Section 1. GENERAL
c. Numbers in parenthesis following no-
menclature callouts on illusrations indicate
a. These instructions are published for use
quantity; numbers preceding nomenclature
by personnel to whom the Ingersoll-Rand Mod-
callouts indicate preferred sequence.
el CM150A/D475A pneumatic drills are
d. Report of errors, omissions, and recom-
issued. Chapters 1 through 3 provide informa-
mendations for improving this publication by
tion on operation, preventive maintenance serv-
the individual user is encouraged. Reports
ices, and organizational maintenance of equip-
should be submittedon DA Form 2028 (Rec-
ment, accessories, components, and attach-
ommended Changes to DA Publications) and
ments. Chapters 4 through 6 provide
forwarded direct to the Commanding General,
information for direct and general support and
U. S. Army Mobility Equipment Command,
depot maintenance. Also included are descrip-
ATTN: AMSME-MPP, 4300 Goodfellow
tions of main units and their functions in re-
Blvd., St. Louis Mo. 63120
lationship to other components.
b. Appendix A contains a list of publica-
1-2. Record and Report Forms
tions applicable to this manual. Appendix B
a. DA Form 2258 (Depreservation Guide
contains the list of basic issue items authorized
for Vehicles and Equipment).
the operator of this equipment, and the list
b. For other record and report forms appli-
of maintenance and operating supplies required
cable to operator, crew, and organizational
for initial operation. Appendix C contains the
maintenance, refer to TM 38-750.
maintenance allocation chart. Organizational,
Note. Applicable forms, excluding Standard Form
direct and general support, and depot mainte-
46 (United States Government motor vehicle iden-
nance repair parts and special tools are listed
tification card) which is carried by the operator, shall
in TM 5-3820-239-20P and 35P.
he kept in a canvas bag mounted on the equipment.
Section II. DESCRIPTION AND TABULATED DATA
cfm (cubic feet per minute) of air at 90 psi
a. General. The Ingersoll-Rand Model CM
(pounds per square inch), and a 2-inch bull
hose are required to supply all operating air
1-2) is a self-propelled, compressed air oper-
needed for drilling and tramming (propelling).
ated, crawler-mounted, boom-type drifter drill
that is used for drilling holes in rocklike forma-
b. Tramming. The pneumatic drill traction
tions. The unit is designed to drill both verti-
cal and angular primary blasting holes, within
tank-type tracks which are driven by propel-
the range of boom travel. The drill as fur-
ling air motors through clutches and automatic
nished does not include its own air supply. A
air brakes (all part of the traction drive, fig.