Quantcast GENERAL INSTRUCTIONS FOR CORROSION PROTECTION OF THE M871A3 SEMITRAILER

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TM 9-2330-326-14&P
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OPERATING UNDER UNUSUAL CONDITIONS (Cont.)
8.
Fording.
CAUTION
Do not exceed fording depth of 30 inches or damage
to the equipment may result.
Do not submerge ECU.
Before Fording:
a.
Before entering water, check bottom surface conditions. If bottom surface is too soft, do not ford.
b.
Protect cables and terminals by spraying with ignition insulation compound.
c.
ABS ECU must not be submerged in water (42 inches, ECU height).
After Fording:
a.
After coming out of water, apply brakes a few times to help dry out brake linings. Make
sure semitrailer brakes are working before driving at normal speeds.
b.
Drain or dry all areas where water has collected, if mission allows.
c.
Lubricate all unpainted surfaces. See lubrication chart, Appendix C, if mission allows.
d.
Zerk fittings and hubs should not be affected by fording. Oil can points should be lubricated
as specified by LO, Appendix C, if mission allows. There is no need to tear down wheel
ends or clean and re-pack bearings.
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GENERAL INSTRUCTIONS FOR CORROSION PROTECTION OF THE M871A3 SEMITRAILER
To insure a long operational life for the M871A3 Semitrailer the following is present to assist
maintenance personnel. This is not meant to supercede or replace current support operations or
authorized publications.
The M871A3 production Semitrailer is not undercoated at Fontaine Trailer Company prior to delivery.
Worldwide operations present many environmental impacts on the semitrailer from salt water to
ice/snow melt chemicals. Areas of conflict have their own ways of ventilating and damaging the
semitrailer. All these impacts add up to shortened operational life.
TIPS:
a. Keep the semitrailer clean, which will allow for more complete inspection of welds and components.
b. Use low-pressure water, cleaning detergent and brushes for cleaning.
c. Flush out undercarriages, suspensions, wheel ends with clean low-pressure water if operations in a
salt environment, especially fording, as soon as the mission allows.
d. Keep debris out of wheel ends and twistlock pockets.
e. Drain air tanks after operation to keep moisture and debris out of air system.
f. Annually clean deck wood and roll/spray on boiled linseed oil or a good commercial UV wood
protectorate. Apply to top areas of upper and lower deck wood.
g. Protect all exterior areas from rust, clean off rust, prime metal and paint area.
h. Application of 10 wt. Oil at oil can points as specified by LO will help protect components and
insure they will work when needed.
i. Keep bolster plate drain holes free of grease and debris so they drain/air out freely.
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