03-01A- 19
Engine, 3.8L
03-01 A-19
IN-VEHICLE SERVICE (Continued)
b. 8-12 N·m {7 1-106 1b-in).
LOWER INTAKE
MANIFOLD 9424
TIGHTEN IN NUMERICAL SEQUENCE IN
STEPS AS FOLLOWS:
STEP 1
-
5
N·m (44 LB·IN)
STEP 2 - 8-12 N·m (71-106 LB-IN)
A212S1-C
9.
Install front crankcase ventilation tube
so
that the
mounting bracket sits over the lower intake
manifold stud. Tighten nut
on
stud to 20-30 N·m
{ 1 5-22 1b-ft).
10. Install fuel injectors and fuel injection supply
manifold. Tighten fuel injection supply manifold to
lower intake manifold bolts to 8-1 1 N.m {7 1-97
lb-in). T�ghten fuel pressure bracket bolt to 20-30
N·m { 1 5-22 1b-ft).
1 1 . Install upper intake manifold as described.
12.
CAUTION: This engine has aluminum cylinder
heads and requires a special corrosion
inhibiting coolant to avoid cooling system
damage. Refer to Section 03-03 for the
coolant specifications.
Fill engine cooling system as described in Section
03-03.
13. Start engine and check for leaks.
Cylinder Heads
Removal
1 . Drain engine cooling system as described in
Section 03-03.
2. Disconnect battery ground cable { 1 430 1). Refer
to Section 14-Q 1 .
3. Remove air cleaner outlet tube {98659) from
throttle body {9E926). Refer to Section 03- 1 2 .
4. Loosen drive belt tensioner {68209). Remove
drive belt {8620). Refer to Section 03-Q5.
5.
If
LH cylinder head {6049) is being removed,
perform the following:
a. Remove oil filler cap {6766).
b. Remove power steering pump front mounting
bracket retaining bolts.
c. Remove generator {GENX 1 0346) and belt
idler pulley {8678).
d. Remove power steering pump/ generator
bracket retaining bolts.
Leaving hoses connected, place
pump
I
bracket assembly aside in a position
to prevent fluid from leaking out.
6.
If
RH cylinder head is being removed, perform the
following:
a. Remove drive belt.
b.
If
equipped with A
I
C, remove mounting
bracket retaining bolts. Leave hoses
connected and position A
I
C compressor
{ 1 9703) aside. If not equipped with A
I
C,
remove A
I
C belt idler pulley.
c. Remove positive crankcase ventilation valve
{PCV valveX6A666).
7. Remove upper intake manifold {9424).
8.
Remove valve cover {6582).
9. Remove fuel injection supply manifold {9F792).
Refer to Section 03-Q4A.
10. Remove lower intake manifold as described.
1 1 . Remove exhaust manifolds {9430) as described.
1 2. Loosen rocker arm seat retaining bolts enough to
allow rocker arm {6564) to be lifted off the push
rod {6565) and rotate to one side.
1 3. Remove push rods. Identify position of each push
rod. Push rods should be installed in their original
position during assembly.
14. Remove cylinder head retaining bolts and
discard.
1 5. Remove cylinder heads.
1 6. Remove and discard old head gaskets {605 1 ).
17.
If
disassembling cylinder heads, refer to Cylinder
Head, Disassembly.
Installation
1 . NOTE: RH and LH head gaskets are not
interchangeable.
NOTE: Lightly oil all bolts and stud bolt threads
before installation except those specifying
special sealant.
Clean cylinder head, intake manifold, valve cover
and head gasket surfaces.
If
cylinder head was
removed for head gasket replacement, check
flatness of cylinder head and cylinder block
gasket surfaces. Refer to Section 03-QO for
procedure.
2. Position new cylinder heads onto cylinder blocks
{6010) using cylinder head to block dowels
{6A008) for alignment.
1997 Thunderbird, Cougar July 1996