Bison NVH-150-T User manual

NVH-240-T ...harvesting better implements!
O P E R A T O R ’ S
M A N U A L
REAR
BLADES
REAR
BLADES
4350-2113-00 (Rev. 09/06/04)
NVH-210-T
NVH-180-T
NVH-150-T

This Safety-alert Symbol indicates a hazard and means
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Indicates an imminently hazardous situation that, if not avoided, will
result in death or serious injury.
Indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury, and includes hazards that are
exposed when guards are removed.
Indicates a potentially hazardous situation that, if not avoided, may
result in minor or moderate injury.
Indicates that failure to observe can cause damage to equipment.
Indicates helpful information.
IMPORTANT
NOTE
DANGER
WARNING
CAUTION
TO THE DEALER:
VH
Assembly and proper installation of this product is the responsibility of the BISON dealer. Read manual instructions
and safety rules. Make sure all items on the Dealer's Pre-delivery and Delivery Check Lists in the Operator's Manual
are completed before releasing equipment to the owner.
VH
The dealer must complete the Warranty Registration, located on the BISON website. Warranty claims will be denied
if the Warranty Registration has not been completed.
TO THE OWNER:
VH
Read this manual before operating your BISON equipment. The information presented will prepare you to do a better
and safer job. Keep this manual handy for ready reference. Require all operators to read this manual carefully and
become acquainted with all the adjustment and operating procedures before attempting to operate. Replacement
manuals can be obtained from your selling dealer.
The equipment you have purchased has been carefully engineered and manufactured to provide dependable and
satisfactory use. Like all mechanical products, it will require cleaning and upkeep. Lubricate the unit as specified.
Observe all safety information in this manual and safety decals on the equipment.
VH VH
For service, your authorized BISON dealer has trained mechanics, genuine BISON service parts, and the necessary
tools and equipment to handle all your needs.
VH
Use only genuine BISON service parts. Substitute parts will void the warranty and may not meet standards required for
safe and satisfactory operation. Record the model number and serial number of your equipment in the spaces
provided:
Model: Date of Purchase:
Serial Number: (see Safety & Instructional Decals section for location)
Provide this information to your dealer to obtain correct repair parts.
Throughout this manual, the term IMPORTANT is used to indicate that failure to observe can cause damage to
equipment. The terms CAUTION, WARNING, and DANGER are used in conjunction with the Safety-alert Symbol, (a
triangle with an exclamation mark), to indicate the degree of hazard for items of personal safety.
ii
Introduction
4350-2113-00 (Rev. 09/06/04)

GENERAL INFORMATION
The purpose of this manual is to assist you in oper-
ating and maintaining your rear blade. Read it
carefully. It furnishes information and instructions
that will help you achieve years of dependable per-
formance. These instructions have been compiled
from extensive field experience and engineering
data. Some information may be general in nature,
due to unknown and varying operating conditions.
However, through experience and these instruc-
tions, you should be able to develop procedures
The illustrations and data used in this manual were
current at the time of printing. However, due to pos-
sible inline production changes, your machine may
vary slightly in detail. We reserve the right to rede-
sign and change the machines as may be neces-
Throughout this manual, references are made to
right and left direction. These are determined by
standing behind the tractor facing the direction of
forward travel.
sary without notification.
suitable to your particular situation.
TABLE OF CONTENTS
INTRODUCTION
GENERAL INFORMATION
SPECIFICATIONS
SAFETY RULES
SAFETY & INSTRUCTIONAL DECALS
OPERATION
OWNER SERVICE
ASSEMBLY
PARTS INDEX
BOLT TORQUE CHART
BOLT SIZE CHART & ABBREVIATIONS
WARRANTY
ii
1
2
3
5
7
13
15
26
31
32
33
1
General Information
4350-2113-00 (Rev. 09/06/04)

NVH-150-T / NVH-180-T / NVH-210-T / NVH-240-T
SPECIFICATIONS
NVH-150-T
Manually
adjusted angle,
tilt and offset
Cat. 1
iMatch Compatible
Formed steel
channel frame
½" x 6" reversible
360 Degrees
3, up to 53
degrees each
side
3, up to 53
degrees each
side
1/4"
60"
17"
Progressive-formed
Full bend
6" or 12" left or right
65HP (2WD)
60HP (4WD)
3, up to 22
degrees up
and down
392 lbs.
*Tecnomec Agricola, S.A. de C.V. reserves the right to make any changes deemed necessary to
the specifications without prior notice.
NVH-180-T
Manually
adjusted angle,
tilt and offset
Cat. 1
iMatch Compatible
Formed steel
channel frame
½" x 6" reversible
360 Degrees
3, up to 53
degrees each
side
3, up to 53
degrees each
side
1/4"
72"
17"
Progressive-formed
Full bend
6" or 12" left or right
65HP (2WD)
60HP (4WD)
3, up to 22
degrees up
and down
422 lbs.
NVH-210-T
Manually
adjusted angle,
tilt and offset
Cat. 1
iMatch Compatible
Formed steel
channel frame
½" x 6" reversible
360 Degrees
3, up to 53
degrees each
side
3, up to 53
degrees each
side
1/4"
84"
17"
Progressive-formed
Full bend
6" or 12" left or right
65HP (2WD)
60HP (4WD)
3, up to 22
degrees up
and down
448 lbs.
Models
Features & Specifications
Angle, tilt, & offset
Hitch compatibility
Frame
Cutting edge
Angle/Pivot
Angle-Forward
Angle-Reverse
Moldboard thickness
Moldboard length
Moldboard height
Moldboard type
Moldboard upper edge
Offset (or swing)
Tractor max. HP
Tilt
Operating weight
NVH-240-T
Manually
adjusted angle,
tilt and offset
Cat. 1
iMatch Compatible
Formed steel
channel frame
½" x 6" reversible
360 Degrees
3, up to 53
degrees each
side
3, up to 53
degrees each
side
1/4"
96"
17"
Progressive-formed
Full bend
6" or 12" left or right
65HP (2WD)
60HP (4WD)
3, up to 22
degrees up
and down
476 lbs.
1
General Information
4350-2113-00 (Rev. 09/06/04)

TRAINING
Safety instructions are important! Read all
attachment and power unit manuals; follow all
safety rules and safety decal information.
(Replacement manuals are available from your
dealer). Failure to follow instructions or safety
rules can result in serious injury or death.
If you do not understand any part of this manual
and need assistance, see your dealer.
Know your controls and how to stop engine and
attachment quickly in an emergency.
Operators must be instructed in and be capable
of the safe operation of the equipment, its
attachments, and all controls. Do not allow anyone
to operate this equipment without proper
instructions.
Never allow children or untrained persons to
operate equipment.
PREPARATION
Check that all hardware is properly installed.
Always tighten to torque chart specifications
unless instructed otherwise in this manual.
Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and head.
Make sure attachment is properly secured,
adjusted, and in good operating condition.
Power unit must be equipped with ROPS or
ROPS cab and seat belt. Keep seat belt securely
fastened. Falling off power unit can result in death
from being run over or crushed. Keep foldable
ROPS systems in “locked up” position at all times.
Make sure all safety decals are installed.
Replace if damaged. (See Safety & Instructional
Decals section for location).
A minimum 20% of tractor and equipment
weight must be on the tractor front wheels when
attachments are in transport position. Without this
weight, tractor could tip over, causing personal
injury or death. The weight may be attained with a
loader, front wheel weights, ballast in tires or front
tractor weights. Weigh the tractor and equipment.
Do not estimate.
OPERATION
Do not allow bystanders in the area when
operating, attaching, removing, assembling, or
servicing equipment.
Do not operate equipment while under the
influence of alcohol or drugs.
Operate only in daylight or good artificial light.
Keep hands, feet, hair, and clothing away from
equipment while engine is running. Stay clear of all
moving parts.
(Safety Rules continued on next page)
SAFETY RULES
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Safety is a primary concern in the design and
manufacture of our products. Unfortunately, our
efforts to provide safe equipment can be wiped
out by an operator’s single careless act.
In addition to the design and configuration of
equipment, hazard control and accident prevention
are dependent upon the awareness, concern,
judgement, and proper training of personnel
involved in the operation, transport, maintenance,
and storage of equipment.
It has been said “The best safety device is an
informed, careful operator.” We ask you to be that
kind of operator.
2
Specifications
4350-2113-00 (Rev. 09/06/04)

(Safety Rules continued from previous page)
Always comply with all state and local lighting and
marking requirements.
Never allow riders on power unit or attachment.
Power unit must be equipped with ROPS or ROPS
cab and seat belt. Keep seat belt securely fastened.
Falling off power unit can result in death from being
run over or crushed. Keep foldable ROPS systems in
“locked up” position at all times.
Always sit in power unit seat when operating
controls or starting engine. Securely fasten seat belt,
place transmission in neutral, engage brake, and
ensure all other controls are disengaged before
starting power unit engine.
Look down and to the rear and make sure area is
clear before operating in reverse.
Do not operate on steep slopes.
Do not stop, start, or change directions suddenly
on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
Stop power unit and equipment immediately upon
striking an obstruction. Turn off engine, remove key,
inspect, and repair any damage before resuming
operation.
Before changing positions of manual swing, tilt, or
angle positions:
Park tractor on level ground, apply parking
brake, level implement boom, shut off tractor, and
remove key.
Make manual changes slowly and carefully to
prevent hazardous movement of mechanisms.
Never stand in positions where you could become
entrapped during adjustment changes or if the
3-point hitch suddenly lowers.
Always secure lock pins with safety pins to prevent
lock pins from bumping out of the positioning holes.
Failure to do so may result in accidents and/or
damage to rear blade.
Before dismounting power unit or performing any
service or maintenance, follow these steps: disengage
power to equipment, lower the 3-point hitch and all
raised components to the ground, operate valve levers
to release any hydraulic pressure, set parking brake,
stop engine, remove key, and unfasten seat belt.
SAFETY RULES
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Before working underneath, read manual
instructions, securely block up, and check stability.
Secure blocking prevents equipment from dropping
due to hydraulic leak down, hydraulic system failure, or
mechanical component failure.
MAINTENANCE
Before dismounting power unit or performing any
service or maintenance, follow these steps: disengage
power to equipment, lower the 3-point hitch and all
raised components to the ground, operate valve levers
to release any hydraulic pressure, set parking brake,
stop engine, remove key, and unfasten seat belt.
Before performing any service or maintenance,
lower attachment to ground, turn off engine, set
parking brake, and remove key.
Before working underneath, read manual
instructions, securely block up, and check stability.
Secure blocking prevents equipment from dropping
due to hydraulic leak down, hydraulic system failure, or
mechanical component failure.
Always wear relatively tight and belted clothing to
avoid entanglement in moving parts. Wear sturdy,
rough-soled work shoes and protective equipment for
eyes, hair, hands, hearing, and head.
Do not modify or alter or permit anyone else to
modify or alter the equipment or any of its components
in any way.
Make sure attachment is properly secured, adjusted,
and in good operating condition.
Never perform service or maintenance with engine
running.
Keep all persons away from operator control area
while performing adjustments, service, or maintenance.
Tighten all bolts, nuts and screws to torque chart
specifications. Check that all cotter pins are installed
securely to ensure equipment is in a safe condition
before putting unit into service.
Make sure all safety decals are installed. Replace if
damaged. (See Safety & Instructional Decals section
for location).
STORAGE
Secure equipment parking stand(s) in park position
before detaching.
Keep children and bystanders away from storage
area.
4
Safety Rules
4350-2113-00 (Rev. 09/06/04)

SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
RB082
2
1
7
6
8
5
9
6
3
4
5
Safety Decals
1 - Serial Number Plate (1)
MODELO / MODEL
www.bison.com.mx
NUMERO DE SERIE / SERIAL NUMBER
HECHO EN MEXICO
TECNOMEC AGRICOLA
®

SAFETY & INSTRUCTIONAL DECALS
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
Replace Immediately If Damaged!
Read Operator's Manual
before operating, servicing,
or repairing equipment.
Follow all safety rules and
instructions. (Manuals are
available from your selling
dealer.)
Never allow riders.
Keep bystanders away from
equipment during operation.
Operate from tractor seat
only.
Keep all shields in place and
in good condition.
Lower equipment to ground,
stop engine, remove key,
and set brake before
dismounting tractor.
Never allow children or
untrained persons to
operate equipment.
TO AVOID SERIOUS
INJURY OR DEATH:
FAILURE TO FOLLOW THESE
INSTRUCTIONS CAN RESULT
IN INJURY OR DEATH. 1003199
WARNING WARNING
FALLING OFF
CAN RESULT IN
BEING RUN OVER
Tractor must be equipped
with ROPS (or ROPS CAB)
and seat belt. Keep foldable
ROPS systems in "locked
up" position at all times.
Buckle Up! Keep seat belt
securely fastened.
Allow no riders.
RAISED IMPLEMENT
CAN DROP AND CRUSH.
Never go underneath raised
implement which can drop
from equipment or tractor
3-point hitch hydraulic leak
down, hydraulic system
failures, movement of
control levers, or
mechanical linkage failures.
Service work does not
require going underneath
implement. Read manual
instructions.
55121-C
FALLING OFF OR GOING
UNDERNEATH IMPLEMENT
CAN RESULT IN SERIOUS
INJURY OR DEATH.
CRUSHING AND
PINCHING HAZARD
Be extremely careful
handling various parts of the
hitching mechanism. They
are heavy and hands,
fingers, feet, and other body
parts could be crushed or
pinched between tractor and
implement.
Operate tractor controls from
tractor seat only.
Do not stand between tractor
and implement when tractor
is in gear.
Make sure parking brake is
engaged before going
between tractor and
implement.
Stand clear of machine while
in operation or when it is
being raised or lowered.
FAILURE TO FOLLOW THESE
INSTRUCTIONS COULD
RESULT IN SERIOUS INJURY
OR DEATH. 1002941
WARNING
WARNING
Unit must not extend
more than 4 feet left of
center of the tractor when
driving on public roads.
2.- TA4310-7071-00 (1) 4.- TA4310-7073-00 (1)
5.- TA4310-7074-00 (1)
3.- TA4310-7072-00 (1)
6.- TA4310-6020-01 Red Reflector 2’’ x 9’’ (2)
7.- TA4310-6020-02 Yellow Reflector 2’’ x 9’’ (1)
8.- TA4310-1102-03 decal (1)
9.- Model decal (1)
VH
BISON
6
Safety Decals
4350-2113-00 (Rev. 09/06/04)

OPERATION
Safety is a primary concern in the design and
manufacture of our products. Unfortunately, our
efforts to provide safe equipment can be wiped
In addition to the design and configuration of
equipment, hazard control and accident prevention
are dependent upon the awareness, concern,
judgement, and proper training of personnel
involved in the operation, transport, maintenance,
It has been said “The best safety device is an
informed, careful operator.” We ask you to be that
kind of operator.
and storage of equipment.
out by an operator’s single careless act.
Never allow children or untrained persons to
operate equipment.
Do not allow bystanders in the area when
operating, attaching, removing, assembling, or
servicing equipment.
Before working underneath, read manual
instructions, securely block up, and check stability.
Secure blocking prevents equipment from
dropping due to hydraulic leak down, hydraulic
system failure, or mechanical component failure.
Never allow riders on power unit or attachment.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
A minimum 20% of tractor and equipment weight
must be on the tractor front wheels when
attachments are in transport position. Without this
weight, tractor could tip over, causing personal
injury or death. The weight may be attained with a
loader, front wheel weights, ballast in tires, or front
tractor weights. Weigh the tractor and equipment.
Do not estimate.
Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear sturdy,
rough-soled work shoes and protective equipment
for eyes, hair, hands, hearing, and head.
WARNING
WARNING
CAUTION
7
Operation

Operation Cont´d
Figure 1. 3-point Hitch Connection
RB083
17
6
24
17
25
1
5
5
8
Operation
4350-2113-00 (Rev. 09/06/04)
MOUNT REAR BLADE TO TRACTOR
IMPORTANT
The rear blade should be mounted on tractors
with a maximum power rating of 65 hp (48 kW). For
4WD tractors, the maximum power rating is 60 hp
(45 kW).
The rear blade is a 3-point Category 1 implement. It will
attach to ASAE standard Category 1 quick-attaching
coupler.
Place the tractor rockshift control in “position control”
(non-floating) for attaching and detaching the rear
mounted blade. “Draft control” or “position control” can
be used while operating.
Back the tractor until the ends of the lift arms can be
attached to the lift points on the implement. Secure the
lift arms to the mast.
Attach the center link to the top of the mast and adjust
so that the rear blade will be level in the operating
position.
CATEGORY 1
1. Place the lift arms around the lower hitch pins (5).
Secure with klik pin (17).
2. Connect the tractor top link to upper hitch support hole
of the 3-point hitch mast (25) using the upper hitch pin
category 1 (6). Secure with the 1/8 safety pin (24).
3. Level the main frame by adjusting lift and top links.
4. Position sway blocks to eliminate side sway or install
sway braces if required.
CATEGORY 1 QUICK-HITCH
1. Insert 1 7/16 O.D. lower hitch pin bushings* around
the lower hitch pins (5). Secure with klik pins (17).
2. Place upper hitch pin category 1 (6) and 1 1/4 O.D.
upper hitch pin bushing* category 1 in the lower hitch
support hole of the 3-point hitch mast (25) and secure
with the 1/8 safety pin (24).
3. Back up tractor with 3 quick-hitch attachment into
3-point hitch mast (25) making sure pins are aligned to
the center and the outside lower hitch supports.
4. Lift tractor lift arms.
5. Level the main frame by adjusting lift and top links.
6. Position sway blocks to eliminate side sway or install
sway braces if required.
*NOTE: The upper and lower hitch pin bushings are not
included with rear blade.
NOTE: The drawbar may have to be removed on some
tractors. Make sure rear blade is at least six inches from
tractor tires, throughout operating range of 3-point hitch.

Before changing positions of manual swing,
tilt, or angle positions:
• Park tractor on level ground, apply parking
brake, level implement boom, shut off tractor,
and remove key.
• Make manual changes slowly and carefully
to prevent hazardous movement of mechanisms.
• Never stand in positions where you could
become entrapped during adjustment changes
or if the 3-point hitch suddenly lowers.
Operation Cont´d
Angle Adjustment
Mechanical Adjustment
Insert the turn table pin (7) using the various hole
combinations between the offset plate assembly and
the turn table holes to achieve angle positions up to 53
degrees each side. Secure turn table pin (7) with safety
pin (24).
Always secure lock pins with safety pins to
prevent lock pins from bumping out of the
positioning holes. Failure to do so may result in
accidents and/or damage to rear blade.
Figure 2. Turn Table Pin
CAUTIONCAUTION
RB084
24
7
9
Operation
4350-2113-00 (Rev. 09/06/04)

Operation Cont´d
Tilt Adjustment
Mechanical Adjustment
turn table
NOTE: In some cases it may not be possible to fully tilt and
angle and still be able to raise the blade high enough to
clear the ground. In this case, use less tilt.
NOTE: It is possible for the blade to contact other
components if the blade is tilted when angled. Operate
blade slowly when angling it.
Insert the upper pin (8) using the various hole
combinations between the main frame and the turn table
holes to achieve angle tilt positions up to 22 degrees up and
down.
Reverse Blade
The blade is reversible without removing it from the tractor.
Mechanical Adjustment
1. Remove turn table pin (7) and safety pin (24).
2. Rotate moldboard counter-clockwise 180 degrees (viewed
from the top).
3. Insert the turn table pin (7) using the various hole
combinations between the offset plate assembly and the turn
table holes to achieve angle positions up to 53 degrees each
side. Secure turn table pin (7) and safety pin (24).
Figure 4. Upper T Pinurn Table
Figure 3. Reverse Blade
RB086
RB085
24
7
8
24
10
Operation
4350-2113-00 (Rev. 09/06/04)

Operation Cont´d
11
Operation
4350-2113-00 (Rev. 09/06/04)
Offset Adjustment
Mechanical Adjustment
Mechanical adjustment model has five blade offset positions.
Hole position combinations between the offset plate
assembly (3) and the moldboard (4) allow moldboard to
offset to the right or left with a maximum blade offset of 12
inches to either side.
To offset the blade:
1. Park the tractor on level ground.
2. Apply parking brake.
3. Shut off the engine.
4. Disassemble the moldboard (4) from the offset plate
assembly (3) by removing the four bolts (19), four hex nuts
(27), four lock washers (26) and the two flat washers (20).
5. Place the moldboard (4) to the desired position, right or
left. Make sure the holes between offset plate assembly
(3) and moldboard (4) are aligned.
6. Secure moldboard with the four bolts (19), four hex nuts
(27), four lock washers (26) and the two flat washers (20).
Figure 5. Mechanical Offset
4
20
27 27
27
26
26
26
27
20
3
19
19
19
RB087
26

Operation Cont´d
OPERATING TIPS
Look down and to the rear and make sure area
is clear before operating in reverse.
Do not operate on steep slopes.
Do not operate while the parking stand is in the
down position.
Do not stop, start, or change directions
suddenly on slopes.
Use extreme care and reduce ground speed on
slopes and rough terrain.
Watch for hidden hazards on the terrain during
operation.
Before working underneath, read manual
instructions, securely block up, and check
stability. Secure blocking prevents equipment
from dropping due to hydraulic leak down,
hydraulic system failure, or mechanical
component failure.
PRE-OPERATION CHECK LIST
(OPERATOR’S RESPONSIBILITY)
Review and follow all safety rules and safety
decal instructions on pages 3 through 6.
Check that equipment is properly and securely
attached to tractor.
Check that all safety decals are installed and in
good condition. Replace if damaged.
Check that all hardware and cotter pins are
properly installed and secured.
BACKFILLING
For backfilling ditches or trenches, reverse the blade
by rotating counter-clockwise and back push.
Stop power unit and equipment immediately
upon striking an obstruction. Turn off engine,
remove key, inspect, and repair any damage
before resuming operation.
LEVELING AND GRADING
Set the blade to the desired position of offset, angle,
and tilt for leveling and grading.
PRE-OPERATION CHECK LIST
(OPERATOR’S RESPONSIBILITY)
Check all lubrication points are greased.
Check that blade cutting edge is in good condition.
CAUTION
WARNING
12
Operation
4350-2113-00 (Rev. 09/06/04)

OWNER SERVICE
Safety is a primary concern in the design and
manufacture of our products. Unfortunately, our
efforts to provide safe equipment can be wiped
In addition to the design and configuration of
equipment, hazard control and accident prevention
are dependent upon the awareness, concern,
judgement, and proper training of personnel
involved in the operation, transport, maintenance,
It has been said “The best safety device is an
informed, careful operator.” We ask you to be that
kind of operator.
and storage of equipment.
out by an operator’s single careless act.
Before working underneath, read manual
instructions, securely block up, and check
stability. Secure blocking prevents equipment from
dropping due to hydraulic leak down, hydraulic
system failure, or mechanical component failure.
Never perform service or maintenance with
engine running.
Always wear relatively tight and belted clothing
to avoid entanglement in moving parts. Wear
sturdy, rough-soled work shoes and protective
equipment for eyes, hair, hands, hearing, and
head.
Before dismounting power unit or performing
any service or maintenance, follow these steps:
disengage power to equipment, lower the 3-point
hitch and all raised components to the ground,
operate valve levers to release any hydraulic
pressure, set parking brake, stop engine, remove
key, and unfasten seat belt.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
CAUTION
WARNING
WARNING
13
Ower Service
4350-2113-00 (Rev. 09/06/04)

Owner Service Cont´d
Blade Cutting Edge
To reverse the cutting edge
1. Remove the 5/8 plow bolts.
2. Remove the cutting edge from the moldboard and
reinstall with the sharp edge down.
3. Replace cutting edge when both edges are worn.
Lubrication
Monthly
1. Lubricate between turn table (2) and offset plate assembly (3).
Bolts
1. Check bolts periodically to be sure they are tight.
2. Replace bolts as needed.
NOTE: Replacement bolts must have the same
strength markings on the heads. Refer to Bolt Torque
Chart on page 31.
Figure 7. Lubrication Points
RB088
2
3
14
Ower Service
4350-2113-00 (Rev. 09/06/04)

Before dismounting power unit or performing
any service or maintenance, follow these steps:
disengage power to equipment, lower the 3-point
hitch and all raised components to the ground,
operate valve levers to release any hydraulic
pressure, set parking brake, stop engine, remove
key, and unfasten seat belt.
Before working underneath, read manual
instructions, securely block up, and check stability.
Secure blocking prevents equipment from
dropping due to hydraulic leak down, hydraulic
system failure, or mechanical component failure.
Keep all persons away from operator control
area while performing adjustments, service, or
maintenance.
Always wear relatively tight and belted clothing to
avoid entanglement in moving parts. Wear sturdy,
rough-soled work shoes and protective equipment
for eyes, hair, hands, hearing, and head.
Tighten all bolts, nuts and screws to torque chart
specifications. Check that all safety and cotter pins
are installed securely to ensure equipment is in a
safe condition before putting unit into service.
Dealer Set-Up Instructions
Assembly of this equipment is the responsibility of the
VH
BISON dealer. It should be delivered to the owner
completely assembled, lubricated, and adjusted for
normal operating conditions. Assembly will be easier if
components are aligned and loosely assembled before
tightening hardware. Recommended torque values for
hardware are located on page 31.
ASSEMBLY
WARNING CAUTION
MAIN ASSEMBLY
END PLATES C6200001 ASSEMBLY (OPTIONAL)
SKID SHOES C6100001 ASSEMBLY (OPTIONAL)
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21
22
ASSEMBLY TABLE OF CONTENTS
15
Assembly

Assembly Cont´d
DANGER OF CUTTING EDGE FALLING
It could cause serious injuries or even death.
Keep hands and feet out of cutting edge while
it is up.
MAIN ASSEMBLY
These instructions illustrate the sequence of
assembling the parts of the rear blade. We suggest
that you follow this sequence carefully. Assembly of
the rear blade should be done with no less than two
people and the appropriate equipment for making
assembling easier.
The following tools are necessary for assembling
your rear blade:
Two adjustable wrenches or:
One adjustable wrench and:
One 9/16 wrench or 9/16 rachet
One 15/16 wrench or 15/16 rachet
One 1/2 wrench or 1/2 rachet
One 1 1/8 wrench or 1 1/8 rachet
One 1 1/2 wrench or 1 1/2 rachet
One 2 1/2 wrench or 2 1/2 rachet
One rubber mallet
In some cases, it is necessary to make use of a steel
mallet at the time you install the pins. In these cases,
we suggest that a piece of wood be used to soften
the impact between the pin and mallet to avoid
damaging the pin.
DANGER OF BRUISING
Be careful with the pieces joined by pins since they
tend to rotate.
WARNING WARNING
16
Assembly
4350-2113-00 (Rev. 09/06/04)

17
Assembly
4350-2113-00 (Rev. 09/06/04)
Figure 8. Turn Table Installed to Main Frame
Remove Parts from Crate
NOTE: The shipping crate base can be used to aid in the
assembly of the rear blade.
1. Remove top and sides from crate.
2. Remove box of parts and mechanical linkages from
base.
Attach Main Frame to Turn Table and King Pin
A. Attach the turn table (2) to the main frame (1) by
inserting the lower turn table pin (9) through the king pin
(10). Secure with two bolts (13), two hex nuts (15), and two
lock washers (14).
NOTE: Prop the main frame (1) upright as shown
before assembling turn table (2). Use a fork-lift or a crane
for easier assembly.
NOTE: Remove paint from the lower turn table pin (9) and
the inside of the turn table (2) and main frame (1) holes
where the lower turn table pin (9) goes through if necessary.
Apply grease to all contact surfaces to facilitate assembly, if
necessary.
Upper Turn Table Pin Installation
Tilt the turn table (2) to one of the different positions
available keeping the main frame (1) in an upright position.
Secure with upper turn table pin (8) and safety pin (24)
through the holes in the turn table (2) and the main frame
(1).
B.
Assembly Cont´d
RB089
1.
2.
8.
9.
10.
13.
14.
15.
24.
Main Frame
Turn Table
Upper Turn Table Pin
Lower Turn Table Pin
King Pin
Bolt, 3/8 x 2 HHCS
Lock Washer, 3/8
Hex Nut, 3/8
Safety Pin, 1/8
Figure 9. Upper Turn Table Pin Installation
RB090
14 15
9
13
10
14
2
1
1
8
24
2

Assembly Cont´d
18
Assembly
4350-2113-00 (Rev. 09/06/04)
Assembly Cont´d
Turn Table Pin Installation
the offset plate assembly (3) to one of the
seven positions available. Secure with turn table pin
(7) and safety pin (24) through the holes in the turn
table (2) and the offset plate assembly (3).
D. Angle
2.
3.
7.
24.
Turn Table
Offset Plate Assembly
Turn Table Pin
Safety Pin, 1/8
Figure 11. Turn Table Pin Installation
RB092
Attach Turn Table to Moldboard
C. Secure king pin (10) to the moldboard (4) by using
the king pin cap (21) and castle nut (22). Secure using
cotter pin (16).
NOTE: Remove paint from the moldboard (4) hole
where the king pin (10) goes through if necessary.
Apply grease to all contact surfaces to facilitate
assembly.
Figure 10. Main Frame and Turn Table
Installed to Moldboard
Moldboard
King Pin
Cotter Pin, 5/16 x 3
King Pin Cap
Castle Nut, 1 1/2
4.
10.
16.
21.
22.
RB091
22
21
16
4
10
2
24
7
3