Glass Replacement; Adhesive-Bonded Windows; Recommended Tools/Supplies - Komatsu 930E-2 Shop Manual

GLASS REPLACEMENT

ADHESIVE-BONDED WINDOWS

Recommended Tools/Supplies

• Pneumatic knife,
or a piano wire type cutting device
• Heavy protective gloves
• Safety eyeglass goggles
• Glazing adhesive* & application gun
*NOTE:
®
SikaTack -Plus Booster adhesive is advertised
to achieve full cure in two (2) hours, is not climate
dependent, does not require black glass primers,
can be applied with a standard gun, and meets
FMVSS 212/208 in one (1) hour.
Sika Corporation
22211 Telegraph Road,
Southfield, MI 48034
If another adhesive is used, be certain to follow
all the manufacturer's instructions for use, includ-
ing full allowances for proper curing time.
• SM2897 glass installation bumpers
(4 - 6 per glass piece)
• Window glass (Refer to Parts Catalog)
Replacement Procedure
The first concern with all glass replacement is
SAFETY! Wear heavy protective gloves and safety
eyeglass goggles when working with glass.
1. Using a permanent marker, mark all the edges of
the glass to be replaced on the cab skin
(all windows, except the front windshield piece,
rear cab window, and door windows).
All edges must be marked in order to apply the
adhesive properly.
The glass locating edges are as follows:
a. Left rear side glass (8, Figure 2-1); mark the
front and bottom edge locations.
b. Front left & right side glass (9); mark the rear
and bottom edge locations.
2. Using either a pneumatic knife, or a piano wire
type cutting device, carefully remove all of the
remaining glued-on glass.
N02015 4/00
3. Carefully clean and remove all broken glass chips
from any remaining window adhesive.
The surface should be smooth and even.
NOTE: Removal of all old ahesive is not required;
just enough to provide an even bedding base.
4. Apply 4 to 6 SM2897 glass installation bumpers
(8), equally spaced around the previously marked
glass perimeter, approximately 0.75 in (19 mm)
inboard from where the edge of the glass will be
when installed.
5. Clean the glass and prepare the black primer coat
according to the adhesive supplier's instructions.
6. Apply a continuous even bead of the glazing
adhesive (approximately 0.38 in./10 mm dia.) to
the cab skin at a line 0.50 - 0.63 in. (13 - 16 mm)
inboard from the previously marked final location
of the glass edge (when applied to the cab).
NOTE: Be careful not to place this bead too far
inboard, as it will make any future replacement
more difficult.
7. Carefully locate the glass in place with the black
masking side towards the adhesive. Carefully
press firmly, but not abruptly, into place.
8. Using a wooden prop and furnace/duct tape, hold
the glass in place, at least one (1) full hour before
moving the vehicle. Otherwise, vibration will
weaken the bond.
NOTE: If SikaTack
used, be certain to follow all the adhesive manu-
facturer's instructions for use, including full allow-
ances for proper curing time.
The curing time may be much longer than the one
(1) full hour mentioned above.
Truck Cab
®
-Plus Booster adhesive is not
N2-13