PM group. When DTO parts are received, they must
be placed in the cube that corresponds to the PM
group of the equipment requiring the parts.
Technical librarians are responsible for the
prepacked library consisting of operational,
maintenance, and parts manuals. They establish and
enforce check-out procedures for manuals and initiate
parts requisitions on NAVSUP Form 1250s. The task
of researching and preparing the 1250s is normally
handled by the technical librarian to free the floor
mechanics to perform maintenance functions.
The CESE Maintenance System of the NCF and
SOU has three categories of maintenance. These
three categories are (1) organizational, (2) inter-
mediate, and (3) depot.
Organizational maintenance is divided into two
classifications: operator maintenance and preventive
Operator maintenance is that which
every operator is required to perform to maintain the
equipment in a clean, safe, and serviceable condition.
It includes the daily inspections, lubrications, and
adjustments necessary to ensure early detection of
The prime objective of
preventive maintenance is to maximize equipment
availability and minimize repair costs. Preventive
maintenance consists of safety and serviceability
inspections, lubrication, minor services, and
adjustments beyond those in operator maintenance.
Operators should participate in this work unless
specifically directed otherwise.
Intermediate maintenance provides a higher
degree of skill than organizational maintenance. The
extent of intermediate maintenance is the removal,
replacement, repair, alteration, calibration, modi-
fication, and the rebuild and overhaul of individual
assemblies, subassemblies, and components. Only
essential repairs are accomplished to ensure safe and
serviceable equipment. Prior approval is required on
equipment requiring extensive repairs or numerous
assemblies that are rebuilt.
Depot maintenance is performed on equipment
requiring major overhaul or comprehensive
restoration that returns CESE to a like-new condition.
Most NCF depot maintenance is performed by the
Construction Equipment Department (CED) at both
Port Hueneme, California, and Gulfport, Mississippi.
The standard interval between PM service
inspections for NCF equipment is 40 working days.
This interval is established by grouping all assigned
equipment into 40 separate PM groups (fig. 1-19).
The equipment is distributed evenly throughout the
PM groups, so only a minimum number of similar
types of equipment are out of service at the same time.
For reserve units, the standard PM interval is 90
calendar days, and the equipment is assigned to one of
six PM groups.
The maintenance supervisor is responsible for
determining when the PM interval for an item of
equipment should be reduced. The time interval can
be reduced by assigning specific items of equipment
to more than one group or by reducing the total
number of groups. The interval between PM service
inspections for active CESE should never extend
beyond the maintenance scheduling standards.
Continuity of the PM schedule is maintained by
transferring the schedule from a relieved unit to the
TYPE A (01) INSPECTION. Type A
inspections are given at intervals of 40 working days,
using the appropriate PM Service and Inspection
Guide set forth in the COMSECOND/COMTHIRD-
NCBINST 11200.1 Series. Type A inspections are
given at 90 calendar days for the reserve NCBs. Type
A inspections are performed on each PM scheduled
date until the vehicle qualifies for a Type B
TYPE B (02) INSPECTION. To prevent a unit
of CESE from being over inspected or over serviced,
you should perform Type B inspections only when the
mileage and hours equal that recommended by the
TYPE C (03) INSPECTION. Type C annual
safety inspection (SI)(ASI) is directed by COM-
SECOND/COMTHIRDNCB representatives. The
maintenance supervisor is required to schedule
50 percent of CESE on site to receive a Type C safety