CHAPTER 1
INTRODUCTION
Section I. GENERAL
1-1. Scope
a. This manual contains instructions for the use of
a. DA Forms and records used for equipment
direct support, general support and depot maintenance
maintenance will be only those prescribed in TM 38-750.
personnel maintaining the craneshovel basic units,
b. Report
models 855BG-2 non-winterized, 855BG-2 winterized,
of
errors,
omissions,
and
and 855BG-3 nonwinterized, as allocated by the
recommendations for improving this publication by the
Maintenance Allocation Chart. It provides information on
individual user is encouraged.
Reports should be
maintenance of the equipment which is beyond the
submitted on DA Form 2028 (Recommended Changes
scope of the tools, equipment, personnel, or supplies
to DA Publications) and forwarded direct to the
normally available to organizational maintenance.
Command General, U. S. Army Mobility Equipment
Command, ATTN: AMSME MPP, 4300 Goodfellow
b. Report
all
equipment
improvement
Boulevard, St. Louis, Mo., 63120.
recommendations as prescribed by TM 38-750.
1-2. Forms and Records
Section II. DESCRIPTION AND DATA
Cooling ...................................... Liquid cooled
1-3. Description
Rotation at flywheel end ............ Counterclockwise
A general description of the crane-shovel basic unit and
Exhaust spring length with......... 2 3/8 + 1/32 -0
information pertaining to the identification plates are
valve in closed position.
contained in TM 5-3810-201-12.
A more detailed
Exhaust spring load with............ 105 lb (pound) (s)
description of specific components and assemblies are
valve in closed position.
contained in the applicable chapters of this manual.
Engine classification and rating (model
(2)
1-4 Tabulated Data
D33STA).
Manufacturer .......................... Caterpillar
a. General.
This paragraph contains all
Model...................................... D333TA
maintenance data pertinent to direct support, general
Cycle ...................................... 4
support and depot maintenance personnel. The wiring
Bore ........................................ 4.5 in.
diagram is located in TM 5-3810-210-12.
Stroke ..................................... 4.5 in.
Total displacement ................. 522 cu in.
b. Engine Classification and Rating.
Horsepower (hp) ..................... 190 HP (without fan)
(1) Engine classification and rating (model
Number of cylinders ............... 6
Firing order- ............................ 1-5-3-6-2-4
687C-18-ES).
Cooling ................................... Liquid cooled
Rotation at flywheel end ......... Counterclockwise
Manufacturer...........................Harnischfeger
Full load rpm ........................... 2,000
Model ......................................687C-18-ES
High idle rpm .......................... 2,180
Cycle.......................................2
Low idle rpm ........................... 600
Bore ........................................4.5 in. (inch) (es)
Stroke .....................................5.5 in.
c. Generator and Alternator Specifications
Total displacement..................522 cu in. (cubic inches)
(1) Generator specifications (for engine model
Horsepower ............................190 at 1,700 rpm (revolutions
687C-18-ES).
per minute)
Compression ratio...................16 to 1
Manufacturer .......................... Delco-Remy
Number cylinders ....................6
Model...................................... 1117478
Firing order .............................1-6-2-4-3-5
AGO 20051A
1-1
