Direct Glazing (cont'd)
Removing the Broken Glass and Old Sealant (cont'd)
3 Cut out the old sealant, leaving approximately 1 to 2
mm on the cab frame. There are several tools and
techniques for doing this:
a Pneumatic Knife A provides one of the easiest
methods of removing the sealant around laminated
glass. The tool, powered by compressed air, should
be sourced locally.
Note: This tool must not be used on toughened glass (see
WARNING on previous page).
(i) Press the handle to start the knife blade
oscillating.
(ii) Insert the knife blade into the sealant.
(ii) Slowly move the knife along the sealant with the
blade positioned as close to the glass as
possible. Do not allow the knife blade to overheat
or the sealant will melt.
b Braided Cutting Wire and Handles B. This method
uses a 3-core wire, a wire starter tube and two
handles, refer to Service Tools.
(i) Insert the steel tube C into the old sealant on the
inside of the glass.
(ii) Insert the braided cutting wire D down the centre
of the steel tube. If necessary, from the outside,
cut out local sealant at the point of the tube to
gain access to the wire.
(iii) Using suitable pliers, pull the cutting wire through
the sealant to the outer side of the glass.
(iv) Secure each end of the braided cutting wire in the
special handles E.
(v) Move the cutting wire backwards and forwards in
a sawing motion and at the same time gently
push or pull the wire to cut through the old
sealant.
c Cut-out Knife F. The cut-out knife can be used as a
left handed or right handed tool. For the knife and its
replaceable blades, refer to Service Tools.
(i) Insert the knife blade into the sealant.
(ii) Make sure that the blade of the knife is against
the glass as shown at G.
(iii) Use the 'pull-handle' to pull the knife along and
cut out the old sealant.
21 - 2
Section B Body & Framework
9803/7130
Section B
21 - 2
Issue 1
Service Procedures
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