TM 5-3820-233-35/2
CHAPTER 1
INTRODUCTION
Section I. GENERAL
c. Report
all
equipment
improvement
1. Scope
recommendations as prescribed by TM 38-750.
a. These instructions are published for the use of
2. Record and Report Forms
direct and general support and depot maintenance
personnel maintaining the Iowa Manufacturing Model
a. DA Form 2258 (Depreservation Guide of Engineer
2A-2B Portable Secondary Crushing and Screening
Plant. They provide information on the maintenance of
Equipment).
the equipment which is beyond the scope of the tools,
equipment, personnel, or supplies normally available to
b. For other record and report forms applicable to
using organizations.
direct and general support and depot maintenance, refer
to TM 38-750.
b. Report
of
errors,
omissions,
and
Note.
recommendations for improving this publication by the
Applicable forms, excluding standard
individual user is encouraged. Reports should be
Form 46 (United States Government
submitted on DA Form 2028 (Recommended Changes
Motor
Vehicles
Operator's
to DA Publications) and forwarded direct to the
Identification Card) which is carried
Commanding General, U. S. Army Mobility Equipment
by the operator, shall be kept it in a
Command, ATTN: AMSME-MPP, 4300 Goodfellow
canvas bag mounted on the
Boulevard, St. Louis, Missouri 63120.
equipment.
Section II. DESCRIPTION AND DATA
b. Capacity of Plant.
3. Description
Rating
35 tons per hour of 1 1/2"
A general description of the Portable Secondary
material @ 80% crushed
Crushing and Screening Plant, the location and
(Based on material weight of
description of the identification and instruction plates,
100 lbs. per cubic foot)
and information on the differences in models are
contained in the Operator and Organizational
c. Engine
Maintenance Manual. The repair and maintenance
instructions are described in appropriate sections of this
manual.
Manufacturer
General Motors
Model
4031C
Series
71
4. Tabulated Data
Number of cylinders
4
Displacement
284 cubic inches
a. General. This paragraph contains all the overhaul
Bore
4 1/4 inches
data pertinent to direct and general support and depot
Stroke
5 inches
maintenance personnel. A wiring diagram (fig. 1) is also
Compression ratio
17 to 1
included.
Firing order
1-3-4-2
Number of main bear-
5
ings.
1-1
