2 Bed Extension Setup
WARNING! Securely fasten the legs of the bed extension to the
ground before using the bed extension. Failure to do so will result in
serious injury or death.
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.
1.3 Bed Extension Operation
IMPORTANT! This bed extension is designed and intended to
work with the LT20, LT40 and LT70 series Wood-Mizer sawmills.
IMPORTANT! The operator should get adequate training in operation
and adjustment of the sawmill.
DANGER! Make sure all guards and covers are in place and secured
before operating or transporting the bed extension. Failure to do so
may result in serious injury.
Be sure the blade housing and pulley covers are closed
(i.e. the safety switches placed on these covers are engaged).
DANGER! Keep all persons out of the path of moving equipment and
logs when operating the bed extension or loading and turning logs.
Failure to do so may 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 may result
in serious injury.
DANGER! Keep all persons out of the path of returning boards. Failure
to do so may result in serious injury.
WARNING! Secure all loose clothing and jewellery before operating
the sawmill. Failure to do so will result in serious injury or death.
WARNING! Always make sure log is clamped securely before sawing.
Failure to do so will result in serious injury or death.
WARNING! Always leave loading arm halfway up while log is on
sawmill bed. Failure to do so will result in serious injury or death.
!

Safety & General Information
Bed Extension Maintenance
Safety & General Information HDSdoc041513 1-3
1
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. Failure to do so will result in serious injury,
death or damage to the equipment.
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.
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. Damage to the sawmill may
result.
CAUTION! Be careful when manually lowering the log loader. Do not
drop the loader onto the ground or perform any action which might
break the velocity fuse valves on the loader cylinders.These valves
control hydraulic flow and are necessary to prevent the loading arm
from collapsing during use.
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! Always make sure the up/down switch moves to the neutral
or off position when released to ensure that the saw head stops
moving. Damage to the sawmill may result.
CAUTION! Move the hydraulic clamp and turner to provide maximum
ground clearance before transporting. Failure to do so may result in
damage to the sawmill.
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.
1.4 Bed Extension Maintenance
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.

Safety & General Information
Bed Extension Maintenance
1
1-4 HDSdoc041513 Safety & General Information
CAUTION! Do not overtension the chain. Damage to the feed motor
may result.
CAUTION! Do not overtighten the set screws on the hydraulic valve
assembly. Overtightening may cause the threads in the screw holes to
strip.
CAUTION! Pressure should not exceed 2000 psi. Pressure above
2000 p.s.i. may damage the hydraulic hoses.

Installation
Alignment Box Installation
Installation BXdoc041513 2-1
2
SECTION 2 INSTALLATION
The bed extension option includes a 6, 12 or 24-foot frame and the necessary hardware
to attach it to your sawmill. After installation, the extension will allow you to cut longer logs
than is possible with the standard sawmill.The bed extension is designed for operation
with a stationary sawmill. A portable mill can be connected to the extension but will
require 2 to 4 hours for each setup. The extension should be mounted to a firm, level
footing. See 2.10 located in the back of this manual for foot dimensions for each sawmill
model and bed extension combination. Note the positions labeled A through E on each
drawing. These positions will be referred to later for mounting the legs to the extension
frame. Positions F, G, H and I apply to 24-foot extensions only.
2.1 Alignment Box Installation
1. Remove the feed chain from the tensioner bolt at the back end of the sawmill frame.
Break apart the master link to disconnect the chain from the bolt.
CAUTION! When removing or replacing the feed chain on
sawmills with hydraulic log handling, disconnect the
negative battery lead. This will ensure the chain does not
short the system if it contacts the power supply.
See Figure 2-1.
2. Remove the bolts and lock nuts holding the feed chain tensioner to the sawmill frame.
Remove the entire assembly from the sawmill frame. Use the same bolts and nuts to
remount the tensioner assembly to the end of the extension frame.
FIG. 2-1
3H0315PL-3
Remove Feed Stop
Bracket
Disconnect Feed
Chain

Installation
Alignment Box Installation
2
2-2 BXdoc041513 Installation
3. Install the alignment link inside the end of the bed extension frame using the appropriate
holes. Use four M10x115 hex head bolts and 10.5 flat washers to secure the box.
See Figure 2-2.
FIG. 2-2
3H0316PL-3
M10x115 Hex
Head Bolt
10.5 Flat
Washer
10.5 Flat
Washer M10 Nylon
Lock Nut
BX Link
Complete

Installation
Leg Installation
Installation BXdoc041513 2-3
2
2.2 Leg Installation
REMINDER: This section refers to positions A through E as labeled in subsection 2.10
located in the back of this manual.
1. Remove the rear leg (or outrigger) from position E on the sawmill frame. A support brace
will be installed later that connects the extension frame to the sawmill frame. The
removed sawmill leg will be repositioned on the support brace.
See Figure 2-3.
2. Use four M10 x 120 bolts and nylon lock nuts to secure a long leg at each position A and
B on the extension frame. Insert the bolts from the outside of the frame tube and attach
the nuts on the leg side of the tube.
3. BX24 only: Install a long leg at position H using four M10 x 25 bolts and nylon lock nuts.
4. Use four M10 x 25 bolts and nylon lock nuts to mount a short leg at position C on the
extension frame.
FIG. 2-3
SM0179PL-2
10.5 Flat
Washer
M10x120Carriage
Head Bolt
M10 Nylon
Lock Nut

Installation
Leg Installation
2
2-4 BXdoc041513 Installation
See Figure 2-4.
FIG. 2-4
SM0178PL-3
M10x25 Hex
Head Bolt
10.5 Flat
Washer
M10 Nylon
Lock Nut

Installation
Extension Frame Attachment
Installation BXdoc041513 2-5
2
2.3 Extension Frame Attachment
1. Position the extension frame at the end of the sawmill frame. Remove two bolts and nuts
from the alignment link and loosen the jam nut. Turn the alignment link bolt
counterclockwise to move the front plate towards as much as possible. Slide the
extension frame over the alignment link on the sawmill frame. Sight down the length of
the frames to see that they are lined up as close as possible.
See Figure 2-5.
2. Install two M10 X 115 hex head bolts in the holes together with four 10.5 flat washers.
Secure the bolts with two M10-8 nylon lock hex nuts.
FIG. 2-5
SMPL01B
Remove Bolts
and Nuts (2)
Loosen Jam Nut
Alignment Link Bolt

Installation
Extension Frame Attachment
2
2-6 BXdoc041513 Installation
See Figure 2-6.
3. Turn the alignment link bolt clockwise to tighten the bed extension and sawmill frame
tubes.
FIG. 2-6
SMPL02B
M10x115 Hex
Head Bolt
M10 Hex Nylon
Lock Nut
10.5 Flat
Washer

Installation
Extension Frame Attachment
Installation BXdoc041513 2-7
2
See Figure 2-7.
4. Be sure to tighten the alignment link jam nut against the box when the attachment
procedure is complete.
FIG. 2-7
SMPL03B
Turn alignment link
bolt clockwise

Installation
Support Brace Installation
2
2-8 BXdoc041513 Installation
2.4 Support Brace Installation
See Table. 2-1. A support brace is available to connect the bed extension and the
sawmill. See the chart below to determine which brace you need for your configuration.
1. Mount the support brace tube between the sawmill and extension frames at positions D
and E. Use four M10 x 25 bolts and lock nuts to secure the brace at position D and E.
See Figure 2-8.
2. Bolt the leg previously removed from the sawmill and a supplied short leg to the support
brace tube with four M10 x 25 bolts and nylon lock nuts each.
3. Attach the supplied length of feed chain to the existing feed chain with the master link
provided. Connect the feed chain to the tensioner bolt at the end of the extension frame.
Adjust the tensioner so that the chain is positioned as indicated below. Make sure the
feed chain is not twisted or kinked
Bed Extension Support Brace Reference Table
Sawmill Model Bed-X Brace Kit
1996+
LT30 or LT30HD
1996+ BX6 085651-1, 085653-1
1996+ BX12 014271
1996+ BX24 014273
1996+
LT40 or LT40HD
1996+ BX6 085651-1, 085656-1
1996+ BX12 014270
1996+ BX24 014272
TABLE. 2-1
FIG. 2-8
Brace Adjustment
Bolts (4)
M10 x 25
Hex Head Bolt (8)
M10 (8)
Nylon Lock Nut
& 10.5 Flat Washer (8)
Support
Brace
M10
Nylon Lock
Nut (8)
Hex Head B
10.5 Flat
Washer (8)
olt (8)

Installation
Support Brace Installation
Installation BXdoc041513 2-9
2
See Table 2-2.
BX Model Distance from top of top track rail to top of feed chain
(measure at middle of chain span)
BX6 7 - 8 inches
BX12 8 - 9 inches
BX24 10 - 11 inches
TABLE 2-2

Installation
Extra Leg and Bed Rail Installation (24-foot Bed Extensions Only)
2
2-10 BXdoc041513 Installation
2.5 Extra Leg and Bed Rail Installation (24-foot Bed Extensions Only)
1. The additional long leg should be mounted at position F shown in subsection 2.10.Use
M10 x 120 bolts and lock nuts to secure the long leg to the main frame tube.
NOTE: When bolting near the end of the main tube, the tube can collapse or "mushroom"
as the bolts are tightened. Do not overtighten the bolts to avoid deforming the main tube.
If you find it difficult to align the tracks with the alignment set screws, check that neither
frame tube is deformed. The tube can be pulled back into shape using the alignment set
screws.
See Figure 2-9.
2. Mount the additional bed rail assembly and short leg at position G on the support brace
tube. Use bolts and lock nuts to mount the short leg and bed rail to the support brace
tube. Use M10 x 120 bolts and lock nuts to mount the other end of the bed rail to the main
tube.
FIG. 2-9
SM0182PL-2
M10 X 120 Carraige Head Bolts (8)
Short Leg
Long Leg
M10
Nylon
Lock Nut (8)
10.5 Flat
Washer (8)
M10 Nylon
Lock Nuts (4)
10.5 Flat
Washer (4)
M10 X 80 Hex
Head Bolts (4)
Bed Rail
Assembly

Installation
Extra Leg and Bed Rail Installation (24-foot Bed Extensions Only)
Installation BXdoc041513 2-11
2
3. Mount two middle short legs at position I shown in subsection 2.10. Use four M12 X 30
hex head bolts.
See Figure 2-10.
FIG. 2-10
SM0204PL-5
M12x30 Hex
Head Bolts (4)
13 Flat
Washers (4)
M12 Hex Nylon
Lock Nuts (4)

Installation
Hydraulic Log Handling Equipment Kits for MBX24 Bed Extensions
2
2-12 BXdoc041513 Installation
2.6 Hydraulic Log Handling Equipment Kits for MBX24 Bed
Extensions
See Table 2-3.
2.7 Hydraulic Log Handling Equipment Kits for MBX12 Bed
Extensions
See Table 2-4.
2.8 Hydraulic Log Handling Equipment Kits for BX12 Bed Extensions
For S, M Super, L Frames
See Table 2-5.
Log Handling Function/Kit
Symbol 24M 24H1 24H2 24H3 24H4 24H5 24H6
Manual Side Supports  (3)
Manual Clamp 
Hydraulic Side Supports  (3)  (3)  (3)  (3)  (3)  (3)
Toe Board Roller      (2)
Middle Clamp    
Log Turner   
Pull-Down Clamp  
Log Deck 
TABLE 2-3
Log Handling Function/Kit
Symbol 12M 12H1 12H2 12H3 12H4 12H5 12H6
Manual Side Supports  (2)
Manual Clamp 
Hydr. Side Supp. on M frame   
Hydraulic Side Supports  (2)  (2)  (2)  (2)  (2)  (2)
Toe Board Roller      (2)
Middle Clamp    
Log Turner   
Pull-Down Clamp  
Log Deck 
TABLE 2-4
Log Handling Function/Kit
Symbol 12M-1
Manual Side Supports 
Manual Clamp 
Log Deck 
TABLE 2-5