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 TB 9-2300-247-40
g.
Apply weld as required and ground flush
d.
Jack up and evenly support the vehicle
with surrounding metal.
frame to gain access to the area to be
repaired.
Provide firm support directly
h.
Fabricate reinforcement plate of 1/4-inch
under the area to be repaired.
cold-rolled steel plate as detailed in Figure
e.
Perform the necessary removal of
components, service lines, electrical wiring,
i.
Position fabricated steel plate over crack
etc., as required to gain access to the
flush with side member.
proposed repair.
43.
Defect. Crack In Upper Flange of Main Side
WARNING
outer flange of the frame main side rail at
Use only effective chip guarding
the junction with the forward crossmember.
equipment, protective equipment and
The crack originated at the back end of the
protective clothing (goggles, shields,
fillet weld indicating a slight weakening at
gloves aprons, etc.) when doing any
that point.
drilling, grinding, or welding. Failure
to follow this warning could result in
NOTE
injury to personnel.
Uneven contact of fabricated steel
f.
Drill 1/8-inch hole at end of crack and v-
plate at the edges of side member or
notch crack using portable grinding tool..
between the mating surfaces will
result in a poor and undependable
g.
Apply weld to crack and grind flush.
weld.
h.
Refer to figure 22 and fabricate "L"
a.
Shape fabricated plate according
to
reinforcement plate using .180-inch SAE
prepared sketches or to suit conditions.
steel plate or equivalent.
b.
Clamp fabricated plate securely to side rail
i.
Apply reinforcement plate to both outer
member.
flanges of side rails, both top and bottom as
shown.
c.
Weld edges of fabricated plate to side rail
member being careful not to disturb the
j.
Thoroughly clean repaired surfaces and
metal at the edge of the upper flange,
surrounding area of repair.
wherever possible.
k.
Prime and paint repair area and
d.
Thoroughly clean repaired surfaces and
surrounding surfaces as specified in TM-
surrounding area of repair.
43-0139.
e.
Prime and paint repaired area and
45.
Defect. Cracked Outer Flange at Body Mount
surrounding surfaces as specified in TM-
43-0139.
flange at the body mounting bracket forward of the
number 2 crossmember. The crack occurs in the top or
44.
Defect. Cracked Side Rail Outer Flange.
bottom flange as a result of an inadequate weld below
the inner and outer side rail top or bottom joint.
the area of the number 2 crossmember.
a.
Cleaning. Thoroughly clean vehicle frame
a.
Thoroughly clean vehicle frame of all oil,
of all oil, grease, dirt, and debris.
grease, dirt, and debris.
b.
General Inspection.
Perform general
b.
Perform general vehicle frame inspection
vehicle frame inspection as specified in
as specified in Chapter 1.
c.
Perform vehicle frame alignment inspection
c.
Perform vehicle frame alignment inspection
as specified in Chapter 3.
as specified in Chapter 3.
20
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