1. Trim the COLLAR (1) so that the SKIRT (2) of the Dust Muzzle extends 1/16 to 1/8 inch beyond the surface of the abrasive. The easiest way to trim the COLLAR is by sanding it with the angle sander. DO NOT use shears or cutting tool to trim the collar as this can cause stress cracking. Remove the COLLAR in small steps, using the reference lines on the COLLAR to gauge your progress.
Other notes on installation.
Vertical weak spots have been built into the COLLAR of the Dust Muzzles that allow the user to make small adjustments to the fit of the Dust Muzzle. Most tools are made from castings which are not exact. If the bearing housing of your tool is slightly too large or too small, you may cut along these vertical lines and stretch or compress the Dust Muzzle COLLAR to achieve a better fit. In almost all cases, the Dust Muzzle we recommend will fit your tool perfectly.
|Installation Instructions for the Dust Muzzle
Installation Instructions for the 78AD Adapter
Adapters for Large Dust Muzzles
Some grinders do not have a collar to which the Dust Muzzle can be clamped. Among these are some models of Milwaukee , Sioux and DeWalt grinders. A plastic adapter (part 78AD) is available which creates an artificial collar to which the Dust Muzzle may be fastened. When the 78AD is installed on the tool, the appropriate Dust Muzzle is either the 729 (7" backup pad) on the 829 (8" backup pad or 7” diamond cup wheels).
Hose adapters for small Dust Muzzles
When ordering Dust Muzzles for the small 2 and 3 inch die grinders, a special hose adapter (part# 234AD) is available. This adapter will connect a standard 1.25" vacuum hose to the 3/4" exhaust outlet on the smaller Dust Muzzles.