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03-oo-19
Engine-Service
03-oo-19
SERVICE PROCEDURES {Continued)
Refinish cylinders that are deeply scored,
out-of-round, and
I
or taper exceeds specification. If
the cylinder walls have minor surface imperfections,
but the out-of-round and taper are within limits, try to
remove the imperfections by honing the cylinder walls
and installing new service piston rings, providing the
piston clearance is within specification. Refer to
Section 03-01 A (3.8L) or Section 03-Q 1 B (4.6L) under
Specifications.
-
CENTER LINE OF ENGINE -
A
A
1 . OUT -OF-ROUND = DIFFERENCE
BETWEEN A AND B
A
AT RIGHT ANGLE
TO
CENTER LINE OF
ENGINE
B
PARALLEL
TO CENTER LINE
OF ENGINE
2. TAPER = DIFFERENCE BETWEEN THE A
MEASUREMENT AT TOP OF CYLINDER
BORE AND THE A MEASUREMENT AT
BOTTOM OF CYLINDER BORE.
A2905-C
Engine Block Plugs
SPECIAL SERVICE TOOL(S) REQUIRED
Description
Tool Number
Impact Slide Hammer
T59L- 100-B or
T50T- 100-A
Removal and Installation
To remove a large core plug, drill a 12.70 mm (0.5
inch) hole in the center of the plug and remove with an
Impact Slide Hammer T59L -1 OQ-B or T50T-1 OQ-A. On
a small core plug, drill a 6.35 mm (0.25 inch) hole in
the center of the plug and pry it out with a small pin
punch. Clean and inspect the plug bore.
Inspect the plug bore before installation for any
damage that would interfere with the proper sealing of
the plug. If the bore is damaged, true the surface by
boring for the next specified oversize plug.
Oversize plugs are identified by the "OS" stamped in
the flat located on the cup side of the plug.
Coat the plug and
I
or bore lightly with an oil-resistant
(oil galley) sealer such as Stud and Bearing Mount
EOAZ -19554-BA or equivalent meeting Ford
specification WSK-M2G349-A 1, or Thread Lock 262
E2FZ -19554-B or equivalent meeting Ford
specification WSK-M2G351-A6. Install plug following
the procedure for cup-type or expansion-type below:
Cup-Type
Cup-type core plugs are installed with the flanged
edge outward. The maximum diameter is located at
the outer edge of the flange. The flange on cup-type
plugs flares outward with the largest diameter of the
outer (sealing) edge.
CAUTION: It is imperative to push or drive the
plug into the machined bore by using a properly
designed tool. Do not drive the plug into the bore
using a tool that contacts the flange. This will
damage the sealing edge and result in leakage
and/ or plug blowout.
NOTE: If the core plug replacing tool has a depth
seating surface, do not seat the tool against a
non-machined (casting) surface.
When installed, the flanged (trailing) edge must be
below the chamfered edge of the bore to effectively
seal the plugged bore.
CUP TYPE
PLUG
Expansion-Type
SEALING
6
EDGE
BEFORE
INSTALLATION
CUP TYPE CORE
PLUG REPLACER
TOOL
A23318-A
Expansion-type core plugs are installed with the flange
edge inward. The maximum diameter of this plug is
located at the base of the flange with the flange flaring
inward.
1997 Thunderbird, Cougar July 1996