LOFTNESS 721D1HH Owner's Manual

Hydraulic snow blower high flow series
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Hydraulic Snow Blower
High Flow Series
721D1HH • 781D1HH • 721D2HH • 781D2HH • 841D2HH
781D3HH • 841D3HH • 721EMHH • 781EMHH • 721ESHH
Owner's Manual and Parts Book
(Originating w/Serial Number 88-101)
Model Number:
Serial Number:
Date of Purchase:
N142336 Rev. A
08.17.18

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Summary of Contents for LOFTNESS 721D1HH

  • Page 1 Hydraulic Snow Blower High Flow Series 721D1HH • 781D1HH • 721D2HH • 781D2HH • 841D2HH 781D3HH • 841D3HH • 721EMHH • 781EMHH • 721ESHH Owner’s Manual and Parts Book (Originating w/Serial Number 88-101) Model Number: Serial Number: Date of Purchase: N142336 Rev.
  • Page 3 All Loftness products have a one (1) year limited warranty. The XLB10 Grain Bag Loader has a two (2) year limited warranty. If any Loftness product is used as rental equipment, or in a commercial application, the limited warranty period is for only 30 days from the delivery date to the original customers.
  • Page 5: Table Of Contents

    Table of Contents Warranty Table of Contents Ordering Code Ordering Code ............. . .1 Snow Blower (Example) .
  • Page 6 Table of Contents Maintenance (Cont’d) Adjusting Skid Shoes ............20 Storage .
  • Page 7: Ordering Code

    Ordering Code Ordering Code Snow Blower (Example) The ordering code will consist of two numbers (machine size), one letter (auger configuration), one letter (machine type), one number or letter (motor system), one letter (rotator system), and one letter (deflector system). An example for a snow blower of this type would be as shown below.
  • Page 8 Hydraulic Snow Blower OM...
  • Page 9: Introduction

    The owner’s manual must be available for all that may not be reflected in this publication. Loftness operators. reserves the right to make product improvements to the machine at any time.
  • Page 10: Hydraulic Snow Blower Features

    Introduction Hydraulic Snow Blower Features • Hydraulic flow • 15 to 20 GPM (E-Series) • 21 to 40 GPM (D-Series) • Hydraulic rotator • Hydraulic deflector • Interfaces with factory electrical connections to enable using the joystick functions • Shorter hitch for more maneuverability •...
  • Page 11: Safety Instructions

    Safety First Be certain all machine operators are aware of the dangers indicated by safety decals applied to the machine, and be certain they follow all safety decal Safety Alert Symbol instructions. Contact Loftness for safety decal replacement. This message alert...
  • Page 12: Mandatory Shut-Down Procedure

    Safety Instructions Mandatory Shut-Down Procedure • Because of the potential safety hazard to eyes from hydraulic leaks and/or flying debris, use of protective eyewear is absolutely mandatory for operator and • Stop the machine and attachment on a level surface others in the work area.
  • Page 13 Safety Instructions Safety Rules (Cont’d) • Always remove snow by traveling in an up and down direction on slopes. To avoid loss of control and to prevent overturn, never drive diagonally across the Operating Safety (Cont’d) slope. • Keep your feet on the pedals, (floor plates) seat belt •...
  • Page 14: Maintenance Safety

    Safety Instructions Safety Rules (Cont’d) • It is the operator’s responsibility to be aware of machine and attachment operation and work area hazards at all times. Maintenance Safety • Operators are responsible to know the location • Do not work on this attachment until you have and function of all guards and shields including but carefully read and thoroughly understand the not limited to the drive and auger.
  • Page 15: California Proposition 65 Warning

    Safety Instructions California Proposition 65 Warning WARNING: This product can expose you to Mineral Oil, which is known to the State of California to cause cancer. For more information, go to www.p65warnings.ca.gov. A decal with this warning statement is adhered to the machine.
  • Page 16: Safety Decal Locations

    Safety Instructions Safety Decal Locations Check and replace any worn, torn, hard to read or missing safety decals on your machine. NOTE: This section shows where safety-related decals are applied on the machine. For all machine decals see “Machine Decals and Signs” on page 38. See the following page for detailed images of the safety decals called out above.
  • Page 17 Safety Instructions Safety Decal Locations (Cont’d) Part No. 4256 Part No. 4190 Part No. N68716 Part No. 4257 Part No. 203264 Part No. 4191 Hydraulic Snow Blower OM...
  • Page 18: Hydraulic Snow Blower Identification

    Safety Instructions Hydraulic Snow Blower Identification Hydraulic Snow Blower OM...
  • Page 19: Operating Instructions

    Operating Instructions Operation Safety IMPORTANT: For manual coupling, fully raise the attachment-locking levers on the loader mounting plate before attempting to Before operating this machine become familiar with and connect the blower to the skid steer. study all the hazard warning and safety precautions listed in the Safety Instructions section of this manual beginning on page 5.
  • Page 20: Blowing Snow

    Operating Instructions Installing the Snow Blower to the Blowing Snow Loader (Cont’d) A definite pattern of operation is required to thoroughly clean the snow area. The patterns shown in this section Hydraulic Connection should be used to avoid throwing snow in unwanted places, as well as eliminating a second removal of snow.
  • Page 21: Freeing Plugged Snow

    Operating Instructions Blowing Snow (Cont’d) Freeing Plugged Snow WARNING: Do not use your hands or feet to unplug the chute. Do not attempt to clear a plugged chute while the snow blower is under power. Disengage the PTO or hydraulic controls by shutting off the power unit, remove ignition key, wait for all movement to stop, and then clear the snow from the chute using a wooden pole.
  • Page 22 Hydraulic Snow Blower OM...
  • Page 23: Maintenance

    Maintenance General Maintenance Break-In Schedule To ensure efficient operation, you should inspect, Inspect and service after one (1) hour of operation all lubricate, and make necessary adjustments and repairs bolts, set screws on bearings, sprockets and motor at regular intervals. Parts that are starting to show mount.
  • Page 24: Auger Chain Lubrication

    Maintenance Lubrication (Cont’d) Auger Chain Lubrication Grease Points Location (Cont’d) IMPORTANT: The chain cover must be removed to Location: Spout band (1, 2). lubricate the auger chain. See “Removing Every 8 hours of operation. Interval: Chain Cover” page instructions before attempting to remove the cover.
  • Page 25: Removing Chain Cover

    Maintenance Removing Chain Cover Disconnect or turn off all power to the snow blower. DANGER: Failure to turn off power to the snow blower before removing the chain cover could result in serious injury or death. There should be 1 in. deflection in the chain (1) when pressure is applied at the midpoint.
  • Page 26: Aligning Chain

    Maintenance Aligning Chain Disconnect or turn off all power to the snow blower. DANGER: Failure to turn off power to the snow blower before aligning the chain could result in serious injury or death. Remove chain cover. See “Removing Chain Cover” above for instructions.
  • Page 27: Adjusting Skid Shoes

    Maintenance Adjusting Skid Shoes Storage Storage at the end of the snow removal season or between each use requires an inspection of the snow blower for repairs and general upkeep to insure it will be ready for future use. WARNING: Before servicing or adjusting the snow blower, or removing material from it, be sure to follow the “Mandatory Shut-down Procedure”...
  • Page 28: Troubleshooting

    Maintenance Troubleshooting PROBLEM CAUSE SOLUTION Auger will not turn. Key disengaged or sheared. Verify key stock on motor shaft and auger shaft are engaged. Auger chain broken. Replace drive chain. (See page 30 for exploded view). Motor malfunction. Repair or replace complete unit. Hydraulic hose connection.
  • Page 29: Parts Identification

    Parts Identification PARTS IDENTIFICATION Hydraulic Snow Blower OM...
  • Page 30: Snow Blower Frame And Fan Drive

    Parts Identification Snow Blower Frame and Fan Drive For parts breakdown of item 2 (Motor and Valve) see page 34. For parts breakdown and sizes of item 11 (Auger) see page 26. Hydraulic Snow Blower OM...
  • Page 31 ASM, BLOWER MOTOR & VALVE 8.0 (For Models 781D1HH, 721D1HH) BOLT, CARRIAGE 5/16" X 3/4" GRADE 5 (For Models 721EMHH, 4258 781EMHH, 721ESHH) BOLT, CARRIAGE 3/8" X 1" GR. 5 (For Models 781D1HH, 721D1HH, 4034 721D2HH, 781D2HH, 781D3HH, 841D2HH, 841D3HH) FLANGETTE, (ONLY) 1" BRNG (For Models 721EMHH, 721ESHH,...
  • Page 32: Auger With Sprocket, 72" X 13" (201104), 78" X 13" (201127), 78" X 16" (201143), 84" X 16" (201150), 72" X 16" (201174)

    Parts Identification Auger with Sprocket, 72" x 13" (201104), 78" x 13" (201127), 78" x 16" (201143), 84" x 16" (201150), 72" x 16" (201174) Hydraulic Snow Blower OM...
  • Page 33 Parts Identification Auger with Sprocket, 72" x 13" (201104), 78" x 13" (201127), 78" x 16" (201143), 84" x 16" (201150), 72" x 16" (201174) Quantities shown below are for one auger assembly. QTY. PART # DESCRIPTION 201105 AUGER, 72" BLOWER 13" 201126 AUGER, 78"...
  • Page 34: Cutting Edge And Skid Shoes

    Parts Identification Cutting Edge and Skid Shoes QTY. PART # DESCRIPTION 7228 EDGE, 72" BOLT-ON CUTTING (For 72" Models) N11485 EDGE, 78" BOLT-ON CUTTING (For 78" Models) 7229 EDGE, 84" BOLT-ON 3/8" X 3" (For 84" Models) BOLT, CARRIAGE 1/2" X 1-1/4" (72") 4038 (78") (84")
  • Page 35: Spout With Deflector, 9.5" (N10525) And 11" (N10599)

    Parts Identification Spout with Deflector, 9.5" (N10525) and 11" (N10599) Quantities shown below are for one spout assembly. QTY. PART # DESCRIPTION N10521 SPOUT, 9-1/2" FORMED BLOWER N10597 SPOUT, 11" FORMED BLOWER N10523 DEFLECTOR, 9-1/2" & 11" SPOUT N10518 ROD, 9-1/2"&11"SPOUT DEFLECTOR 4375 PIN, ROLL 3/16"...
  • Page 36: Auger Drive

    Parts Identification Auger Drive Hydraulic Snow Blower OM...
  • Page 37 201182 781D1HH, 781D2HH, 781D3HH, 841D2HH, 841D3HH) 201115 CHAIN, #50 X 82 PITCH (For Models 721EMHH, 721ESHH, 781EMHH) CHAIN, #60 X 76 PITCH (For Models 721D1HH, 721D2HH, 781D1HH, 201178 781D2HH, 781D3HH, 841D2HH, 841D3HH) SPROCKET, 50B24 1-1/4" BORE (For Models 721EMHH, 721ESHH,...
  • Page 38: Hydraulics And Electrical

    Parts Identification Hydraulics and Electrical For parts breakdown of item 3 (Spout Deflector Kit - N67193) see page 36. For parts breakdown of item 6 (Rotator, Hydraulic Spout Kit - N67175) see page 37. For parts breakdown of item 10 (Motor with Actuator Valve) see page 34. Hydraulic Snow Blower OM...
  • Page 39 MOTOR, 18.7 CID SIDE PORT (For Models 721EMHH, 201095 781EMHH) 201186 MOTOR, 14.9 CID SIDE PORT (For Models 721ESHH) MOTOR, 24 CID SIDE PORT (For Models 721D1HH, 201187 721D2HH, 781D1HH, 781D2HH, 841D2HH) MOTOR, 29.8 CID SIDE PORT (For Models 781D3HH, 201188...
  • Page 40: Blower Motor And Valve 6.2 (N52175), Valve 9.6 (N124723), Valve 11.9 (N124725), Valve 4.9 (201191), Valve 8.0 (201193)

    Parts Identification Blower Motor and Valve 6.2 (N52175), Valve 9.6 (N124723), Valve 11.9 (N124725), Valve 4.9 (201191), Valve 8.0 (201193) For parts breakdown of item 6 (Actuator Valve - N52173) see page 35. Quantities shown below are for one blower motor and actuator valve assembly. QTY.
  • Page 41: Actuator Valve (N52173)

    Parts Identification Actuator Valve (N52173) QTY. PART # DESCRIPTION N154952 COIL, DEUTSCH 12V #8 N52127 SPOOL, TANDEM CENTER #8 4W3P N52141 BLOCK, 2K CONTROL N52147 SPOOL, PILOT #16 10 PSI N52169 POPPET, RELIEF #8 1000 PSI N52155 SPOOL, RELIEF PO #10 1600 PSI Hydraulic Snow Blower OM...
  • Page 42: Spout Hydraulic Deflector Kit (N67193)

    Parts Identification Spout Hydraulic Deflector Kit (N67193) QTY. PART # DESCRIPTION 4088 PIN, DEFLECTOR 1/2" X 3" TOP 9675 BUSHING, TOP HYDRAULIC DEFLECTOR 8287 CYLINDER, HYDRAULIC 2" X 6" N67210 ELBOW, 04MJIC-08MOR 4089 CLIP, HAIRPIN .093 X 1-5/8" 9676 BUSHING, BOTTOM HYDRAULIC DEFLECTOR 4242 PIN, DEFLECTOR 1/2"...
  • Page 43: Hydraulic Spout Rotator Kit (N67175)

    Parts Identification Hydraulic Spout Rotator Kit (N67175) QTY. PART # DESCRIPTION 9553 SPROCKET, SPOUT ROTATOR 7187-01 KEY, 1/4" WOODRUFF 4200 WASHER, 2.750" OD X 1.750" ID X .1345" 4195 BOLT, 3/8" X 1" GRADE 5 4065 WASHER, 3/8 LOCK 4064 WASHER, FLAT 3/8"...
  • Page 44: Machine Decals And Signs

    Parts Identification Machine Decals and Signs Part No. 4257 NOTE: All safety related decals are also shown in the Safety Instructions Section along with their location on the machine. See “Safety Decal Locations” on page 10. Check and replace any worn, torn, hard to read or missing decals on your machine.
  • Page 45 Parts Identification Machine Decals and Signs (Cont’d) Part No. 4136 Part No. N28010 Part No. N13721 Part No. N26974 Part No. N31306 Part No. N33103 Part No. 4138 Part No. N13517 Hydraulic Snow Blower OM...
  • Page 46 Hydraulic Snow Blower OM...
  • Page 47: Appendix

    Appendix Specifications DESCRIPTION HYDRAULIC SNOW BLOWER Cutting Dimensions Series Model Cutting Width Cutting Height “D” Series 721D1HH 73.66 in. (187.09 cm) 781D1HH 79.66 in. (202.34 cm) 721D2HH 73.66 in. (187.09 cm) 28 in. 781D2HH 79.66 in. (202.34 cm) (71.12 cm) 841D2HH 85.66 in.
  • Page 48: Dimensions

    Appendix Dimensions HYDRAULIC SNOW BLOWER 72 in. Models 78 in. Models 84 in. Models DESCRIPTION 721D1HH 721EMHH 781D1HH 781EMHH 841D2HH 721D2HH 721ESHH 781D2HH 841D3HH 781D3HH Overall Width (A) 75.25 in. 75.125 in. 81.25 in. 81.125 in. 87.25 in. (191.13 cm) (190.81 cm)
  • Page 49: Torque Specifications

    Appendix Torque Specifications Inches Hardware and Lock Nuts Hydraulic Snow Blower OM...
  • Page 50: Metric Hardware And Lock Nuts

    Appendix Torque Specifications (Cont’d) Metric Hardware and Lock Nuts Hydraulic Snow Blower OM...
  • Page 52 Loftness Specialized Equipment, Inc. 650 So. Main Street • PO Box 337 • Hector, MN 55342 Tel: 320.848.6266 • Fax: 320.848.6269 • Toll Free: 1.800.828.7624 Printed in USA © Loftness 2018...

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