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Section 8: Troubleshooting 

Table of Contents

12/18/19

AP-SC2560 & AP-SC2572 Skid Steer Rotary Cutter 326-836MK

39

Section 8: Troubleshooting

Troubleshooting Chart

Problem

Cause

Solution

Motor Oil Seal Leaking

Return line from motor has been pinched 
or is collapsed.

Replace lower seal of motor. Check motor 
return hose for kinks.

Case drain line is not properly connected.

Connect case drain line to the hydraulic 
motor and skid steer reservoir.

Spindle Hub Seal Leaking

Seal is worn or torn.

Replace lower seal of motor and Spindle 
Hub output shaft seal. Check motor return 
hose for kinks.

Blades wearing excessively

Cutting on sandy ground.

Raise cutting height.

Contacting ground frequently.

Raise cutting height.

Blades coming loose

Blade bolts not tightened properly.

Use new nut and torque blade bolt nuts to 
450 ft lbs.

Blade carrier becomes loose

Running loose in the past.

Replace gearbox output shaft and blade 
carrier.

Blade carrier hardware not tight enough.

Tighten to specified torque.

Blade bolt holes worn

Blade hardware running loose.

Replace blades and blade bolts if worn.

Not maintaining tip speed.

Slow down to maintain tip speed.

Blades breaking

Hitting solid objects.

Thoroughly check the cutting area 
BEFORE beginning to cut. Be alert during 
cutting.

Blade Carrier bent

Hitting solid objects.

Avoid solid objects/Be alert. Replace blade 
carrier.

Gauge wheel support failing

Lowering too fast.

Adjust rate of drop.

Hitting objects when turning.

Reduce speed on turns.

Excessive skid shoe wear

Cutting height not level.

Adjust deck height or replace.

Soil abrasive.

Raise cutting height.

Cutting too low.

Raise cutting height.

Excessive vibration

Locked blades.

Inspect and unlock blades.

Blades have unequal weight.

Replace blades as a PAIR.

Blade carrier bent.

Replace blade carrier.

Hitch lugs failing

Tilting hitch plate too far forward.

Do not tilt the hitch plate too far forward. 
Do not put down pressure on hitch plate

Summary of Contents for AP-SC2560

Page 1: ...in French Language please see your Kubota dealer Read the Operator s Manual entirely When you see this symbol the subsequent instructions and warnings are serious follow without exception Your life and the lives of others depend on it Rotary Cutter AP SC2560 AP SC2572 Skid Steer 326 836MK Operator s Manual Printed 12 18 19 39165 ...

Page 2: ...lly ordered the weights and measurements are no longer accurate for your machine Update the record by adding the machine weight and measurements provided in the Specifications Capacities Section of this manual with the Option s weight and measurements Dealer Contact Information Model Number Serial Number Machine Height Machine Length Machine Width Machine Weight Delivery Date First Operation Acces...

Page 3: ... 12 Uncrating 12 Torque Requirements 12 Float Chain Assembly 13 SC2560 Motor And Hose Assembly 13 SC2572 Motor And Hose Assembly 14 SC2572 Vented Dipstick 14 Hitch Hook Up 15 Hydraulic Hose Hook up 15 Gauge Wheel Assembly Optional 16 Skid Shoe Assembly Optional 17 Motor Pressure Gauge Assembly Optional 18 Section 2 Adjustments 19 Hitch Positioning 19 Hitch Mounted Offset 19 Hitch Mounted Centered ...

Page 4: ...iate App on your smart phone open the App point your phone on the QR code and take a picture Dealer QR Locator The QR code on the left will link you to available dealers for Kubota products Refer to Parts Manual QR Locator on this page for detailed instructions Table of Contents 12 18 19 AP SC2560 AP SC2572 Skid Steer Rotary Cutter 326 836MK See previous page for Table of contents ...

Page 5: ...under the watchful eye of a responsible adult Be alert and shut the attachment and skid steer track loader down if children enter the work area Never carry children on the power machine or attachment There is not a safe place for them to ride They may fall off and be run over or interfere with the control of the power machine Never allow children to operate the power machine even under adult super...

Page 6: ...oing work Refer to the Operator s Manual for additional information Work on a level surface in a clean dry area that is well lit Lower attachment to the ground and follow all shutdown procedures before leaving the operator s seat to perform maintenance Do not work under any hydraulically supported equipment It can settle suddenly leak down or be lowered accidentally If it is necessary to work unde...

Page 7: ...ROPS is in the locked up position fasten seat belt snugly and securely to help protect against serious injury or death from falling and machine overturn Avoid High Pressure Fluids Escaping fluid under pressure can penetrate the skin causing serious injury Relieve all residual pressure before disconnecting hydraulic lines or performing work on the hydraulic system Make sure all hydraulic fluid conn...

Page 8: ...irators are required wear a respirator approved for protection against crystalline silica containing dust Do not alter respirator in any way Workers who use tight fitting respirators can not have beards mustaches which interfere with the respirator seal to the face If possible change into disposable or washable work clothes at the work site shower and change into clean clothing before leaving the ...

Page 9: ...Important Safety Information 12 18 19 5 This page left blank intentionally ...

Page 10: ...e new equipment installed during repair requires safety labels to be affixed to the replaced component as specified by Kubota When ordering new components make sure the correct safety labels are included in the request 4 Refer to this section for proper label placement To install new labels a Clean surface area where label is to be placed b Spray soapy water onto the cleaned area c Peel backing fr...

Page 11: ...Table of Contents 12 18 19 AP SC2560 AP SC2572 Skid Steer Rotary Cutter 326 836MK 7 838 948C Danger Do Not Operate 39166 39166 39165 818 229C Amber Reflector 818 555C Danger Rotating Blade Hazard ...

Page 12: ...e of Contents 12 18 19 AP SC2560 AP SC2572 Skid Steer Rotary Cutter 326 836MK 8 Model SC2560 39165 Model SC2572 39179 39166 39166 Important Safety Information 818 831C Warning High Pressure 818 798C Warning Pinch Point Hazard 3 Places ...

Page 13: ...ant Safety Information Table of Contents 12 18 19 AP SC2560 AP SC2572 Skid Steer Rotary Cutter 326 836MK 9 39179 39179 818 543C Danger Guard Missing SC2572 Only 818 552C Danger Rotating Driveline SC2572 Only ...

Page 14: ...ating practices will help you get years of satisfactory use from this attachment Application The SC2560 and SC2572 Series Skid Steer Rotary Cutters are built and designed by Kubota for cutting on gently sloping or slightly contoured right of ways pastures set aside acres and row crop fields These skid steer mounted cutters provide unparalleled access to tightly restricted areas such as under fence...

Page 15: ...ed with the service received the following actions are suggested 1 Discuss any problems you have with your attachment with your dealership service personnel so they can address the problem 2 If you are still not satisfied seek out the owner or general manager of the dealership explain the question problem and request assistance 3 For further assistance write to Kubota by Land Pride Service Departm...

Page 16: ... non concrete support blocks 3 Turn off engine and remove switch key to prevent unauthorized starting IMPORTANT Skid Steer must be equipped with a case drain system 4 Relieve all hydraulic pressure to auxiliary hydraulic lines 5 If included raise seat bar and move controls until both lock 6 Wait for all components to come to a complete stop before leaving the operator s seat 7 Use steps grab handl...

Page 17: ... the deck Make sure you check the hydraulic flow rating on the deck motor decal to verify it matches your skid steer s hydraulic flow rating Skip assembly instructions below if the motor s flow rating matches See Motor and Hose Assembly on page 28 to properly select a motor that matches your skid steer Refer to Figure 1 2 1 Remove fasteners 1 2 3 Keep fasteners for reassembly of new motor 2 Remove...

Page 18: ...r and Hose Assembly on page 28 to properly select a motor that matches your skid steer Refer to Figure 1 3 1 Remove fasteners 7 8 and coupling guard 11 Keep fasteners and coupling guard for reassembly of new motor 2 Remove fasteners 1 2 3 Keep fasteners for reassembly of new motor 3 Remove existing motor and hose assembly 5 Clean old gasket 6 from mounting flange 4 4 Place new gasket 6 onto mounti...

Page 19: ...and then attach to skid steer s lower hitch loop See Height Adjustment Safety Chain on page 20 Hydraulic Hose Hook up Refer to Figure 1 5 Two high pressure hydraulic outlets are required for the hydraulic motor and one outlet for the case drain Refer to Figure 1 6 1 If attaching to a Kubota SVL or SSV machine be sure to route hydraulic hoses through hose loop 1 on top of cutter hitch plate and on ...

Page 20: ...washers 9 lock washers 8 and hex nuts 5 Do not torque nut at this time Finger tighten nuts only 3 Check alignment of gauge wheel front mount holes with chain guard holes A Skip to step 4 if mounting holes are in alignment If gauge wheel mounting holes are not in alignment loosen remaining chain guard bolts 2 and realign chain guard as follows a Realign chain guard by inserting a drift punch in one...

Page 21: ... Cutter 3 or more off the ground and place support blocks under the cutter Make sure support blocks are positioned so they will not interfere with skid shoe installation 2 Lower cutter onto support blocks place skid steer in park set park brakes shut skid steer off and remove switch key 3 Install skid shoes 1 to the four deck corners with 3 8 16X1 1 4 GR5 plow bolts 2 flat washers 5 lock washers 4...

Page 22: ...Remove 3 4 x 13 1 2 hose 2 from right hand side of motor 2 Attach pressure gauge 6 to adapter fitting 5 3 Attach female end of tee fitting 4 to the male end of tee fitting 7 4 Attach pressure gauge 6 and adapter fitting 5 to tee fitting 4 so that the face of the pressure gauge is facing the operators cab 5 Attach 3 4 x 10 15 16 hose 3 to the adapter fitting connected to the motor 1 and to the male...

Page 23: ... cotter pin to secure them in place 5 Attach Floating Chains 4 to hitch plate lugs at positions marked B1 with chain pins 5 6 Insert cotter pins 2 through chain pin holes and bend one or both legs of each cotter pin to secure them in place Hitch Mounted Centered 1 Drive roll pins 7 through one of two holes in both pivot pins 8 2 Align hitch pivot pin bushings 3 with cutter mounting lug holes A2 3 ...

Page 24: ... when power to hydraulics is off Refer to Figure 2 2 For safety the cutter rear skid shoes should not be raised higher than 16 1 2 off the ground 18 Maximum cutting height 1 Raise cutter s rear skid shoes slightly less than 16 1 2 off the ground 2 Run height adjustment safety chain from under the 2 x 3 hitch tube to the skid steer lower hitch loop Thread chain through the hitch loop and back towar...

Page 25: ...tom of skid shoe at the front deck corner is dimension A off the ground and the rear deck corner is slightly higher off the ground than the front deck corner 4 Adjust ratchet jack to lower gauge wheel until it is at ground level 5 With gauge wheel at ground level use skid steer hydraulics to adjust cutter hitch plate angle until the float chain sags The Rotary Cutter should be operated with gauge ...

Page 26: ...height will need readjusting frequently to maintain correct deck positioning Equipment Clearances Visually inspect hydraulic hoses for possible pinch points and length Make any necessary adjustments before putting equipment into service 1 If necessary have someone stand nearby that can motion for the operator to stop if a problem develops while checking for clearances 2 With deck lowered to its mi...

Page 27: ...onents become entangled in rotating components struck by objects thrown about fall off and be run over etc Hydraulic fluid under high pressure can penetrate the skin and or eyes causing a serious injury Wear protective gloves and safety glasses or goggles when working with hydraulic systems Use a piece of cardboard or wood rather than hands when searching for leaks A doctor familiar with this type...

Page 28: ...ack in the float chains 4 Start the skid steer and engage hydraulic motor Allow several seconds for cutter blades to become aligned properly If deck continues to vibrate after several seconds stop motor and inspect blades 5 It is important to maintain correct hydraulic motor speed Loss of motor speed will allow the blades to hinge back and result in ragged uneven cutting 6 Ground speed depends on ...

Page 29: ...6 836MK 25 Cutting Operation Figure 3 3 70749 Deck is open in front and rear The direction of travel while cutting should be forward or reverse Deck open Deck open Never swing deck side to side without first raising the deck off the ground and high enough to clear all obstacles Deck not open Deck not open ...

Page 30: ...nd fully functional The next step is to perform a running check of the skid steer unit As you get onto the skid steer and into the operator compartment always use factory provided hand holds and don t grab the steering or control levers to ease or stabilize your entry Fasten your seat belt once you are seated and begin to mentally orient yourself with the position of all controls switches pedals l...

Page 31: ...n terrain or furrows Driving too fast over uneven ground will cause the unit to undulate in a forward pitching motion The best advice is to drive slow but keep engine speed and blade tip speed high Once you get the feel of it you can increase speed and productivity When you do need to stop make sure you set the park brake shut the skid steer engine off and allow time for the blades to stop rotatin...

Page 32: ...eavy skid shoe bundle is constructed of 3 8 x 3 flat bar The heavy skid shoes will wear longer and withstand more abuse Motor and Hose Assembly Refer to Figure 4 3 11 17 GPM Motor Assembly326 820A 18 23 GPM Motor Assembly326 821A 24 30 GPM Motor Assembly326 822A SC2560 Hose Assy326 826L SC2572 Hose Assy326 834L There are three motor and two hose assembly options to meet your skid steer requirement...

Page 33: ...MK 29 Motor Pressure Gauge Figure 4 4 39205 Motor Pressure Gauge Refer to Figure 4 4 Motor Pressure Gauge Bundle326 833A Kubota offers an optional Motor Pressure Gauge Bundle that allows for the operator to ensure that the motor is operating at optimal psi Optimal operating psi should be between 2200 2800 psi ...

Page 34: ...hment Replace parts only with genuine OEM parts Buildup of debris around moving components and gearboxes is a fire hazard Keep rotating parts and gearboxes free from debris to avoid serious injury and property damage Hydraulic System WARNING To avoid serious injury or death Hydraulic fluid under high pressure can penetrate the skin and or eyes causing a serious injury Wear protective gloves and sa...

Page 35: ...n which can damage gearbox bearings and create structural cracks 7 Refer to Figure 5 1 Carefully check cutting edges of blades in relation to blade carrier rotation to ensure correct blade placement Blade rotation is clockwise with cutting edge leading Airfoil lift must be oriented towards the top of the deck 39165 Clockwise Blade Rotation Blade Bolt Access Cover Blade Rotation Decal 848 416C Cutt...

Page 36: ...d remove switch key 3 Remove 3 8 hex locknuts 3 lock washers 4 flat washers 5 3 8 plow bolts 2 and skid shoes 1 4 Plow bolts should be checked for wear and replaced if necessary 5 Install the new short skid shoe 2 to the back left deck corner as shown with 3 8 16 x 1 1 4 GR5 plow bolts 2 flat washers 6 lock washers 5 and 3 8 hex locknuts 4 Torque locknuts 4 to 31 ft lbs 6 Install the long skid sho...

Page 37: ... be used for a long period 1 Clean off any dirt or grease that may have accumulated on the cutter and moving parts Scrape off compacted dirt from the bottom of the deck and then wash the surface thoroughly with a garden hose A coating of oil may also be applied to the lower deck area to minimize oxidation 2 Check blades and blade bolts for wear and replace if necessary See Cutter Blade Maintenance...

Page 38: ...ication Multi purpose Grease Quantity As required 37922 24549 24549 24549 25 Hours 25 Hours Gauge Wheel Spindle 1 Zerk Type of Lubrication Multi purpose Grease Quantity As required 25 Hours Lubrication Points Axle Hub Bearing 1 Zerk Type of Lubrication Multi purpose Grease Quantity As required 25 Hours 50 Hrs Multi purpose spray lube Multi purpose grease lube Multi purpose oil lube Intervals in ho...

Page 39: ... housing 1 Disengage blade hydraulics Make sure blades have come to a complete stop 2 Disconnect float chains from cutter deck at mounting holes A See Figure 2 4 on page 21 3 Disconnect height adjustment safety chain from front of loader See Figure 2 4 on page 21 4 Raise front of cutter off the ground and tilt hitch forward until cutter is hanging from the hitch straight down 5 Set park brake shut...

Page 40: ...1 17 gpm 41 6 64 4 lpm flow Medium volume drive motor 18 23 gpm 68 1 87 1 lpm flow High volume drive motor 24 30 gpm 90 8 113 6 lpm flow Hydraulic pressure 1500 to 3500 psi 10 34 to 24 13 MPa Deck thickness 10 Ga 3 4 mm Side skirt construction 1 4 6 mm Steel Deck wear protection Optional Optional four corner mounted skid shoes Skid shoes construction Optional Standard duty skid shoes 1 4 x 2 6 mm ...

Page 41: ...le of Contents 12 18 19 AP SC2560 AP SC2572 Skid Steer Rotary Cutter 326 836MK 37 39178 25 1 4 64 1 cm MIN CUTTING HEIGHT SC2560 66 1 68 m SC2572 78 1 98 m SC2560 79 3 4 2 03 m SC2572 92 1 4 2 34 m SC2560 110 1 4 2 80 m SC2572 121 3 4 3 09 m ...

Page 42: ...obstructions which helps protect gearbox output shaft 1 2 x 4 Heat treated free swinging blades Heat treated blades offer longer life Free swinging blades protect from obstructions 2 Diameter cutting capacity Can aid in clearing brush SC2560 High blade tip speed Low volume motor 17 939 fpm at 17 gpm Medium volume motor 19 181 fpm at 23 gpm High volume motor 19 390 fpm at 30 gpm SC2572 High blade t...

Page 43: ...se in the past Replace gearbox output shaft and blade carrier Blade carrier hardware not tight enough Tighten to specified torque Blade bolt holes worn Blade hardware running loose Replace blades and blade bolts if worn Not maintaining tip speed Slow down to maintain tip speed Blades breaking Hitting solid objects Thoroughly check the cutting area BEFORE beginning to cut Be alert during cutting Bl...

Page 44: ... M16 X 1 5 155 115 240 180 335 245 5 8 18 150 110 230 170 325 240 M18 X 2 5 195 145 310 230 405 300 3 4 10 235 170 360 265 510 375 M18 X 1 5 220 165 350 260 485 355 3 4 16 260 190 405 295 570 420 M20 X 2 5 280 205 440 325 610 450 7 8 9 225 165 585 430 820 605 M20 X 1 5 310 230 650 480 900 665 7 8 14 250 185 640 475 905 670 M24 X 3 480 355 760 560 1050 780 1 8 340 250 875 645 1230 910 M24 X 2 525 3...

Page 45: ...Section 9 Torque Values Chart Table of Contents 12 18 19 AP SC2560 AP SC2572 Skid Steer Rotary Cutter 326 836MK 41 This page left blank intentionally ...

Page 46: ...nd Pride s judgment shall have been misused or damaged by accident or lack of normal maintenance or care or which has been repaired or altered in a way which adversely affects its performance or reliability or which has been used for a purpose for which the product is not designed Misuse also specifically includes failure to properly maintain oil levels grease points and driveline shafts Claims un...

Page 47: ...ll representations and warranties whether express or implied including but not limited to warranties of merchantability and fitness for a particular purpose and Kubota shall not be liable for any damages whether compensatory direct indirect incidental special or consequential arising out of or in connection with the use of this publication or in the information therein The Product s described in t...

Page 48: ...CA 95240 209 334 9910 Midwest Division Telephone 31700 W 207th ST Edgerton KS 66021 913 215 5915 Central Division Telephone 14855 FAA Blvd Fort Worth TX 76155 817 571 0900 Northern Division Telephone 6300 at One Kubota Way Groveport OH 43125 614 835 1100 Southeast Division Telephone 1025 Northbrook Parkway Suwanee GA 30024 770 995 8855 ...

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