5-14. AXLE NO. 1 REPAIR (CONT).
CARC paint contains isocyanate (HDI) which is highly irritating to skin and respiratory
system. High concentrations of HDI can produce symptoms of itching and reddening of
skin, a burning sensation in throat and nose and watering of the eyes. In extreme
concentrations, HDI can cause cough, shortness of breath, pain during respiration,
increased sputum production and chest tightness. The following precautions must be
taken whenever using CARC paint:
NEVER weld or cut CARC-coated materials.
DO NOT grind or sand painted equipment without high-efficiency air purifying
respirators in use.
BE AWARE of CARC paint exposure symptoms; symptoms can occur a few days after
initial exposure. Seek medical help immediately if symptoms are detected.
Unsafe welding practices can cause serious injury from fire, explosions, or harmful agents.
Allow only authorized personnel to weld or cut metals and follow safety precautions in
TC 9-237. Protective clothing and goggles must be worn; adjustable protective equipment
used and suitable fire extinguisher kit near by; and requirements of TC 9-237 strictly followed
or serious injury or death to personnel could result.
Welds are not permitted near the top or bottom center lines of the axle beams. Welding in
these areas could cause damage to equipment.
On all axles vertical welds are not permitted further than 1 in. (25.4 mm) below the horizontal
center line of the axle beam. Welding in these areas could cause damage to equipment.
On all axles, horizontal welds are not permitted further than 1 1/2 in. (38.1 mm) below the
horizontal center line of the axle beam. Welding in these areas could cause damage to
Minor welding repair may be
made to brackets of axle, refer to
TC 9-237 for proper welding
Inspect for minor cracks to axle brackets.
Using a wire scratch brush, remove paint
from area four in. (102 mm) around welding
Weld minor cracks as required.