Stow DFG Series manual Maintenance/Service

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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 #3 (07/13/06)

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Contents Electric Gasoline Page Table of Contents Table of Contents Page Parts Ordering Procedures Here’s how to get helpStow Construction Equipment 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 BlocksCost 1 Productivity 3 Service Life Star FlailBeam Flail Pentagonal Flail Cost 1 Productivity 5 Service LifeCost Productivity Service Life 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 StorageMaximum Grinding Width SpecificationsVacuum Cleaner Connection Diameter Typical Operator Handle HeightPage Part Name RemarksXxxxx only Not Used on Suggested Spare Parts Units Gasoline Engine Units Electric Motor ModelQty Description Operator Handle ASSY. Electric Operator Handle ASSY. ElectricCABLE, Long HANDLE, Operator UniversalHP Motor only CABLE, ShortOperator Handle ASSY. Gasoline Operator Handle ASSY. GasolineQTY Remarks CABLE, ThrottleKNOB, Throttle Control LEVER, Throttle CONTROL, W/CABLE & KnobElectric 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, Throttle Sfdclsdp DECAL, Stow LargePayment Terms Special Expediting ServicePRICING, Rebates Specifications Freight PolicyPage Heres HOW to GET Help FAX