TM-5-5420-202-20-4
M60A1 CHASSIS, TRANSPORTING; FOR BRIDGE, ARMORED-VEHICLE-LAUNCHED; SCISSORING TYPE, CLASS 60
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL; VOLUME 4 OF 4
OCTOBER 1985
TM-5-5420-202-20-4 - Page 321 of 534
TM 5-5420-202-20-4
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
B-1 General
a.
This section provides a general
explanation of all maintenance and repair
functions
authorized
at
various
maintenance levels.
b.
The
Maintenance
Allocation
Chart (MAC) in Section II designates
overall responsibility y for the perform ante
of maintenance functions on the identified
end
item
or
component.
The
implementation of
the
maintenance
functions upon the end item or component
will be consistent
with the assigned
maintenance functions.
c. Section III lists the special tools
and test equipment required for each
maintenance function as referenced from
section II.
d.
Section IV contains supplemental
instructions and explanatory notes for a
particular maintenance function.
B-2 Maintenance Functions
a.
Inspect.
To determine the
serviceability of an item by comparing its
physical,
mechanical
and/or
electrical
characteristics with established standards
through examination.
b.
Test. To verify serviceability and
detect incipient failure by measuring the
mechanical or electrical characteristics of
an
item
and
comparing
these
characteristics with prescribed standards.
c.
Service.
Operations required
periodically to keep an item in proper
operating
condition,
i.e.,
to
clean
(decontaminate), to preserve, to drain, to
paint, or to replenish fuel, lubricants,
hydraulic
fluids, or
compressed
air
supplies.
d.
Adjust.
To maintain, within pre-
scribed limits, by bringing into proper or
exact position, or by setting the operating
characteristics to specified parameters.
e.
Align. To adjust specified variable
elements of an item to bring about optimum
or desired performance.
f.
Calibrate. To determine and cause
corrections to be made or to be adjusted on
instruments or test measuring and diagn-
ostic equipment used in precision measure-
ment.
Consists of comparisons of two in-
struments, one of which is a certified stan-
dard of known accuracy, to detect and
adjust any discrepancy in the accuracy of
the instrument being compared.
g.
Install.
The act of emplacing,
seating, or fixing into position an item, part,
or module (component or assembly) in a
manner to allow the proper functioning of
an equipment or system.
h.
Replace. The act of substituting a
serviceable like part, subassembly, or
module (component or assembly) for an un-
serviceable counterpart.
i.
Repair.
The application of main-
tenance services
1
, including fault location/-
troubleshooting
2
,
removal/installation, and
disassembly/assembly
3
procedures,
and
maintenance actions
4
to identify troubles
1
Services - inspect, test, service, adjust, aline, calibrate, and/or replace.
2
Fault locate/troubleshoot - The process of investigating and detecting the cause of
equipment malfunctioning; the act of isolating a fault within a system or unit under test
(UUT).
3
Disassemble/assemble - encompasses the step-by-step taking apart (or breakdown) of
a spare/functional group coded item to the level of its least componency identified as
maintenance significant (i.e., assigned and SMR code) for the category of maintenance under
consideration.
4
Actions -
welding, grinding, riveting, straightening, facing, remachinery, and/or
resurfacing.
B-1
Back to Top
