Carrier 69NT40-541-300, Операция и обслуживание, Страница: 119 / 152

6 − 31 T − 318
e. Remove the tape and overlap the edge of the cloth
approximately 6 to 12mm (1/4” to 1/2”) with glue.
f. Epoxy will dry in 45-60 minutes. When completely
cured (12 hours), use sandpaper to smooth edges of
the patch.
6.29.3 Chips and Holes
Chips and holes in the control box are repaired using a
piece of aluminum or stainless steel to cover the
damaged area. The material can be cut to suit and
riveted in place. An adhesive sealant must be used to
make the repair watertight. The adhesive sealant
(Sikaflex 221) is included in Crack Repair Kit Carrier
Transicold part number 76-00724-00SV (see
Table 6-3). Do not use an acetone based silicone
sealant, which can be identified by a vinegar-like odor.
a. To make up the patch, cut a piece of aluminum or
stainless steel so that it will overlap the damaged area
by at least 40mm (1 − 1/2”) on all sides.
b. Choose rivet locations and drill the rivet holes in the
corresponding locations on the control box and patch
piece.
c. Apply the adhesive sealant around the damaged area
to form a seal between the control box and the patch
piece.
d. Rivet the patch piece in place.
e. File smooth any rough edges (including rivets) that
may come into contact with wires.
6.29.4 Inserts
The threaded brass inserts that are molded into the
control box will need to be replaced if the threads
become stripped or if the insert becomes loose. The
inserts and epoxy are contained in repair kit, Carrier
Transicold part number 76-50084-00 (see Table 6-4).
There are 6 different inserts used in the control box.
Refer to Figure 6-35 for the locations of the various
inserts.
NOTE
An epoxy application gun is also needed,
Carrier Transicold part number 07-00391-00.
The damaged insert must be removed from the control
box. Table 6-5 identifies the drill size and drill depth to be
used for each insert. A stop ring should be used on the
drill bit to limit the depth.
a. Center the drill bit on the insert and drill to the pre-
scribed depth.
b. Remove the chips from the drilled hole.
Figure 6-34 Door Hinge Repair
c. Mix the two component epoxy and fill the hole halfway
to the top with epoxy.
d. Press the insert in until it is flush with the surface.
e. Wipe away any excess epoxy. The part is ready for
service after the bond material has hardened and is
tack free (approximately 20 minutes).
6.29.5 Door Hinge Inserts
If the door hinges have been pulled from the control box,
drill and reinstall the hinge as shown in Figure 6-34 and
described in the following steps:
Materials needed:
1. Cut two square pieces of 3mm thick (1/8 inch) alumi-
num or stainless steel approximately 40mm (1 5/8”)
square. These squares will serve as backing plates.
2. Two nuts, bolts (10-24 x 1”) and washers for each in-
sert that needs repair.
a. Drill a 1/4” hole in the center of each square backing
plate.
b. Pass the bolts through the bolts holes in the door
hinge, then through the control box at the location
where the hinge insert pulled out.
c. From inside the control box, slide the backing plates
over the bolts and secure in place with the washers
and nuts.