Remove air hoses and fittings from feed
motor (4) (see paragraph 5-3).
Feed motor and gearbox assembly is
Use an overhead hoist to remove
mounting hardware. Failure to follow
this warning could result in personnel
injury and equipment damage.
Remove four bolts(5), lockwashers (6),
and two square washers (7) securing gearbox (8) to
mount (9). Remove feed motor (4) and gearbox.
sprocket (11) and key (12) from gearbox shaft (13).
Install key (12) and sprocket (11) on
gearbox shaft (13). Tighten setscrew (10).
Square washers are used on Inner
mounting bolts only.
Install feed motor (4) and gearbox (8) on
mount (9) using four bolts (5), new lockwashers (6), and
two square washers (7).
Ensure that sprocket (11) is aligned with
other sprockets. Adjust position if necessary.
Install air hoses and fittings on feed motor
(4) (see paragraph 5-3).
Ensure that drive chain (3) properly
engages all sprockets. Install master link (2) and secure
with four new cotter pins (1).
Service gearbox (LO 5-3820-241-12).
Adjust chain (see paragraph 5-13). Page
B-1. Appendix B is superseded as follows:
MAINTENANCE ALLOCATION CHART (MAC)
Section I. INTRODUCTION
The Army Maintenance System MAC
This introduction (Section I) provides a general
explanation of all maintenance and repair functions
authorized at various maintenance levels under the
standard Army Maintenance System concept.
The Maintenance Allocation Chart (MAC) in
Section II designates overall authority and responsibility
for the performance of maintenance functions on the
identified end item or component. The application of the
maintenance functions to the end item or component will
be consistent with the capacities and capabilities of the
designated maintenance levels, which are shown on the
MAC in Column (4) as:
Unit-includes two subcolumns, C (operator/crew)
and O (unit) maintenance.
Direct Support-includes an F subcolumn.
General Support-includes an H subcolumn.
Depot-includes a D subcolumn.
Section III lists the tools and test equipment
(both special tools and common tool sets) required for
each maintenance function as referenced from Section
Section IV contains supplemental instructions
and explanatory notes for a particular maintenance
functions are limited to and defined as
Inspect. To determine the serviceability of an
item by comparing its physical, mechanical, and/or
electrical characteristics with established standards
through examination (e.g., by sight, sound, or feel).