Woodmizer LT30 Manuel utilisateur

Form 1220 Mechanical Board Return Retrofit doc091715 Page 1

FORM 1220

MECHANICAL BOARD RETURN RETROFIT

See Table 1. This optional mechanical board return can be installed to any 1997 and newer

model LT30, LT40, LT30HD or LT40HD. Use the appropriate kit depending on model, manufac-

turing date and clutch configuration as shown below.

Board Return Arm Installation

1. Raise the saw head so the area under the engine/motor can easily be accessed. Turn the key to

the OFF (#0) position and remove the key. Remove the blade from the sawmill if applicable

before proceding.

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 acti-

vated, 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.

2. Autoclutch Option only: Remove the lower belt auxiliary guard plate from the saw head.

3. Manual Clutch only: Remove the lower drive belt guard from the saw head.

Model Model Year Revision Range Clutch MBR Kit

LT30

1997-06 F7.00 - J9.00 Manual 036667

Auto 036668

2007+ J9.01+ Manual 003266

Auto 003267

LT30HD

1997-06 G1.00 - K1.00 Manual 036667

Auto 036668

2007+ K1.01+ Manual 003266

Auto 003267

LT40

1997-06 F8.00 - K1.00 Manual 036667

Auto 036668

2007+ K1.01+ Manual 003268

Auto 003269

LT40HD

1997-06 G1.00 - K2.00 Manual 036667

Auto 036668

2007+ K2.01+ Manual 003268

Auto 003269

Page 2 doc091715 Form 1220 Mechanical Board Return Retrofit

4. Open the middle blade housing cover. Locate the four holes in the horizontal saw head tube (near

the motor mount plate).

See Figure 1. Position the board return arm assembly on the saw head, aligning the four

mounting holes. Be sure the arm is oriented pointing toward the front of the sawmill as shown.

Secure the board return arm to the saw head with the provided hex head bolts, flat washers and

lock nuts.

FIGURE 1

3/8-16 x 3"

Hex Head Bolt (4)

3/8" SAE Flat Washer (2)

3/8" Hex Nylon

Locknut (4)

3/8" x 1 1/4"

Washer (2)

Board Return Arm

3H0956-1

Form 1220 Mechanical Board Return Retrofit doc091715 Page 3

5. Manual Clutch only: Assemble the replacement lower belt guard parts with the provided hex

head bolts and flat washers.

See Figure 2. Install the guard assembly with the hardware removed with the old belt guard.

FIGURE 2

1/4-20 x ½"

Hex Head Bolt (2)

Lower Belt

Guard

Belt Guard

Mount

1/4" SAE Flat

Washers (2)

Bolts from old

guard (4)

3H0956-2B

Page 4 doc091715 Form 1220 Mechanical Board Return Retrofit

Board Return Table Installation (2007+ Sawmills)

1. Install the table at the front of the sawmill bed and secure with the hardware provided.

See Figure 3. Place the table assembly in position on the table mounting bracket at the front of

the sawmill bed. Secure with the hex head bolt, U-bolts, flat washers and lock nuts provided.

2. Install the provided safety decal on the control box cover where it can easily be seen during saw-

mill operation.

FIGURE 3

Board Return

Table Assembly

U-Bolt

Hex Head

Bolt

Flat Washer

Lock Nut

Table Mounting

Bracket

3H0976

Form 1220 Mechanical Board Return Retrofit doc091715 Page 5

Board Return Table Installation (1997 - 06 Sawmills)

1. Install the table at the front of the sawmill bed with the outrigger toward the loading side of the

sawmill.

See Figure 4. Be sure the edge of the table seats in the slot on the bed frame and the table tab

seats in the leg bracket. Lower the outrigger and adjust it until it is firmly planted on the ground.

Store the pins by placing one pin in the hole under the table. Loop the second pin through the

retainer of the first pin and lock.

2. Install the provided safety decal on the control box cover where it can easily be seen during saw-

mill operation.

FIGURE 4

Place table edge in provided

tabs and lower into operating

position.

3H0436

Page 6 doc091715 Form 1220 Mechanical Board Return Retrofit

Board Return Operation

DANGER! Keep all persons out of the path of returning boards.

Failure to do so will result in serious injury.

WARNING! The board return is intended to assist a second opera-

tor 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.

CAUTION! Do not use the board return to remove boards thicker

than 4/4 (1 1/8"). Damage to the feed motor may occur.

To activate the board return, remove the retaining pin from the board return storage pin. Remove

the pin to allow the arm to drop into its operating position. Return the storage pin to its original

location and secure with the retaining pin.

See Figure 5.

FIGURE 5

Retaining

Storage

Board Return Arm

3h0955

Form 1220 Mechanical Board Return Retrofit doc091715 Page 7

When the blade reaches the end of the log, the arm will drop down to catch the board and drag it

back toward the operator as the saw head is returned.

Boards may not always return in the same path or location. If a board returns in a manner that

does not allow the sawyer or off-bearer to maintain control, it may be necessary to stop the

reverse motion of the saw head.

When the board return is to be used, a second person is required to remove the board as it is

returned. DO NOT attempt to use the board return feature when sawing alone. Use of the board

return not recommended with material shorter than 8 foot.

To bypass the board return feature, remove the retaining pin from the board return storage pin.

Remove the storage pin and lift the board return arm to its storage position (hole in arm aligned

with holes in mounting bracket). Replace the storage pin and secure with the retaining pin.

1997 - 06 Sawmills Only: Before towing the sawmill, place the board return table in its storage

position at the rear of the sawmill and secure with both locking pins. Adjust the outrigger leg up to

provide proper ground clearance when towing the sawmill.

CAUTION! To avoid damage to the board return table, secure it in

its storage location before towing the sawmill.

See Figure 6.

FIGURE 6

Secure table in

storage position

with retaining pins

3H0435-1

Page 8 doc091715 Form 1220 Mechanical Board Return Retrofit

Board Return Maintenance

Lubricate the optional board return pivot every fifty hours of operation with a NLGI No. 2 grade

lithium grease. Apply grease to the grease fitting on the board return pivot tube.

Board Return Replacement Parts (2007+ Sawmills)

REF DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY.

RETURN RETROFIT, NON-SUPER BOARD (MANUAL CLUTCH, LT30) 003266 1 1

RETURN RETROFIT, NON-SUPER BOARD (MANUAL CLUTCH, LT40) 003268 1 1

RETURN RETROFIT, NON-SUPER BOARD (AUTOCLUTCH, LT30) 003267 1

RETURN RETROFIT, NON-SUPER BOARD (AUTOCLUTCH, LT40) 003269 1

Return Assembly, Optional Non-Super Board 036693 1

1Mount Weldment, Board Return 036691 1

2Bolt, 3/8-16 x 3” Full Thread Hex Head F05007-1 4

3Washer, 1/8” x 1 1/4” 015336 2

4Nut, 3/8-16 Hex Nylon Lock F05010-10 4

16 17

SM0331C

MBR-M30/M40 Only

Form 1220 Mechanical Board Return Retrofit doc091715 Page 9

5Washer, 3/8” Flat F05011-3 5

6Pin Weldment, Board Return Arm Support 036692 1

7Fitting, 1/4-28 Grease P05060 1

8Pin, 3/16 x 1 1/4” Roll F05012-16 1

9Washer, 5/8” x 15/16” x .094 Nylon F05011-19 2

10 Arm Weldment, Board Return 015210 1

11 Washer, 3/8” Split F05011-4 3

12 Bolt, 3/8-16 x 1” Hex Head F05007-7 3

13 Bracket Weldment, Board Return 015652 1

14 Rod Kit, Board Return Replacement Pivot 016272 1

Rod, 5/8” x 7 5/8” 015225 1 

15 Pin, 3/16” Retaining w/Chain 017604 1

16 Board Return Table Parts (SEE BOARD RETURN TABLE REPLACEMENT PARTS (2007+ SAWMILLS))

17 Decal, Board Return Warning 016072 1

Parts Listed Below Included in kits for Sawmills with Manual Clutch Lever Only:

18 Guard Weldment, Clutch Handle 006026 1 1

19 Mount Weldment, Clutch Handle Guard 006025 1 1

20 Bolt, 1/4-20 x 1/2” Hex Head F05005-15 2

21 Washer, 1/4” SAE Flat F05011-11 2

22 Plate, LT40 Belt Guard Cover 074752 2 1

23 Bolt, 1/4-20 x 3/4" Hex Head w/Conical Washer F05005-134 2

1 Kits for sawmills with manual clutch handle updated with new guard and guard mount to accommodate new blade guide design avail-

able 2/08. 006026 Guard Weldment & 006025 Guard Mount Weldment replace 015657 & 015678.

2 Added to cover access opening cut in guard weldment to check belt tension (9/15).

Page 10 doc091715 Form 1220 Mechanical Board Return Retrofit

Board Return Replacement Parts (1997 - 06 Sawmills)

REF DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY.

RETURN RETROFIT, NON-SUPER BOARD (MANUAL CLUTCH) 036667 1 1

RETURN RETROFIT, NON-SUPER BOARD (AUTOCLUTCH) 036668 1

Return Assembly, Optional Non-Super Board 036693 1

1Mount Weldment, Board Return 036691 1

2Bolt, 3/8-16 x 3” Full Thread Hex Head F05007-1 4

3Washer, 1/8” x 1 1/4” 015336 2

4Nut, 3/8-16 Hex Nylon Lock F05010-10 4

5Washer, 3/8” Flat F05011-3 5

6Pin Weldment, Board Return Arm Support 036692 1

7Fitting, 1/4-28 Grease P05060 1

8Pin, 3/16 x 1 1/4” Roll F05012-16 1

9Washer, 5/8” x 15/16” x .094 Nylon F05011-19 2

10 Arm Weldment, Board Return 015210 1

11 Washer, 3/8” Split F05011-4 3

12 Bolt, 3/8-16 x 1” Hex Head F05007-7 3

714

16 17

3H0953C

MBR-M Only

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