TM 5-3820-241-34
CHAPTER 1
INTRODUCTION
Section I. GENERAL
1-1. Scope
This manual contains instructions for direct and
general support maintenance personnel main-
taining the pneumatic rock drill as allocated by
the Maintenance Allocation Chart. It provides
information on the maintenance of the equipment
which is beyond the scope of tools, equipment,
personnel, or supplies normally available to the
operator and organizational levels.
1-2. Maintenance-Forms and Records
Maintenance forms and records you are required
to use are explained in TM 38-750 (The Army
Maintenance Management System (TAMMS)).
1-3. Recommendation
for
Maintenance
Publications Improvements
improvements using DA Form 2028 (Recom-
mended Changes to Publications and Blank
Forms) and mailing the form direct to Com-
mander, US Army Tank-Automotive Command,
A T T N : A M S T A - M S P ( N M P ) , W a r r e n , M I
48090. A reply will be furnished direct to you.
1-4. Equipment Serviceability Criteria
This equipment is not covered by an equipment
serviceability criteria.
1-5. Destruction of Army Material to Prevent
Enemy Use
Refer to TM 5-244-3 (Procedures for Destruction
of Equipment to Prevent Enemy use) for in-
formation and instructions on destruction of
equipment to prevent enemy use.
You can improve this manual by recommending
Section II. DESCRIPTION AND DATA
1-6. Description
A general description of the pneumatic rock drill
and information pertaining to the identification
plates are contained in TM 5-3820-241-12. A more
detailed description of specific components and
assemblies is contained in the applicable sections
of this manual.
1-7. Tabulated Data
tenance data pertinent to direct support and
general support maintenance personnel.
b. Tabulated Data. Refer to TM 5-3820-241-12
for tabulated data applicable to the pneumatic
rock drill.
c. Nut and Bolt Torque Data. Table 1-1 lists
the specific nut and bolt torque data.
a. General. This paragraph contains main-
Table 1-1. Nut and Bolt Torque Data
Item
Size
Transmission cover
1/2-13
Transmission to frame
1/2-13
Transmission to brake housing and air motor
1/2-13
Brake cylinder to brake housing
3/8-16
Brake cover
3/8-16
Clutch housing to transmission
3/8-16
Drive sprocket to transmission (wheel nuts)
5/8-18
Pillow block to side frame
5/8-11
Pillow block to side frame
3/4-10
Equalizer bar to equalizer arm
5/8-11
Equalizer arm to side frame
1-8
Idler shaft nut
7/8-14
Holler shaft to side frame (U-bolt)
l/2-13
Tilt and swing gibs
5/8-11
Trunnion to saddle
1-1/4-12
Tilt cylinder to pivot cap
7/8-9
Front sprocket bushing
1/2-13
Torque Ft-lb
45-50
45-50
45-50
28-83
18-21
18-21
300-320
75-85
125-135
125-135
140-150
105-115
68-73
75-85
300-400
105-115
45-50
1-1