TM 1-1500-204-23-1
a.
Complete Engine Conditioning. Complete
engine conditioning is a complete investigation of the
condition of an engine and correction of any difficulty
detected. Complete engine conditioning will be given
engines being overhauled with the exception of idle
mixture and speed, fuel, oil, and water pressure
adjustments, and final check and adjustment of the
engine after the engine is installed on the aircraft.
Perform
this
conditioning
using
the
Instructions
contained In table 7-2.
b.
Minor Engine Conditioning. Minor engine
conditioning is the investigation and correction of any
malfunction revealed during flight or through the cockpit
checks (daily, intermediate, and complete cockpit
checks). Perform the following procedures for minor
engine conditioning:
(1)
Perform a complete cockpit check (steps
6 through 14, table 7-2) when a new engine Is Installed,
when an aircraft is removed from storage, at each major
and minor Inspection, and when minor conditioning fails
to correct a malfunction. The engine cockpit check will
be handled in the following manner:
(a)
Record all readings on cockpit
check sheet as shown in figure 7-23.
(b)
File form In aircraft flight log folder
for future reference by both maintenance and flight
personnel.
NOTE
The daily check will be carried out by
the air crew and will only be
recorded in the flight log when
performance is unsatisfactory. The
serviceability
of
the
engine
is
established by the air crew by
comparing its readings against those
recorded on the complete cockpit
check made by the maintenance
crew.
(2)
Perform steps 6 through 13, 15, and 17,
table 7-2.
(3)
Perform intermediate check after last
flight of day. The check may be made any time after
the last flight of the day and before the next flight by
either the air crew or maintenance personnel. Any
difficulties encountered during flight are corrected at this
time. The intermediate check is outlined in steps 12
through 15 and 17, table 7-2. The readings obtained are
recorded in the flight log only when engine performance
is unsatisfactory.
7-7. Air Induction System. The air Induction system
supplies air to the carburetor or master control. It forms
a long curved channel which conducts air and fuel-air
mixture to the supercharger section. The channel
consists of an air scoop, temperature controlling device,
and a thermometer General maintenance procedures
are explained in the following paragraphs.
a.
Inspection. Maintenance. Cleaning. and
Replacement. Perform the following procedures for
general
inspection,
maintenance,
cleaning,
and
replacement of air induction system components:
(1)
Check induction system for foreign matter
and articles to prevent such Items from damaging
impeller or clogging air passages.
(2)
Install flexible channel, joining certain
types of Induction systems together, In such a manner
to prevent flexible channel from being sucked down and
restricting air flow.
(3)
Correct leaks In Induction systems soon
as possible after detection, as fuel-air mixture will be
adversely affected.
(4)
Clean air filters at intervals specified in
applicable maintenance manual using the following
procedures:
WARNING
Dry-cleaning solvent is flammable
and solvent vapors are toxic. Use P-
D-680, Type II Solvent in a well-
ventilated area. Keep away from
open flames. Avoid prolonged
solvent contact with skin.
(a)
Immerse
filter
in
dry-cleaning
solvent, Federal Specification P-D-680, and agitate to
remove all imbedded dirt particles.
(b)
Drain by placing on a 25-degree
angle draining rack and allowing to dry thoroughly.
(c)
When completely dry, immerse filter
In a mixture of 1 part corrosion-preventive compound,
MIL-C-5545, and three parts lubricating oil, MIL-L-6082,
Grade 1120, at a temperature of 70 °F (21°C) for 2 to 5
minutes.
7-30
