Buhler FK348 User Manual
Commercial Snowblower
TABLE OF CONTENTS
DESCRIPTION PAGE
WARRANTY................................................................ 1
INTRODUCTION ......................................................... 2
SAFETY....................................................................... 3
Safety................................................................ 3
General Safety .................................................. 4
Start Up Safety.................................................. 4
Operation Safety ............................................... 5
Transport Safety................................................ 5
Service & Maintenance Safety .......................... 5
Storage Safety .................................................. 6
Safety Signs...................................................... 6
Safety Sign Installation...................................... 6
ASSEMBLY
Assembly Instructions ....................................... 8
START UP................................................................... 11
OPERATION ............................................................... 12
Theory of Operation .......................................... 12
Operating Instructions ....................................... 13
Specifications .................................................... 15
Hydraulic Control Block Drawing & Parts List.... 16
MAINTENANCE ..........................................................17
Hydraulic Snowblower Wiring Schematic.......... 17
Troubleshooting ................................................ 18
Bolt Torque
PARTS LISTS
Hydraulic – 22” Housing Drawings .................... 20
Hydraulic – 22” Housing Parts List .................... 22
Hydraulic – 24” Housing Drawings .................... 25
Hydraulic – 24” Housing Parts List .................... 27
Snowblower Assembly Drawing ........................ 29
Snowblower Assembly Parts List ...................... 30
PTO Series – 24” Housing Drawings ................ 31
PTO Series – 24” Housing Parts List ................ 33
PTO Drive PTO Drawing & Parts List................ 35
Cylinder Drawings & Parts Lists ........................ 36
PTO Drive – Gearbox Drawing & Parts List ...... 37
SHIPPING KIT AND BUNDLE NUMBERS ................. 38
Commercial Snowblower
WARRANTY POLICY
Buhler Manufacturing products are warranted for a period of twelve (12) months (90 days for
commercial application) from original date of purchase, by original purchaser, to be free from
defects in material and workmanship under correct, normal agricultural use and proper
applications.
Buhler Manufacturing’s obligations under this warranty shall be limited to the repair or
exchange, at Buhler Manufacturing’s option, of any Buhler Manufacturing product or part which
proves to be defective as provided. Buhler Manufacturing reserves the right to either inspect
the product at the buyer’s location or have it returned to the factory for inspection.
The above warranty does not extend to goods damaged or subject to accident, abuse or misuse
after shipment from Buhler Manufacturing’s factory, nor to goods altered or repaired by anyone
other than an authorized Buhler Manufacturing representative.
Buhler Manufacturing makes no Express Warranties other than those, which are specifically
described. Any description of goods, including any references and specifications in catalogues,
circulars and other written material published, is for the sole purpose of identifying goods and
shall conform to such descriptions. Any sample or model is for illustrative purposes only and
does not create an Express Warranty that the goods conform to sample or model shown.
The purchaser is solely responsible for determining suitability of goods sold. This warranty is
expressly in lieu of all other warranties expressed or implied. Buhler Manufacturing will in no
event be liable for any incidental or consequential damages whatsoever. Nor for any sum in
excess of the price received for the goods for which liability is claimed.
WARRANTY CLAIMS:
Warranty requests must be prepared on Buhler Manufacturing Warranty Claim Forms with all
requested information properly completed. Warranty Claims must be submitted within a thirty
(30) day period from date of failure repair.
WARRANTY LABOR:
Any labor subject to warranty must be authorized by Buhler Manufacturing. The labor rate for
replacing defective parts, where applicable, will be credited at 100% of the dealer’s posted shop
rate. Defective parts will receive an extra 10% discount to assist with freight or other incidental
costs.
GOVERNMENT LEGISLATION:
Warranty terms and conditions are subject to Provincial or State legislation.
IMPORTANT FACTS:
Buckets and Bucket Tines Carry No Warranty
Bent Spears Carry No Warranty
Snowblower Fan Shafts Carry No Warranty
Mower Blades Carry No Warranty
Portable Auger Parts Have Two (2) Year Warranty
Loader Parts Have Two (2) Year Warranty
IMPORTANT NOTE: This warranty does not apply to rentals
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Commercial Snowblower
INTRODUCTION
For more than a generation, Buhler has been building the most popular Snowblowers
used on farms, airports, and municipalities throughout the North American snow-belt.
Now, all that experience brings you the rugged commercial blowers to handle more
demanding snow clearing jobs.
These hydraulically driven blowers are offered in 60”, 66”, 74” and 84” sizes and four
series. Oil flow ranges from 13 to 32 gallon per minute, with 2000 P.S.I. to ensure there
is a model to match the horsepower of your machine. A hydraulic motor engages a
direct ring gear for smooth, positive rotation of the chute.
The Buhler Commercial Blower is totally operated by hydraulics – fan, auger, chute
rotator and deflector. The key to efficient snow blowing is the design of the fan and
housing. Four blades with tight clearance at the circumference and a replaceable
UHMW liner makes this an excellent design. The heart and soul of these hydraulic
Snowblower is the load sensing manifold which keeps all four functions operating
efficiently, even as the snow gets deeper and more packed. One set of remotes is all
you need. Adjustment ports allow you to fine tune the flow and route of oil to ensure
that the primary oil supply goes to the fan and auger, secondarily to the chute rotator
and deflector. A cushioning feature in the valve body softens the speed of the rotation
when it reaches the end of its rotating arc. The remote in-cab control allows the
operator to divert oil flow to the chute controls. This 3-point hitch, TO driven blower is
build with the same durable strength and features of the front mounted hydraulic models
shown here. Equipped with the same chute rotator as the hydraulically driven models, it
also features a telescopic hitch, replaceable cutting edge, adjustable skid shoes, 4
blade fan, and replaceable UHMW poly liner in the fan housing and spout.
Keep this manual handy for frequent reference. All new operators or owners must
review the manual before using the equipment and at least annually thereafter. Contact
your Buhler Dealer if you need assistance, information, or additional copies of the
manual. Visit our website at www.buhler.com for a complete list of dealers in your area.
The directions left, right, front and rear, as mentioned throughout this manual, are as
seen facing in the direction of travel of the implement.
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Commercial Snowblower
SAFETY
Remember, YOU are the key to safety. Good safety practices not only protect you, but
also the people around you. Make these practices a working part of your safety
program. Be certain that everyone operating this equipment is familiar with the
recommended operating and maintenance procedures and follows all the safety
precautions. Most accidents can be prevented. Do not risk injury or death by ignoring
good safety practices.
The alert symbol is used throughout this manual. It indicates attention is required and
identifies hazards. Follow the recommended precautions.
The safety alert symbol means…
ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
CAUTION
The caution symbol indicates a potentially hazardous situation that, if not avoided, may
result in minor or moderate injury. It may also be used to alert against unsafe practices.
WARNING
The Warning Symbol 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. It may also be used to alert against unsafe practices.
DANGER
The Danger Symbol indicates an imminently hazardous situation that, if not avoided will
result in death or serious injury. This signal word is to be limited to the most extreme
situations, typically for machine components that, for functional purposes, cannot be
guarded.
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Commercial Snowblower
GENERAL SAFETY INSTRUCTIONS
Have a first-aid kit available for use and know how to use it.
Have a fire extinguisher available, stored in a highly visible location, and know how to
use it.
Wear appropriate protective gear. This list may include but is not limited to:
- Hard hat
- Protective shoes with slip resistant soles
- Protective glasses or goggles
- Heavy gloves
- Wet weather gear
- Hearing protection
- Respirator or filter mask
Read and understand the Operator’s Manual and all safety signs before operating,
servicing, adjusting, repairing, or unplugging the equipment.
Do not attempt any unauthorized modifications to your Buhler product as this could
affect function or safety, and could affect the life of the equipment.
Never start or operate the Snowblower except from the operator’s station on the power
unit.
Inspect and clean the working area before operating.
Keep hands, feet, clothing, and hair away from moving parts.
Ensure bystanders are clear of the area before operating.
START UP SAFETY
Do not let inexperienced operators or children run this equipment.
Place all tractor and machine controls in neutral before starting.
Operate only with ROPS and seatbelt equipped tractors.
Do not operate inside a building unless there is adequate ventilation.
Ensure all shields are in place and in good condition before operating.
Stay clear of PTO shaft and machine when engaging PTO.
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Commercial Snowblower
OPERATION SAFETY
Do not permit riders.
Do not wear loose fitting clothing during operation.
Stay clear of Snowblower augers.
Stay clear of Snowblower discharge chute. Rocks or debris can be picked up and
thrown.
TRANSPORT SAFETY
Review Transport Safety instructions in tractor manual before moving.
Check with local authorities regarding transport on public roads. Obey all applicable
laws and regulations.
Make sure the SMV (Slow Moving Vehicle) emblem and all the lights and reflectors that
are required by the local highway and transport authorities are in place, are clean, and
can be seen clearly by all overtaking and oncoming traffic.
Never have the equipment in operation during transport.
Always travel at a safe speed.
SERVICE AND MAINTENANCE SAFETY
Stop engine, set brake, remove ignition key, and wait for all moving parts to stop before
servicing, adjusting, repairing, or unplugging.
Support the equipment with blocks or safety stands before working beneath it.
Follow good shop practices including
- Keep service area clean and dry
- Be sure electrical outlets and tools are properly grounded
- Use adequate light for the job
Use only tools, jacks, and hoists of sufficient capacity for the job.
Replace and secure all shields removed during servicing before operating.
Use heavy leather gloves to handle sharp objects.
Check hydraulics regularly for leaks. Use cardboard to look for leaks, and use hand and
eye protection.
Relieve pressure on hydraulic system before repairing or adjusting.
Failure to follow proper procedures when mounting a tire on a wheel or rim can produce
an explosion, which may result in serious injury or death.
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Commercial Snowblower
STORAGE SAFETY
Store the unit in an area away from human activity.
Do not permit children to play on or around the stored machine.
Support the frame on stands and blocks to provide a secure base.
SAFETY SIGNS
The following illustration shows the approximate location and detail of safety signs.
Keep all safety signs clean and legible and replace any that are damaged or missing.
When original parts are replaced, any safety signs affixed to those parts should be
replaced as well. Replacement safety signs are available from your local dealer.
INSTALLATION
To install safety signs, ensure the installation area is clean and dry. Decide on the exact
position before you remove the backing paper. Remove the smallest portion of the split
backing paper and align over the specified area. Carefully press in place. Slowly peel
back the remaining paper and smooth the remaining portion in place. Small air pockets
can be pierced with a pin and smoothed out.
PTO Drive
Hydraulic Drive
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Commercial Snowblower
SAFETY SIGNS
#1
#3
#3
Replace safety signs
immediately should they
become damaged, torn or
illegible. Obtain replacements
from your authorized dealer
using the part numbers shown.
#4
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Commercial Snowblower
ASSEMBLY INSTRUCTIONS
1. SPOUT ASSEMBLY FOR ALL SNOWBLOWERS: Remove two of the
grooved spout rollers to mount the discharge spout. Replace the two rollers
to hold spout in place. Install the 2 ½” x 8” cylinder on the spout using the
pins supplied.
2. HYDRAULIC DRIVE: (Page 29 & 30) The 80” long hydraulic lines (#14) for
the spout deflector cylinder should be connected to the two ports on the
hydraulic block labeled C1 and C2 (see Page 16 for block drawing). The 30”
long lines (#15) from the spout control motor connect to the two ports labeled
M1 and M2 on the hydraulic block. The ¾” diam. x 84” main
lines (#21) connect to the implement. NOTE: The customer must supply the
appropriate tips to connect the main lines to the implement. A two-piece
wiring harness is supplied with all hydraulic snowblowers. The 45” part of the
harness (#6) is mounted on the snowblower. One end of this wire connects
to the control block. The plug end mounts on a bracket welded to the top
edge of the quick hitch. The 155” part (#1) of the harness with the switch is
connected to the plug on the harness mounted on the snowblower. A switch
mounted in the cab controls the spout and the deflector. The alligator clips
attach to the battery which acts as a power source. A schematic of the wiring
harness is included in this manual. (See page 17)
3. PTO DRIVE: (Page 31-34)
1. Slide the two hitch adaptor weldments (#17) into the sleeves on the body.
These tubes are adjustable to three different positions. The correct position
for each individual tractor will be determined when mounting the snowblower
on the tractor (see section on mounting blower on tractor). Start with the
tubes pulled out to the last hole. Connect to the snowblower using pins (#71)
and lynch pins (#73).
Mount the hitch Weldment (#7) to the body. The top arm of the hitch bolts on
top of the bracket on the body using a ¾” x 1 5/8” bolt, lock washer and hex
nut. The bottom of the hitch bolts to the outside of the two hitch adaptors
using 5/8” x 1 ¾” hex bolts, flat washers, lock washers and hex nuts.
2. Connect two 108” hoses (#76) to the hydraulic spout control motor and
two 108” hoses (#76) to the cylinder on the discharge spout. Connect these
hoses to the tractor after mounting the snowblower on the tractor.
3. Mounting blower on tractor:
a) The pins supplied with the snowblower are for a category 2 quick
hitch. The quick coupling hitch has two holes both at the top of the
hitch and at each lift arm. When using a quick coupler, the pins
must be in the inside set of holes. Use the outside set of holes
with a standard three-point hitch.
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Commercial Snowblower
ASSEMBLY INSTRUCTIONS – cont’d.
b) Using tape or a bright colored marking pen, mark on the outer
shields the position where the shaft is completely pushed together
and the position where you have a 4” overlap. Watch these marks
when moving the blower through all possible operating angles to
see that the PTO shaft stays within this range.
c) With the engine on the tractor shut off, attach the PTO shaft. The
tractor end has a standard 6-spline end with a spring loaded locking
collar. The snowblower end has a clamp-style yoke with a 3/8” key
way. Slide the yoke onto the gearbox shaft with the 3/8” key (#67)
supplied. Lock the yoke in place with the ½” x 3” bolt (#39) and
lock nut (#40) fitted through the groove in the gearbox shaft. After
tightening the bolt, insert and tighten the 3/8” socket set screw
(#74) supplied.
Caution: Always check to see that both ends of the PTO shaft are securely
attached every time the Snowblower is used. This should always
be done with the tractor engine off.
d) Check that the PTO shaft does not bottom or separate with the
blower in the extreme high and low positions. A longer optional
PTO shaft is available if the standard shaft is too short. Check for
free movement of all parts in various raised positions; particularly
the PTO shaft.
e) NOTE: Excessive U-joint wear and shear pin failure may result if
the tractor PTO angle exceeds 20º. The drawing below gives an
approximate way to check this angle. With the PTO half extended,
the tractor output should not be over 32 inches high. Use 34 inches
if the PTO is nearly compressed.
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Commercial Snowblower
ASSEMBLY INSTRUCTIONS – cont’d.
4. PTO SHIELD: All PTO snowblowers are supplied with a PTO shield
(#18). To install, remove the two rear bolts at the top of the gearbox
(#34). Bolt the PTO shield to the gearbox by the hinges using these same
bolts. A utility spring (#68) keeps the shield in place. Hook one end of the
spring in the hole in the shield and the other end to the hole in the brace
under the gearbox.
CAUTION: Do not run the snowblower without this shield in place.
REFILLING GEARBOX WITH OIL: If the gearbox requires refilling with oil
because of repairs to the gearbox, add oil to the level shown in drawing.
Check the level regularly using the plug in the lid. The correct level is
even with the bottom of the plug.
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Commercial Snowblower
START UP
HYDRAULIC CONTROL BLOCK
NON-STALLING-FAN FEATURE:
The Hydraulic Snowblower has a unique modulating element that keeps the blower fan
from stalling in an overloaded condition. This is accomplished by starving the hydraulic
flow to the front auger motor (which then stops feeding the fan) and diverts all of the
flow (and energy) to the main fan motor. As the fan clears itself, and the pressure
drops, the auger again begins feeding according to load. When the system is set up
properly the fan motor should not stall or plug up.
MODULATING ELEMENT SETUP:
For optimum performance the modulating element (#4) (page 16) must be adjusted to
match the system pressure of the tractor being used. The factory setting is for a 28003000 psi system. If your system is less, you should make adjustments accordingly. For
adjustment:
Loosen the LOCK NUT (on the MODULATING VALVE (#4) (page 16) and back
off the adjusting screw till the screw turns freely by hand, and then turn it in till
you feel the screw making contact with the pressure spring. One turn sets the
pressure up by about 600 psi.
For 2100 psi turn the screw in 3 ½ turns.
For 2400 psi, turn in 4 turns
For 2700 psi, turn in 4 ½ turns
For 3000 psi, turn in 5 turns.
If the fan stalls (in an over load condition), the (#4) (page 16) element is set too high. If
the Auger slows and stops too soon, it is set too low. Once it is set it should not need to
be adjusted any more.
Since there are a number of unknown variables that are unique to almost every
situation, it is difficult to give an exact setting for a particular model. The variables are:
hose size and length, type and size of quick couplers, etc.
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