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03-oo-30
Engine-Service
03-oo-30
SERVICE PROCEDURES (Continued)
Pressure Regulator Valve Inspection
NOTE: Internal components are not serviced.
If
any
component is out of specification, replace oil pump
(6600).
Check the relief valve piston for free operation in the
bore. Inspect the relief valve spring to see if it is
collapsed or worn. Check the relief valve spring
tension. If the spring tension is not within specification
and
I
or the spring is worn or damaged, replace the oil
pump on 4.6L engine-equipped vehicles, or the oil
pump and filter body (6603) on 3.8L engine-equipped
vehicles.
Oil Pan
Cleaning
CAUTION: Do not damage the low oil level sensor
(if equipped) when cleaning the oil pan (6675).
Scrape any dirt or metal particles from the inside of
the oil pan. Scrape all old gasket material from the
gasket surface. Wash the oil pan in a solvent and dry it
thoroughly. Make sure all foreign particles are
removed.
Inspection
Check the oil pan for cracks, holes or damaged drain
plug threads. Check the gasket surface for damage
caused by over-tightened bolts. Replace with a new oil
pan if service cannot be made.
Cylinder Heads
Replace the cylinder head (6049) if it is cracked. Do
not plane or grind more than 0.254 mm (0.010 inch)
from original cylinder head gasket surface. Remove all
burrs or scratches with an oil stone.
Cleaning
CAUTION: With the valves installed to protect the
valve seats, remove deposits from the
combustion chambers and valve heads with a
scraper and a wire brush. Be careful not to
damage the cylinder head gasket surface or
possible leakage may occur upon reassembly.
After the valves are removed, clean the valve guide
bores. Use cleaning solvent to remove dirt, grease and
other deposits from the valves with a fine wire brush or
buffing wheel.
Inspection
Inspect the cylinder heads for cracks or excessively
burned areas in the exhaust outlet ports.
Check the cylinder head for cracks and inspect the
gasket surface for burrs and nicks. Small
imperfections can be dressed down using an oil stone.
Replace the cylinder head if it is cracked.
The following inspection procedures are for a cylinder
head that is to be completely overhauled. For
individual service operations, use only the pertinent
inspection procedure.
Spark Plug
Thread Service
Damaged spark plug threads in the cylinder head can
be serviced using Rotunda Sav-A-Thread Spark Plug
Kit 107 -R092 1 or equivalent.
The procedure involves cutting new threads in the
spark plug hole. After rethreading operation, tapered
sleeve will be installed in the cylinder head. The sleeve
is threaded on the inside and outside. The outside
threads into the cylinder head while the inside
provides new threads for the spark plug ( 1 2405).
This service is permanent and will have no effect on
cylinder head or spark plug life.
CAUTION: The cylinder head must be removed
from engine before installing a tapersert. The
service procedure includes a thread cutting
process which produces metal chips. Performing
this procedure while the cylinder head is on the
cylinder blocks (601 0) will cause metal chips to
fall into the cylinder. Once in the cylinder, these
chips can damage the cylinder wall when the
engine is started.
NOTE: The use of power or air-driven tools is not
approved for the installation of taperserts.
TAP
MANDREL
ROTUNDA SAY-A-THREAD SPARK PLUG KIT
107-R0921
AA1009-A
1 . Thoroughly clean spark plug counterbore, seat
and threads of all dirt or other foreign material.
2.
Start tap into spark plug hole, being careful to
keep it properly aligned. As tap begins cutting
new threads, apply aluminum cutting oil to tap.
Continue cutting threads and applying oil until
stop ring bottoms against spark plug seat.
3.
Remove tap. Remove all metal chips using
compressed air.
1997 Thunderbird, Cougar July 1996
Содержание Thunderbird
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