Kubota K4080 Bedienungsanleitung

OPERATOR’S MANUAL

PLEASE READ THIS MANUAL CAREFULLY AND KEEP

READY AT ALL TIMES

KUBOTA®

BRUSH MOWER

MODEL K4080

BEFORE OPERATION ——————————————————————— 1

SAFE OPERATION —-——————————————————————— 2-3

ATTACHING TO THE EXCAVATOR —-———————————————— 4-5

ADJUSTMENT & MAINTENANCE —————————————————— 6

BASIC OPERATIONS —-———————-—————————————— 7-9

MAINTENANCE ——————————————————————————10

REPLACING KNIVES——–————————————————————— 11

HYDRAULIC DIAGRAM ———–—–————–--———————————— 12

ATTACHMENT TRANSPORT -—————————————————–—— 13

TROUBLESHOOTING ———————————–—————————–——14

TROUBLESHOOTING (cont.) —————————-——————-———— 15

SPECIFICATIONS -–————————————–——————————— 16

KNIFE ASSEMBLY —————————————–——————————— 17

DRIVE ASSEMBLY ——————————————–—————————— 18

HYDRAULIC PLUMBING———————————–——————————–-19

CONTENTS

BEFORE OPERATION 1

BEFORE OPERATION

1. Keep children out of the operating area under the watchful eye of another re-

sponsible adult.

2. Never allow another person in the operator’s station of the excavator while

the machine is in operation.

3. Stop machine operation if a person approaches the mowing area.

4. The operator should walk through the mowing area to identify and locate haz-

ards.

5. Hazards may include large stones, pieces of concrete, glass bottles, dis-

carded wire & cable, discarded automotive parts, fence posts, or exposed

pipes.

6. Inspect the mowing area for utility lines and features such as electrical lines

and enclosures, water and sewer lines, or communications equipment.

7. Read and understand this manual and the excavator manual before operating

the mower.

SAFE OPERATION 2

SAFETY

Failure to heed these warnings may result in personal injury or death.

• Before operating this machinery read the owner’s manual carefully.

• Use OSHA approved eye, ear

and head protection to protect

the operator from any flying

debris and noise.

• All personnel except operator should be 150 feet clear of machinery before starting

or operating it.

• Never use drugs or alcohol before or while

operating your brush mower.

• Be aware that operating equipment for an extended period of time can result in fa-

tigue or boredom and may cause the operator to lose awareness of what he/she is

doing. It is recommended that scheduled work breaks be taken to avoid this.

• Keep hands and loose clothing away from any power-driven parts.

• Avoid contact with hot surfaces including pumps, motors, hydraulic oil tanks and

hose connections.

• Do not operate this machine without all guards being in good condition and firmly in

place.

• Do not operate this machine on a excavator that is not properly maintained. If a

control failure should occur while operating this machine, immediately shut it down

and perform repairs before continuing.

• Be aware of the cutter drum rotation direction and do not let bystanders stand

within 150 feet to either side of the mower.

• Under no circumstances should the blades of this attachment contact the ground or

be curled up to where they are visible to the operator. Serious injury or death can

occur.

• Always walk the area to be worked to insure the jobsite is free of obstacles and de-

bris that could injure the operator or damage the machine.

SAFE OPERATION 3

• Stop the operation of this machine when people or vehicle driver’s vision becomes

obscured, caused by the discharge of materials and dust. Also avoid operating this

attachment in unusually foggy or dusty conditions or at night.

• Never leave the excavator or the brush shredding attachment unattended while it is

in the lifted position or while the shredder is spinning.

• Keep away from rotating elements to prevent entanglement.

• Listen for blades to completely stop prior to dismounting

machine.

• Use flashing warning lights when operating on highways,

except when prohibited by law.

• If using the side shredding method, drive at a speed you

can safely operate the vehicle and attachment. Normal

ground speed ranges from 0-5 miles per hour. Use slow

speeds when operating on or near slopes, ditches, drop-

offs, or when debris and foreign objects are to be avoided.

• Use the following guidelines to reduce the risk of equipment

and grass fires:

- Do not smoke or have an open flame near the machinery.

- Do not drive into burning areas or areas that have been freshly burned.

- Do not mow areas that are tinder dry and can burn easily.

- DO NOT allow debris to collect near hydraulic motors and gearboxes.

• Do not position the attachment or turn it so sharp that the hoses could get pinched

or squeezed.

SAFETY (cont.)

ATTACHING TO THE EXCAVATOR

• Be sure to inspect all safety devices (including safety shields, guards, deflectors,

etc.) before each use.

Safety Device

Examples

Shaft protection cap

Motor & gearbox

cover

Debris chain

curtain guarding

• Maintain all safety decals and make sure they are visible to the operator and by-

standers. If decals are worn, contact your nearest Kubota dealer for replacements.

• Replace bent or broken blades with new ones. Do not attempt to weld or bend

damaged blades. This can cause cracking or other types of damage that could re-

sult in the blade being thrown from the brush mower.

• Wear gloves and eye protection and exercise care when handling blades. Also be

alert to worn or damaged surfaces that could have sharp edges.

• Disengage hydraulics and shut off engine, bleed off hydraulic pressure to both high

and low flow circuits allowing all movement to stop before leaving the operator’s po-

sition to adjust, lubricate, clean, unclog, remove or install the attachment. See Ku-

bota KX080-3 Operators Manual for detailed instructions on bleeding off hydraulic

pressures.

• Before working on or underneath the attachment, place blocks on both sides (front

and back) of operating vehicle tires or treads and under each end of the attachment

to prevent accidental lowering of the machine. Also remove the ignition key from

the operating vehicle and allow all movement to stop before beginning work.

ATTACHING TO THE EXCAVATOR 4

ATTACHING TO THE KX080

ATTENTION

The K4080 brush mower is designed specifically for the Kubota KX080 excavator

and should not be used on any other machine. Make sure the person who is attach-

ing this brush mower has knowledge of attaching regular buckets and can do so in

a safe manner. The method used most often for attaching this brush mower is the

“curl-in” method.

Note: Remember to allow at least 3-5 minutes for the excavator to warm-up before

using with any oil-operated functions or attachments.

• Move the KX080 into position behind the brush

mower. Keep in mind that the “back” of the

mower is the end with the hydraulic motor.

• Once the power unit is in position, lower the ex-

cavator arm into position, inserting the rear por-

tion of the mount into the Quick-Attach (1) first

and then “curling” the front portion down into

place. Insert factory pin (2) to keep brush mower

locked in place. Refer to photo on left.

• Extend the main excavator dipper to its full length

in front of the excavator and set mower down with

the skid shoes firmly on level ground. This will

allow for easy access to the (3) flat-face couplers.

Never stand on attachment to reach couplers.

Turn off the excavator and bleed down pressure

on both high and low flow hydraulic circuits. See

Kubota KX080 Operators Manual.

• Couple the hoses. The female end on the

shredder is pressure in (left side) and the male

end is return (right side). These hoses should be

coupled to the high-flow circuit (26.4 GPM) oper-

ated by the right-hand joystick in the excavator.

Then enable hydraulic breaker mode on the ex-

cavator, allowing for zero pressure return, (4) by

turning the valve located near the hydraulic reser-

voir to the return to tank position. This step is

vital and if not followed will result in damage

to the hydraulic motor. Also, the high flow

circuit is most often the closest to the cab of

the excavator as shown in the second photo.

• If equipped with a thumb, plumb to the low-

flow circuit (17 GPM), which is operated by

the left-hand joystick on the excavator.

Zero Pressure Return Valve To Breaker

Mode “clockwise”.

ATTACHING TO THE EXCAVATOR 5

1 2

View from

operators seat.

return

pressure

LowFlow (SP2)

outside line

HighFlow (SP1)

inside line

ADJUSTMENT & MAINTENANCE

CLEANING YOUR BRUSH MOWER

To preserve life of paint and decals, wash the brush mower after each use. The

preservation of your brush mower’s decals is essential to safety, so make sure they

are kept in good condition. It is also recommended that some sort of degreasing

solution be used on all bearings.

ADJUSTMENT & MAINTENANCE 6

Kubota strongly recommends

dealers order one starter pack of knives to

be shipped with every K4080 brush mower.

• Check for excessive grease in bearing areas. Clean off any excessive amount.

• Clean clippings from hydraulic hose areas, mounting areas or any areas that may be

susceptible to excessive heat.

• Clean inside the brush mower with a pressure washer. Make sure the inside of the

mower is kept free from mud and compact grass. Keep in mind that mud built up on

the cutter drum can cause imbalance resulting in vibration.

• Preserve damaged decals or replace them if they are unreadable. Decal kits can be

obtained from your local Kubota dealer.

• Inspect blades for small cracks across the hole and insure they are wearing evenly.

• Inspect attachment hardware such as bolts and roll pins to make sure they are tight.

Running Your Attachment

The K4080 brush mower is designed to cut all types of vegetation such as grass, brush

and small trees. The condition of your terrain and the material to be cut should be

evaluated for the best results.

House Rotation Mowing

Brush on flat terrain can be cut by rotating the house

control from side-to-side and keeping the cutter head

just above ground level, moving the excavator for-

ward 40” at a time into uncut material.

Side Mowing

Another technique is to place the cutter head next to

the machine and drive forward keeping the head

near the road’s shoulder or edge of what you are cut-

ting around.

Top Down Mowing

The last way of operation is to start at the top and

work toward the ground. Raise the boom all the way

up and curl it away from you. This will allow the

head to be inverted and trim tree canopies. Then

swing the head from side to side in the vertical posi-

tion to trim the sides of trees. Finally, position the

head parallel to the ground to completely mulch the

branches and grass, eliminating any clean-up by

hand crews.

Brush cutting covers a wide range of conditions

and is more dangerous than mowing because of

the hidden objects. For this application, be sure

to feed large diameter branches or thick brush

into the side of the shredder where the blades

are hitting down. To reduce discharge, move

into uncut material with the discharge side of the

brush mower. This reduces debris throw signifi-

cantly. Never allow observers within 150’ of the

brush mowing operation.

BASIC OPERATION

BASIC OPERATION 7

Top Down Shredding

Side Mowing

House Rotation Mowing

BASIC OPERATION

BASIC OPERATION 8

1. Before beginning your job, walk the mowing area and clear all hidden hazards such

as large rocks, stumps, utility lines and hidden debris like broken glass, bottles and

miscellaneous materials. Projected debris can cause injuries to operators, pedes-

trians, livestock and property.

2. While inspecting your work area for debris, be on the lookout for bees, fire ants,

poison ivy and poison oak. Taking note of potential area hazards will increase your

productivity as well as your safety. Also avoid improper working conditions such as

overly saturated grounds, which can cause slippery conditions.

3. Check your discharge path. Most mowers and brush cutters will have some combi-

nation of material discharge system. Mulching flail mowers and brush cutters are

bi-directional. This allows the utilization of both sides of the blades. Always make

sure you know the discharge direction and discharge flaps are properly secured

and in good working order. Never start the mower if attachments are not securely

fastened to the power unit.

4. Your brush cutter is most efficient when the knives are sharp and turning at full

RPM. 1500-1800 RPM is the recommended speed the cutter shaft should turn.

5. Loading or “lugging down” the cutter excessively will reduce its cutting capacity and

result in increased hydraulic oil temperature. Stay aware of the cutter drum speed

and lift out of the cut until maximum speed is regained before resuming.

6. When cutting larger diameter material, lay the tree down with the blade and plane

the tree from side-to-side. This will result in a finer mulch which is quicker and eas-

ier on the machine than trying to grind a tree of 3” or more diameter from the top

down.

7. Never allow bystanders to within 150 feet of mowing or brush cutting.

8. Do not use this mower as a bucket to dig up roots and spread out piles of dirt.

Damaged caused by such activities will result in expensive repairs which will not be

covered under warranty. This weldment design is strong enough to last for decades

if cared for properly.

9. Frequent and routine maintenance procedures should be followed to insure the

safe and efficient operation of your brush mower

10. Abuse is indicated by drum damage, where the sides of the knives have left inden-

tations on the drum. Abuse is also indicated by premature knife failure across the

whole drum. If cutter abuse is not prevented, ear failure will follow. To prevent

abuse, always reduce cutting load before significant cutter drum speed is lost.

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