From: Wayne Harris (papercu@hotmail.com)
Date: Tue Dec 28 2004 - 08:05:50 PST
>From the -10
a. The 5-ton, 6x6, M939, M939A1, and M939A2 series vehicles are designed for
use on all types of roads, highways, and cross-country terrain. These
vehicles also operate in extreme temperatures such as arctic weather
conditions.
b. The M939 series vehicles are an improved version of the M809 series. The
improvements make M939 series vehicles more reliable and easier to operate.
The major improvements are:
WARNING
This vehicle has been designed to operate safely and efficiently within the
limits specified in this TM.
Operation beyond these limits is prohibited IAW AR 70-1 without written
approval from the Commander, U.S. Army Tank-automotive and Armaments
Command, ATTN: AMCPEO-CM-S, Warren, MI 48397-5000.
(1) Automatic Transmission
(2) Improved Power Steering System
(3) Complete Airbrake System
(4) Improved Cooling System
(5) Improved Electrical System
(6) Three-Crew Member Cab
(7) Tilt Hood
(8) Hydraulically Powered Front Winch
c. The M939 series vehicles use 11:00 x R20 tires and have rear tandem
duals, while the M939A1 and M939A2 series vehicles use 14:00 x R20 super
sized tires and rear tandem singles. The mounted tires and spare on each
vehicle are non-directional in design and use.
d. The M939 and M939A1 series vehicles employ the Cummings (NHC 250) 250
horsepowered engine, while the M939A2 series vehicles use a smaller,
turbocharged Cummings (6CTA8.3) 240 horsepowered engine. The M939A2 series
vehicles additionally have the Central Tires Inflation System (CTIS) which
allows for greater tactical mobility.
e. All M939/A1/A2 series vehicles utilize the same automatic transmission,
are equipped with a spare tire mount at the rear of the cab, have removable
canvas cab tops, and are supplied with pintle hooks and air connections used
for towing.
f. The 5-ton load limit rating of M939/A1/A2 series vehicles does not mean
these vehicles are limited to 5-ton payloads. A vehicle rating only
indicates the maximum amount of cargo weight the vehicle axles and frame can
withstand when operating under the worst cross-country conditions.
and then there are these 900 with the NTC-400, BTY these uses the Jake
brake, Jacobs® brake:
The M915 is a line haul truck tractor used to haul semitrailers on Class I
good roads only (30,000 pounds on 5th wheel).
The M916 tractor is used to transport medium weight payloads/semitraiiers
(up to 40,000 pounds on 5th wheel) on and off roads.
The M917 truck is a 20-ton dump truck with a hydraulic hoist used to haul 12
cubic yards of aggregate and similar materials on and off road (1 5.2 cubic
yards heaped and 19.6 yards with side boards).
The M918 is a bituminous distributor truck used for spraying liquid asphalt.
The M918 can be operated on and off roads.
The M919 truck is a Concrete-Mobile® mixer truck used to transport up to 8
cubic yards of dry concrete material and mix at construction sites. The M919
can be operated on and off roads.
The M920 tractor is used to transport heavy payload/semitrailers (up to
40,000 pounds on 5th wheel) on and off roads.
Wayne
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