Multiquip DFG Series manual Maintenance/Service

Page 42

MAINTENANCE/SERVICE

1)Position the SURFACE GRINDER on a suitable work surface with the V-belts approximately at waist level.

2)Remove the rubber latches and slide the belt guard away from the engine/electric motor until it clears the catch mechanism. Remove the belt guard from the main frame. Clean the inside of the belt guard with an appropriate solvent.

Check for signs of wear and damage. Secure in a proper storage area.

CAUTION

Observe all applicable safety precautions for the solvent.

3)Using the 1/2-inch wrenches, loosen the engine/motor mounting plate cap screws.

4)With the same wrenches, rotate the engine take- up cap screws counterclockwise to loosen the V- belts and allow the engine/electric motor to slide toward the front of the main frame. FIGURE 43.

FIGURE 43

5)Remove the worn V-belts. Inspect the engine/electric motor and transmission pulleys for wear and damage. Install the replacement belts, P/N 29018-012 in pairs. The SURFACE GRINDER utilizes two V-belts. Always install replacement belts in matched pairs. Never replace just one of the V-belts.

CAUTION

Do not operate the SURFACE GRINDER with only one V-belt installed. One V-belt is not capable of transmitting proper horsepower and torque levels to the multi-accessory discs.

a) Do not install replacement belts if the pulleys have excessively worn grooves. Such pulleys should be replaced to insure proper belt fit. Operating the V-belts in worn pulley grooves will accelerate wear, reduce horsepower and torque levels and significantly reduce component service life.

b)A V-belt should never be forced over a pulley. More belts are broken from this cause than from actual failure in service.

c)Keep the belts as clean and free of foreign material as possible. Do not use belt dressing

6)The centrifugal clutch assembly utilized on both the gasoline engine powered and Propane converted SURFACE GRINDERs is designed to deliver an extended service while requiring minimal service. However, long term use of the SURFACE GRINDER can allow the accumulation of fine dusts and powders within the clutch assembly. These dusts and powders can dramatically reduce the capacity of the the

clutch drum bearing, resulting in the following operational characteristics:

a)When operating the engine at idle speed, the centrifugal clutch assembly will not fully disengage, allowing the multi accessory discs to rotate at low speed.

b)When the engine is advanced to and/or from the idle speed position, erratic machine movement or "grinding" and "thrashing" noises from the clutch area are detected.

In many cases, clutch assembly removal, a cleaning of the bearing surfaces and reassembly will solve the problem.

7)Rotate the take-up cap screws clockwise until the V-belts have enough tension to not allow them to fall off the centrifugal clutch and/or pulleys.

8)Using the 9/16-inch wrench, remove the retaining cap screw from the engine crankshaft. Using the 5/32 inch allen wrench, loosen the two set screws located near the snap ring. The clutch can now be removed from the engine crankshaft. FIGURE 44.

9)The centrifugal clutch is comprised of a rotor/shoe assembly, a drum/pulley assembly, a thrust washer and retaining snap ring.

a) Using the snap ring pliers, remove the snap ring from the clutch assembly. FIGURE 45.

DFG-SERIES SURFACE GRINDERS

OPERATION AND PARTS MANUAL REV #4 (05/28/09)

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Contents Electric Gasoline Page Table of Contents Table of Contents Page Parts Ordering Procedures Page Page Operator Instructional Data Sheet Safety Precautions Safety Precautions Operation MAINTENANCE, Repair and Storage Surface GrinderSafety Precautions Assembly Removing the Surface Grinder from the PalletApplication All Models Installing the SG24-1000 Safety and Dust Shield Assembly KIT Applications DFG/G Surface Grinder Before Starting the EngineFilling the Engine Crankcase with OIL Filling the DFG/G Series Engine Fuel TankTheory of Operation MULTI-ACCESSORY Attachments and ApplicationsOperation Grinding StonesTungsten Carbide Grinding Block Scarifier BlocksStar Flail Beam FlailPentagonal Flail Spacer WasherWire brushes Scarifier Block BushingFloor Brushes SCRAPE-R-TACH Industrial Floor Coatings Removal SystemAssembly INSTRUCTIONS/OPERATIONS Follow all safety precautions for the safety solvent Diamond Segment Block Assembly INSTRUCTIONS/OPERATIONS From the Counterrotating Discs Assembly INSTRUCTIONS/OPERATIONS Adjusting the Operator Handle HEIGHT. Application All Models Assembly INSTRUCTIONS/OPERATIONS Assembly INSTRUCTIONS/OPERATIONS Operating the Surface Grinder on the Jobsite Result in Property Damage AND/OR Personal Injury FiureAssembly INSTRUCTIONS/OPERATIONS Stopping the DFG/G Series Gasoline Powered Surface Grinder Application All Models Early Age GrindingDefinitions of floor flatness and levelness How to Define Surface Regularity Defined Versus Random Traffic PatternsTR 34 tolerances for defined traffic floors Assembly INSTRUCTIONS/OPERATIONS MAINTENANCE/SERVICE Maintenance/ServicePreventative Maintenance Check LIST. Application All Models Observe all applicable safety precautions for the solvent MAINTENANCE/SERVICE Checking V-BELT Tension and Alignment MAINTENANCE/SERVICE Lubrication Requirements Electric Motor Service Engine ServiceTroubleshooting TroubleshootingAccelerated V-BELT Wear Operational PROBLEMS. Application All ModelsUneven MULTI-ACCESSORY Attachment Wear Accelerated Bearing Wear AND/OR FailureStorage StorageSpecifications GeneralPage Explanation of Code in Remarks Column Units Electric Motor Model Suggested Spare PartsUnits Gasoline Engine Qty DescriptionOperator Handle ASSY. Electric Operator Handle ASSY. ElectricCABLE, Long HANDLE, Operator UniversalHP Motor only CABLE, ShortOperator Handle ASSY. Gasoline Operator Handle ASSY. GasolineCABLE, Throttle KNOB, Throttle ControlQTY Remarks Electric Motor Assy Electric Motor AssySCREW, CAP 5/16-18 UNC X 1 Plated MOUNT, Electric MotorHP 50 HZ Motor WASHER, Flat 5/16, PlatedGasoline Engine Assy Gasoline Engine AssyCLUTCH, Pulley Assy ENGINE, Honda 11 H.PMOUNT, Gasoline Engine CAP, OIL DrainWheel Assy Wheel AssyAXLE, Plated ARM, SwingWheel WASHER, Flat ¾ PlatedTransmission Assy Transmission AssyBEARING, Flange FRAME, MainCOVER, Transmission WASHER, Lock 5/16 PlatedHead Assy Head AssyBAR, Mounting DISC, MULTI- Accessory LHDISC, MULTI- Accessory RH DISC, MountingSafety and Dust Shield Assy Safety and Dust Shield AssyWASHER, Fender 1/4 , Plated Skirt AssemblySKIRT, Grinder STRAP, SkirtScarifier Assy Scarifier AssyNUT, HEX 3/8 UNC, Nylock Plated HousingBushing WEDGE, PlasticSCRAPE-R-TACH Assy Spacer HOLDER, InsertMOUNT, Rubber INSERT, Tungsten CarbideGrinding Block Assy Aggress Grinding BlockRing General PurposeDecals DecalsDECAL, Operation Decals Part Name QTY RemarksDECAL, Warning DECAL, ThrottlePayment Terms Page HERE’S HOW to GET Help

DFG Series specifications

The Multiquip DFG Series stands out in the equipment industry due to its powerful performance and advanced technology tailored for a variety of applications. Engineered for durability and efficiency, the DFG Series is specifically designed to meet the demanding needs of contractors, making it an ideal choice for construction, demolition, and industrial projects.

One of the hallmark features of the DFG Series is its robust construction. Built with high-quality materials, these models are engineered to withstand harsh working conditions, providing longevity even in the toughest environments. The frames are designed for superior strength, while the engine components are optimized for reliability, ensuring that the equipment remains operational when it's needed the most.

In terms of performance, the DFG Series is equipped with state-of-the-art engines that deliver exceptional power while maintaining fuel efficiency. This balance reduces operating costs and minimizes environmental impact. Users can benefit from increased productivity as these machines are capable of handling heavy loads and challenging tasks with ease.

One of the standout technologies in the DFG Series is the advanced hydraulic system. This system allows for smooth and efficient operation, enabling the equipment to perform a wide range of tasks from lifting and moving materials to grading and leveling. The hydraulics are engineered for precise control, providing operators with enhanced maneuverability and flexibility on job sites.

Additionally, the DFG Series incorporates ergonomic design features aimed at enhancing user comfort and safety. The operator's cabin is spacious and well-appointed with intuitive controls, allowing for easy operation even during long hours of use. Safety is a priority, with features such as reinforced safety barriers, automatic shut-off systems, and well-placed visibility options to ensure that operators remain aware of their surroundings.

Maintenance is made simple with the DFG Series, which is designed with accessibility in mind. Key components are easily reachable, reducing downtime during servicing and ensuring that the equipment remains in peak operating condition.

Overall, the Multiquip DFG Series blends power, technology, and user-friendly design to provide a versatile solution for today's demanding construction and industrial applications. Whether tasked with heavy lifting, demolition, or ground preparation, the DFG Series remains a reliable choice that will exceed expectations.
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