TM-5-2330-378-14-P

SEMITRAILER, LOWBED: 40 TON CONSTRUCTION EQUIPMENT TRANSPORTER M870 AND M870A1

TECHNICAL MANUAL; OPERATOR'S, UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

JUNE 1999
TM-5-2330-378-14-P

  TM-5-2330-378-14-P - Page 61 of 524

TM 5-2330-378-14&P
2-16.
OPERATION IN MUD AND SNOW (continued).
b.
Reduce tire pressure to 35 psi (241.3 kPa) while operating in soft mud, if practical.
C.
If one or more wheels sink into mud, you may need to jack up mired wheel and put planking or matting
under it.
d.
After each operation
remove ice, snow, and mud from underneath semitrailer
and from hoses, lines, tubes,
and electrical
connections.
e.
Returntire
pressureto
normal (90 psi [620 kPalforthe
M870AI or85 psi [586 kPa]forthe
M870) after operation
in mud.
2-18. OPERATION IN SALTWATER AREAS.
a.
Wash salt deposits from all equipment
with fresh water.
b.
Moist and salty areas can destroy the rust-preventative
qualities of oils and greases. When equipment
is
active, exposed surfaces should be cleaned and lubricated daily. Refer to Appendix J for proper lubrication
in high humidity and saltwater areas.
C.
When equipment
is inactive, unpainted parts should be coated with lubricating oil (refer to Appendix J). All
covers and caps should be in place.
2-18.
OPERATION ON ROCKY TERRAIN.
a.
Tires must be fully inflated (90 psi [620 kPa] for the M870Al
or 85 psi [586 kPa] for the M870) when moving
on rough or rocky terrain.
Underinflated
tires will cause internal ruptures of tires and damage to tubes.
b.
Before driving over stumps or rocks, make sure the semitrailer can clear them.
Such objects can damage
components
on the underside of the semitrailer.
Beware of low hanging limbs that can damage cargo.
C.
Be sure you have a serviceable
spare tire and rim assembly because there is a greater than usual chance
of tire puncture.
2-19. FORDING.
a.
Before Fording
1.
Refer to operating instructions
in towing vehicle technical manual for information
on fording operations.
Towing vehicle fording instructions are also applicable.
2.
The fording depth of M870/M870A1
semitrailer is limited to the fording depth limit of the cargo or the
towing vehicle, whichever is lower.
3.
Before entering the water, check bottom surface conditions.
If bottom is too soft, do not ford.
4.
Cables and terminals must be protected by spraying with silicone compound
(item 17, Appendix F).
2-31


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