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TMG -TBH72 Product Manual

3-point swing backhoe attachment
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PRODUCT MANUAL
v.2022.03.31
MODEL TMG-TBH72
3-Point Swing Backhoe Attachment
WWW.TMGINDUSTRIAL.COM
Toll Free:1-877-761-2819

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  • Page 1 PRODUCT MANUAL v.2022.03.31 MODEL TMG-TBH72 3-Point Swing Backhoe Attachment WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819...

  • Page 2: Table Of Contents

    Important Safety Information ..........2 Safety at All Times .

  • Page 3: Important Safety Information

    Important Safety Information Safety at All Times Careful operation is your best assurance against an accident. All operators, no matter how much experience they may have, should carefully read this manual and other related manuals, or have the manuals read to them, before operating the power machine and this implement.
  • Page 4 Disconnect battery ground cable (-) before servicing or adjusting electrical systems or before welding on implement. s Inspect all parts. Make certain parts are in good condition & installed properly. Replace parts on this implement with genuine TMG parts only. Do not alter this implement in a way which will adversely WWW.TMGINDUSTRIAL.COM...
  • Page 5 Use Seat Belt and ROPS TMG recommends the use of a CAB or roll-over-protective-structures (ROPS) and seat belt in almost all power machines. Combination of a CAB or ROPS and seat belt will reduce the risk of serious injury or death if the power machine should be upset.

  • Page 6: Safety Labels

    3. Some new equipment installed during repair requires safety labels to be affixed to the replaced component as specified by TMG. 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.
  • Page 7 Warning: To prevent bodily injury Warning: Prevent injuries caused by instability Warning: Adjust tractor speed accordingly to maintain precision of control Warning: Crush Hazard Caution: Grease all the points before operating WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819 6 / 30...
  • Page 8 Stabilizers controls Crowd and swing controls Boom and bucket controls Boom Lock: Swing Lock and Boom Lock When transporting or dismounting backhoe, you must lock the backhoe's swing and boom. Position boom straight back and drop pin through holes in swing frame and boom. When not in use, store pin in hole provided on swing frame and boom. BE SURE remove the lock pin before you start operating the backhoe! WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819...

  • Page 9: Introduction

    Introduction We congratulate you on choosing this high quality hydraulic backhoe! The purpose of this instruction manual is to help you maintain and use your backhoe. Read the instruction manual carefully. It contains information and guidance that will help you achieve years of reliable service and performance. The backhoe has been designed to require only little maintenance (cleaning and lubricating).

  • Page 10: Assembly And Hook-Up

    Assembly and Hook-UP Backhoe Assembly Remove all loose parts or packaging from the crate, check goods without damaged and omission. Check the packing list as below, Part No. Ref. No. Parts Description BK175.01 Frame and Boom Assembly BK175.02 Dipperstick and Bucket Assembly GB/T5872-2000 Bolt-M12x90 BK175.1000.800...

  • Page 11: Tractor Preparation

    Tractor Preparation Tractor Requirements Tractor horsepower should be within the range noted below. Tractors outside the horsepower range must not be used. Hitch Category----------------3-Point Cat. I & II Power Take-Off Speed-----------------540 rpm Horsepower Requirements-----------20-50 hp Rear Counterweight Do not exceed the manufacturer’s rating for maximum gross vehicle weight. Refer to operator’s manual or ROPS serial plate provided with tractor.
  • Page 12 Escaping fluid under pressure can have sufficient force to penetrate the skin causing serious personal injury. Fluid escaping from a very small hole can be almost invisible. Use a piece of cardboard or wood, rather than hands to search for suspected leaks.

  • Page 13: Attaching Backhoe To Tractor Hydraulics

    Do not attempt to modify the mounting in any way. Incorrect mounting or modifying of the backhoe 3-point mounting could allow the backhoe to raise up during use, resulting in injury or death. DO NOT attempt to raise the backhoe with the 3-point hitch. The backhoe center links along with the hitch lock out arms make the backhoe a solid mount that is immovable.

  • Page 14: Backhoe Operation

    Backhoe Operation Levers The backhoe is equipped with two hydraulic stabilizers that keep the backhoe in place and stabilize digging especially while dumping to the side. Digging is more effective with stabilizers and should be used during digging. Stabilizers extend wider than tractors rear wheels giving balance to digging.

  • Page 15: Excavation

    Excavation When operating the backhoe, smoothness of technique should be strived for at all times. Smoothness will come with experience and practice at feathering the controls. Establish a flowing digging cycle to increase operator efficiency and save unnecessary wear on the machine. Observe the following points to obtain the best results and to fully utilize the digging force of the backhoe.
  • Page 16 sides of the bucket to scrape off any high spots. Dislodge any exposed rocks if they seem loose. When finishing walls, finish the far wall by curling the bucket out, crowding the dipperstick out, and forcing the bucket down. To finish the closest wall, lift the bucket up and curl it in. Once the sides are cleaned up, finish grading the bottom of the excavation.

  • Page 17: Special Applications

    Special Applications Trenching Between a Building and an Open Excavation Start the trench at the building and trench toward the open excavation. Dig toward the open excavation until there is just enough room to move the unit out from between the trench and open excavation. Position the unit so the backhoe swing is over the centerline of the trench connection.

  • Page 18: Specifications

    Refer to your tractor operator's manual for recommendations. Specifications Backhoe Model TMG-TBH72 Digging Depth (two foot flat bottom) 1813mm 72” Reach from center line of Swing Pivot 2458mm 96.77”...

  • Page 19: Maintenance And Lubrication

    Maintenance and Lubrication Proper servicing and adjustments are key to the long life of any implement. With careful inspection and routine maintenance, you can avoid costly downtime and repair. Check all hardware after several hours of operation and regularly thereafter to ensure they are tight and secured. Replace worn, damaged, or illegible safety labels by obtaining new labels.
  • Page 20 Lower the backhoe to the ground and relieve pressure in backhoe hydraulic lines prior to performing any service or maintenance operations on the tractor or backhoe. CAUTION Escaping fluid under pressure can have sufficient force to penetrate the skin , causing serious injury . Before disconnecting lines, be sure to relieve all pressure.

  • Page 21: Troubleshooting

    Troubleshooting This Trouble Shooting Chart is provided for reference to possible backhoe operational problems. Determine the problem that best describes the operational problem being experienced and eliminate the possible causes as listed by following the correction procedures. PROBLEM POSSIBLE CAUSE CORRECTION Low hydraulic fluid level.
  • Page 22 Low hydraulic fluid level. Check and replenish hydraulic fluid Allow hydraulic system to warm up to operating Cold hydraulic fluid temperature Hydraulic Oil viscosity too heavy or Check oil number and viscosity, Refill correct Incorrect oil hydraulic oil Engine R.P.M. too slow (hydraulic Increase engine speed to obtain satisfactory pump R.P.M.
  • Page 23 Allow hydraulic fluid to warm up to Cold Hydraulic Fluid operating temperature Hydraulic Oil viscosity too heavy Check oil number and viscosity, Refill or Incorrect oil correct hydraulic oil. Excessive load in bucket. Loading exceeds specified Reduce load System relief valve backhoe capacity squeals.

  • Page 24: Appendix

    Appendix TORQUE TIGHTENING CHART 1 TORQUE TIGHTENING CHART 2 WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819 23 / 30...

  • Page 25: Parts Illustrations

    Part Illustrations General Information Illustrations The individual parts in their normal relationship to each other. Reference numbers are used in the illustrations. These numbers correspond to those in the "Number" column and are followed by the quantity required and description. Directional Reference "Right hand"...
  • Page 26 Section B. Seat, Control Assembly WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819 25 / 30...
  • Page 27 Part No. Ref. No. Parts Description BK215.033 Seat GB/T5782-2000 Bolt-M8x20 GB/T93-2002 Spring Washer 8 GB/T97.1-2002 Plain Washer 8 BK175.1000.900 Seat Plate Weldment BK175.1000.006 Pin- Seat Adjust GB/T5782-2000 Bolt-M12x110 GB/T889.1-2000 Nut Lock -M12 BK175.1000.1500 Seat Frame Weldment BK175.1000.800 Seat Base Weldment GB/T5782-2000 Bolt-M12x90 GB/T5782-2000...
  • Page 28 Section C. Leg Support Assembly Part No. Ref. No. Parts Description BK175.1000.001 Copper Sleeve(28x25) GB/T5782-2000 Bolt-M12x50 GB/T97.1-2002 Plain Washer 12 GB/T889.1-2000 Nut Lock-M12 BK175.1000.700 Swing Cylinder Base BK175.1000.013 Pin-Swing Cylinder GB/T5782-2000 Bolt-M6x50 BK175.1000.002 Pin-Leg Support 1 BK175.1000.500 Leg Support Weldment BK175.1000.1400 Pin- Foot Plate GB/T5782-2000...
  • Page 29 Section D. Bucket, Dipperstick Assembly Part No. Ref. No. Parts Description BK175.1000.010 Pin-Dippperstick 1 BK175.1000.009 Pin-Dippperstick 2 BK175.1000.015 Copper Sleeve(36x32) BK175.1000.1300 Inner Link Weldment BK175.1000.1100 Bucket Weidment BK175.1000.011 Pin-Bucket 2 GB/T889.1-2000 Nut Lock -M12 BK6N.01.105 Bucket Teeth GB/T5782-2000 Bolt-M12x45 BK175.1000.1200 Outer Link Weldment BK175.1000.012 Pin-Bucket 1...
  • Page 30 Section E. Hose Fitting Assembly WWW.TMGINDUSTRIAL.COM Toll Free:1-877-761-2819 29 / 30...
  • Page 31 Part No. Ref. No. Parts Description JB/T7271.1-2000 Plastic Ball-M10x32 GB/T6172.1-2000 Nut-M10 BK215.040 Hand Lever HC-TR55/6 Control Valve JB/T7271.5-2000 Plastic Ball-M10x50 BK215.401 Lever stick GB/T6172.1-2000 Nut-M8 GB/T8606-2000 Quick Coupler-G1/2-M BL25.40.102 Adapter, M18-R1/2 GB/T3452.1-2000 O-Ring, 13x2.4 BK175.2000.100 Hose-Valve To In Out BK215.403 Hollow Bolt-G3/8 JB/T982-2000 Copper Washer 18...

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