approval has been given by the support-
III. Preventive-Maintenance
ing field organization.
Checks and Services
Monthly Schedule
2nd Echelon
(1) Adjust. Make all necessary ad-
justments in accordance with in-
Item to b e
Paragraph
Sequence
Procedure
reference
inspected
number
structions contained in the per-
tinent section of this technical
Work lamp.
Check for dam-
manual or technical bulletin.
aged or frayed
wire. Replace
(2) Clean. Clean the unit as outlined
unserviceable
incandescent
lubricant, dirt, and other foreign
lamp.
Straighten bent
Electrical
material.
clips.
electrical clips
(3) Tighten. All tightening opera-
or replace.
Electrical
Replace cracked
tions should be performed with
or damaged
cable
nipples.
electrical cable
tighten the unit according to good
nipples.
Start tester vacu-
Vacuum
4
mechanical practice. Do not
pump.
um pump, plug
over-tighten, as this may strip
vacuum hose
threads or cause distortion.
and check to
see if vacuum
Tightening will always be under-
reaches its
stood to include the correct in-
maximum on
vacuum gage.
Adjust vacuum
nuts, locking wire, or cotter pins,
pump as re-
to secure the tightened nut.
quired.
5
Tester case
Check for dents
and con-
and exposed
for paint-
59. Specific Procedures for Second Echelon
trol panel.
surfaces.
ing in-
Straighten dents,
structions.
tighten loose
to be performed on the vehicle by sec-
screws, and
paint exposed
ond-echelon personnel for each monthly
surfaces.
"M" service.
S e c t i o n IV. TROUBLESHOOTING
For troubleshooting procedures by the
Troubleshooting is a systematic de-
termination of malfunctions and defective
components by indications, symptoms,
and tests. Close adherence to the proce-
Malfunctions which may occur with the
dures covered herein will materially re-
duce the time required to locate trouble
and restore the materiel to normal op-
II. Causes are listed opposite each mal-
eration.
function and are arranged according to
Caution: Operation of materiel without
the ease of correction.
a preliminary examination can c a us e
Troubleshooting
further damage to a disabled component.
Be careful during inspection and trouble-
Corrective
action
shooting, so that damage can be avoided.
tester
a.
Remove
from case
61. Scope
fails to
see that wires
start.
This section covers troubleshooting
are secure
which is peculiar to organizational (sec-
on power
ond echelon) maintenance operations.
switch.