Cessna T188C - Page 224

MODEL
188 & T188
SERIES SERVICE
MANUAL
11B-11.
STATIC
RUN-UP
PROCEDURES.
Ina case
11B-19.
ENGINE
BAFFLES.
(Refer
to Section
11).
of suspected low engine power, a static run-up should
be conducted
as follows:
11B-20. ENGINE
MOUNT.
(Refer to Section
11A).
a. Run-up
engine, using
takeoff power
and mixture
settings,
with the aircraft facing 90 right
and then 11B-21. PAINTING
ENGINE MOUNT.
(Refer to
left to the wind direction. Section 19).
b. Record the RPM obtained in each run-up position.
11B-22. ENGINE
OIL SYSTEM.
(Refer
to Section
NOTE
11).
Daily changes in atmospheric pressure, 11B-23. ENGINE FUEL SYSTEM.
temperature
and
humidity
will have
a
slight effect on static run-up.
11B-24.
DESCRIPTION. The
fuel injection system
is a low pressure system of injecting fuel into the
c. Average the results of the RPM obtained. It intake valve port of each cylinder. It is a multi-
should
be within 50 RPM of 2700
RPM, 2700 RPM nozzle,
continuous-flow type which
controls fuel
must
not be exceeded at any time.
flow to
match engine airflow. Any change
in throttle
d. If the
average results of the RPM obtained
are position, engine
speed, or a combination
of both,
lower than
stated above, the
following recommended
causes changes
in fuel flow in
the correct relation
to
checks may
be performed
to determine
a possible
engine airflow.
A manual
mixture control
and a fuel
deficiency. flow indicator are provided. The fuel flow indicator
is calibrated in gallons per hour and indicates approxi-
1.
Check governor
control for
proper rigging.
mately
the gallons of
fuel consumed
per hour. The
It should be determined that
the governor control continuous-flow
system uses a typical
rotary vane fuel
arm travels to the high RPM stop on the governor pump. There are no running parts in this system ex-
and that the high RPM stop screw is adjusted proper- cept for the engine-driven fuel pump. The four major
ly.
(Refer to Section 13 for procedures).
components
of the system are: the
fuel injection
pump, fuel-air
control
unit, fuel manifold
valve and
NOTE
the fuel
discharge
nozzles.
The
fuel
injection
pump
incorporates an adjustable aneroid sensing unit which
If verification
of governor
operation is
is
pressurized
from the discharge
side of the
turbo-
necessary the governor
may be removed
charger compressor.
Turbocharger discharge
air
from
the engine and
a flat plate installed
pressure
is also used to
vent the fuel discharge
noz-
over the
engine
pad. Run-up
engine
to
zles and
the vent
port of
the fuel-flow
gage.
determine that governor was adjusted
correctly.
11B-25.
FUEL-AIR
CONTROL
UNIT.
(Refer
to
Section 11A.
2. Check
magneto timing,
spark
plugs and igni-
tion harness for settings and condition. 11-26. REMOVAL AND INSTALLATION. (Refer
3. Check fuel injection nozzles for restriction to Section 11A.
and check for correct unmetered fuel flow.
4. Check condition
of induction
air filter.
Clean 11B-27.
ADJUSTMENTS,
CLEANING
AND INSPEC-
if required.
TION. (Refer
to Section
11A.)
5. Perform an engine compression check (Refer
to
engine manufacturer's
manual).
11B-28. THROTTLE
RIGGING.
(Refer to
Section 11A.)
11B-12.
REMOVAL AND
INSTALLATION.
(Refer to
Section
11A).
11B-29.
RIGGING THROTTLE
OPERATED
MICRO-
SWITCH. (Refer to Section 12.)
11B-13. INSPECTION.
(Refer to
Section 11A).
SWITCH (Refer
to Section 12.
11B-30.
FUEL
MANIFOLD
VALVE. (Refer
to
11B-14.
CLEANING.
(Refer
to Section
11).
Section
11A.)
l1B-15.
ACCESSORIES
REMOVAL.
(Refer
to
11B-15.
ACCESSORIES
REMOVAL.
(Refer
to
11B-31.
REMOVAL,
CLEANING,
AND
INSTALLA-
Section
11)
TION.
(Refer
to
Section
11A.)
11B-16. INSPECTION.
(Refer to Section
11).
11B-32. FUEL DISCHARGE NOZZLES. (Refer to
11B-17. BUILD UP. (Refer to Section 11). Section 11A.)
11B-18.
FLEXIBLE
FLUID HOSES.
(Refer to
11B-33.
CLEANING, INSPECTION,
AND
INSTALLA-
Section
2).
TION.
(Refer
to Section
11A.)
1IB-10