Figure 4-6. Drilling Cargo Body Floor (Vl151 and M718A).
i. Drilling Underbody (M151A2, M718A1 and
(1) Drill all holes as shown.
When cleaning, water may be discharged in
(2) Holes V and W will penetrate two layers of
excess of 1200 psi (8274 kPa) from high
metal on the M151A2 and the M718A1. They will
pressure water equipment. Serious injury
penetrate only one layer on the M825 due to the rear
could result. Eye protection must be worn
cargo reinforcement having been removed.
to prevent injury.
(3) Two holes X are visually located on the
bottom surface of the rear crossmember, directly in line
with the outer bolts for the rear bumper guards.
Steam cleaning will not be used.
(4) Holes D and F are drilled in the rear facing
a. Wash the interior of framerail structures through
edge of the front crossmember. They are drilled about
drilled access holes to remove mud, dirt, and rust. Use
1 inch (2.5 cm) from the angles.
of a high pressure washer will facilitate this process.
Observe the water flushed through the rails to
(5) Holes Y and Z are drilled at the bottom of
determine when the structure is clean.
the inner and outer suspension arm brackets.