TM 5-6115-590-12
4-63. Oil Temperature Regulator Assembly
a.
Removal (fig. 4-40).
(1)
Remove oil hose assemblies from oil
temperature regulator valve. Drain hoses of residual oil
and discard packing.
(2)
Loosen attaching clamps and remove
hose
assemblies
from
oil
temperature
regulator.
Remove regulator from its cradle.
b.
Installation.
(1)
Install replacement regulator assembly on
cradle. Replace hose assemblies on each end of
regulator and secure with attaching clamps.
(2)
Reconnect
oil
hose
assemblies
to
regulator valve using new packing.
4-64. Regulator Valve
a.
Removal (fig. 4-40).
(1)
Remove
oil
hose
assemblies
from
regulator valve and drain hoses of residual oil.
(2)
Remove
attaching
bolts,
nuts
and
washers and remove regulator valve and two packings
from the oil temperature regulator. Discard the
packings.
b.
Installation.
(1)
Install new packings in place in oil
temperature regulator. Install replacement regulator
valve in place and secure with attaching bolts, nuts and
washers. Tighten bolts securely.
(2)
Reconnect hose assemblies to regulator
valve using new packing.
4-65. Gas Turbine Engine
a.
General. Maintenance of the gas turbine engine
at organizational maintenance level consists primarily of
inspection,
servicing,
testing
and
removal
and
replacement of peripheral accessories, attached to, but
external to the gas turbine engine assembly.
4-66. Plenum, Turbine Exhaust
Inspect turbine exhaust plenum for signs of
corrosion, cracks, dents, loose mounting bolts and
evidence of leakage or other obvious damage.
4-67. Igniter Plug
a.
Removal.
WARNING
Do not remove igniter plug or ignition unit
unless they have been grounded. The
high-tension lead must be grounded as it
is removed from the igniter plug. Ground
by touching the contact spring in the lead
to the igniter.
(1)
Remove ignition lead (fig. 4-41) from
igniter plug and ground it.
(2)
Remove two attaching bolts and washers
and remove igniter plug and gasket from engine
combustion chamber.
b.
Cleaning and Inspection.
(1)
Clean igniter plug electrode by brushing
with a stiff bristle brush. Wipe exterior of plug with a
clean rag moistened with an approved cleaning solvent.
(2)
Visually inspect plug for cracks, damaged
threads, excessive burning, or other evidence of
damage. Check electrode for adequate protrusion in
accordance with figure 4-42.
c.
Test. Connect a satisfactory ignition lead and a
satisfactory ignition unit to the igniter plug. Connect a
28V DC power source. Plug must spark consistently at
a rate of 10 sparks per second maximum.
d.
Installation.
(1)
Install satisfactory or replacement igniter
plug in combustion chamber using new gasket.
(2)
Coat threads of attaching bolts with a film
of compound (Fel-Pro C-5). Secure plug with washers
and coated bolts. Tighten bolts to 50 to 70 inch-pound
torque.
(3)
Reconnect ignition lead assembly to
igniter plug.
4-68. Ignition Lead Assembly
WARNING
Do not remove igniter plug or ignition unit
unless they have been grounded. The
high-tension lead must be grounded as
soon as it is removed from the igniter
plug. Ground by touching the contact
spring in the lead to the igniter.
a.
Removal
(1)
Disconnect
ignition
lead
assembly
(fig.4-41) from igniter plug and ground it. Then
disconnect lead from ignition unit.
(2)
Remove clamp holding ignition lead
assembly to engine assembly and remove ignition lead.
b.
Cleaning and Inspection.
(1)
Clean ignition lead assembly with filtered
compressed air or wipe with a clean rag moistened with
an approved cleaning solvent.
(2)
Visually inspect lead assembly for burned,
bent, loose, corroded or otherwise damaged connectors.
Inspect
insulation
for
burns,
chafing,
breaks,
deterioration, or other obvious damage.
c.
Test. Check with an ohmmeter for open lead or
short circuit to insulation.
d.
Installation.
Reconnect
a
satisfactory
or
replacement ignition lead assembly to ignition unit and
igniter plug.
4-95
