PREVOST H3-41 Maintenance Manual page 837

WHEN SHOULD A STRUCTURE INSPECTION BE CARRIED OUT?
Vehicles operating in harsh environments without an appropriate corrosion protection compound applied
to the front and rear sub-frames, drive axle cradle and tag axle could be subject to corrosion. If parts of the
tag axle or front and rear sub-frames structures present metal flaking, separation of metal layers, loss of
material, perforation, etc. then they should be inspected in order to confirm that the minimum wall
thickness remains (
FIGURE 2
FIGURE 2: METAL FLAKING. ACCUMULATED SAND AS
SHOWN ON THE IMAGE SHOULD NOT BE LEFT IN PLACE
FIGURE 4: METAL FLAKING
ACCUMULATED MATTER WILL RETAIN WATER THUS
CREATING CONDITIONS
CORROSION
to ).
FIGURE 5
ON TAG AXLE -
PROMOTING ADDITIONAL
FIGURE 3: METAL FLAKING AND ACCUMULATED SAND
FIGURE 5: HEAVILY CORRODED
TAG AXLE. THIS IMAGE SHOWS THE SPINDLE MOUNTING
PLATE SEPARATED FROM THE REST OF THE TAG AXLE
MI15-18 / Page 3 / 6
COACH WITH BROKEN
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