METAL BODY REPAIR - OD1653 - LESSON 2/TASK 1
(1) To prevent the abrasive grains from the cast iron wheel being flung
over the shop area, it is suggested that a rubber inner tube be tacked
around the inside of the roughing box (about onehalf inch above the
roughing wheel). This allows free passage of glass beyond edges of the
roughing box for working edges of bevels without interference.
(2) If glass is to be rough ground oily, seam or chamfer both sharp
edges first; then run glass across the wheel from left to right, holding the
glass perfectly vertical if a flat edge is desired. Do not seam or chamfer
the edge first, but simply roll the glass back and forth as it is being
drawn from left to right, from an angle of about 45 degrees away from you to
straight up. Do not roll the glass all the way toward the operator as this
will chip the glass edge. When rounded on one side, turn the glass around
and repeat the operation. Use the full face of the wheel to prevent
grinding grooves in the face. When grooves form in the wheel, the wheel
should be replaced.
(1) Glass, in terms of its installation, is either stationary (the
windshield, some quarter windows, and the rear window) or it is moveable
(door window, tailgate window and some quarter windows). In addition to the
customary care one must take when handling glass, to protect it from impact,
there are several general precautions which should be observed whenever a
replacement is to be made.
(a) Check Parts. Be certain that the replacement part is the correct
part. The size and contour of the glass must be an exact fit in the opening
into which it is to be installed. Thus, it pays to take the time to verify
the piece before starting the job.
(b) Use Protective Covers. Over all adjacent body surfaces, to
minimize cleanup and avoid damage to paint finishes and fabrics, use a
cover. These covers may also serve as a protection against chipping the
glass or otherwise damaging the edges.
(c) Inspect Hardware. Inspect for bends or obstructions in the pinch
weld flanges, glass run channels, frames, regulators, or whatever components
may be involved in holding or moving the