Stow DFG Series manual Follow all safety precautions for the safety solvent

ASSEMBLY INSTRUCTIONS/OPERATIONS

CAUTION

Follow all safety precautions for the safety solvent.

2)Remove the cap screw from the unit. Clean the newly exposed areas of the insert and SCRAPE- R-TACH unit with the safety solvent. Clean and inspect the threaded holes found in older units for excess wear. New style SCRAPE-R-TACH units feature a through hole design.

3)Index the insert to expose a new edge. Reinstall the capscrew and apply a torque value that properly seats the insert firmly against the body of the unit.

CAUTION

An insufficient seating torque value will allow the insert to become loose from the unit body, resulting in premature component wear and improper scraping action. An excessive torque value will strip the threads of the capscrew or unit body.

4)Determine that the unit body is free to rotate about the 5/16 inch diameter capscrew that retains the body to the unit. A body that does not freely rotate indicates that a material build-up exists between the rubber mount and retaining capscrew exits. This build-up must be removed by disassembling the body from the unit and cleaning all contact areas with the safety solvent. FIGURE 20.

The SCRAPE-R-TACH system is designed to be installed with the edge of the tungsten carbide inserts facing the direction of rotation. Markings are provided to indicate proper direction of rotation.

CAUTION

Installing the SCRAPE-R-TACH system with the tungsten carbide inserts facing opposite the rotation direction will not deliver satisfactory material removal rates and result in premature component wear requiring early replacement.

Multi-Segmented, Dry Diamond Disc

Many times increased concrete removal rates can be achieved with the use of multi-segmented, dry diamond discs. FIGURE 21. These discs are designed to operate dry or can also be utilized with water. If the wet option is chosen, an external source for providing water must be devised. No provision for water use is provided with the SURFACE GRINDER. Typical discs are approximately 10 inch diameter and feature up to 20 diamond segments that are welded or brazed to each assembly.

To install the multi-segmented, dry diamond discs, the standard, aluminum, multi-accessory discs are first removed from the SURFACE GRINDER. The diamond discs fasten directly to the gimbal heads with 3/8 inch diameter x 1 inch long Allen head capscrews. FIGURE 22. The rear wheel assembly is then placed in the lowest position to compensate for the thickness variance of the diamond discs. FIGURE 23.

FIGURE 21

FIGURE 20

DFG-SERIES SURFACE GRINDERS OPERATION AND PARTS MANUAL REV #3 (07/13/06) PAGE 25