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