in the performance of second-echelon pe-
b. To lubricate the equipment in accord-
riodic services.
ance with paragraph 53.
c. Services. Second-echelon services
are defined by, and restricted to, the fol-
56. Recording Repairs
lowing general procedures unless approval
Repairs accomplished will be in accord-
has been given by the supporting ordnance
ance with the procedures and standards
organization.
prescribed in appropriate technical manu-
(1) Adjust. Make all necessary adjust-
als. The equipment record system pro-
ments in accordance with instruc-
vides for recording repairs required and
t i o n s contained in the pertinent
accomplished on specific items of equip-
section of this technical manual or
ment. This will include, but is not limited
technical bulletin.
to, adjusting, c1eaning, replacing, and
(2) Clean. Clean the unit as outlined
straightening. Deficiencies and shortcom-
in paragraph 43 to remove old lu-
ings not corrected by operators or crew,
bricant, dirt, and other foreign ma-
or those discovered during periodic in-
terial.
spections, will be corrected, insofar as
(3) Tighten. All tightening operations
possible, by second-echelon maintenance
should be performed with sufficient
personnel. These repairs will be indicated
wrench torque to tighten the unit
on DA Form 2404 and recorded on the or-
according to good mechanical
ganizational maintenance record of the
practice. Do not over-tighten, as
equipment log.
t h i s may strip threads or cause
distortion. Tightening will always
57. General Procedures
be understood to include the cor-
r e c t installation of lockwasher,
a. Automatically App1ied. All of the
locknuts, locking wire, or cotter
general procedures given in the operator's
manual will be followed. Organizational
pins, to secure the tightened nut.
mechanics must be so thoroughly trained
in these procedures that they apply them
58. Specific Procedures for Second Echelon
automatically at all times in the perform-
ance of their duties.
to be performed on the vehicle by second-
b. First-echelon Participation. The op-
echelon personnel for each monthly "M"
erator usually accompanies the equipment
service.
and assists the organizational mechanics
Table 3. Preventive-Maintenance Checks and Services
Monthly Schedule
2nd Echclon
Reference
Sequence
Item to be
Procedure
paragraph
number
inspected
1
Work lamp ----
Check for damaged or frayed wire. Replace unserviceable
incandescent lamp.
Electrical clips
Straighten bent electrical clips or replace as necessary -----
2
3
Electrical cable
Replace cracked or damaged electrical cable nipples --------
nipples.
Par. 24 and
Start the tester, clip the vacuum hose and check to see if
4
Vacuum pump --
32.
vacuum will reach its maximum on vacuum gage.
See par. 54
5
Tester case and
Check for dents and exposed surfaces. Straighten dents,
for painting
control panel.
tighten loose screws, and paint exposed surfaces.
instructions.
Section IV. TROUBLESHOOTING
59. Purpose
components by indications, symptoms, and
tests. Close adherence to the procedures
Troubleshooting is a systematic deter-
covered herein will materially reduce the
mination of malfunctions and defective
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